RadiForce RX320 is intended to be used in displaying and viewing digital images for diagnosis of X-ray or MRI, etc. by trained medical practitioners. RadiForce RX320 does not support the display of mammography images for diagnosis.
Device Story
RadiForce RX320 is a 21.2-inch color LCD medical display; used by trained medical practitioners for viewing digital diagnostic images (X-ray, MRI). Device receives digital video input via DVI-D interface; transforms input signals into high-definition visual output. Features Digital Uniformity Equalizer (DUE) to compensate for luminance non-uniformity; improved brightness (900 cd/m2) and contrast (1000:1) compared to predicate. Operates in clinical environments; supports optional photo-sensor and calibration software for luminance management. Output allows clinicians to interpret medical images for diagnostic decision-making; provides high-resolution visualization to aid patient diagnosis.
Clinical Evidence
No clinical data. Substantial equivalence is based on bench testing and technical comparison of display performance characteristics (brightness, contrast, response time, uniformity).
Technological Characteristics
54cm (21.2") TFT Color LCD panel; 2048 x 1536 native resolution; 900 cd/m2 brightness; 1000:1 contrast ratio; 20ms response time. Connectivity via DVI-D. Includes Digital Uniformity Equalizer (DUE) for luminance compensation. Optional photo-sensor and calibration software. Complies with EN60601-1, UL60601-1, CSA C22.2 No. 601-1, FCC-B, VCCI-B.
Indications for Use
Indicated for trained medical practitioners to display and view digital images for diagnosis of X-ray or MRI. Contraindicated for the display of mammography images for diagnosis.
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).
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16090045
# 510(k) Summarv as required by 807.92
# 1. Company Identification
EIZO NANAO CORPORATION 153 Shimokashiwano-cho. Hakusan-shi. Ishikawa-ken. 924-8566. Japan Tel: +81-76-274-2468 Fax: +81-76-274-2484
JAN 2 8 2009
- 2. Official Correspondent Hiroaki Hashimoto (Mr.) Manager of Product Safety
3. Date of Submission January 6, 2009
4. Device Trade name Color LCD Monitor, RadiForce RX320
### 5. Common/Usual Name
Image display system, medical image workstation, image monitor/display, and others
### 6. Classification Number
Medical displays classified in Class II per 21 CFR 892.2050.
### 7. Predicate Device
Manufacturer : EIZO NANAO CORPORATION Device Name : Color LCD Monitor Model Name : RadiForce R31 and R31-C 510(k) No. : K052344
### 8. Description of Device
RadiForce RX320 is a 54cm (21.2") Color LCD display for medical image viewing. RX320 displays high-definition medical imaging.
### 9. Intended Use
RadiForce RX320 is intended to be used in displaying and viewing digital images for diagnosis of X-ray or MRI, etc. by trained medical practitioners. RadiForce RX320 does not support the display of mammography images for diagnosis.
### 10. Technological Characteristics
RadiForce RX320 is substantially equivalent to R31 and R31-C (K052344). Additional product innovations include Digital Uniformity Equalizer (DUE), which enables compensates for luminance non-uniformity. RX320 improved the brightness and contrast of the LCD module, and modified the calibration software. The brightness improved in 900 cd/m2 from 400 cd/m2. The contrast improved by it.
Comparison table of the principal characteristics of 2 devices is shown in the Attachment 1.
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# Appendix 1: Comparison Table with Predicate Device
| Items | R31 | R31-C | RX320 |
|---------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------|----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510(k) Number | K052344 | | Not Provided |
| Panel Protector | Not provided | Provided | Optional |
| Panel Size and<br>Type | 53 cm (20.8") TFT Color LCD panel | | 54cm (21.2") TFT Color<br>LCD panel |
| Pixel Pitch | 0.207 x 0.207mm | | 0.21075 x 0.21075 mm |
| Cabinet Color | Black | | Same as R31 and R31-C |
| Display Colors | 10-bit: 1.06 billion (maximum)<br>8-bit: 16.77 million from a palette of 1.06<br>billion | | Same as R31 and R31-C |
| Viewing Angles | H: 170°, V: 170° | | Same as R31 and R31-C |
| Scanning<br>Frequency<br>(H, V) | 31-127kHz, 59-61Hz<br>(VGA Text: 69-71Hz,<br>QXGA: 36-61Hz)<br>Frame synchronous mode: 59-61Hz | | 31-127kHz, 29-61Hz<br>(VGA Text: 69-71Hz)<br>Frame synchronous mode:<br>59-61Hz |
| Native Resolutions | 2048 x 1536 (portrait)<br>/1536 x 2048 (landscape) | | Same as R31 and R31-C |
| Brightness | 400 cd/m² | | 900 cd/m² |
| Contrast Ratio | 400 : 1 (typical) | | 1000 : 1 (typical) |
| DOT Clock | 215 MHz | | Same as R31 and R31-C |
| Response Time | 50 ms (typical) | | 20 ms (typical) |
| Active Display Size<br>(H x V) | 318 x 424 mm | | 323.7 x 431.6 mm |
| Viewable Image<br>Size | Diagonal: 529 mm | | Diagonal: 540 mm |
| Luminance<br>Calibration | Software (Optional)<br>Photo-sensor (Optional) | | Software (Optional)<br>Photo-sensor (Optional)<br>Digital Uniformity<br>Equalizer |
| Input Signals | DVI Standard 1.0 | | Same as R31 and R31-C |
| Input Terminals | DVI-D 24 pin | | Same as R31 and R31-C |
| USB Ports /<br>Standard | 1 upstream, 2 downstream | | Same as R31 and R31-C |
| Power | AC100-120V, 200-240V, 50/60Hz | | Same as R31 and R31-C |
| Power<br>Management | DVI-DMPM | | Same as R31 and R31-C |
| Dimensions<br>(W x H x D) | With Stand:<br>368 x 515.5 mm<br>- 597.5 x 209 mm<br>Without Stand:<br>368 x 486 x 88.5 mm | | Same as R31 and R31-C |
| Certifications &<br>Standards | TUV/GM, CE Medical Device Directive, CB<br>(EN60601-1), cTUVus (UL2601-1, CSA<br>C22.2 No. 601-1), VCCI-B, FCC-B,<br>Canadian ICES-003-A, CCC | | CE (Medical Device<br>Directive), TUV/GM<br>(EN60601-1), cTUVus (UL<br>60601-1, CSA C22.2 No.<br>601-1), CB(IEC60601-1),<br>VCCI-B, FCC-B, Canadian<br>ICES-003-B, c-Tick, RoHs |
*The software used in RX320 is modified, refer to the "12. Information of Software used in RX320".
i : :
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# DEPARTMENT OF HEALTH & HUMAN SERVICES
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 graphic of an eagle or bird-like figure with three curved lines representing its body and wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the graphic.
#### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Mr. Hiroaki Hashimoto Manager of Product Safety EIZO NANAO CORPORATION 153 Shimokashiwano-cho Hakusan, Ishikawa-ken 924-8566 JAPAN
# JAN 2 8 2009
Re: K090045
Trade/Device Name: Color LCD Monitor, (RadiForce RX320) Regulation Number: 21 CFR 892,2050 Regulation Name: Picture archiving and communications system Regulatory Class: II Product Code: LLZ Dated: January 6, 2009 Received: January 7, 2009
## Dear Mr. Hashimoto:
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 such 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.
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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 80); 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.
This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding os 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 this letter.
| 21 CFR 876.xxx | (Gastroenterology/Renal/Urology) | (240) 276-011 |
|----------------|----------------------------------|---------------|
| 21 CFR 884.xxx | (Obstetrics/Gynecology) | (240) 276-011 |
| 21 CFR 892.xxx | (Radiology) | (240) 276-012 |
| Other | | (240) 276-010 |
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding postmarket surveillance, please contact CDRH's Office of Surveillance and Biometrics' (OSB's) Division of Postmarket Surveillance at 240-276-3474. For questions regarding the reporting of device adverse events (Medical Device Reporting (MDR)), please contact the Division of Surveillance Systems at 240-276-3464. You may obtain other general information on your responsibilities under the Act from the Division of Small Manufactures, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry.suppor/index.html.
Sincerely yours.
Janine M. Morris
Acting Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number:
K090045
Color LCD Monitor, RadiForce RX320 Device Name :
Indications for Use:
RadiForce RX320 is intended to be used in displaying and viewing digital images for diagnosis of X-ray or MRI, etc. by trained medical practitioners. RadiForce RX320 does not support the display of mammography images for diagnosis.
Prescription Use X (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)
Tom M. Whay
(Division Sign-Off) Division of Reproductive, Abdominal a Radiological Devices 510(k) Number
5-1
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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.