AXIOM ARISTOS FX (MULTI PURPOSE RADIOGRAPHY SYSTEM)
K013826 · Siemens Medical Systems, Inc. · KPR · Feb 1, 2002 · Radiology
Device Facts
Record ID
K013826
Device Name
AXIOM ARISTOS FX (MULTI PURPOSE RADIOGRAPHY SYSTEM)
Applicant
Siemens Medical Systems, Inc.
Product Code
KPR · Radiology
Decision Date
Feb 1, 2002
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1680
Device Class
Class 2
Indications for Use
MPRS is a dedicated x-ray system with a flat panel detector which allows the acquisition of x-ray exposures without the use of conventional film/screen systems. The MPRS allows radiographic exposures of the whole body including skull, spinal column, chest, abdomen, extremities, and excluding mammography. Radiographic exposures may be taken with the patient in the sitting, standing, or supine positions. The intended use and indications for use of this modified device as described in its labeling have not changed from its predicate device.
Device Story
AXIOM Aristos FX (MPRS) is a multipurpose radiography system featuring two ceiling-mounted telescoping arms: one for the X-ray tube/collimator and one for a flat-panel detector (FD). The FD replaces conventional film/cassette systems. The system includes a modified patient table based on the Siemens Koordinat M. Used in clinical settings by trained healthcare professionals to perform whole-body radiographic examinations. The system captures X-ray exposures, which are processed and displayed for clinical review. The output assists physicians in diagnostic decision-making by providing digital radiographic images. Benefits include the elimination of film/screen processing and improved workflow efficiency.
Clinical Evidence
Bench testing only. No clinical data provided. Safety and effectiveness are supported by adherence to industry practices and final performance testing of the equipment.
Technological Characteristics
Stationary X-ray system with flat-panel detector. Components include X-ray generator, tube, collimator, and FD detector. Ceiling-mounted telescoping arm configuration. Modified Koordinat M patient table. Operates as a digital radiography system replacing film/screen. Class II device.
Indications for Use
Indicated for radiographic imaging of the whole body, including skull, spinal column, chest, abdomen, and extremities; excludes mammography. Suitable for patients in sitting, standing, or supine positions. Prescription use only.
Regulatory Classification
Identification
A stationary x-ray system is a permanently installed diagnostic system intended to generate and control x-rays for examination of various anatomical regions. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
Special Controls
*Classification.* Class II (special controls). A radiographic contrast tray or radiology diagnostic kit intended for use with a stationary x-ray system only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.
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# FEB 0 1 2002
1
# 510(K) SUMMARY
Submitted by: Siemens Medical Systems, Inc. 186 Wood Avenue South Iselin, NJ 08830
Koi3826
### August 02, 2001
This 510(k) summary of safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR § 807.92.
| 1. | <b>Contact Person</b><br>Ms. Sandra Robinson<br>Phone: (732) 321-3243 Fax: (732) 321-484 |
|----|------------------------------------------------------------------------------------------|
|----|------------------------------------------------------------------------------------------|
#### Device Name and Classification 2.
| Trade Name: | AXIOM Aristos FX (Multipurpose Radiography System) |
|-----------------------|----------------------------------------------------|
| Internal name of R&D: | MPRS (Multipurpose Radiography System) |
| Classification Name: | Solid State x-ray Imager |
| Classification Panel: | Radiology |
| CFR Section: | 21 CFR § 892.1680 |
| | |
| Device Class: | Class II |
| Device Code: | 90MQB |
#### 3. Intended Use
MPRS is a dedicated x-ray system with a flat panel detector which allows the acquisition of x-ray exposures without the use of conventional film/screen systems. The MPRS allows radiographic exposures of the whole body including skull, spinal column, chest, abdomen, extremities, and excluding mammography. Radiographic exposures may be taken with the patient in the sitting, standing, or supine positions. The intended use and indications for use of this modified device as described in its labeling have not changed from its predicate device.
#### 4. Substantial Equivalence
The MPRS stationary x-ray system is a modified version of the current, commercially available SIEMENS Medical Systems:
| Thorax FD | K983732, cleared on 4/21/99 |
|----------------------------------------------------------------------------------|-----------------------------|
| Multix FD | K983732, cleared on 4/21/99 |
| The table is a modified version of the Koordinat M , K951176, cleared on 3/16/95 | |
Information that substantiates this claim of equivalence is provided throughout this 510(k) submission and specific equivalence information is provided in Attachment 1.
#### ಸ. Device Description
The MPRS Multipurpose Radiography System is designed as a set of two ceiling mounted telescoping arms. One arm is supplying the x-ray tube with the collimator, the other arm is supplying the FD (Flat panel detector), which replaces the conventional film/cassette system. A modified patient table is provided, which is based on the Siemens Koordinat M Radiographic X-ray table. Radiographic exposures may be taken with the patient in the sitting, standing, or supine positions.
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- Summary of Technological Characteristics of the Principal Device as Compared with the Predicate 6. Device
Many of the components (Generator, X-ray tube, Imaging system, Collimator, FD detector) used in MPRS Multipurpose Radiography System are either commercially available with current Siemens systems or include minor modifications to existing components.
- General Safety and Effectiveness Concerns 7.
Instructions for use are included within the device labeling and the information provided will enable the trained healthcare professional to operate the device in a safe and efficacious manner. Furthermore the operators are health care professionals familiar with and responsible for the X-ray examinations to be performed. To minimize electrical, mechanical and radiation hazards, Siemens adheres to recognized and established industry practice, and all equipment is subject to final performance testing.
#### Substantial Equivalence 8.
In the opinion of Siemens Medical Systems, Inc., the hardware and software documentation and the substantial equivalence comparison matrix proves that the MPRS Multipurpose Radiography System is substantially equivalent to the Siemens Medical Systems, Inc. predicate Radiography systems - Thorax FD, and Multix FD.
Kathleen Rutherford
Kathleen Rutherford Manager, Regulatory Submissions Siemens Medical Systems, Inc.
8/8/01
Date
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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 is circular and contains the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is a stylized image of an eagle with three curved lines representing its wings.
### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
FEB 01 2002
Ms. Sandra Robinson Technical Specialist, Regulatory Submissions Siemens Medical Systems, Inc. 186 Wood Avenue South ISELIN NJ 08830
# Re: K013826
Trade/Device Name: AXIOM Aristos FX Regulation Number: 21 CFR 892.1630 Regulation Name: Electrostatic x-ray imaging system Product Code: 90 MQB Regulation Number: 21 CFR 892.1680 Regulation Name: Stationary x-ray system Product Code: 90 KPR Regulatory Class: II Dated: August 6, 2001 Received: November 19, 2001
Dear Ms. Robinson:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (sections 531-542 of the Act); 21 CFR 1000-1050.
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This letter will allow you to begin marketing your device as described in your 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:
| 8xx.1xxx | (301) 594-4591 |
|----------------------------------|----------------|
| 876.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4616 |
| 884.2xxx, 3xxx, 4xxx, 5xxx, 6xxx | (301) 594-4616 |
| 892.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4654 |
| Other | (301) 594-4692 |
Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html.
Sincerely yours,
Nancy C. Brogdon
Nancy C. Brogdon Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### INDICATIONS FOR USE
| 510(k) Number (if known): | K013826 |
|---------------------------|--------------------------------------------------------|
| Device Name: | (MPRS Multi Purpose Radiology System) AXIOM ARISTOS FX |
### Indications for Use:
MPRS is a dedicated x-ray system with a flat panel detector, which allows the acquisition of x-ray exposures without MIFKS IS a dedicated x-ay systems. The MPRS allows radiographic exposures of the whole body including the use of conventional initissees. Systems. The , excluding mammography. Radiographic exposures may be taken skull, Spillal colum, citist, abouncil, or supine positions. The intended use and indications for use of this modified device as described in its labeling have not changed from its predicate device.
| Concurrence of the CDRH, Office of Device Evaluation (ODE) |
|------------------------------------------------------------|
|------------------------------------------------------------|
Prescription Use
(per 21 CFR 801.109)
Over-The-Counter Use _
David G. Larson
OR
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.