The Imatron EBT scanner system -- when used angiographically -- is intended to combine the capabilities of both a CT and angiography system. When used for this purpose, the system is intended to perform Electron Beam Angiography, i.e., "EBA".

More specifically, the EBT system is intended:

1. to function as a diagnostic x-ray system to produce two and three dimensional images of the heart, blood vessels, or lymphatic system from a volume of computer reconstructed cross-sectional images from x-ray transmission data from the same axial plane taken at different angles;
1. to permit radiologic visualization during or after injection of a contrast medium; and
1. to permit the transmission data from certain three dimensional images to also be presented in time-sequenced or cine fashion.

Finally, such system is intended to be used consistent with those already classified and set forth in 21 CFR Sections 892.1600 and 892.1750.

Device Description

Imatron's current EBT scanner system, i.e., the CT system to be used for CT Angiography, is composed of essentially two subsystems, i.e., a CT scanner (and its associated components, parts, and accessories) and a workstation (and its associated components, parts, and accessories). Imatron's scanner operates by directing a focused beam of electrons along tungsten target rings to produce X-rays which pass through the human body at multiple angles as in conventional CT scanning systems. Such EBT scanner is capable of producing CT slices at rapid speeds since the data is produced by electronic rotation of the electron beam itself rather than the mechanical rotation of an X-ray tube as in conventional CT scanning systems. The EBT system's workstation is either directly incorporated into and physically a part of the system or is indirectly incorporated into the system via a data connection port. Such workstations are all able to receive EBT cross-sectional images (either through a direct connection or through a DICOM 3.0 or higher compatible interface) and have a cleared intended use which includes being able to produce 3 and/or 4 dimensional volume imaging (including, among other functions, volume rendering, surface rendering, maximum intensity projections, or reformatting).

AI/ML Overview

The provided text does not contain detailed information about specific acceptance criteria, a study proving device performance against those criteria, or a table of acceptance criteria with reported performance. The document is a 510(k) summary for an Imatron EBT scanner system, primarily focusing on establishing substantial equivalence with existing devices for an expanded intended use (CT Angiography).

Therefore, I cannot populate all sections of your request based on the provided input. However, I can extract information relevant to the study design elements you requested where available in the document.

Here's a breakdown of what can be inferred or explicitly stated from the provided text:

1. A table of acceptance criteria and the reported device performance

Not Available. The document does not provide a table of acceptance criteria or specific quantitative performance metrics like sensitivity, specificity, accuracy, etc., for the device's angiographic capabilities. The submission focuses on substantial equivalence to existing CT and angiography systems, rather than presenting a performance study with pre-defined acceptance criteria.

2. Sample size used for the test set and the data provenance (e.g., country of origin of the data, retrospective or prospective)

Not Available. No information about a specific test set, its sample size, or data provenance is provided. The submission relies on the device being "identical to the prior Imatron Ultrafast CT scanner system" and its inherent capabilities for angiography, rather than a new clinical study.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g., radiologist with 10 years of experience)

Not Available. Since no dedicated test set or clinical study is described, there is no mention of experts used to establish ground truth.

4. Adjudication method (e.g., 2+1, 3+1, none) for the test set

Not Available. No adjudication method is described as there is no specific test set or study.

5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance

Not Available. This submission predates widespread AI integration in medical devices and focuses on hardware capability and intended use expansion. No MRMC study or AI-assisted performance evaluation is mentioned.

6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done

Not Available. The device described is a CT scanner system, not an algorithm. Therefore, "standalone" algorithm performance is not applicable in this context.

7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)

Not Available. Given the nature of the submission (510(k) for substantial equivalence of a physical device for an expanded intended use), there is no mention of a ground truth in the context of a performance study. The "truth" from the regulatory perspective here is whether the device's capabilities align with previously cleared CT and angiography systems.

8. The sample size for the training set

Not Available. No training set is mentioned as this is a hardware device submission, not an AI/algorithm submission.

9. How the ground truth for the training set was established

Not Available. No training set or ground truth for a training set is mentioned.

Summary

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SECTION 10: 510(K) SUMMARY

K 992740

Name and Address of Manufacturer:	Imatron, Inc. 389 Oyster Point Blvd. South San Francisco, CA 94080
Contact:	J.A. Coduto Director of Regulatory Affairs Phone: 503-638-5500 FAX: 503-638-6328 email: jcoduto@imatron.com
Establishment Registration Number:	2936804
Common and Proprietary Names:	Common Names: CT scanner system; Computed tomography X-ray system; Electron beam scanner system; Scanner system; CT angiography system; Electron beam angiography system Proprietary Name: EBT Ultrafast® CT scanner system; Ultrafast CT scanner system; C-100, C-150, C-150LXP or C- 150XP scanner systems
Device Class:	Class II
Classification Name:	21 CFR 892.1750/Procode: 90 JAK Computed tomography x-ray system 21 CFR 892.1600/Procode: 90 IXI Angiography x-ray system
Performance Standards:	The Imatron EBT scanner system meets the applicable requirements of the FDA Performance Standard for lonizing Radiation Emitting Products (i.e., 21 CFR Sections 1020.30, 1020. 31, 1020. 32, and 1020.33).

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Device Description:

Intended Use:

More specifically, the EBT system is intended:

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1. to function as a diagnostic x-ray system to produce two and three dimensional images of the heart, blood vessels, or lymphatic system from a volume of computer reconstructed cross-sectional images from x-ray transmission data from the same axial plane taken at different angles;
1. to permit radiologic visualization during or after injection of a contrast medium; and
1. to permit the transmission data from certain three dimensional images to also be presented in time-sequenced or cine fashion.

Finally, such system is intended to be used consistent with those already classified and set forth in 21 CFR Sections 892.1600 and 892.1750.

Technological Characteristics:

The Imatron EBT scanner system is a combination of a CT and an angiography system.

General Safety and Effectiveness Concerns:

The Imatron EBT scanner system and its components are subject to the Federal Diagnostic Equipment Performance Standard and applicable requirements of 21 CFR Sections 1020.30, 1020.31, 1020.32 and 1020.33 and are certified to meet those requirements. All reports required for such new device have been filled with CDRH. To minimize electrical, mechanical, and radiation hazards, Imatron complies with pertinent recognized and established industry practice, including ISO 9001: Quality System (ANSI/ASQC 29001-

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1994); EN 46001; Application of EN ISO 9001 To The Manufacture Of Medical Devices; EN 60601-1 Electrical-Technical Safety; Council Directive 93/42/EEC: Medical Device Directive; and Council Directive 89/336/EEC: Electro-Magnetic Compatibility.

Substantial Equivalence:

A computed tomography x-ray system is defined as a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. (21 CFR Section 892.1750). This generic type of device may also include signal analysis and display equipment, patient and equipment supports, component parts, and accessories. The Imatron EBT scanner system here in question is not just substantially equivalent to the "1750" systems; it is identical to the prior Imatron Ultrafast CT scanner system which has been repeatedly cleared by FDA as being a "1750" device and, thus, able to be offered for sale in interstate commerce. There are no differences between the two device systems (except that the focus of this submission is to be used for CT Angiography).

An angiographic x-ray system is defined as a device intended for radiologic visualization of the heart, blood vessels, or lymphatic system during or after injection of a contrast medium. (21CFR Section 892.1600). This generic type of device may also include signal analysis and display equipment, patient and equipment supports, component parts and accessories. As indicated above, the CT scanner system here in question has already been cleared (various times) as a CT x-ray system under Section 1750. It logically follows then that such system is 1. an x-ray system, 2. a device intended for radiologic visualization, and 3. capable of producing x-ray images of the heart, blood vessels and lymphatic system (since all "1750" devices are cleared to x-ray

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image every part of the human "body" ). CT scanner systems (i.e. "1750" systems) have been used for decades in association with contrast media; thus, that use too is an inherent use within the scope of current clearance of a "1750" device.

Thus, the Imatron EBT scanner system here in question is substantially similar to all "1600" type devices. It differs principally only in its ability to function in "UltraFast" fashion, i.e., to take its images faster than does a typical scanner system.

Signature

J.A. Coduto Director of Regulatory Affairs

8-12-99

Date:

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DEPARTMENT OF HEALTH & HUMAN SERVICES

Public Health Service

Food and Drug Administration

9200 Corporate Boulevard Rockville MD 20850

Image /page/5/Picture/2 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an abstract image of an eagle.

NOV - 9 1999

J.A. Coduto Director. Regulatory Affairs Imatron, Inc. 389 Oyster Point Blvd. South San Francisco, CA 94080-1998 Re:

K992740 EBT UltraFast® CT Scanner System: UltraFast CT Scanner System: C-100. C-150, C-150LXP or C-150XP Scanner System Dated: August 12, 1999 Received: August 16, 1999 Regulatory class: II 21 CFR 892.1750/Procode: 90 JAK 21 CFR 892.1600/Procode: 90 IZI

Dear Mr. Coduto:

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 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). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls or the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.

If vour 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 requlation (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 regulation may result in requlatory 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 regulations.

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. 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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510(k) Number (if known):

Device Name: EBT ULTAFAST CT SCANNER SYSTEM " ULTAAFAST SCANNON SYSTEM ! C -100 Indications For Use:

More specifically, the EBT system is intended:

1. to function as a diagnostic x-ray system to produce two and three dimensional images of the heart, blood vessels, or lymphatic system from a volume of computer reconstructed cross-sectional images from x-ray transmission data from the same axial plane taken at different angles;
1. to permit radiologic visualization during or after injection of a contrast medium; and
1. to permit the transmission data from certain three dimensional images to also be presented in time-sequenced or ciné fashion.

Finally, such system is intended to be used consistent with those already classified and set forth in 21 CFR Sections 892. 1600 and 892. 1750.

(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

David A. Segeem
(Division Sign Off)

Division of Reproductive, Abdominal, EN and Radiological I 510(k) Number

Prescription Use (Per 21 CFR 801.109)

Over-The-Counter Use

(Optional Format 1-2-96)

Regulation Number and Section

§ 892.1750 Computed tomography x-ray system.

(a)
Identification. A computed tomography x-ray system is a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.(b)
Classification. Class II.