The RAYPAX System is intended for the storage, reading, diagnostic review, analysis, annotation, distribution, printing, editing, and processing of digital images acquired from devices such as Computed Tomography (CT), Magnetic Resonance (MR), Computed Radiography (CR), Digital X-Ray (DX), Digital Mammography (MG), Ultrasound (US), Nuclear Medicine (NM), Positron Emission Tomography (PET), X-Ray Angiography (XA), Film Scanners, and any other DICOM supporting devices. The clients of RAYPAX System are intended for diagnostic and analysis tool by trained healthcare professionals, including radiologists, physicians, technologists, clinicians and nurses. QCW(Quality control Workstation) is intended for technicians to verify exams. DW(Diagnostic Workstation) and RW(Review Workstation) is intended for radiologists to perform a diagnostic analysis of the exams and WCC(Web Client Component) is intended for the clinical review of physicians. Net Point and Lite are intended to acquire exams from remote facilities through the Internet. Net, Exp and Web client versions are intended for a remote access to the images through the Internet. For the digital mammography images, to be viewed for primary interpretation, images must be acquired from an FDA approved Mammography device for primary interpretation and viewed on a display system with at least 5 Mega Pixel of resolution and has been cleared by the FDA for diagnosis of digital mammography images. Furthermore, the Mammography device must be able to provide, to the RAYPAX System, a viewable DICOM 'for presentation' mammography image. Images that are printed to film must be printed using a FDA approved printer for the diagnosis of digital mammography images.
Device Story
RAYPAX System is a PACS package for receiving, storing, and distributing medical images/reports across multi-facility environments. Inputs include DICOM images from modalities (CT, MR, CR, DX, MG, US, NM, PET, XA) and HL7 data for patient demographics/orders. System comprises a central server, gateways (DICOM/HL7), and various client workstations (QCW, DW, RW, WCC). Operates via LAN or Internet (with SSL encryption). Healthcare professionals use workstations to verify, analyze, and report on exams. Output is visual diagnostic data and reports. Facilitates clinical decision-making by providing centralized, remote access to patient imaging history. Benefits include improved workflow efficiency and diagnostic accessibility for clinicians.
Clinical Evidence
No clinical data provided. Bench testing only.
Technological Characteristics
Standalone software package; Microsoft-based platform (C#, C++, ASP, .NET framework). DICOM 3.0 and HL7 compliant. Connectivity via LAN/Internet. No patient contact; does not control life-sustaining equipment. Display manipulations/annotations stored as presentation parameters; original images remain unaltered.
Indications for Use
Indicated for storage, review, analysis, and distribution of DICOM medical images by trained healthcare professionals (radiologists, physicians, technologists, clinicians, nurses) in clinical settings. Includes remote access capabilities. Digital mammography requires FDA-cleared acquisition devices, 5MP resolution displays, and 'for presentation' DICOM images.
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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Image /page/0/Picture/0 description: The image shows the logo for RAYPAX. The logo has a large letter R on the left side, followed by the letters AYPAX. Below the letters AYPAX is the text "medical image center" in a smaller font.
www.raypax.com
Ko8 19 Traditional 510(K)
# 1. 510(k) Summary
## SEP 1 9 2008
#### 510(K) Owner Information (807 92(a)(1)) 1.1
| Summary Preparation Date: | April 2, 2008 |
|---------------------------|---------------------------------------------------------------------------------------------------------------------------------------------|
| Company Identification: | RAYPAX Inc.<br>14251 E. Firestone Blvd<br>La Mirada, CA 90638 |
| Contact Person: | Chris Chung<br>14251 E. Firestone Blvd<br>La Mirada, CA 90638<br>Phone: (562) 921-8640<br>Fax: (626) 270-4099<br>Email: chris@raypaxusa.com |
## 1.2 Device Identification (807 92(a)(2))
| Device Trade Name: RAYPAX System |
|-----------------------------------------------------------------------|
| Common/Usual Name: Picture Archiving and Communications System (PACS) |
| Classification Names: System, Image Processing, Radiological |
| Regulation Medical Specialty: Radiology |
| Product Code: LLZ |
| Regulation Number: 892.2050 |
| Device Class: 2 |
#### 1.3 Predicative Device Information (807 92(a)(3))
| 510(k) Number | K043415 |
|-----------------------------------|---------------------------------------------|
| Device Name | CENTRICITY PACS SYSTEM |
| Applicant | MEDICAL SYSTEMS INFORMATION<br>TECHNOLOGIES |
| Regulation Number | 892.2050 |
| Classification Product Code | LLZ |
| Date Received | 12/13/2004 |
| Decision Date | 01/21/2005 |
| Decision | Substantially equivalent (SE) |
| Classification Advisory Committee | Radiology |
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Image /page/1/Picture/2 description: The image contains a logo for "RAYPAX". The logo is in black and white and features a stylized letter "R" followed by the letters "AYPAX" in a smaller font. Below the letters "AYPAX" is a tagline in an even smaller font, which is difficult to read due to its size and resolution. The overall design is simple and modern.
## 1.4 Device Description (807 92(a)(4))
The RAYPAX System is a complete PACS package to receive medical images from medical modalities, and distribute medical images and reports to enable medical staff to verify, diagnosis, and refer them in multi medical facilities. It consists of RAYPAX PACS server, Getaways and Clients.
### 1.4.1 RAYPAX PACS Server
RAYPAX PACS server stores the images and information obtained from the medical equipments and other systems, and provides a connection for RAYPAX client to access the information depending on their previledge level. Remote access through the Internet is allowed, and to ensure a secure data transfer, strong data encryption(SSL) is provided. All DICOM images acquired in the RAYPAX System are stored unaltered and all display manipulations and annotations are stored as presentation parameters and they do not alter the original image file.
### 1.4.2 RAYPAX Gateways
RAYPAX Gateways communicate with medical modalities and other systems to receive and share image data, patient demographics, order schedule and study results. DICOM Gateway gathers medical exams from modalities and other system in DICOM format. Remote exams are gathered by Net Point or Lite locally and sent to PACS server through the internet. HL7 Gateway exchanges the patient and order information, study results with other information system in HL7 standard.
#### 1.4.3 RAYPAX Clients
The clients of RAYPAX System are intended for diagnostic and analysis by trained healthcare professionals, including radiologists, physicians, technologists, clinicians and nurses. RAYPAX Clients connect the PACS server and enables medical staff to view medical data and assign special tasks in the PACS workflow.
OCW is a verification tool for a technician to reconstruct, verify exams. DW (Diagnostic Workstation) and RW (Review Workstation) are for the radiologist to perform diagnostic analysis of the exams. TW (Transcription Workstation) is a tool for the trancriptionist to create a preliminary report. WCC (Web Client Component) is a radiology referring tool for a physican to refer exam and report viewing at remote site. Net, Exp and Web versions of RAYPAX clients are intended to offer a remote access to the images through the Internet.
For PACS administrators, Admin provides with user management, server parameter setting, and Net Monitor provides the status of the PACS system and the performance of the medical organization.
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Image /page/2/Picture/2 description: The image shows the logo for RAYPAX. The logo has a large, stylized letter "R" on the left, followed by the letters "AYPAX" in a smaller, sans-serif font. Below the letters "AYPAX" is the text "makes medical images online" in a smaller font. The logo is black and white.
#### 1.5 Intended Use (807.92(a)(5))
#### 510(k) Number (if known): Device Name: RAYPAX System
The RAYPAX System is intended for the storage, reading, diagnostic review, analysis, annotation, distribution, printing, editing, and processing of digital images acquired from devices such as Computed Tomography (CT), Magnetic Resonance (MR), Computed Radiography (CR), Digital X-Ray (DX), Digital Mammography (MG), Ultrasound (US), Nuclear Medicine (NM), Positron Emission Tomography (PET), X-Ray Angiography (XA), Film Scanners, and any other DICOM supporting devices.
The clients of RAYPAX System are intended for diagnostic and analysis tool by trained healthcare professionals, including radiologists, physicians, technologists, clinicians and nurses. OCW (Quality control Workstation) is intended to verify exams, DW (Diagnostic Workstation) and RW (Review Workstation) is intended for radiologists to diagnostic analyze exams and WCC (Web Client Component) is intended for clinical review of physicians. Net Point and Lite are intended to acquire exams from local modalities and send the exams to the PACS server through the Internet. Net, Exp and Web versions of RAYPAX clients are intended to offer a remote access to the images through the Internet.
For the digital mammography images, to be viewed for primary interpretation, images must be acquired from an FDA approved Mammography device for primary interpretation and viewed on a display system with at least 5 Mega Pixel of resolution and has been cleared by the FDA for diagnosis of digital mammography images. Furthermore, the Mammography device must be able to provide, to the RAYPAX System, a viewable DICOM 'for presentation' mammography image. Images that are printed to film must be printed using a FDA approved printer for the diagnosis of digital mammography images.
### 1.6 Technological Characteristics (807.92(a)(6))
RAYPAX System is a standalone software package based on standard Microsoft technology, general purpose software and hardware platform. As a development tools, industry standard programming languages (C#, C++, and ASP) and the Microsoft Visual Studio are used. To create remote applications, web protocols and Microsoft Dot NET framework are used.
RAYPAX System is a DICOM 3.0 compliant system to receive images from medical device, and supports HL7 (Health Level Seven) to communicate with other information system. The system only uses IP address on LAN (Local Area Network) environment to communicate with medical device, and it has no contact with patient, nor does it control any life sustaining device.
All display manipulations and annotations in RAYPAX clients are stored as presentation parameters not to alter the original image file, so all DICOM images acquired in the RAYPAX System are stored and unaltered.
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Image /page/3/Picture/2 description: The image shows the logo for Raypax, a medical imaging solutions company. The logo features a stylized letter "R" in bold, followed by the text "AYPAX" in a smaller, sans-serif font. Below the company name is the tagline "Next in Medical Imaging Solutions."
#### Substantial Equivalence Discussion (807.92(b)(1)) 1.7
The predicative device and the RAYPAX System present similar indication for use statements. The Centricity PACS and RAYPAX System are Picture Archiving and Communication System. They are used to manage medical images and data, images are acquired from devices through the DICOM standard, and both systems are used by trained healthcare professionals for diagnosis.
Both the predicative device and the RAYPAX system employs a database, an image storage, HL-7 interfacing and DICOM services. Images are acquired into the system from DICOM supporting devices. So, the predicative device and the RAYPAX System have no contact with the patient, nor does it control any life sustaining device. A physician, providing ample opportunity for competent human intervention interprets images and information being printed.
The RAYPAX System is as safe, as effective, and performs as well as the predicate devices. Any differences between the RA YPAX system and the substantially equivalent system have no significant influence on safety and effectiveness.
## 1.8 Conclusion 807.92(b)(3)
We believe that The 510(k) Pre-Market Notification for RAYPAX System contains adequate information and data to enable FDA - CDRH to determine substantial equivalence to the predicate device. RAYPAX System has been and will be manufactured in accordance with the mandatory and voluntary standards listed in this submission. The submission contains the result of the hazard analysis that there is no software component in the RA YPAX System that we know of whose failure or design flaw would result in death of injury to a patient, and the "Level of Concern" of the RAYPAX System is "minor".
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Image /page/4/Picture/1 description: The image shows the logo for the Department of Health & Human Services (USA). The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES (USA)" arranged around the perimeter. Inside the circle is a stylized graphic of an abstract human figure with three lines extending upwards, resembling a person embracing the world.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
# SEP 1 9 2008
Mr. Chris Chung Engineer RAYPAX, Inc. 14251 E. Firestone Blvd. LA MIRADA CA 90638
Re: K081948
Trade/Device Name: RAYPAX System Regulation Number: 21 CFR 892.2050 Regulation Name: Picture archiving and communications system Regulatory Class: II Product Code: LLZ Dated: June 27, 2008 Received: July 8, 2008
Dear Mr. Chung:
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 10 abounded in the 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, the refore, 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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#### Page 2
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.
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 this letter:
| 21 CFR 876.xxx | (Gastroenterology/Renal/Urology) | 240-276-0115 |
|----------------|----------------------------------|--------------|
| 21 CFR 884.xxx | (Obstetrics/Gynecology) | 240-276-0115 |
| 21 CFR 894.xxx | (Radiology) | 240-276-0120 |
| Other | | 240-276-0100 |
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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 Manufacturers, 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/support/index.html.
Sincerely vours.
forque M. Whang
Joyce M. Whang, Ph.D. Acting Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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RAYPAX
*makes medical images accessible*
Indications for Use Statement
510(k) Number: K081948
Device Name: RAYPAX System
Indications for Use:
The RAYPAX System is intended for the storage, reading, diagnostic review, analysis, annotation, distribution, printing, editing, and processing of digital images acquired from devices such as Computed Tomography (CT), Magnetic Resonance (MR), Computed Radiography (CR), Digital X-Ray (DX), Digital Mammography (MG), Ultrasound (US), Nuclear Medicine (NM), Positron Emission Tomography (PET), X-Ray Angiography (XA), Film Scanners, and any other DICOM supporting devices.
The clients of RAYPAX System are intended for diagnostic and analysis tool by trained healthcare professionals, including radiologists, physicians, technologists, clinicians and nurses. QCW(Quality control Workstation) is intended for technicians to verify exams. DW(Diagnostic Workstation) and RW(Review Workstation) is intended for radiologists to perform a diagnostic analysis of the exams and WCC(Web Client Component) is intended for the clinical review of physicians. Net Point and Lite are intended to acquire exams from remote facilities through the Internet. Net, Exp and Web client versions are intended for a remote access to the images through the Internet.
For the digital mammography images, to be viewed for primary interpretation, images must be acquired from an FDA approved Mammography device for primary interpretation and viewed on a display system with at least 5 Mega Pixel of resolution and has been cleared by the FDA for diagnosis of digital mammography images. Furthermore, the Mammography device must be able to provide, to the RAYPAX System, a viewable DICOM 'for presentation' mammography image. Images that are printed to film must be printed using a FDA approved printer for the diagnosis of digital mammography images.
Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE)
AND/OR
Julius Remus
h Sign-Off Division of Reproductive, Abdominal, and Radiological Devices 510(k) Number
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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.