RadiForce G22 is intended to be used in displaying for diagnosis in CT, DSA, or MRI, etc., except for a digital mammography system.
Device Story
RadiForce G22 is a 19.6-inch monochrome TFT LCD monitor designed for medical diagnostic imaging. It accepts DVI-D input signals to display 2-megapixel (1200 x 1600) images with 10-bit (1,024 tones) grayscale capability. The device is intended for use by clinicians in a medical environment to view CT, DSA, and MRI scans. It provides high-resolution grayscale visualization to assist physicians in accurate diagnostic interpretation. The monitor features optional software and photo-sensor tools for luminance calibration to ensure display consistency. It is a standalone display workstation component.
Clinical Evidence
Bench testing only. No clinical data provided.
Technological Characteristics
19.6" TFT monochrome LCD panel; 1200 x 1600 resolution; 800 cd/m² brightness; 600:1 contrast ratio; 40 ms response time; DVI-D input; 10-bit grayscale; USB 2.0 ports; power management via DVI-DMPM; compliant with EN60601-1, UL2601-1, and CSA C22.2 No. 601-1.
Indications for Use
Indicated for the display of medical images for diagnostic purposes in CT, DSA, and MRI, excluding digital mammography systems.
Regulatory Classification
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.
Special Controls
*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}------------------------------------------------
K041597
JUN 2 4 2004
## 510(k) Summary as required by 807.92
# 1. Company Identification
EIZO NANAO CORPORATION E120 NANAO OOILI Ola1110.shi, Ishikawarken, 924.8566, Japan Tel: +81-76-274-2468 Fax: +81-76-274-2484
- 2. Official Correspondent
Hiroaki Hashimoto (Mr.)
## 3. Date of Submission
June 8, 2004
- 4. Device Trade name
Monochrome LCD Monitor, RadiForce G22
#### 5. Common Name
Monitor, display, workstation, and others
- 6. Classification
Medical displays were classified in Class II per 21 CFR 890.2050.
#### 7. Predicate Device
: EIZO NANAO CORPORATION Manufacturer : 20.8" Monochrome LCD Monitor Device Name : FC-2091 Model Name : K022109 510(k) No.
#### 8. Description of Device
G22 provides 2 mega pixel (1200 x 1600) RadiForce G22 is a monitor for medical use. readly of or and 10 bit (1,024 tones) simultaneous grayscale display for accurate diagnosis in CT, DSA, and MRI, etc, except for a digital mammography system.
- 9. Intended Use
Mooochrome LCD Monitor, RadiForce G22 is intended to be used in displaying for diagnosis of in CT, DSA, and MRI, etc. These intended usages are same as that of the predicate model of FC2091, K022109.
- 10. Comparison of technological characteristics between new device and predicate device Please refer to Appendix 1.
- 11. Compliance standards Please refer to Appendix 1.
{1}------------------------------------------------
| Items | FC-2091 | G22 |
|-----------------------------|-------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510(k) Number | K022109 | Not known |
| Panel Size and Type | 53 cm (20.8") TFT monochrome LCD panel | 19.6" Class Monochrome LCD Monitor |
| Pixel Pitch | 0.207 mm x 0.207 mm | 0.294 mm x 0.294 mm |
| Available Cabinet Colors | Black | Black, Gray |
| Display Colors | 1.531 grayscale tones | 1,024 million grayscale tones from a pallet of 3,061 |
| Viewing Angles | H: 170°, V: 170° | H: 170°, V: 170° |
| Scanning Frequency (H, V) | 92.86 - 96.72 Hz, 60 Hz | 75 kHz, 60 Hz |
| Native Resolutions | 2048 mm x 1536 mm (landscape),<br>1536 mm x 2048 mm (portrait) | 1200 mm x 1600 mm |
| Brightness | 650 cd/m² | 800 cd/m² |
| Contrast Ratio | 600 : 1 (typical) | 600 : 1 (typical) |
| DOT Clock | 132MHz | 162 MHz |
| Response Time | 50 ms (typical) | 40 ms (typical) |
| Input Signals | DVI Standard 1.0 | DVI Standard 1.0 |
| Input Terminals | DVI-D 24 pin | DVI-D 24 pin |
| USB Ports / Standard | 1 upstream, 2 downstream / Rev. 1.1 | 1 upstream, 2 downstream / Rev. 2.0 |
| Active Display Size (H x V) | 424 mm x 318 mm | 398 mm x 299 mm |
| Viewable Image Size | 529 mm (20.8") (diagonal) | 498 mm (diagonal) |
| Luminance Calibration | Software (Optional)<br>Photo-sensor (Optional) | Software (Optional)<br>Photo-sensor (Optional) |
| Power | AC100-120V/200-240V, 50/60Hz | AC100-120V/200-240V, 50/60Hz |
| Power Management | DVI-DMPM | DVI-DMPM |
| Power Consumption | 70 watts (typical) | 70 watts (typical) |
| Power Save Mode | Less than 15 watts | Less than 6 watts |
| Dimensions (W x H x D) | With Stand:<br>368 x 520 mm – 592 x 209 mm<br>Without Stand:<br>368 mm x 474 mm x 84 mm | With Stand:<br>337 x 493 mm – 575 x 208.5 mm<br>Without Stand:<br>337 mm x 441 mm x 78.5 mm |
| NET Weight | With Stand: 9.5 kg<br>Without Stand: 6.3 kg | With Stand: 9.1 kg<br>Without Stand: 5.9 kg |
| Certifications & Standards | TUV/GM, CE, CB, EN60601-1,<br>UL2601-1, CSA C22.2 No. 601-1,<br>FCC-A, Canadian ICES-003-A,<br>VCCI-A, FDA 510(k) | TUV/GM, CE Medical Device Directive, CB (EN60601-1), cTUVus<br>(UL2601-1, CSA C22.2 No. 601-1),<br>FCC-B, Canadian ICES-003-A,<br>VCCI-A, EIZO ECO Products 2002 |
{2}------------------------------------------------
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with three bars representing the agency's mission. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular fashion around the eagle symbol. The logo is in black and white.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JUN 2 4 2004
Mr. Hiroaki Hashimoto Manager of Engineering Management Section EIZO NANAO Corporation 153 Shimokashiwano, Matto, Ishikawa 924-8566 JAPAN
Re: K041597 Trade/Device Name: Monochrome LCD Monitor, RadiForce G22 Regulation Number: 21 CFR 892.2050 Regulation Name: Picture archiving and communications system Regulatory Class: II Product Code: 90 LLZ Dated: June 8, 2004 Received: June 14, 2004
Dear Mr. Hashimoto:
We have reviewed your Section 510(k) premarket notification of intent to market the device We nave reviewed your Scenon > Po(x) promation is substantially equivalent (for the indications relerenced above and nave determined in marketed predicate devices marketed in interstate for use stated in the encrosure) to regally manage of the Medical Device American be of Days commerce phor to May 20, 1976, the closener with the provisions of the Federal Food, DNA devices that have been resulted in assoredance approval of a premarket approval application (PMA). and Cosment Act (Act) that do not require approvise the general controls provisions of the Act. The You may, therefore, market the device, easy of every of ennual registration, listing of general controls provisions of the rice 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 If your device is classified (soo aoore) ins. Existing major regulations affecting your device can may be subject to such additional och. One - Little 21, Parts 800 to 898. In addition, FDA may oc found in the OOGS acements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean Please be advised that FDA s issuance of a cases in the ther requirements of the Act that FDA hade a decemmation that your cover correst by other Federal agencies. You must comply
of any Federal statutes and regulations administered by other Federal and CEP P or any Federal statutes and regalations administration and listing (21 CFR Part with an the Act s requirements, meracting practice requirements as set forth in the 807), labeling (21 CFR Part 820); and if applicable, the electronic product
quality systems (QS) regulation (21 CFR Part 820); and if application (2006) 1950 quality systems (QB) regardice (Sections 531-542 of the Act); 21 CFR 1000-1050.
{3}------------------------------------------------
This letter will allow you to begin marketing your device as described in your Section 510(k) I ms letter will anow you to ocgin manioung your device of your device of your device to a legally premarket notincation: "The PDF intellig sification 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 If you desire specific advice to: your General 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 Additionally, 10. questions on and please note the regulation entitled, "Misbranding Other of Comphanoour (2017 07 1 33 (21 CFR Part 807.97) you may obtain. Other general by receice to premarred notified.out (er the Act may be obtained from the Division of Small mormation on your responsionner Assistance at its toll-free number (800) 638-2041 or 11andraocarers, 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
{4}------------------------------------------------
# Indications for Use
K041597
510(k) Number (if known): Not-known
Device Name: Monochrome LCD Monitor, RadiForce G22
Indications For Use:
finaletterns 1 0 - 2 - 11:11
RadiForce G22 is intended to be used in displaying for diagnosis in CT, DSA, or MRI, etc., except for a digital mammography system.
Prescription Use
(Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use _________________________________________________________________________________________________________________________________________________________ (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
David h. Lyman
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.