The TOPAZ Mobile DR System, is a mobile X-ray imaging system, for the purpose of acquiring X-ray images of the desired parts of a patient's anatomy. This device is not intended for mammography, bone density, fluoroscopy and angiography applications.
Device Story
Mobile X-ray system (32kW or 40kW models) used for diagnostic imaging; includes tube assembly, motorized collimator, HV cable, and high-frequency generator. Operated by healthcare professionals in clinical settings. System uses motorized drive for positioning. X-ray source emits radiation through patient anatomy; digital detector captures signal; workstation performs amplification and digital conversion. Output is DICOM image for review on device or PACS. Imaging software allows automatic exposure technique selection based on anatomical study. Features include ROI, flip, rotate, inverse, annotation, measurement, zoom, and pan tools. Benefits include efficient, mobile diagnostic imaging capability.
Clinical Evidence
Bench testing only. No clinical data provided. System validation testing evaluated all input/output functions and performance against predetermined acceptance criteria. Compliance with recognized standards (IEC 60601 series, ISO 14971, DICOM, etc.) was demonstrated.
Indicated for acquiring X-ray images of patient anatomy. Not for mammography, bone density, fluoroscopy, or angiography.
Regulatory Classification
Identification
A mobile x-ray system is a transportable device system intended to be used to generate and control x-ray for diagnostic procedures. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
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May 19, 2020
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DRGEM Corporation % Mr. Carl Alletto Consultant OTech, Inc. 8317 Belew Drive MCKINNEY TX 75071
Re: K201124
Trade/Device Name: TOPAZ Mobile DR System Regulation Number: 21 CFR 892.1720 Regulation Name: Mobile x-ray system Regulatory Class: Class II Product Code: IZL Dated: April 24, 2020 Received: April 27, 2020
Dear Mr. Alletto:
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 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
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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 mediation-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
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# Indications for Use
510(k) Number (if known) K201124
Device Name TOPAZ Mobile DR System
#### Indications for Use (Describe)
The TOPAZ Mobile DR System, is a mobile X-ray imaging system, for the purpose of acquiring X-ray images of the desired parts of a patient's anatomy.
This device is not intended for mammography, bone density, fluoroscopy and angiography applications.
| Type of Use (Select one or both, as applicable) | |
|----------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------|
| <span style="font-size: 16px;"> <input checked="true" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D) </span> | <span style="font-size: 16px;"> <input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C) </span> |
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## 510(k) Summary of Safety K201124
This 510(k) Summary of safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990.
Date Prepared: May 14, 2020
#### I. SUBMITTER
DRGEM Corporation 7F E-B/D Gwangmyeong Techno-Park 60, Haan-ro, Gwangmyeong-si, Gyeonggi-do, 14322 Korea Email: radcheck@drgem.co.kr
Contact Person: Mr. Ki-Nam YANG, Director | QM representative
#### II. DEVICE
| Name of Device: | TOPAZ Mobile DR System |
|-----------------------|------------------------|
| Common or Usual Name: | Mobile x-ray system |
| Regulation Name: | Mobile x-ray system |
| Regulation: | 21 CFR 892.1720 |
| Product Code: | IZL |
| Regulatory Class: | II |
#### III. PREDICATE DEVICE
The TOPAZ Mobile DR System device is substantially equivalent to:
| Device Classification Name | Mobile X-Ray System |
|------------------------------|-----------------------------------------------------------------------------------------------|
| 510(K) Number | K183292 |
| Device Name | Topaz Mobile DR System |
| Applicant | DRGEM Corporation<br>7F E-B/D Gwangmyeong Techno-Park 60, Haan-Ro<br>Gwangmyeong-Si, KR 14322 |
| Regulation Number | 892.1720 |
| Classification Product Code | IZL |
| Decision Date | 05/15/2019 |
| Regulation Medical Specialty | Radiology |
### IV. DEVICE DESCRIPTION
The TOPAZ Mobile DR System, (TOPAZ), is a mobile x-ray system and is a modification of the predicate device. There are 2 models for TOPAZ: TOPAZ-32D (32KW) and TOPAZ-40D (40KW). TOPAZ, may be moved quietly and smoothly with a motor drive mechanism.
The core part of x-ray source is a tube assembly, motorized x-ray collimator, HV cable assembly and high frequency x-ray generator. A touch screen LCD based x-ray control console provides a user-friendly interface and technique selection. The Collimator supports high accuracy for selected x-ray field size over any SID. Selection of an anatomical study on the imaging software automatically sets up the x-ray generator's pre-programmed exposure technique.
The X-ray passing through a patient's body is sent to the detector and then converted into electrical signals. These signals go through the process of amplification and digital data conversion in the signal process on the workstation and saved in a DICOM file for review on the device or on a Picture Archiving & Communication System (PACS) workstation. The digital detector type used in the predicate TOPAZ is "VARIAN PacScan4336W" or "VARIAN
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# 510(k) Summary of Safety
PacScan4336W V4 which was cleared as part of the Nexus DR™ Digital X-ray Imaging System (with PaxScan 4336Wv4). K161459. The modified device can use five additional digital detectors which also have been previously cleared by 510(k): XRpad2 3025 HWC -K161942, XRpad2 4336 HWC - K161966, XRpad2 4343 HWC - K181526, Mano4343W -K183713, and Mano4336W - K182551.
The TOPAZ Workstation Image Management features and functions are as follows in both the predicate and modified device:
- . ROI: Default 13 ROI support
- MARK: Unlimited support (User preset support) ●
- . Horizontal Flip
- Vertical Flip .
- Rotate Clockwise (CW) ●
- Rotate Counter Clockwise (CCW) ●
- . Inverse (Black or White)
- . Text Annotation
- Caliper / Ruler: Distance tool ●
- . Angle: Angle measurement tool
- . Zoom: Image zoom in/out
- . Maqnify: Image magnify glass window
- . Pan: Image panning
#### V. INDICATIONS FOR USE
The TOPAZ Mobile DR System, is a mobile X-ray imaging system, for the purpose of acquiring X-ray images of the desired parts of a patient's anatomy. This device is not intended for mammography, bone density, fluoroscopy and angiography applications.
#### VI. COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE DEVICES
TOPAZ Mobile DR System is a mobile x-ray system.
Summary of differences:
The difference between the predicate device and the modified device is the addition of five previously cleared x-ray detectors to the TOPAZ system. The added detectors are:
- . XRpad2 3025 HWC - 510(k) number K161942
- XRpad2 4336 HWC 510(k) number K161966 .
- . XRpad2 4343 HWC – 510(k) number K181526
- Mano4343W – 510(k) number K183713
- . Mano4336W – 510(k) number K182551
### VII. PERFORMANCE DATA
Nonclinical Testing:
The complete system has been assessed and tested at the factory and by Standards testing facilities. The TOPAZ Mobile DR System has passed all predetermined testing criteria. The Validation Test Plan was designed to evaluate all input functions, output functions, and actions performed by TOPAZ, and followed the process documented in the System Validation Test Plan.
Nonclinical testing results are provided in the 510(k). Validation testing indicated that as required by the risk analysis, designated individuals performed all verification and validation activities and that the results demonstrated that the predetermined acceptance criteria were met.
The following Standards were used to test the system and TOPAZ Mobile DR System, has met all the requirements listed in the Standards except for inapplicable requirements (which are listed in the various test reports):
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- IEC 60601-2-54 Ed. 1.0:2009, Medical electrical equipment Part 2-54: Particular requirements o for the basic safety and essential performance of X-ray equipment for radiography and radioscopy (including Technical Corrigendum 1: 2010 and Technical Corrigendum 2:2011) FDA Recognized Standard #12-296.
- ANSI AAMI ES60601-1:2005/(R)2012 and A1:2012, C1:2009/(R)2012 and A2:2010/(R)2012 O (Consolidated Text) Medical electrical equipment - Part 1: General requirements for basic safety and essential performance (IEC 60601-1:2005, MOD). FDA Recognized Standard #19-4.
- o IEC 60601-1-6 Edition 3.1 2013-10, Medical electrical equipment - Part 1-6: General requirements for basic safety and essential performance - Collateral standard: Usability. FDA Recognized Standard #5-89.
- IEC 60601-1-3 Edition 2.1 2013-04, Medical electrical equipment Part 1-3: General o requirements for basic safety and essential performance - Collateral Standard: Radiation protection in diagnostic X-ray equipment. FDA Recognized Standard #12-269.
- IEC 60601-2-28 Edition 2.0 2010-03. Medical electrical equipment Part 2-28: Particular O requirements for the basic safety and essential performance of X-ray tube assemblies for medical diagnosis. Recognized Standard #12-204.
- ANSI AAMI IEC 62304:2006. Medical device software Software life cvcle processes. FDA o Recognized Standard #13-32.
- IEC 60601-1-2 Edition 4.0 2014-02. Medical electrical equipment Part 1-2: General O requirements for basic safety and essential performance - Collateral Standard: Electromagnetic disturbances Requirements and tests. FDA Recognized Standard #19-8.
- o NEMA PS 3.1 - 3.20 (2016). Digital Imaging and Communications in Medicine (DICOM) Set DICOM Standard. FDA Recognized Standard #12-300.
- JPEG Standard IEC/ISO10918-1 First edition 1994-02-15, Information technology Digital O compression and coding of continuous-tone still images: Requirements and guidelines [Including: Technical Corrigendum 1 (2005)]. FDA Recognized Standard #12-261.
- IEC 62494-1 Edition 1.0 (2008-08). Medical electrical equipment Exposure index of digital Xo ray imaging systems - Part 1: Definitions and requirements for general radiography. FDA Recognized Standard #12-215.
- ANSI AAMI ISO 14971:2007/(R)2010 (Corrected 4 October 2007), Medical devices o Applications of risk management to medical devices. FDA Recognized Standard #05-40.
- ISO 15223-1 Third Edition 2016-11-01, Medical devices Symbols to be used with medical O device labels, labelling, and information to be supplied - Part 1: General requirements. FDA Recognized Standard #05-117.
Conclusion: 21 CFR 807 92(b)(1)
The 510(k) Pre-Market Notification for the TOPAZ Mobile DR System, contains adequate information, data, and nonclinical test results to enable FDA - CDRH to determine substantial equivalence to the predicate device.
The subject device will be manufactured in accordance with the voluntary standards listed in the voluntary standard survey. The new device and predicate devices are substantially equivalent in the areas of technical characteristics, general function, application, and intended use does not raise any new potential safety risks and is equivalent in performance to existing legally marketed devices.
Nonclinical tests demonstrate that the device is as safe, as effective, and performs as well as the predicate device.
Therefore, the TOPAZ Mobile DR System, is substantially equivalent to the predicate device.
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Part 1 — Search, results, and everyday workflows 16 min
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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.
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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.
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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?
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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.
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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.
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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.
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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.