Non-invasive, non-ionizing diagnostic 2D & 3D imaging system for use on the head, spine, torso, abdomen and extremities.
Device Story
Virgo MRI System is an open-configuration magnetic resonance imaging device utilizing a 0.35 Tesla C-shaped permanent magnet. It acquires hydrogen-1 proton imaging and spectroscopy data. The system includes a host computer, gradient subsystem, and various RF coils (head, body/spine, solenoid). It is operated by trained personnel in a clinical setting. The device transforms raw magnetic resonance signals into 2D/3D diagnostic images, including sagittal, transverse, coronal, and cross-sectional views. It supports advanced sequences like Fast Spin Echo, Inversion Recovery, and MR Angiography. Output is displayed on a console for physician review to assist in clinical diagnosis. The open design provides patient comfort and accessibility. The system features digital RF electronics, a low-noise preamplifier, and optional post-processing/image enhancement packages. It is DICOM compliant for integration into hospital imaging workflows.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
0.35 Tesla C-shaped permanent magnet; homogeneity +/- 10 ppm with 30 cm DSV. Gradient strength 10mT/m, 0.6ms rise time. Air-cooled. RF subsystem includes quadrature head/body coils and solenoid coils. Digital RF electronics with 5kW max transmitter power. Host computer: Dual Pentium CPU, 128MB RAM, 2.1GB HDD. Connectivity: DICOM compliant, laser camera interface. Standards: ASTM, ISO 9000 series, QSR/CGMP.
Indications for Use
Indicated for non-invasive, non-ionizing diagnostic 2D and 3D imaging of the head, spine, torso, abdomen, and extremities in patients requiring MRI examination.
Regulatory Classification
Identification
A magnetic resonance diagnostic device is intended for general diagnostic use to present images which reflect the spatial distribution and/or magnetic resonance spectra which reflect frequency and distribution of nuclei exhibiting nuclear magnetic resonance. Other physical parameters derived from the images and/or spectra may also be produced. The device includes hydrogen-1 (proton) imaging, sodium-23 imaging, hydrogen-1 spectroscopy, phosphorus-31 spectroscopy, and chemical shift imaging (preserving simultaneous frequency and spatial information).
Special Controls
*Classification.* Class II (special controls). A magnetic resonance imaging disposable kit intended for use with a magnetic resonance diagnostic device 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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K990153
STILL
POINT
Regulatory Authority: Safe Medical Devices Act of 1990, 21 CFR 807.92
### 1. Device Name:
Virga™ MRI SYSTEM Trade Name:
Common Name(s): MRI System
Classification Name(s): magnetic resonance diagnostic device
### 2. Establishment Name & Registration Number:
Name: MILLENNIUM TECHNOLOGY, INC. Number: Pending
### 3. Classification:
## & 892.1000 Magnetic resonance diagnostic device.
(a) Identification. A magnetic resonance diagnostic device is intended for general diagnostic use to present images, which reflect the spatial distribution and/or magnetic resonance spectra, which reflect frequency and distribution of nuclei exhibiting nuclear magnetic resonance. Other physical parameters derived from the images and/or spectra may also be produced. The device includes hydrogen-1 (proton) imaging, sodium-23 imaging, hydrogen-1 spectroscopy, phosphorus-31 spectroscopy, and chemical shift imaging (preserving simultaneous frequency and spatial information).
(b) Classification. Class II.
[53 FR 5078, Feb. 1, 1989]
Device Class: Class II Classification Panel: Radiology Devices Panel Product Code(s): 90LNH
### 4. Section 514 Compliance
MILLENNIUM TECHNOLOGY, INC. intends to comply fully with the general controls authorized under Sections 501, 502, 510, 516, 518, 519, and 520 of the Food, Drug, and Cosmetic Act.
### 5. Performance Standards
Food and Drug Administration mandated Performance standards MRI systems are not in effect. MILLENNIUM TECHNOLOGY, INC. will comply with all voluntary Performance Standards applicable to MRI systems. At the present time, various performance standards such as ASTM, ISO, QSR/CGMP and in-house SOP standards are used.
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### 6. Special Controls:
MILLENNIUM TECHNOLOGY, INC. will comply with all special controls currently in effect, including:
(a) The provisions of § 1005.1 through 1005.24 are applicable to electronic products, which are subject to the standards prescribed under this subchapter and are offered for importation into the United States.
(b) Section 1005.25 is applicable to every manufacturer of electronic products offering an electronic product for importation into the United States.
Scope. The standards listed in this subchapter are prescribed pursuant to section ട്ട 1010.1 358 of the Radiation Control for Health and Safety Act of 1968 (42 U.S.C. 263f) and are applicable to electronic products as specified herein, to control electronic product radiation from such products. Standards so prescribed are subject to amendment or revocation and additional standards may be prescribed as are determined necessary for the protection of the public health and safety. [40 FR 32257, July 31, 1975]
### 4. Equivalent Predicate Device:
MILLENNIUM TECHNOLOGY, INC. believes that the Vog™ MRI SYSTEM is substantially equivalent to the following MRI system:
- AIRIS II M.R.I System, K961876, K974212, K980691 by Hitachi Medical Systems 1. America.
The comparison device represents an MRI system that is functionally and technologically equivalent. Equivalency can be drawn with respect to the design, intended use, clinical utility and "open design" configuration. To facilitate comparison of the Virge™ MRI SYSTEM to the comparison system identified above, a comparison table is provided below.
### 5. Device Description:
The Vaya MRI SYSTEM is functionally similar to most existing MRI systems. General specifications are as follows:
# Magnet Subsystem
0.35 Telsa C-Shaped Compact Permanent Magnet Optimized Pole Design Homogeneity +/- 10 ppm with30 cm DSV Dimension 110cm x 160cm x 180cm Detachable Patient Table 2nd Detachable Patient Table Gradient Subsystem Strenath: 10mT/m Rise Time: 0.6ms Air Cooled RF Subsystem Quadrature Head Coil Quadrature Body/Spine Coil 3 Solenoid Coils for Extremities, Shoulder and C Spine Low Noise Preamplifier (0.5 dB Noise Figure) Digital RF Electronics Maximum Transmitter Power 5kW
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### Computer System
Host Computer: Dual Pentium CPU True Multi-tasking NT Environment All JAVA Language Programming RAM: 128MB Hard Disk: 2.1GB Image Capacity: 9000 256x256 1.7 GB WORM Archiving Remote System Maintenance Console Patient Registration Scanning Post-Processing & Image Enhancement (option) Display & Analysis Package Archiving User Defined Protocols User Specific Menus View Console (option) DICOM Compliant Laser Camera Interface Via 3M Protocol Laser Camera (option) CD Rewritable Drive (option) Protocols As Described on the Intended Use Page Site Requirements 5 Gauss Line 15" x 15" Maximum 3 Phase AC Power20kVA No Water Requirement
### Applicant Name & Address: ર્ભ.
MILLENNIUM TECHNOLOGY, INC. 855 W. 12th Avenue Vancouver, B.C., Canada V5Z1M9 604.872.6039 - 604.872.0288 fax
#### 7. Company Contact:
Regulatory Affairs MILLENNIUM TECHNOLOGY, INC. 855 W. 12th Avenue Vancouver, B.C., Canada V5Z1M9 604.872.6039 - 604.872.0288 fax
#### 8. Submission Correspondent:
Mr. David W. Schlerf Buckman Company, Inc. 200 Gregory Lane, Suite C-100 Pleasant Hill, CA 94523-3389 925.356.2640 - 925.356.2654 - fax
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### 9. Performance Standards:
United States Food and Drug Administration mandated performance standards for this device do not exist. Various voluntary performance standards are utilized. Voluntary standards utilized include ASTM. Standard Operating Procedures, vendor & process certification and qualification procedures, Quality Systems Regulations, ISO materials standards and ISO 9000 series quality regulations.
MILLENNIUM TECHNOLOGY. INC. also meets appropriate general controls authorized under Sections 501, 502, 510, 516, 518, 519, and 520 of the Food, Drug, and Cosmetic Act,
### Special Controls: 10.
MILLENNIUM TECHNOLOGY, INC. will comply with all special controls currently in effect, including:
(a) The provisions of § 1005.1 through 1005.24 are applicable to electronic products, which are subject to the standards prescribed under this subchapter and are offered for importation into the United States.
(b) Section 1005.25 is applicable to every manufacturer of electronic products offering an electronic product for importation into the United States.
ട്ട 1010.1 Scope. The standards listed in this subchapter are prescribed pursuant to section 358 of the Radiation Control for Health and Safety Act of 1968 (42 U.S.C. 263f) and are applicable to electronic products as specified herein, to control electronic product radiation from such products. Standards so prescribed are subject to amendment or revocation and additional standards may be prescribed as are determined necessary for the protection of the public health and safety. [40 FR 32257, July 31, 1975]
| FEATURE | VIRGO MRI SYSTEM | Hitachi | SE? |
|----------------------|--------------------------------------------------------------------------------------------------------------------------------|---------------------------|-----|
| Indications for Use: | Non-invasive, non-ionizing diagnostic 2D & 3D imaging<br>system for use on the head, spine, torso, abdomen and<br>extremities. | Same | YES |
| Design: | Open MRI | Open MRI | YES |
| Magnetic Field: | .35T | .30T | YES |
| Magnet Type: | Perm. | Perm. | YES |
| Origin: | Canada | Japan | YES |
| Manufacturer: | MTI | Hitachi | YES |
| Product Code: | 90LNH | 90LNH | YES |
| K - Number: | PENDING | K961876, K974212, K980691 | YES |
### 11. Summary Comparison Table:
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### DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
8 1999
Millenium Technology, Inc. C/O Buckman Company, Inc. 200 Gregory Lane, Suite C-100 Pleasant Hill, CA 94523-3389 Attn: David W. Schlerf
Re:
K990153 Virgo MRI System Dated: July 5, 1999 Received: July 23, 1999 Regulatory class: II 21 CFR 892.1000/Procode: 90 LNH
Dear Mr. Schlerf:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for ase 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). 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 (Premarket Approval), 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 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regult in . regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or requlations.
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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. 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 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers 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,
Capt. Daniel G. Schultz, M.D.
Capt. Daniel G. Schultz, M.D. Acting Director, Division of Reproductive, Abdominal, Ear, Nose and Throat, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Page 1 - of
K 99 0153 510(k) Number :_
Virga™ MRI SYSTEM Device Name(s):
# Intended Use(s) of the Device:
Non-invasive, non-ionizing diagnostic 2D & 3D imaging system for use on the head, spine, torso, abdomen and extremities.
# Diagnostic Image capabilities include:
- Sagittal section images
- Cross section & curved cross section images ●
- Transverse section images .
- Coronal section images ●
- 2D Fast Spin Echo ●
- 2D Inversion Recovery .
- 2D Fast Inversion Recovery ●
- 2D Dual Slice Acquisition ●
- 2D/3D Spin Echo ●
- 2D/3D Gradient Echo .
- 2D/3D Gradient Echo w/ Rephasing .
- 2D/3D Steady State Acquisition w/ rewind Gradient Echo (SARGE) ●
- MR Angiography Image Processing ●
- MR Angiography Half Echo/High Resolution High Definition ●
- 2D/T1/T2 Weighted Imaging ●
- T1/T2 Proton Density Measurements ●
PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NECESSARY Concurrence of CDRH, Office of Device Evaluation (ODE)
Yamil A. Seppern
Division Sign Off
(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological Devices 510(k) Number
Prescription Use
(Per 21 CFR 801.109)
OR
Over-The-Counter Use
(Optional format 1-2-96)
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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.