D-SPECT is an emission computed tomography system intended to detect the location and distribution of gamma ray radionuclides in the body and produce cross-sectional images through computer reconstruction of the data. The device includes display equipment, patient and equipment supports, component parts, and accessories. D-SPECT is primarily intended for cardiac applications. D-SPECT supports radionuclides within the energy range of 40 -170 keV.
Device Story
D-Spect Cardiac Scanner System is a SPECT imaging device for myocardial perfusion imaging; inputs include gamma ray radionuclide emissions from patient; device utilizes detector head with 10 rotating detector boards, gantry, and patient chair; system performs computer reconstruction of data to produce cross-sectional images; includes RFID-based patient and syringe identification accessories; operated by clinical staff via acquisition station console; system design features closed detector head with internal rotating boards, eliminating external moving parts around patient; enables shorter scan times compared to conventional SPECT; output used by physicians for cardiac diagnostic assessment; benefits include improved imaging efficiency and patient throughput.
Clinical Evidence
Clinical evidence consists of sample images from three clinical cases. No large-scale clinical trial data provided. Safety and performance validated via non-clinical testing, including EMC/safety standards (IEC/EN-60601-1, IEC/EN 60601-1-2) and NEMA NU 1 performance measurements for scintillation cameras.
Technological Characteristics
SPECT system; 10 detector boards rotating on vertical axis; collimators, crystals, and position detection circuits; energy range 40-170 keV; RFID-based patient/syringe identification; conforms to IEC/EN-60601-1, IEC/EN 60601-1-2, and NEMA NU 1 standards.
Indications for Use
Indicated for patients requiring myocardial perfusion imaging via emission computed tomography. Supports radionuclides in the 40-170 keV energy range. Intended for cardiac applications.
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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### 510(K) SUMMARY
## D-SPECT SYSTEM
# 510(k) Number K_062450
OC1 20 2006
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| Applicant's Name: | Spectrum Dynamics Ltd. |
|----------------------|---------------------------------------------------------------|
| | 2 Haetgar St. |
| | Carmel Building P.O.Box 2026 |
| | Tirat Hacarmel 39120 |
| | Israel |
| | Tel: +972-4-8580774 |
| | Fax: +972-4-8580776 |
| | e-mail: info@spectrum-dynamics.com |
| Contact Person: | Ahava Stein/ Ofer Hornick |
| | A. Stein - Regulatory Affairs Consulting |
| | 20 Hata'as St. |
| | Kfar Saba 44425 |
| | Israel |
| | Tel. + 972-9-7670002 |
| | Fax. +972-9-7668534 |
| | e-mail: asteinra@netvision.net.il or oh_asra@netvision.net.il |
| Date Prepared: | August 2006 |
| Trade Name: | D-Spect™ Cardiac Scanner System |
| Classification Name: | CFR Classification section 892.1200 (Product code KPS) |
| Classification: | Class II medical Device |
.
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The D-Spect™ Cardiac Scanner System is substantially equivalent Predicate Device: to a combination of the following predicate devices:
- Virgo (K031825) manufactured by 3D, Danish Diagnostic Development A/S (device a.k.a C.Cam, owned by Siemens Medical). Virgo is a Gamma Camera system (SPECT) which is intended to detect the location and distribution of gamma ray radionuclides similar to the D-Spect™ device.
- Cardiarc (K053062) manufactured by Cardiarc Ltd. Cardiarc is a SPECT imaging device which is intended for production of SPECT clinical images of the heart in nuclear medicine applications similar to the D-Spect™ device.
- Predicate devices for device accessory used for identifying patient:
- a) SmartBand (Class 1 510(k) exempt), provides patient identification
- b) CareCheck (BK040053)- used in blood banks; provides patient and product identification.
- c) VeriChip implantable RFID Transponder (K033440).
Spectrum Dynamics' D-Spect™ Cardiac Scanner System is a Device Description: SPECT device, which is designed to perform myocardial perfusion imaging. The device is comprised of a detector head, gantry, and patient chair. Device operation is controlled from an acquisition station console. The system is supported by use of data-transfer accessories (RFID tags), which are attached to the patient's wrist and to the syringe containing the radio-pharmaceutical agent, for patient and syringe positive identification. The cardiac gamma camera is designed such that there are no external moving parts that surround the patient. Detector boards rotate within the closed
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detector head. The special scanning geometry and detector technology, enable shorter scan times.
Intended Use / Indication for Use: D-SPECT is an emission computed tomography system intended to detect the location and distribution of gamma ray radionuclides in the body and produce cross-sectional images through computer reconstruction of the data. The device includes display equipment, patient and equipment supports, component parts, and accessories. D-SPECT is primarily intended for cardiac applications. D-SPECT supports radionuclides within the energy range of 40 -170 keV.
### Comparison of Technological Characteristics with the predicate device:
D-Spect as other SPECT devices uses arrays of collimators, crystals, and position detection circuits to obtain clinical from patients injected with gamma emitting information radionuclide materials. The operating principle is the same basic principle and the same basic technology is used in all SPECT devices, including the Virgo and Cardiarc predicate devices. Although the design of detector boards (10 boards rotating on their vertical axis) is different compared to conventional SPECT cameras (with two crystals moving around the patient), the principle of photon detection is identical and the resulting images are identical to those of other devices. All of the above features are similar to these features in the predicate devices.
Performance Standards: None.
The design of the D-Spect™ Cardiac Scanner System conforms to the following voluntary standards:
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IEC/EN-60601-1: Medical Electrical Equipment; Part 1: General Requirements for Safety. Second edition (1990), including amendments #1(1993), #2(1995), #13(1996). IEC/EN 60601-1-2: Medical Electrical Equipment; Part 1-2: Collateral Standard: Electromagnetic Compatibility- Requirements and Tests (2001) NEMA NU 1: Performance Measurements of Scintillation Cameras (1994) (relevant sections).
The D-Spect™ Cardiac Scanner System has been subjected Non-Clinical Test Data: to extensive safety testing, performance testing, and validation before release. These tests included EMC and Safety testing according to international standards IEC/EN-60601-1 and IEC/EN 60601-1-2, testing according to the relevant sections of the NEMA NU 1 standard, and software validation testing.
Clinical Performance Data: Sample images from three clinical cases using the D-SPECT device.
Conclusions Drawn from Non-Clinical and Clinical Tests: The performance tests demonstrate that D-SPECT device may be safely and effectively used myocardial perfusion imaging. The software validation and performance validation tests for scintillation cameras (NEMA NU 1), as well as the clinical images provided, demonstrate that the D-SPECT device meets its design and performance specifications and is substantially equivalent to the predicate devices.
The intended use of the D-Spect™ Cardiac Scanner System Substantial Equivalence: is substantially equivalent to the currently distributed predicate Cardiac SPECT systems intended for cardiac nuclear imaging
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applications. Furthermore, the basic technological characteristics of the D-Spect™ Cardiac Scanner System are similar to the predicate devices. The differences in the technological characteristics do not raise new questions of safety and effectiveness. Furthermore, the performance data support the safety and effectiveness of the new device. Consequently, the D-Spect™ Cardiac Scanner System is substantially equivalent to the Virgo and Cardiarc predicate devices.
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Image /page/5/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" arranged around the perimeter. Inside the circle is a stylized design featuring three abstract human figures, possibly representing health, hope, and well-being.
Food and Drug Administration 9200 Corporate Blvd. Rockville MD 20850
Spectrum Dynamics Ltd. % Ms Ahava Stein A. Stein Regulatory Consulting 20 Hata'as St. Kfar Saba 44425 ISRAEL
OCT 2 0 2006
Re: K062450
Trade/Device Name: D-Spect™ Cardiac Scanner System Regulation Number: 21 CFR 892.1200 Regulation Name: Emission computed tomography system Regulatory Class: II Product Code: KPS Dated: August 17, 2006 Received: August 22, 2006
Dear Ms. Stein:
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 (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.
Image /page/5/Picture/10 description: The image is a black and white circular logo. The logo contains the text "1906-2006" at the top and the letters "PA" in the center. Below the letters "PA" is the word "Centennial" and three stars. The logo appears to be a commemorative emblem for a centennial celebration.
Promoting and Promoting Public Health.
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Please be advised that FDA's issuance of a substantial equivalence determination does not mean r least of advised that I Dri-s issualited our device complies with other requirements of the Act that I Dri has made a deceimnulations administered by other Federal agencies. You must of any I cacal statutes and regarations sincluding, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set CrK Fatt 807), laochilg (21 OF N F at 800), go and if applicable, the electronic form in the quality systems (Sections 531-542 of the Act); 21 CFR 1000-1050.
This letter will allow you to begin marketing your device as described in your Section 510(k) I his icher will anow you've cogin maing of substantial equivalence of your device to a legally premarket notification. The President 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 If you desire specific advice to: your are of the following numbers, based on the regulation number at the top of this letter:
| 21 CFR 876.xxx | (Gastroenterology/Renal/Urology | 240-276-0115 |
|----------------|---------------------------------|--------------|
| 21 CFR 884.xxx | (Obstetrics/Gynecology) | 240-276-0115 |
| 21 CFR 894.xxx | (Radiology) | 240-276-0120 |
| Other | | 240-276-0100 |
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under (21GI IT Fall 607.97). - 10d may of all Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150
or at its Internet address http://www.fda.gov/cdrl/industry/support/index.html.
Sincerely yours,
Nancy C Hodgdon
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): `K062450
Device Name: D-Spect™ Cardiac Scanner System
Indications for Use:
D-SPECT is an emission computed tomography system intended to detect the location and distribution of gamma ray radionuclides in the body and produce cross-sectional images through computer reconstruction of the data. The device includes display equipment, patient and equipment supports, component parts, and accessories.
D-SPECT is primarily intended for cardiac applications. D-SPECT supports, radionuclides within the energy range of 40 -170 ke V.
Prescription Use V (Per 21 C.F.R. 801 Subpart D) C)
OR .
Over-The-Counter Use (Optional Format Subpart
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Nancy Broadon
(División Sign-Off
Division of Reproductive, Abdominal,
and Radiological Devices
510(k) Number
K06245
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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.
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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.
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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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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.