(201 days)
The MAGNETOM system is indicated for use as a magnetic resonance diagnostic device (MRDD) that produces transverse, sagittal, coronal and oblique cross sectional images, spectroscopic images and/or spectra, and that displays the internal structure and/or function of the head, body, or extremities. Other physical parameters derived from the images and/or spectra may also be produced. Depending on the region of interest, contrast agents may be used. These images and/or spectra and the physical parameters derived from the images and/or spectra when interpreted by a trained physician yield information that may assist in diagnosis.
The MAGNETOM system may also be used for imaging during interventional procedures when performed with MR compatible devices such as in-room displays and MR Safe biopsy needles.
The subject device, MAGNETOM Cima.X with software syngo MR XA61A, consists of new and modified software and hardware that is similar to what is currently offered on the predicate device, MAGNETOM Vida with syngo MR XA50A (K213693).
A high-level summary of the new and modified hardware and software is provided below:
For MAGNETOM Cima.X with syngo MR XA61:
Hardware
New Hardware:
→ 3D Camera
Modified Hardware:
- → Host computers ((syngo MR Acquisition Workplace (MRAWP) and syngo MR Workplace (MRWP)).
- → MaRS (Measurement and Reconstruction System).
- → Gradient Coil
- → Cover
- → Cooling/ACSC
- → SEP
- → GPA
- → RFCEL Temp
- → Body Coil
- → Tunnel light
Software
New Features and Applications:
- -> GRE_PC
- → Physio logging
- -> Deep Resolve Boost HASTE
- → Deep Resolve Boost EPI Diffusion
- → Open Recon
- -> Ghost reduction (DPG)
- -> Fleet Ref Scan
- → Manual Mode
- → SAMER
Modified Features and Applications:
- → BEAT_nav (re-naming only).
- → myExam Angio Advanced Assist (Test Bolus).
- → Beat Sensor (all sequences).
- → Stimulation monitoring
- -> Complex Averaging
Additionally, the pulse sequence MR Fingerprinting (MRF) (K213805) is now available for the subject device MAGNETOM Cima.X with syngo MR XA61A.
The provided text is a 510(k) Summary for a medical device (MAGNETOM Cima.X) and outlines how the device, particularly its AI features, meets acceptance criteria through studies.
1. Table of Acceptance Criteria and Reported Device Performance
The acceptance criteria are implied by the performance characteristics used to evaluate the AI features. The reported device performance is presented in terms of quality metrics and visual evaluations.
| Acceptance Criterion (Implied) | Reported Device Performance |
|---|---|
| Deep Resolve Boost (TSE, HASTE, EPI Diffusion) | |
| Image quality (e.g., aliasing artifacts, sharpness, denoising levels) | Characterized by: - Peak Signal-to-Noise Ratio (PSNR) - Structural Similarity Index (SSIM) - Evaluated by visual comparisons to assess aliasing artifacts, image sharpness, and denoising levels. |
| Deep Resolve Sharp | |
| Image quality (e.g., sharpness) | Characterized by: - Peak Signal-to-Noise Ratio (PSNR) - Structural Similarity Index (SSIM) - Perceptual loss - Verified and validated by in-house tests, including visual rating and evaluation of image sharpness by intensity profile comparisons of reconstructions with and without Deep Resolve Sharp. |
2. Sample Sizes Used for the Test Set and Data Provenance
The document does not explicitly delineate a separate "test set" with a dedicated sample size after the training and validation phase for Deep Resolve Boost and Deep Resolve Sharp. Instead, it seems the "validation" mentioned in the context of training and validation data encompasses the evaluation of device performance.
-
Deep Resolve Boost:
- TSE: More than 25,000 slices (used for training and validation).
- HASTE: Pre-trained on TSE dataset and refined with more than 10,000 HASTE slices (used for training and validation).
- EPI Diffusion: More than 1,000,000 slices (used for training and validation).
- Data Provenance: Retrospectively created from acquired datasets. The document does not specify the country of origin.
-
Deep Resolve Sharp:
- Sample Size: More than 10,000 high-resolution 2D images (used for training and validation).
- Data Provenance: Retrospectively created from acquired datasets. The document does not specify the country of origin.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Their Qualifications
The document does not mention the use of experts to establish ground truth for the test set of the AI features. The "visual comparisons" and "visual rating" described are internal evaluations for feature performance but are not linked to expert-established ground truth for a formal test set described as such.
4. Adjudication Method for the Test Set
Not applicable, as no external expert-adjudicated test set is explicitly described for the AI features. The evaluations mentioned (visual comparisons, visual rating) appear to be internal.
5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done
No MRMC comparative effectiveness study is mentioned in the provided text for the AI features. The document focuses on the technical performance of the AI algorithms rather than their impact on human reader performance.
6. If a Standalone (i.e. algorithm only without human-in-the-loop performance) Was Done
Yes, the performance evaluation for Deep Resolve Boost and Deep Resolve Sharp appears to be standalone algorithm performance. The metrics (PSNR, SSIM, perceptual loss) and visual comparisons/ratings are related to the image quality produced by the algorithm itself, without direct assessment of human-in-the-loop performance.
7. The Type of Ground Truth Used
- Deep Resolve Boost: The acquired datasets (MRI raw data or images) were considered the "ground truth" for training and validation. Input data for the AI was then retrospectively created from this ground truth by data manipulation and augmentation (discarding k-space lines, lowering SNR, mirroring k-space data) to simulate different acquisition conditions.
- Deep Resolve Sharp: The acquired datasets (high-resolution 2D images) were considered the "ground truth" for training and validation. Low-resolution input data for the AI was retrospectively created from this ground truth by cropping k-space data, so the high-resolution data served as the output/ground truth.
8. The Sample Size for the Training Set
The document combines training and validation data, so the sample sizes listed in point 2 apply:
- Deep Resolve Boost:
- TSE: More than 25,000 slices
- HASTE: More than 10,000 HASTE slices (refined)
- EPI Diffusion: More than 1,000,000 slices
- Deep Resolve Sharp: More than 10,000 high-resolution 2D images
9. How the Ground Truth for the Training Set Was Established
- Deep Resolve Boost: "The acquired datasets (as described above) represent the ground truth for the training and validation." This implies that the raw, original MRI data or images acquired under standard, full-sampling conditions were considered the reference. The AI was then trained to recover information from artificially degraded or undersampled versions of this ground truth.
- Deep Resolve Sharp: "The acquired datasets represent the ground truth for the training and validation." Similar to Deep Resolve Boost, the original high-resolution acquired 2D images were used as the ground truth. Low-resolution data was then derived from these high-resolution images to create the input for the AI, with the original high-resolution images serving as the target output (ground truth).
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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health and Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
December 18, 2023
Siemens Medical Solutions USA, Inc. Alina Goodman Regulatory Affairs Professional 40 Liberty Boulevard Malvern, Pennsylvania 19355
Re: K231587
Trade/Device Name: MAGNETOM Cima.X Regulation Number: 21 CFR 892.1000 Regulation Name: Magnetic Resonance Diagnostic Device Regulatory Class: Class II Product Code: LNH, LNI, MOS Dated: November 17, 2023 Received: November 17, 2023
Dear Alina Goodman:
We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
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Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
D.R.
Daniel M. Krainak, Ph.D. Assistant Director DHT8C: Division of Radiological Imaging and Radiation Therapy Devices OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
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Indications for Use
Submission Number (if known)
K231587
Device Name
MAGNETOM Cima.X
Indications for Use (Describe)
The MAGNETOM system is indicated for use as a magnetic resonance diagnostic device (MRDD) that produces transverse, sagittal, coronal and oblique cross sectional images, spectroscopic images and/or spectra, and that displays the internal structure and/or function of the head, body, or extremities. Other physical parameters derived from the images and/or spectra may also be produced. Depending on the region of interest, contrast agents may be used. These images and/or spectra and the physical parameters derived from the images and/or spectra when interpreted by a trained physician vield information that may assist in diagnosis.
The MAGNETOM system may also be used for imaging during interventional procedures when performed with MR compatible devices such as in-room displays and MR Safe biopsy needles.
Type of Use (Select one or both, as applicable)
Prescription Use (Part 21 CFR 801 Subpart D)
e-Counter Use (21 CFR 801 Subpart C)
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510(k) Summary
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of the Safe Medical Devices Act 1990 and 21 CFR § 807.92.
-
- General Information
| Establishment: | Siemens Medical Solutions USA, Inc.40 Liberty BoulevardMalvern, PA 19355, USARegistration Number: 2240869 |
|---|---|
| Date Prepared: | May 25th, 2023 |
| Manufacturer: | Siemens Healthcare GmbHHenkestr. 12791052 ErlangenGermanyRegistration Number: 3002808157 |
| Siemens Shenzhen Magnetic Resonance LTDSiemens MRI CenterHi-Tech Industrial Park (middle)Gaoxin C. Ave., 2ndShenzhen 518057P.R. CHINARegistration Number: 3004754211 | |
| 2. Contact Information | |
| Alina GoodmanRegulatory Affairs Professional |
Siemens Medical Solutions USA, Inc. 40 Liberty Boulevard Malvern, PA 19355, USA Phone: +1(317)371-8593 E-mail: alina.goodman@siemens-healthineers.com
3. Device Name and Classification
| Device/ Trade name: | MAGNETOM Cima.X |
|---|---|
| Classification Name: | Magnetic Resonance Diagnostic Device (MRDD) |
| Classification Panel: | Radiology |
| CFR Code: | 21 CFR § 892.1000 |
| Classification: | II |
| Product Code: | Primary: LNHSecondary: LNL. MOS |
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4. Legally Marketed Predicate and Reference Device
- 4.1. Predicate Device
| Trade name: | MAGNETOM Vida |
|---|---|
| 510(k) Number: | K213693 |
| Classification Name: | Magnetic Resonance Diagnostic Device (MRDD) |
| Classification Panel: | Radiology |
| CFR Code: | 21 CFR § 892.1000 |
| Classification: | II |
| Product Code: | Primary: LNH |
| Secondary: LNI, MOS |
| 4.2. Reference Device | |
|---|---|
| Trade name: | MAGNETOM Prisma |
| 510(k) Number: | K202014 |
| Classification Name: | Magnetic Resonance Diagnostic Device (MRDD |
| Classification Panel: | Radiology |
| CFR Code: | 21 CFR § 892.1000 |
| Classification: | II |
| Product Code: | Primary: LNHSecondary: LNI, MOS |
| Trade name: | MAGNETOM Sola |
| 510(k) Number: | K221733 |
| Classification Name: | Magnetic Resonance Diagnostic Device (MRDD |
| Classification Panel: | Radiology |
| CFR Code: | 21 CFR § 892.1000 |
| Classification: | II |
| Product Code: | Primary: LNHSecondary: LNI, MOS |
| Trade name: | MAGNETOM Free.Max |
| 510(k) Number: | K220575 |
| Classification Name: | Magnetic Resonance Diagnostic Device (MRDD |
| Classification Panel: | Radiology |
| CFR Code: | 21 CFR § 892.1000 |
| Classification: | II |
| Product Code: | Primary: LNHSecondary: LNI, MOS |
4. Intended Use
The indications for use for the subject device are the same as the predicate device:
The MAGNETOM system is indicated for use as a magnetic resonance diagnostic device (MRDD) that produces transverse, sagittal, coronal and oblique cross sectional images, spectroscopic images and/or spectra, and that displays the internal structure and/or function of the head, body, or extremities. Other physical parameters derived from the
{5}------------------------------------------------
images and/or spectra may also be produced. Depending on the region of interest, contrast agents may be used. These images and/or spectra and the physical parameters derived from the images and/or spectra when interpreted by a trained physician yield information that may assist in diagnosis.
The MAGNETOM system may also be used for imaging during interventional procedures when performed with MR compatible devices such as in-room displays and MR Safe biopsy needles.
5. Device Description
The subject device, MAGNETOM Cima.X with software syngo MR XA61A, consists of new and modified software and hardware that is similar to what is currently offered on the predicate device, MAGNETOM Vida with syngo MR XA50A (K213693).
A high-level summary of the new and modified hardware and software is provided below:
For MAGNETOM Cima.X with syngo MR XA61:
Hardware
New Hardware:
→ 3D Camera
Modified Hardware:
- → Host computers ((syngo MR Acquisition Workplace (MRAWP) and syngo MR Workplace (MRWP)).
- → MaRS (Measurement and Reconstruction System).
- → Gradient Coil
- → Cover
- → Cooling/ACSC
- → SEP
- → GPA
- → RFCEL Temp
- → Body Coil
- → Tunnel light
Software
New Features and Applications:
- -> GRE_PC
- → Physio logging
- -> Deep Resolve Boost HASTE
- → Deep Resolve Boost EPI Diffusion
- → Open Recon
- -> Ghost reduction (DPG)
- -> Fleet Ref Scan
- → Manual Mode
- → SAMER
Modified Features and Applications:
- → BEAT_nav (re-naming only).
- → myExam Angio Advanced Assist (Test Bolus).
- → Beat Sensor (all sequences).
- → Stimulation monitoring
- -> Complex Averaging
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Additionally, the pulse sequence MR Fingerprinting (MRF) (K213805) is now available for the subject device MAGNETOM Cima.X with syngo MR XA61A.
6. Substantial Equivalence
MAGNETOM Cima.X with software syngo MR XA60A is substantially equivalent to the following predicate device:
| Predicate Device | FDA Clearance Number andDate | ProductCode | Manufacturer |
|---|---|---|---|
| MAGNETOM Vida with syngoMR XA50A | K213693, cleared on February25, 2022 | LNHLNI, MOS | Siemens Healthcare GmbH |
| Reference Device | FDA Clearance Number andDate | ProductCode | Manufacturer |
| MAGNETOM Prisma withsyngo MR XA30A | K202014 cleared,September 08, 2020 | LNH,LNI, MOS | Siemens Healthcare GmbH |
| MAGNETOM Sola with syngoMR XA51A | K221733 cleared, September13, 2022 | LNH,LNI, MOS | Siemens Healthcare GmbH |
| MAGNETOM Free.Max withsyngo MR XA50A | K220575 cleared, June 22,2022 | LNH,LNI, MOS | Siemens ShenzhenMagnetic Resonance Ltd. |
7. Technological Characteristics
The subject device, MAGNETOM Cima.X with software syngo MR XA61A, is substantially equivalent to the predicate device with regard to the operational environment, programming language, operating system and performance.
The subject device conforms to the standard for medical device software (IEC 62304) and other relevant IEC and NEMA standards.
There are some differences in technological characteristics between the subject device and predicate device, including new and modified hardware/software. Here is summary of differences:
| Subject Devices | Predicate Device | Reference Devices | |
|---|---|---|---|
| Hardware | MAGNETOM Cima.Xwith software syngo MRXA61A | MAGNETOM Vida withsyngo MR XA50A(K213693) | MAGNETOM Sola withsyngo MR XA51A(K221733)MAGNETOM Prisma withsyngo MR XA30A(K202014)MAGNETOM Free.Maxwith syngo MR XA50A(K220575) |
| Magnet System | Yes | Yes | Yes |
| RF System | Yes | Yes | Yes |
| Transmissiontechnique | Yes | Yes | Yes |
| Gradient System | New or modified features aslisted in the DeviceDescription above | Yes | Yes |
| Patient Table | Yes | Yes | Yes |
Summary hardware comparison table for the subject and predicate device
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| Multi-NuclearOption - SupportedNuclei | Yes | Yes | Yes |
|---|---|---|---|
| Computer | YesModified | Yes | Yes |
| Coils | YesNew, based on predicate:Tx/Rx Knee 15, Tx/Rx Knee 15Flare, 4 Ch BIBreast coil (already introducedwith reference system) | Yes | Yes |
| Other HWcomponents | New or modified HWcomponents as listed in theDevice Description above | Yes | Yes |
Summary software comparison table for the subject and predicate devices
| Subject Device | Predicate Device | |
|---|---|---|
| Software | MAGNETOM Cima.X with softwaresyngo MR XA61A | MAGNETOM Vida with syngoMR XA50A(K213693) |
| Sequences | ||
| SE-based pulse sequence types | New feature as listed in the DeviceDescription above | Yes |
| GRE-based/Steady-State pulsesequence types | New or modified pulse sequencesas listed in the Device Descriptionabove | Yes |
| EPI-based pulse sequence types | New features as listed in the DeviceDescription above | Yes |
| Spectroscopy pulse sequence types | Yes | Yes |
| Feature and Applications | ||
| Other features andapplications such as:-Application Suites-myExam Assists-Other ImagingApplications | Modified features andapplications as listed in the DeviceDescription above | Yes |
| User interface and user interaction | Yes | Yes |
| Viewing and post-processing | New or modified viewing and post-processing features as listed in theDevice Description above | Yes |
| Workflow and software utilization | Yes | Yes |
| Patient Management | Yes | Yes |
| Scan Modes and Pulse Sequences | Yes | Yes |
| Scanning | Modified and new features andapplications as listed in theCover letter, Device Descriptionand Substantial EquivalenceComparison Tables | Yes |
| Reconstruction | New featureas listed in the Device Descriptionabove | Yes |
| Image Display | Yes | Yes |
| File/Data Management | Yes | Yes |
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Additionally, the pulse sequence MR Fingerprinting (MRF) (K213805) is now available for the subject device MAGNETOM Cima.X with syngo MR XA61A.
The differences have been tested and the conclusion from the non-clinical data suggests that the features bear an equivalent safety and performance profile to that of the predicate device.
8. Nonclinical Tests
The following performance testing was conducted on the subject devices:
| Performance Test | Tested Hardware or Software | Source/Rationale for test |
|---|---|---|
| Software verification and validation | New or modified software features | Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices |
| Sample clinical images | New or modified software features | Guidance for submission of Premarket Notifications for Magnetic Resonance Diagnostic Devices |
| Image quality assessment by sample clinical images | - new / modified pulse sequence types.- comparison images between the new / modified features and the predicate device features | |
| Performance bench test | new and modified hardware | |
| Electrical, mechanical, structural, and related system safety test | System as a whole | - AAMI / ANSI ES60601-1- IEC 60601-2-33 |
| Electrical safety and electromagnetic compatibility (EMC) | System as a whole | IEC 60601-1-2 |
The following performance testing for local coils was conducted on the predicate and the reference devices and can be reused for the subject device:
| Performance Test | Tested Hardware or Software | Source/Rationale for test |
|---|---|---|
| Performance bench test | - SNR and image uniformitymeasurements for coils- Heating measurements for coils | Guidance for Submission ofPremarket Notifications forMagnetic Resonance DiagnosticDevices |
The results from each set of tests demonstrate that the devices perform as intended and are thus substantially equivalent to the predicate device to which it has been compared.
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AI Features/Applications training and validation:
The information below shows an executive summary of training and validation dataset of the AI features:
| Deep Resolve Boost: | Deep Resolve Sharp: | |
|---|---|---|
| Training and Validation data | TSE: more than 25,000 slices HASTE: pre-trained on the TSE dataset and refined with more than 10,000 HASTE slices EPI Diffusion: more than 1,000,000 slices The data covered a broad range of body parts, contrasts, fat suppression techniques, orientations, and field strength. | on more than 10,000 high resolution 2D images. The data covered a broad range of body parts, contrasts, fat suppression techniques, orientations, and field strength. |
| Test Statistics and Test ResultsSummary | The impact of the network has been characterized by several quality metrics such as peak signal-to-noise ratio (PSNR) and structural similarity index (SSIM). Most importantly, the performance was evaluated by visual comparisons to evaluate e.g., aliasing artifacts, image sharpness and denoising levels. | The impact of the network has been characterized by several quality metrics such as peak signal-to-noise ratio (PSNR), structural similarity index (SSIM), and perceptual loss. In addition, the feature has been verified and validated by inhouse tests. These tests include visual rating and an evaluation of image sharpness by intensity profile comparisons of reconstructions with and without Deep Resolve Sharp. |
| Equipment | 1.5T and 3T MRI systems | |
| Clinical Subgroups | No clinical subgroups have been defined for the collected dataset. | |
| Demographic Distribution | Due to reasons of data privacy, we did not record gender, age and ethnicity during data collection. | |
| Reference Standard | The acquired datasets (as described above) represent the ground truth for the training and validation. Input data was retrospectively created from the ground truth by data manipulation and augmentation. This process includes further under-sampling of the data by discarding k-space lines, lowering of the SNR level by addition Restricted of noise and mirroring of k-space data. | The acquired datasets represent the ground truth for the training and validation. Input data was retrospectively created from the ground truth by data manipulation. k-space data has been cropped such that only the center part of the data was used as input. With this method corresponding low-resolution data as input and high-resolution data as output / ground truth were created for training and validation. |
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9. Clinical Tests / Publications
No clinical tests were conducted to support substantial equivalence for the subject devices; however, as stated above, sample clinical images were provided.
Furthermore, additional clinical publications were referenced to provide information on the use of the following features and functions:
| Feature | Publications |
|---|---|
| Deep Resolve Boost EPI Diffusion | [14_1] Bae SH et al., Clinical feasibility of accelerateddiffusion weighted imaging of the abdomen with deeplearning reconstruction: Comparison with conventionaldiffusion weighted imaging, Eur J Radiol., 154 (2022) |
| [14_2] Lee EJ et al., Feasibility of deep learning k-space-to-image reconstruction for diffusion weightedimaging in patients with breast cancers: Focus onimage quality and reduced scan time, Eur J Radiol., 157(2022) | |
| [14_3] Afat S et al., Acquisition time reduction ofdiffusion-weighted liver imaging using deep learningimage reconstruction. Diagn Interv Imaging, (2022).[14_4] Benkert T et al., Improved Clinical DiffusionWeighted Imaging by Combining Deep LearningReconstruction, Partial Fourier, and Super Resolution,ISMRM (2022) | |
| Deep Resolve Boost HASTE | [14_6] Herrmann J et al., Diagnostic Confidence andFeasibility of a Deep Learning Accelerated HASTESequence of the Abdomen in a Single Breath-Hold,Investigative Radiology, Volume 56, Number 5, May2021.[14_7] Shanbhogue K et al. Accelerated single-shot T2-weighted fat-suppressed (FS) MRI of the liver withdeep learning-based image reconstruction: qualitativeand quantitative comparison of image quality withconventional T2-weighted FS sequence. Eur Radiol.2021 May 7.[14_8] Herrmann J et al., Development and Evaluationof Deep Learning-Accelerated Single-Breath-HoldAbdominal HASTE at 3 T Using Variable Refocusing FlipAngles. Invest Radiol. 2021 Apr 22.[14_9] Han S et al., Evaluation of HASTE T2 weightedimage with reduced echo time for detecting focal liverlesions in patients at risk of developing hepatocellularcarcinoma. Eur J Radiol. 2022 Nov 1;157:110588.[14_10] Mule S et al., Fast T2-weighted liver MRI:Image quality and solid focal lesions conspicuity usinga deep learning accelerated single breath-hold HASTEfat-suppressed sequence. Diagn Interv Imaging. 2022Oct;103(10):479-485.[14_11] Ginocchio LA et al., Accelerated T2-weightedMRI of the liver at 3 T using a single-shot techniquewith deep learning based image reconstruction |
| GRE_PC | impact on the image quality and lesion detection.Abdom Radiol (NY). 2022 Sep 28.[14_12] Herrmann J et al., Comprehensive clinicalevaluation of a deep learning-accelerated, single-breath-hold abdominal HASTE at 1.5 T and 3 T. AcadRadiol. 2022 Apr 22:S1076-6332(22)00195-7.[14_13] Ichinohe F. et al., Usefulness of Breath-HoldFat-Suppressed T2-Weighted Images With DeepLearning-Based Reconstruction of the Liver, InvestRadiol., 2022[14_14] Guenthner C. et al. Ristretto MRE: Ageneralized multi-shot GRE-MRE sequence. NMRBiomed 2019; 32:e4049. |
| Ghost reduction (DPG) | [14_24] Hoge WS, Polimeni JR. Dual-polarity GRAPPAfor simultaneous reconstruction and ghost correction ofecho planar imaging data. Magn Reson Med. 2016Jul;76(1):32-44. doi: 10.1002/mrm.25839. Epub 2015 |
| Fleet Reference Scan | [14_5] Polimeni JR, Bhat H, Witzel T, Benner T, FeiweierT, Inati SJ, Renvall V, Heberlein K, Wald LL. Reducingsensitivity losses due to respiration and motion inaccelerated echo planar imaging by reordering theautocalibration data acquisition. Magn Reson Med.2016 Feb;75(2):665-79. doi: 10.1002/mrm.25628. Epub2015 Mar 23. PMID: 25809559; PMCID: PMC4580494. |
| SAMER | [14_25] D. Polak, D N. Splitthoff, etc. Scout acceleratedmotion estimation and reduction (SAMER). MagnReson Med. 2022 Jan;87(1):163-178.[14_26] M. Lang, A. Tabari, etc. Clinical Evaluation ofScout Accelerated Motion Estimation and ReductionTechnique for 3D MR Imaging in the Inpatient andEmergency Department Settings. American Journal ofNeuroradiology 2023 Jan. |
| Complex Averaging | [14_22] Walsh DO, Gmitro AF, Marcellin MW. Adaptivereconstructionof phased array MR imagery. Magn Reson Med. 2000May1;43(5):682-90.[14_23] Kordbacheh H, Seethamraju RT, Weiland E,Kiefer B, Nickel MD, Chulroek T, et al. Image quality anddiagnostic accuracy of complex-averaged high b valueimages in diffusion-weighted MRI of prostate cancer.Abdom Radiol (NY). 2019;44(6):2244–53. |
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10. Safety and Effectiveness
The device labeling contains instructions for use and any necessary cautions and warnings to ensure safe and effective use of the device.
Risk Management is ensured via a risk analysis in compliance with ISO 14971, to identify and provide mitigation of potential hazards early in the design cycle and continuously throughout the development of the product. Siemens Healthcare GmbH adheres to recognized and established industry standards, such as the IEC 60601-1 series, to minimize electrical and mechanical hazards. Furthermore, the device is intended for healthcare professionals familiar with and responsible for the acquisition and post processing of magnetic resonance images.
MAGNETOM Cima.X with software syngo MR XA61A conforms to the following FDA recognized and international IEC, ISO and NEMA standards:
| Recognition Number | ProductArea | Title of Standard | Reference Numberand date | StandardsDevelopmentOrganization |
|---|---|---|---|---|
| 19-4 | General | Medical electrical equipment - part 1:general requirements for basic safetyand essential performance | ES60601-1:2005/(R)2012 andA1:2012C1:2009/(R)2012 | AAMI / ANSI |
| 19-8 | General | Medical electrical equipment - Part 1-2:General requirements for basic safetyand essential performance - CollateralStandard: Electromagnetic disturbances- Requirements and tests | 60601-1-2 Edition4.0:2014-02 | IEC |
| 12-295 | Radiology | Medical electrical equipment - Part 2-33: Particular requirements for thebasic safety and essential performanceof magnetic resonance equipment formedical diagnosis | 60601-2-33 Ed. 3.2b:2015 | IEC |
| 5-125 | General | Medical devices - Application of riskmanagement to medical devices | 14971 Third Edition2019-12 | ISO |
| 5-114 | General I(QS/RM) | Medical devices - Part 1: Application ofusability engineering to medical devices | 62366-1:2015 | ANSI AAMI IEC |
| 13-79 | Software/Informatics | Medical device software - Software lifecycle processes | 62304 Edition 1.12015-06CONSOLIDATEDVERSION | IEC |
| 12-195 | Radiology | NEMA MS 6-2008 (R2014)Determination of Signal-to-Noise Ratioand Image Uniformity for Single-Channel Non-Volume Coils inDiagnostic MR Imaging | MS 6-2008 (R2014) | NEMA |
| 12-349 | Radiology | Digital Imaging and Communications inMedicine (DICOM) | PS 3.1 - 3.20(2022d) | NEMA |
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| 2-258 | Biocompatibility | Biological evaluation of medical devices - part 1: evaluation and testing within a risk management process. (Biocompatibility) | 10993-1 Fifth edition 2018-08 | AAMIANSIISO |
|---|---|---|---|---|
| ------- | ------------------ | -------------------------------------------------------------------------------------------------------------------------------- | ------------------------------- | --------------------- |
11. Conclusion as to Substantial Equivalence
MAGNETOM Cima.X with software syngo MR XA61A has the same intended use and same basic technological characteristics than the predicate device system, MAGNETOM Vida with syngo MR XA50A, with respect to the magnetic resonance features and functionalities. While there are some differences in technical features compared to the predicate device, the differences have been tested and the conclusions from all verification and validation data suggest that the features bear an equivalent safety and performance profile to that of the predicate device and reference devices.
Siemens believes that MAGNETOM Cima.X with software syngo MR XA61A is substantially equivalent to the currently marketed device MAGNETOM Vida with software syngo MR XA50A (K213693, cleared on February 25, 2022).
§ 892.1000 Magnetic resonance diagnostic device.
(a)
Identification. A magnetic resonance diagnostic device is intended for general diagnostic use to present images which reflect the spatial distribution and/or magnetic resonance spectra which reflect frequency and distribution of nuclei exhibiting nuclear magnetic resonance. Other physical parameters derived from the images and/or spectra may also be produced. The device includes hydrogen-1 (proton) imaging, sodium-23 imaging, hydrogen-1 spectroscopy, phosphorus-31 spectroscopy, and chemical shift imaging (preserving simultaneous frequency and spatial information).(b)
Classification. Class II (special controls). A magnetic resonance imaging disposable kit intended for use with a magnetic resonance diagnostic device only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.