The Cyclone is an emission computed tomography system intended to detect the location and distribution of gamma ray emitting radionuclides in the body and produce cross-sectional images through computer reconstruction of the data. The data can then be transmitted to, or retrieved by, existing commercially available image processing software packages and accompanying computer equipment. The Cyclone intended use is for cardiac applications. The Cyclone supports radionuclides within the energy of 50-200keV.
Device Story
Cyclone is a dedicated nuclear cardiology gamma camera system. It utilizes a dual-head detector configuration mounted on a gantry base with a patient chair. Input consists of gamma rays emitted from intravenously administered radiopharmaceuticals; these are captured by a collimator and interact with a NaI scintillation crystal. Photomultiplier tubes convert light flashes into electrical signals containing energy and positional data. The system performs computer reconstruction to produce cross-sectional images. Operated by clinical staff in a clinical environment, the device uses hand controls for detector positioning and software for acquisition. Output is processed via Segami Mirage software to assist clinicians in visualizing cardiac radionuclide distribution, aiding in diagnostic decision-making for cardiac conditions.
Clinical Evidence
Bench testing only. Performance evaluated per NEMA NU 1-2001 standards. Key metrics: energy range 50-200 keV, count rate 300 Kcps, energy resolution 9.2% FWHM, intrinsic uniformity ≤2.5% integral/≤1.5% differential, and intrinsic spatial resolution ≤3.0 mm FWHM/≤6.2 mm FWTM.
Technological Characteristics
Dual-head gamma camera; NaI scintillation crystal; 35 photomultiplier tubes per head; energy range 50-200 keV. Materials: painted iron, aluminum, sheet metal, plastic. Connectivity: data transmission to external image processing software. Standards: IEC 601, UL544, NEMA NU 1-2001. Software: Segami Mirage Acquisition.
Indications for Use
Indicated for cardiac applications in patients requiring nuclear cardiology imaging to detect location and distribution of gamma ray emitting radionuclides (50-200keV).
Regulatory Classification
Identification
An emission computed tomography system is a device intended to detect the location and distribution of gamma ray- and positron-emitting radionuclides in the body and produce cross-sectional images through computer reconstruction of the data. This generic type of device may include signal analysis and display equipment, patient and equipment supports, radionuclide anatomical markers, component parts, and accessories.
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MAR 2 3 2006
# Spectrica
# KO160480
.
### 26 510(k) SUMMARY
As required by 21 CFR 807.92
#### 26.1 Application Identification
Applicant's Name and Address:
Spectrica. 15 Antares Drive, Unit #2, Ottawa, Ontario, Canada K2E 7Y9 Tel: 613-225-5554 Fax: 613-225-3331
Contact Person:
Tel: (613) 225-5554 ext. 307 Fax (613) 225-3331 Email: sjude@spectrica.com
Steve Jude
Address of Manufacturing Site:
Same as Applicant's address above
Summary Date:
February 22, 2006
#### 26.2 Device Identification
Device Name: Trade Name: Common Name: Regulation Name:
Cyclone maiCAM180 Gamma Camera System Emission Computed Tomography System as per 21 CFR 892.1200
#### 26.3 Type of Submission
Traditional
#### 26.4 Predicate Device
Manufacturer: Trade Name: 510(K) Number: Classification Code: 3D, Danish Diagnostic Development Virgo K031825 90 KPS
#### 26.5 Device Description
Description:
The Cyclone camera is a dedicated Gamma Camera for nuclear cardiology. The intended use of Cyclone is to detect the location and distribution of gamma ray emitting radionuclides in the body and store the image data. This device includes accessories such as signal
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analysis and display equipment, patient and equipment supports. radionuclide anatomical markers, component parts, and accessories. Radiopharmaceuticals are administered intravenously. The Cyclone records the distribution of the tracer in vivo. Gamma rays are emitted from the tracer. A collimator is used to accept only the gamma rays with defined orientations, usually parallel for detection. The collimator is actually analogous to a camera lens. The gamma rays admitted into the scintillation camera detector interact with a scintillating crystal, causing a very small flash of light at each point of interaction. The crystal is large, flat and thin (see specifications for size). The pattern of light flashes is detected by photomultiplier tubes that convert the light into electrical signals, each signal proportional to the energy of the gamma ray and also carrying precise positional information. Only gamma rays with the correct energy for the tracer used and with meaningful orientation to the patient are imaged.
The Cyclone camera consists of a base which supports a wall or track that in turn supports and guides a fixed 90 degree dual head around a patient chair. The motions and set-up of the camera can be controlled with the hand control. Detector motions are controlled by software and are initiated by the hand control.
#### 26.6 Intended Use
The Cyclone is an emission computed tomography system intended to detect the location and distribution of gamma ray emitting radionuclides in the body and produce cross-sectional images through computer reconstruction of the data.
The Cyclone intended use is for cardiac applications. The Cyclone supports radionuclides within the energy of 50-200keV.
#### 26.7 Substantial Equivalence Comparison:
Summary: The device has the same technological and functional characteristics as the predicate device. The Cyclone and the predicate device are essentially diagnostic tools with the same indications for use. This comparison shows that no new safety and effectiveness concerns are raised concerning the Cyclone.
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#### Comparison Table:
| Feature/Spec | Predicate - Virgo | Cyclone |
|------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| FDA status | FDA 510k Clearance | n/a |
| FDA 510k # | K031825 | Unknown |
| Intended Use | The intended use is to<br>detect the location and<br>distribution of gamma<br>ray emitting<br>radionuclides in the<br>body and produce<br>cross-sectional images<br>through computer<br>reconstruction of the<br>data. This device<br>includes accessories<br>such as signal analysis<br>and display equipment,<br>patient and equipment<br>supports, radionuclide<br>anatomical markers,<br>component parts, and<br>accessories. | The intended use is to<br>detect the location and<br>distribution of gamma<br>ray emitting<br>radionuclides in the<br>body and produce<br>cross-sectional images<br>through computer<br>reconstruction of the<br>data. This device<br>includes accessories<br>such as signal analysis<br>and display equipment,<br>patient and equipment<br>supports, radionuclide<br>anatomical markers,<br>component parts, and<br>accessories. |
| Target Population | The Virgo is primarily<br>intended for cardiac<br>applications in a<br>clinical environment. | Same |
| Electrical Safety | Device is certified to<br>electrical safety<br>standards by a third<br>party organization prior<br>to use on human<br>patients. | Same |
| Energy used/delivered | There is no new energy<br>source requirement.<br>The energy<br>requirement is 115 V,<br>60 Hz (or 240 V, 50<br>Hz) | Same |
| Standards met | IEC 601 and UL544 | Same |
| User Instructions | User instructions<br>contain the operating<br>instructions pertinent to<br>this system including<br>safety features,<br>warnings, system<br>calibration, and<br>processing and<br>workstation features<br>and instructions. | Same. |
| Design | A gantry base on the<br>floor supports a console<br>with electronics and a<br>robotic detector arm.<br>The detector arm serves<br>as a detector support in<br>an unbalanced design. | The gantry base on the<br>floor supports a wall /<br>track that hold the<br>detectors in an<br>unbalanced design. |
| Material | Painted and cremated<br>iron and aluminum<br>plates and casts.<br><br>Aluminum plate<br>covers. | Painted and cremated<br>iron and aluminum<br>plates.<br><br>Sheet metal and plastic<br>covers. |
| Patient Support | The patient support<br>comprises a chair<br>mounted on the gantry<br>base in which the<br>patient is seated supine<br>during acquisition.<br><br>The chair includes a<br>rotate motion capable<br>of tilting the entire<br>chair with patient<br>between upright<br>position (patient load)<br>and a decline scan<br>position about 20 | The patient support<br>comprises a chair<br>mounted on the gantry<br>base in which the<br>patient is seated upright<br>during acquisition.<br><br>The chair is capable of<br>moving in the X and Y<br>axis relative to the<br>detector heads while<br>the detector rotate in<br>the Z axis around the<br>patient. |
| | degree from horizontal. | |
| Detector Design | By manual control, the<br>seat of the chair (with<br>patient) can be moved<br>up or down to position<br>the heart of the patient<br>within the detector<br>head. | By manual control, the<br>seat of the chair (with<br>patient) can be moved<br>up or down to position<br>the heart of the patient<br>within the detector<br>head. |
| | The two detector heads<br>are mounted into a<br>single copper / zinc/<br>lead alloy (UNS)<br>designation;C94300<br>casting covered by<br>aluminum plate covers<br>with collision sensor<br>pads. | The two detector heads<br>are mounted into a<br>separate lead /<br>aluminum bowl<br>covered by sheet metal<br>covers with collision<br>sensor pads. |
| | Each detector<br>comprises a NaI crystal<br>and 24 3" square<br>photomultiplier tubes<br>and electronics for<br>position determination<br>and correction for<br>uniformity and linearity<br>errors. | Each detector<br>comprises a NaI crystal<br>and 35 2.3" square<br>photomultiplier tubes<br>and electronics for<br>position determination<br>and correction for<br>uniformity and linearity<br>errors. |
| Warnings | A warning label is<br>applied to all<br>collimators<br>highlighting<br>instructions. Caution<br>and high voltage labels<br>are applied in<br>appropriate areas and<br>as required by electrical<br>standards. | Same |
| Physical Description: | | |
| 1) Field of View | 14.6 x 8.4 inches | 14.8 x 9.5 inches |
| 2) PMT's | 24 tubes per head | 35 tubes per head |
| 4) Operator Interface | Hand-control and<br>keyboard used for<br>image acquisition,<br>detector head and<br>gantry control | Same |
| Performance: | | |
| 1) Energy range | 60 - 170 keV | 50 - 200 keV |
| 2) Count rate | 290 Kcps | 300 Kcps |
| 3) Energy resolution | ≤9.4 % FWHM | 9.2 % FWHM |
| 4) Intrinsic uniformity | ≤2.5 % integral<br>≤ 1.5 % differential | ≤2.5 % integral<br>≤ 1.5 % differential |
| 5) Intrinsic spatial<br>resolution | ≤3.7 mm FWHM<br>≤7.6 mm FWTM | ≤3.0 mm FWHM<br>≤6.2 mm FWTM |
| Acquisition Software: | Segami Mirage<br>Acquisition | Segami Mirage<br>Acquisition |
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·
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.
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#### Performance
All tests have been performed based NEMA Standards. NU 1-2001, Performance Measurements of Scintillation Cameras.
#### 26.8 Conclusion
In the opinion of Spectrica, the Cyclone camera is substantially equivalent in terms of safety and effectiveness to the legally marketed Virgo (K031825) system.
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#### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Mr. Steve Jude General Manager Spectrica 15 Antares Drive, #2 Ottawa, Ontario, K2E 7Y9 CANADA
Re: K060486 Trade/Device Name: Cyclone - maiCAM 180 Regulation Number: 21 CFR 892.1200 Regulation Name: Emission computed tomography system Regulatory Class: II Product Code: KPS Dated: February 23, 2006 Received: February 24, 2006
Dear Mr. Jude:
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.
MAR 2 3 2006
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 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 (0)S) regulation (21 CFR Part 820); and if applicable, the clectronic 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 narketing 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.xxxx | (Gastroenterology/Renal/Urology) | 240-276-0115 |
|-----------------|----------------------------------|--------------|
| 21 CFR 884.xxxx | (Obstetrics/Gynecology) | 240-276-0115 |
| 21 CFR 892.xxxx | (Radiology) | 240-276-0120 |
| Other | | 240-276-0100 |
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). 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 (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industrv/support/index.html.
Sincerely vours.
Nancy C. Brigdon
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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## 11 INDICATION FOR USE - OPTIONAL FORMAT 1-2-96
Indication for Use
KD60486 510(k) Number (if known): =
Cyclone - maiCAM180 Device Name:
Indication for Use:
The Cyclone is an emission computed tomography system intended to detect the location and distribution of gamma ray emitting radionuclides in the body and produce cross-sectional images through computer reconstruction of the data. The data can then be transmitted to, or retrieved by, existing commercially available image processing software packages and accompanying computer equipment.
The Cyclone intended use is for cardiac applications. The Cyclone supports radionuclides within the energy of 50-200keV.
Prescription Use _ ` (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IFNEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
David A. Ingram
(Division Sign-Off) Division of Reproductive, Abdomin and Radiological Devices 510(k) Number .............
Page 1 of
Spectrica
510(k) Premarket Notification Rev1.0
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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
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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.
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.
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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
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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.
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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.
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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.
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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.