(161 days)
CT Colonography is a CT image analysis software package which allows the visualization of 2D and 3D medical image data of the colon derived from DICOM 3.0 compliant CT scans for the purpose of screening of a colon to detect polyps, masses, cancers, and other lesions. It provides functionality for 2D/3D rendering, bookmarking of suspected lesions, synchronized viewing of supine & prone data sets, and an object oriented endoluminal display. In comparison to colonoscopy, this tool has an advantage of depth penetration due its 3D presentation capability. It is intended for use by Radiologists, Clinicians, and referring Physicians to process, render, review, archive, print, and distribute colon image studies.
CT Colonography is an image analysis software package that includes all the required software that allows the user to study the inside, wall, and outside of the colon using CT-acquired helical images. The tool is laid out to facilitate the detection of colonic lesions. CT Colonography is an advanced visualization software option that provides endoluminal views of anatomical structures. The flexibility of this software allows the user to move interactively from air paths to inner vessels visualization and thus, it is not limited to inner navigation of structures as lungs and sinuses. Volume Analysis (includes both. CT/MR Windows Workstation, K913770 and 3D & Dentascan for Windows K923077) provides the base for Colonography, CTC/Nav2 and Nav2 alone, which allows an increase in the ease of use and productivity. Colonography, CTC/Nav2 and Nav2 alone, also use some options of Volume Rendering (AW Volume Render Option K972399), which allows the user to quickly isolate structure of interest and render volumetric data in three dimensions.
The provided text does not contain detailed information about specific acceptance criteria or a dedicated study proving that the device meets those criteria. Instead, it focuses on establishing substantial equivalence to previously cleared devices.
Here's an analysis based on the available information:
1. Table of Acceptance Criteria and Reported Device Performance:
The document does not explicitly state quantitative acceptance criteria or provide a table of reported device performance metrics against such criteria. The "Conclusions" section in {1} states: "The CT Colonography option (K023943) does not result in any new potential safety risks and performs as well as devices currently on the market." This suggests that the performance standard is to be equivalent to the predicate devices, rather than meeting specific numerical thresholds.
2. Sample Size Used for the Test Set and Data Provenance:
The document does not mention a specific test set, its sample size, or its data provenance (e.g., country of origin, retrospective or prospective nature). The safety and effectiveness claim is based on substantial equivalence to predicate devices, implying that their established performance is sufficient.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Their Qualifications:
This information is not provided. Since no specific test set or study validating device performance is described, the process of establishing ground truth for such a set is not detailed.
4. Adjudication Method for the Test Set:
This information is not provided.
5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, and the Effect Size:
The document does not indicate that an MRMC comparative effectiveness study was conducted. The focus is on demonstrating that the CT Colonography software provides similar functionality and safety as the predicate devices.
6. If a Standalone (Algorithm Only Without Human-in-the-Loop Performance) Was Done:
The document does not explicitly state whether a standalone algorithm performance study was done. The device is described as an "image analysis software package" intended for "Radiologists, Clinicians, and referring Physicians to process, render, review, archive, print, and distribute colon image studies," implying it is used with human interaction, not as a standalone diagnostic tool.
7. The Type of Ground Truth Used:
The document does not specify the type of ground truth used for any performance evaluation, as no such evaluation is detailed. Given the nature of CT Colonography for lesion detection, a typical ground truth would likely involve colonoscopy with biopsy/histopathology or surgical pathology.
8. The Sample Size for the Training Set:
The document does not mention a training set or its sample size.
9. How the Ground Truth for the Training Set Was Established:
This information is not provided, as no training set is discussed.
Summary of Device Acceptance Rationale:
The core of the acceptance for the "CT Colonography" (K023943) device is its substantial equivalence to two predicate devices:
The manufacturer, GE Medical Systems, asserts that their CT Colonography option "does not result in any new potential safety risks and performs as well as devices currently on the market." This suggests that the acceptance criteria are met by demonstrating that the new device shares fundamental technological characteristics, intended use, and performance characteristics (as understood from the predicate devices) without raising new questions of safety and effectiveness. The "Conclusions" section acts as the primary statement on how the device meets "acceptance criteria" by equating its performance to already cleared devices.
The FDA's clearance letter (pages {2} and {3}) confirms this approach, stating they "have determined the device is substantially equivalent... to legally marketed predicate devices." This regulatory pathway does not typically require extensive new clinical studies to prove performance against novel acceptance criteria, but rather a demonstration of similarity to existing safe and effective devices.
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Image /page/0/Picture/0 description: The image shows a sequence of alphanumeric characters, specifically 'K023943'. The characters are written in a bold, sans-serif font, and they appear to be handwritten or stylized. The sequence consists of an uppercase 'K' followed by the numbers '023943'.
MAY 0 6 2003
GE Medical Systems 3000 N. Grandview Blvd. Waukesha, WI 53188
510(k) SUMMARY OF SAFETY AND EFFECTIVENESS
This 510(k) summary of safety and effectiveness information is submitted in accordance with the requirements of 21 CFR Part 807.87(h).
Larry A. Kroger, Ph.D. Submitter Senior Regulatory Program Manager Telephone: (262) 544-3894, FAX: (262) 548-4768 Date Prepared: November 25, 2002
PRODUCT IDENTIFICATION
| Name: | CT Colonography |
|---|---|
| Classification Name: | Accessory to Computed Tomography System |
| Classification Panel | 892 - Radiology |
| ClassificationNumber: | 892.1750 |
| Manufacturer : | General Electric Medical Systems283, rue de la Miniere78533 Buc Cedex, FRANCE |
| Distributor: | General Electric Medical Systems, Milwaukee, WI |
| Marketed Devices | The CT Colonography option (K023943) is substantially equivalent to thedevice listed below: |
| Model:Manufacturer:510(k) #: | CT Colonography/Navigator2General Electric Medical Systems, Milwaukee, WIK012313 |
| Model:Manufacturer:510(k) #: | V3D-ColonViatronix Inc., Stony Brook, NYK020658 |
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Device Description:
CT Colonography is an image analysis software package that includes all the required software that allows the user to study the inside, wall, and outside of the colon using CT-acquired helical images. The tool is laid out to facilitate the detection of colonic lesions. CT Colonography is an advanced visualization software option that provides endoluminal views of anatomical structures. The flexibility of this software allows the user to move interactively from air paths to inner vessels visualization and thus, it is not limited to inner navigation of structures as lungs and sinuses. Volume Analysis (includes both. CT/MR Windows Workstation, K913770 and 3D & Dentascan for Windows K923077) provides the base for Colonography, CTC/Nav2 and Nav2 alone, which allows an increase in the ease of use and productivity. Colonography, CTC/Nav2 and Nav2 alone, also use some options of Volume Rendering (AW Volume Render Option K972399), which allows the user to quickly isolate structure of interest and render volumetric data in three dimensions.
Indications for Use :
CT Colonography is a CT image analysis software package which allows the visualization of 2D and 3D medical image data of the colon derived from DICOM 3.0 compliant CT scans for the purpose of screening of a colon to detect polyps, masses, cancers, and other lesions. It provides functionality for 2D/3D rendering, bookmarking of suspected lesions, synchronized viewing of supine & prone data sets, and an object oriented endoluminal display. In comparison to colonoscopy, this tool has an advantage of depth penetration due its 3D presentation capability. It is intended for use by Radiologists, Clinicians, and referring Physicians to process, render, review, archive, print, and distribute colon image studies.
Comparison with Predicate:
CT Colonography is an image analysis software built on Colonography/Navigator2 features that allows the user to study the inside, wall, and outside of the colon using CT acquired helical images. The tool is laid out to facilitate the detection of colonic lesions. The functional features of this package are substantially equivalent to that of the following device:
| Device Name | FDA Clearance Number |
|---|---|
| CT Colonography / Navigator 2 | K012313 |
| V3D-Colon | K020658 |
Adverse Effects on Health :
The potential hazards are identified in a risk management summary (hazard analysis) and are controlled by:
- · Software Development, Validation and Verification Process to ensure performance to specifications, Federal Regulations and user requirements.
- · Adherence to industry and international standards.
Conclusions:
The CT Colonography option (K023943) does not result in any new potential safety risks and performs as well as devices currently on the market. GE considers features of the CT Colonography to be equivalent to those of Colongrapy/Navigator2 (K012313) and V3D-Colon (K020658).
{2}------------------------------------------------
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAY 0 6 2003
Mr. Marc Orellou CT Safety and Regulation Engineer GE Medical Systems 3000 N. Grandview Blvd. WAUKESHA WI 53188
DEPARTMENT OF HEALTH & HUMAN SERVICES
Re: K023943
Trade/Device Name: CT Colonography Regulation Number: 21 CFR 892.1750 Regulation Name: Computed tomography x-ray system Regulatory Class: II Product Code: 90 JAK Dated: February 26, 2003 Received: February 28, 2003
Dear Mr. Orellou:
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 (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. 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.
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.
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); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (sections 531-542 of the Act); 21 CFR 1000-1050.
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This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at one of the following numbers, based on the regulation number at the top of the letter:
| 8xx.1xxx | (301) 594-4591 |
|---|---|
| 876.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4616 |
| 884.2xxx, 3xxx, 4xxx, 5xxx, 6xxx | (301) 594-4616 |
| 892.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4654 |
| Other | (301) 594-4692 |
Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97) you may obtain. Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html.
Sincerely yours,
Nancy C. Brogdon
Nancy C. Brogdon Director, Division of Reproductive. Abdominal and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
Page 2
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STATEMENT OF INTENDED USE
510(k) Number (if known): K023943
Device Name: CT Colonography
Indications For Use:
CT Colonography is a CT image analysis software package which allows the visualization of 2D and 3D medical image data of the colon derived from DICOM 3.0 compliant CT scans for the purpose of screening of a colon to detect polyps, masses, cancers, and other lesions. It provides functionality for 2D/3D rendering, bookmarking of suspected lesions, synchronized viewing of supine & prone data sets, and an object oriented endoluminal display. In comparison to colonoscopy, this tool has an advantage of depth penetration due to its 3D presentation capability. It is intended for use by Radiologists, Clinicians, and referring Physicians to process, render, review, archive, print and distribute colon image studies.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use
(Per 21 CFR 801.109) $\checkmark$
-OR-
Over-The-Counter Use ------
David R. Lygum
§ 892.1750 Computed tomography x-ray system.
(a)
Identification. A computed tomography x-ray system is a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.(b)
Classification. Class II.