(155 days)
Not Found
No
The document mentions a new image post-processing algorithm called MLP3, but there is no mention of AI, ML, deep learning, or any related terms. The performance studies focus on image quality evaluation and noise/scatter correction, which can be achieved through traditional image processing techniques.
No.
The device is described as diagnostic software for post-processed X-ray images, focusing on image quality and integration for viewing and analysis, which are diagnostic functions, not therapeutic ones.
Yes
The device description explicitly states, "LG Acquisition Workstation Software ASHK100G is a diagnostic software for final post-processed X-ray images..."
No
The device description explicitly states it is "diagnostic software for final post-processed X-ray images of body parts of actual patients acquired through the integration of digital X-ray detectors (DXDs) and X-ray generators." While the device itself is software, its function is intrinsically tied to and integrated with hardware components (digital X-ray detectors and X-ray generators) for image acquisition. The performance studies also include compatibility testing with a generator, further indicating a reliance on hardware.
Based on the provided information, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use/Indications for Use: The intended use clearly states that the software is used for saving, viewing, analyzing, transferring, and printing medical images (specifically X-ray images). This is related to the interpretation and management of images generated from within the patient's body, not from testing samples taken from the body.
- Device Description: The description reinforces that it's a diagnostic software for post-processed X-ray images of body parts. It integrates with digital X-ray detectors and X-ray generators.
- Input Imaging Modality: The input is X-ray, which is an imaging modality used to visualize structures within the body.
- Anatomical Site: The anatomical site is "body parts," again referring to structures within the patient.
IVD devices are used to examine specimens (like blood, urine, tissue) taken from the human body to provide information about a person's health. This software deals with images generated from the body itself, not from samples taken from it.
N/A
Intended Use / Indications for Use
Software used in a device that saves, enlarges, reduces, views as well as analyzes, transfers and prints medical images. (excluding fluoroscopic, angiographic, and mammographic applications.)
Product codes
LLZ
Device Description
LG Acquisition Workstation Software ASHK100G is a diagnostic software for final post-processed X-ray images of body parts of actual patients acquired through the integration of digital X-ray detectors (DXDs) and X-ray generators. By integrating the [MWL] and the [PACS] server, this software can be used to check the information and images of the patients' body parts in real time in an HIS (Hospital Information System) based environment.
A new image post-processing algorithm, MLP3 has been added to the proposed device. MLP3 provides image quality that is substantially equivalent to or slightly better than the predicate device even at lower x-ray dose levels. In addition, the functions have been added or modified to improve the user interface.
Mentions image processing
Yes
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
X-ray
Anatomical Site
body parts
Indicated Patient Age Range
adult and pediatric
Intended User / Care Setting
HIS (Hospital Information System) based environment.
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
A clinical study was conducted to support our marketing claims. From one small clinical study performed at one clinical site, images were acquired from one stationary x-ray system with a fixed tube voltage of 120 kVp and dose levels were adjusted by varying the exposure time with other imaging parameters (mA, distance, grid) kept constant. Clinical images acquired from forty patients were evaluated by three board certified radiologists. The study showed that the image quality of adult chest PA x-rays taken at lower radiation doses and processed with our new image processing algorithm improved the overall diagnostic image quality, which became substantially equivalent to that of x-ray images acquired at standard dose levels. On average, radiation dose of images acquired at lower doses were approximately 50% less than that of images acquired at standard doses.
A clinical study was conducted to support our marketing claims. From one small clinical study performed at one clinical site, images were acquired from one mobile x-ray system with and without using an anti-scatter grid. Clinical images acquired from forty patients were evaluated by two board certified radiologists. The study showed that with our new algorithm, the image quality is improved for adult chest AP x-rays taken without an anti-scatter grid, and the improved image quality becomes comparable to images taken with an anti-scatter grid. On average, the radiation dose of non-grid images were 37% lower than that of grid images.
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
- In house image quality evaluation for adults: For adults, we provided an image quality comparison report. Clinical images of 30 common radiographic positions, recommended by FDA's guidance for digital x-ray detectors, are presented. Clinical images were post-processed with our new (MLP3) and old (MLP2) image processing algorithms separately, and their image quality were evaluated. The results show that our new image processing algorithm provides image quality equivalent to or slightly better than the predicate device.
- In house image quality evaluation for pediatric and infant: For pediatric and infant imaging, we provided phantom testing results for a range of exams including chest, skull, abdomen and pelvis. These phantom images were post-processed with our new (MLP3) and old (MLP2) image processing algorithms separately, and their image quality were evaluated. The results show that our new image processing algorithm provides image quality equivalent to or slightly better than the predicate device.
- Clinical Study for MLP3 Noise Reduction Algorithm: Clinical images acquired from forty patients were evaluated by three board certified radiologists. The study showed that the image quality of adult chest PA x-rays taken at lower radiation doses and processed with our new image processing algorithm improved the overall diagnostic image quality, which became substantially equivalent to that of x-ray images acquired at standard dose levels. On average, radiation dose of images acquired at lower doses were approximately 50% less than that of images acquired at standard doses.
- Clinical Study for MLP3 Scatter Correction Algorithm: Clinical images acquired from forty patients were evaluated by two board certified radiologists. The study showed that with our new algorithm, the image quality is improved for adult chest AP x-rays taken without an anti-scatter grid, and the improved image quality becomes comparable to images taken with an anti-scatter grid. On average, the radiation dose of non-grid images were 37% lower than that of grid images.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s)
Reference Device(s)
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 892.2050 Medical image management and processing system.
(a)
Identification. A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.(b)
Classification. Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).
0
December 10, 2021
Image /page/0/Picture/1 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & 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 FDA logo is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
LG Electronics Inc. % Bokyeong Kim Senior Researcher GMS Consulting 4th Floor, Digital Cube, 34, Sangamsan-ro Seoul, Mapo-gu 03909 REPUBLIC OF KOREA
Re: K212137
Trade/Device Name: ASHK100G Regulation Number: 21 CFR 892.2050 Regulation Name: Medical Image Management And Processing System Regulatory Class: Class II Product Code: LLZ Dated: November 5, 2021 Received: November 8, 2021
Dear Bokyeong Kim:
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. 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 located 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.
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
1
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 803) for devices or postmarketing safety reporting (21 CFR 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 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 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 medical devices and radiation-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.
. for
Thalia T. Mills, Ph.D. Director Division of Radiological Health OHT7: Office of In Vitro Diagnostics and Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
2
Indications for Use
510(k) Number (if known)
Device Name ASHK100G
Indications for Use (Describe)
Software used in a device that saves, enlarges, reduces, views as well as analyzes, transfers and prints medical images. (excluding fluoroscopic, angiographic, and mammographic applications.)
| Type of Use (Select one or both, as applicable) |
|---|
| Prescription Use (Part 21 CFR 801 Subpart D) |
| Over-The-Counter Use (21 CFR 801 Subpart C) |
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3
Image /page/3/Picture/1 description: The image shows the LG logo. The logo consists of a red circle with a white stylized "L" and "," inside, resembling a face. To the right of the circle are the letters "LG" in gray, with the tagline "Life's Good" underneath.
77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea Tel: +82-1544-7777
510(k) Summary
[As Required by 21 CFR 807.92]
1. Date Prepared [21 CFR 807.92(a)(a)]
July 2, 2021
●
●
2. Submitter's Information [21 CFR 807.92(a)(1)]
- Name of Sponsor: LG Electronics Address: 77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, Republic of -Korea, 3938
- Contact Name: Jinhwan Jun / Chief Research Engineer Telephone No.: +82-31-8066-5641 --Email Address: jinhwan.jun@lge.com
- Name of Manufacturer: LG Electronics ● 77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, Republic of -Address: Korea, 3938
3. Trade Name, Common Name, Classification [21 CFR 807.92(a)(2)]
| Product Name | LG Acquisition Workstation Software |
|---|---|
| Model Name | ASHK100G |
| Trade Name | X-Clever |
| Device Classification Name | Medical image management and processing |
| system | |
| Regulation Number | 21 CFR 892.2050 |
| Classification Product Code | LLZ |
| Product Code Name | System, Image Processing, Radiological |
| Device Class | II |
| 510k Review Panel | Radiology |
4
Image /page/4/Picture/0 description: The image shows the LG logo with the text "Life's Good" underneath it. Below the logo is the address "77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea". The phone number "Tel: +82-1544-7777" is on the last line.
4. Identification of Predicate Device(s) [21 CFR 807.92(a)(3)]
The identified predicate devices within this submission are shown as follow:
Predicate Device
- 510(k) Number:
- Applicant:
- Trade/Device Name:
- Regulation Name: ●
- Requlation Number:
- Classification Product Code: LLZ
- Device Class: II ●
- . 510(k) Review Panel: Radiology
The predicate device has not been subject to a design-related recall
LG Electronics
21 CFR 892.2050
Picture archiving and communications system
ASHK100G
5. Description of the Device [21 CFR 807.92(a)(4)]
LG Acquisition Workstation Software ASHK100G is a diagnostic software for final post-processed X-ray images of body parts of actual patients acquired through the integration of digital X-ray detectors (DXDs) and X-ray generators. By integrating the [MWL] and the [PACS] server, this software can be used to check the information and images of the patients' body parts in real time in an HIS (Hospital Information System) based environment.
A new image post-processing algorithm, MLP3 has been added to the proposed device. MLP3 provides image quality that is substantially equivalent to or slightly better than the predicate device even at lower x-ray dose levels. In addition, the functions have been added or modified to improve the user interface.
6. Indications for Use [21 CFR 807.92(a)(5)]
Software used in a device that saves, enlarges, reduces, views as well as analyzes, transfers and prints medical images. (excluding fluoroscopic, angiographic, and mammographic applications.)
5
Image /page/5/Picture/0 description: The image shows the LG logo with the tagline "Life's Good" underneath. Below the logo is the address: 77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea. The phone number is also listed as Tel: +82-1544-7777.
7. Technological Characteristics (Equivalence to Predicate Device) [21 CFR 807.92(a)(6)]
ASHK100G is medical software. It digitalizes the signal sent from the detector and displays the x-ray image. Also, it can enter patient information, shot information, and other necessary references for convenience.
Compared with the predicate device ASHK100G (Ver 1.00), the technological characteristics of the proposed device, ASHK100G (Ver 3.01.XX), are substantially equivalent to those of the predicate device. The proposed device is functionally similar to the predicate device. The table below presents comparisons for each device:
| Proposed Device | Predicate Device | Note | ||
|---|---|---|---|---|
| K Number | Not known | K191188 | - | |
| Manufacturer | LG Electronics | LG Electronics | Same | |
| Model name | ASHK100G | ASHK100G | Same | |
| Product Code | LLZ | LLZ | Same | |
| Regulation | ||||
| Number | 21 CFR 892.2050 | 21 CFR 892.2050 | Same | |
| 510(k) Review | ||||
| Panel | Radiology | Radiology | Same | |
| Indications for | ||||
| Use | Software used in a | |||
| device that saves, | ||||
| enlarges, reduces, | ||||
| views as well as | ||||
| analyzes, transfers and | ||||
| prints medical images. | ||||
| (excluding fluoroscopic, | ||||
| angiographic, and | ||||
| mammographic | ||||
| applications.) | Software used in a | |||
| device that saves, | ||||
| enlarges, reduces, | ||||
| views as well as | ||||
| analyzes, transfers | ||||
| and prints medical | ||||
| images. (excluding | ||||
| fluoroscopic, | ||||
| angiographic, and | ||||
| mammographic | ||||
| applications.) | Same | |||
| SW Version | 3.01.XX | 1.00 | Modified | |
| Processor | Intel 6th gen i5 | Intel® Core i5 or | ||
| higher | Same | |||
| RAM | 8GB or higher | 8GB or higher | Same | |
| Hard Disk | 512 GB or greater | |||
| recommended | min. 500GByte | Same | ||
| Network | Dual Ethernet | |||
| 100/1000Mbps | 100MBit or 1GBit | Same | ||
| Proposed Device | Predicate Device | Note | ||
| Operation | ||||
| Software | Microsoft Windows | |||
| 8.1(64 bit) Microsoft | ||||
| Windows 10(64 bit) | Microsoft Windows | |||
| 7(64 bit) | ||||
| Microsoft Windows | ||||
| 8.1(64 bit) Microsoft | ||||
| Windows 10(64 bit) | Modified | OS recommended | ||
| specifications change | ||||
| for better program | ||||
| compatibility and | ||||
| image processing | ||||
| performance | ||||
| Resolution | 1920 x 1080, | |||
| 3840 x 2160 | min. 1920 x 1080 | Modified | Available resolutions | |
| specified for full | ||||
| compatibility | ||||
| (Program doesn't | ||||
| support the not FHD | ||||
| and not UHD case | ||||
| fully) | ||||
| Generator | ||||
| Control protocol | Yes | Yes | Same | |
| Image | ||||
| Processing | Yes |
- MLP2 image
processing algorithm - MLP3 image
processing algorithm | Yes - MLP2 image
processing algorithm | Modified | Improves image
quality even at lower
x-ray doses
(The proposed device
also supports MLP2 for
existing users.)
If [Apply MLP3] option
in `Advanced
processing' menu is
selected, the MLP3
algorithm is applied. |
| Windowing | Yes | Yes | Same | |
| Image
formatting | Yes
(1x1,1x2,2x2,3x3) | Yes
(1x1,2x2,3x3,4x4) | Modified | Modified for more used
layout types |
| Body map
function | Yes | No | Modified | Modified for adding a
patient study easily |
| Exposure index
function | Yes | No | Modified | For displaying how
much x-ray radiation
exposed compared to
target value |
| Scale function | Yes | No | Modified | To measure object size
roughly without any
tool usage in viewer
(Specific site
requirements) |
| SW Grid | Yes | No | Modified | Improves the image
quality of a chest x-ray
image acquired
without an anti-scatter
grid. |
| Visual grid
function | Yes | No | Modified | Like scale function, it
measures object size |
| | Proposed Device | Predicate Device | Note | |
| | | | roughly without any
tool usage in viewer
User can check object
active area in grid
pattern | |
| Worklist merge | Yes | No | Modified
In case of a patient
with multiple studies,
user can check all
studies in exam menu
just one entry | |
| Auto ROI size | Yes | No | Modified
Added to use default
shutter ROI area on
each body part for
better usage | |
| Electronic zoom | Yes | Yes | Same | |
| Image rotation | Yes | Yes | Same | |
| Image
annotation | Yes | Yes | Same | |
| Image Stitch | Yes | Yes | Same | |
| DICOM Worklist | Yes | Yes | Same | |
| DICOM Store | Yes | Yes | Same | |
| DICOM Print | Yes | Yes | Same | |
[Table. Comparison of Proposed Device to Predicate Device]
6
Image /page/6/Picture/0 description: The image shows the LG logo. The logo consists of a red circle with a stylized white "L" and "G" inside, next to the letters "LG" in gray. Below the letters "LG" is the slogan "Life's Good" in a smaller font.
77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea Tel: +82-1544-7777
7
Image /page/7/Picture/0 description: The image shows the LG logo. The logo consists of a red circle with a stylized white "L" and "G" inside, resembling a face. To the right of the circle, the letters "LG" are written in gray, and below them, the phrase "Life's Good" is written in a smaller font.
77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea Tel: +82-1544-7777
The predicate device is a previous version of the proposed device. The modified (improved) items from predicate device are described in above table. The main change point is the addition of MLP3, a new image post-processing algorithm, and other changes to improve the Use interface. MLP3 algorithm is upgraded with employing noise reduction algorithm and scatter correction algorithm for improvement of image quality. MLP3 noise reduction algorithm predicts noise present in low dose images and adaptively reduces the noise, by which image quality is improved. And, MLP3 scatter correction algorithm predicts scattered x-ray present in images acquired without an anti-scatter grid and adaptively reduces the scattered radiation, by which image quality is improved.
There are no significant differences between subject device and the predicate device that would adversely affect the use of the product. The proposed device has been tested clinically for the new post processing algorithm and software has been validated.
8
Image /page/8/Picture/0 description: The image shows the LG logo. The logo consists of a red circle with a white stylized "L" inside, next to the letters "LG" in gray. Below the letters "LG" is the text "Life's Good" in a smaller gray font.
- Sanho-daero, Gumi-si. Gyeongsangbuk-do, 39381, Republic of Korea Tel: +82-1544-7777
8. Non-Clinical Test Summary [21 CFR 807.92(b)(1)]
The following data were provided in support of the substantial equivalence determination:
1) Software Validation
The ASHK100G is MODERATE level of concern software was designed and developed according to a software development process and was verified and validated. Software information is provided in accordance with FDA guidance: The content of premarket submissions for software contained in medical devices, on May 11, 2005
- Software Validation
- Compatibility with Generator Test
- Measuring Function Verification
- Software Function Test
- Performance for Stitch Feature
- Exposure Index
2) Cybersecurity
- Content of Premarket Submissions for Management of Cybersecurity in Medical Devices, on October2, 2014
3) Performance Test
-
MLP3 post processing algorithm .
To prove that our proposed device is suitable for imaging adult and pediatric body parts, we have provided bench testing results, as follows, for general imaging characteristics of our new device in comparison with our predicate device: -
In house image quality evaluation for adults
: For adults, we provided an image quality comparison report. Clinical images of 30 common radiographic positions, recommended by FDA's guidance for digital x-ray detectors, are presented. Clinical images were post-processed with our new (MLP3) and old (MLP2) image processing algorithms separately, and their image quality were evaluated. The results show that our new image processing algorithm provides image quality equivalent to or slightly better than the predicate device.
9
Image /page/9/Picture/0 description: The image shows the LG logo with the tagline "Life's Good" underneath. Below the logo is the address "77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea". The phone number "Tel: +82-1544-7777" is listed below the address.
- In house image quality evaluation for pediatric and infant
: For pediatric and infant imaging, we provided phantom testing results for a range of exams including chest, skull, abdomen and pelvis. These phantom images were post-processed with our new (MLP3) and old (MLP2) image processing algorithms separately, and their image quality were evaluated. The results show that our new image processing algorithm provides image quality equivalent to or slightly better than the predicate device.
9. Clinical Test Summary [21 CFR 807.92(b)(2)]
The proposed device (ASHK100G, ver 3.01.XX) includes new image processing algorithm (MLP3), which improves the image quality of x-ray images acquired at standard and low radiation doses. The new MLP3 algorithm provides image quality that is substantially equivalent to or slightly better than the predicate device (ASHK100G, ver 1.00) even at lower x-ray doses.
The new MLP3 algorithm incorporates two sub-algorithms:
(1) MLP3 noise reduction algorithm predicts noise present in low dose images and adaptively reduces the noise, by which image quality is improved. The image quality of the low dose image is enhanced and becomes comparable to that of an image taken at standard x-ray dose level.
A clinical study was conducted to support our marketing claims. From one small clinical study performed at one clinical site, images were acquired from one stationary x-ray system with a fixed tube voltage of 120 kVp and dose levels were adjusted by varying the exposure time with other imaging parameters (mA, distance, grid) kept constant. Clinical images acquired from forty patients were evaluated by three board certified radiologists. The study showed that the image quality of adult chest PA x-rays taken at lower radiation doses and processed with our new image processing algorithm improved the overall diagnostic image quality, which became substantially equivalent to that of x-ray images acquired at standard dose levels. On average, radiation dose of images acquired at lower doses were approximately 50% less than that of images acquired at standard doses.
10
Image /page/10/Picture/0 description: The image shows the LG logo with the text "Life's Good" underneath it. Below the logo is the address "77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea". The phone number "Tel: +82-1544-7777" is listed below the address.
(2) MLP3 scatter correction algorithm predicts scattered x-ray present in images acquired without an anti-scatter grid and adaptively reduces the scattered radiation, by which image quality is improved. The resulting image quality of the non-qrid image is enhanced and becomes comparable to that of an image taken with an anti-scatter grid.
A clinical study was conducted to support our marketing claims. From one small clinical study performed at one clinical site, images were acquired from one mobile x-ray system with and without using an anti-scatter grid. Clinical images acquired from forty patients were evaluated by two board certified radiologists. The study showed that with our new algorithm, the image quality is improved for adult chest AP x-rays taken without an anti-scatter grid, and the improved image quality becomes comparable to images taken with an anti-scatter grid. On average, the radiation dose of non-grid images were 37% lower than that of grid images.
10.Substantial Equivalence [21 CFR 807.92(b)(1) and 807.92]
There are no significant differences between proposed device and the predicate devices that would adversely affect the use of the product. It is substantially equivalent to these devices in indications for use and technology characteristics. ASHK100G ver 3.01.XX is improved and added the functions compared to ASHK100G ver 1.00. The SW Validation, hazard analysis, risk control and performance test were conducted for the software features which are added or changed from ASHK100G (ver 1.00), the previous version.
11
Image /page/11/Picture/0 description: The image shows the LG logo with the text "Life's Good" underneath it. Below the logo is the address "77, Sanho-daero, Gumi-si, Gyeongsangbuk-do, 39381, Republic of Korea". The phone number "Tel: +82-1544-7777" is listed below the address.
11.Conclusion [21 CFR 807.92(b)(3)]
There are no significant differences between the ASHK100G and the predicate device(s) that would adversely affect the use of the product. The updated ASHK100G version 3.01.XX is as safe and effective as the predicate version previously cleared in K191188. The subject device has the same intended use and similar technological characteristics, with differences supported by performance validation testing demonstrating that the subject device is safe and effective as the predicate device. Thus, the technological differences between ASHK100G version 3.01.XX and its predicate device raise no new issues of safety or effectiveness, and the updated ASHK100G version 3.01.XX is substantially equivalent.