K Number
K192737
Device Name
RCT800
Manufacturer
Date Cleared
2019-10-22

(25 days)

Product Code
Regulation Number
892.1750
Reference & Predicate Devices
Predicate For
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
Intended Use

RCT800 is CBCT and panoramic x-ray imaging system with cephalometric. Which is intended to radiographic examination of the dento-maxillofacial, sinus, TMJ, Airway for diagnostic support for adult and pediatric patients. And a model scan is included as an option. Cephalometric image is also includes wrist to obtain carpus images for growth and maturity assessment for orthodontic treatment. The device is to be operated and used by dentists or other legally qualified heath care professionals.

Device Description

RCT800 is 3D computed tomography for scanning hard tissues like bone and teeth. By rotating the c-arm which is embedded with high voltage generator all-in-one x-ray tube and a detector on each end, CBCT images of dental maxillofacial is attained by recombining data from the same level that are scanned from different angle. Panoramic image scanning function for attaining image of whole teeth, cephalometric scanning option for attaining cephalic image, and Model Scan option for attaining dental model CBCT image are included.

AI/ML Overview

Here's an analysis of the acceptance criteria and study information for the RCT800 device, based on the provided text:

1. Table of Acceptance Criteria and Reported Device Performance

The provided text does not explicitly state numerical acceptance criteria for the imaging performance, but rather indicates that the device's performance was compared to its predicate and found satisfactory. The performance specifications are primarily focused on the operational parameters of the X-ray system.

ParameterAcceptance Criteria (Implied)Reported Device Performance
FunctionalitySimilar to predicate device (RCT800 - K182805)RCT800 has PANO, CEPH (Optional), CBCT, Model Scan modes. Software (RAYSCAN) cleared with K182805.
X-ray Voltage Range (Patient)Within acceptable dental X-ray system parameters60-100kVp (predicate: 60-90kVp)
X-ray Current Range (Patient)Within acceptable dental X-ray system parameters4-17mA (same as predicate)
X-ray Voltage Range (Model Scan)Within acceptable dental X-ray system parameters50-80kVp (same as predicate)
X-ray Current Range (Model Scan)Within acceptable dental X-ray system parameters0.4-0.7mA (same as predicate)
Total FiltrationMin. 2.8 mm Al equivalent (same as predicate)Min. 2.8 mm Al equivalent
Scan Time (CT - Patient)Below 14 seconds (predicate: below 20 seconds)Below 14 seconds
Scan Time (CT - Model Scan)Below 180 seconds (same as predicate)Below 180 seconds
Scan Time (Pano)Below 14 seconds (same as predicate)Below 14 seconds
Scan Time (Ceph Scan type)Below 19 seconds (predicate: below 20 seconds)Below 19 seconds
Scan Time (Ceph One shot)Below 2 seconds (same as predicate)Below 2 seconds
Safety Standards ComplianceAdherence to IEC 60601 series and IEC 61223 seriesComplies with IEC 60601-1, -1-3, -1-6, -2-63, and IEC 60601-1-2.
Image QualityAcceptable quality for intended useLicensed practitioner reviewed sample clinical images and found them to be of acceptable quality for intended use.

2. Sample Size Used for the Test Set and Data Provenance

  • Sample Size for Test Set: The text states, "Clinical images were provided these images were not necessary to establish substantial equivalence based on the modifications to the device but they provide further evidence in addition to the laboratory performance data to show that the complete system works as intended." It also mentions, "These images were gathered from the all detector installed with RCT800 on any protocols with random patient age, gender, and size." A specific numerical sample size (e.g., number of patients or images) is not provided.
  • Data Provenance: The images were collected "at the 2 offices where the predicate device is installed." The text does not specify the country of origin but states the manufacturer (RAY Co., Ltd.) is from the Republic of Korea. It is implied to be prospective as the images were gathered for the purpose of this submission and involve "random patient age, gender, and size" on newly installed devices, rather than being pulled from existing archives.

3. Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications

  • Number of Experts: "Two licensed practitioners/clinicians."
  • Qualifications of Experts: "Licensed practitioners/clinicians." No specific experience level (e.g., "10 years of experience") is provided, but being "licensed" implies a baseline qualification for medical interpretation.

4. Adjudication Method for the Test Set

The text states, "A licensed practitioner reviewed the sample clinical images and found them to be of acceptable quality for the intended use." It does not describe a formal adjudication method (like 2+1 or 3+1 consensus). It appears to be a single reviewer's assessment, which might suggest a less rigorous adjudication than a multi-reader consensus.

5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

No, a multi-reader multi-case (MRMC) comparative effectiveness study was not explicitly described or presented in the provided text. The study focused on demonstrating substantial equivalence to a predicate device through technical specifications, bench testing, and a review of clinical images by a practitioner, rather than measuring reader performance with and without AI assistance. The device is an X-ray imaging system, not an AI diagnostic tool that assists human readers.

6. Standalone (i.e., algorithm only without human-in-the-loop performance) Study

Not applicable in the context of an X-ray imaging device. The RCT800 is an imaging system, not an AI algorithm intended for standalone diagnosis. Its performance is evaluated on its ability to produce images of acceptable quality for human interpretation.

7. Type of Ground Truth Used

The ground truth for the clinical images was established by expert judgment/review by "licensed practitioners/clinicians." The practitioners assessed the "acceptable quality for the intended use" of the images. This is not pathology, or direct outcomes data, but rather an assessment of diagnostic utility from the images.

8. Sample Size for the Training Set

The provided text focuses on the performance of the imaging device itself and its comparison to a predicate, not on an AI algorithm that would require a distinct training set. Therefore, a training set sample size is not applicable or mentioned in this context. The "software" mentioned (RAYSCAN) is for viewing and managing images, not for AI-based analysis requiring a training dataset.

9. How Ground Truth for the Training Set Was Established

As no training set for an AI algorithm is mentioned, the method for establishing its ground truth is not applicable or described.

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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA logo on the right. The FDA logo features the letters 'FDA' in a blue square, followed by the words 'U.S. FOOD & DRUG ADMINISTRATION' in blue text.

October 22, 2019

RAY CO., Ltd c/o Changhwan Lee RA Manager 332-7. Samsung 1-ro Hwaseong-si, Gyeonggi-do 18380 REPUBLIC OF KOREA

Re: K192737

Trade/Device Name: RCT800 Regulation Number: 21 CFR 892.1750 Regulation Name: Computed Tomography X-Ray System Regulatory Class: Class II Product Code: OAS Dated: September 25, 2019 Received: September 27, 2019

Dear Changhwan Lee:

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

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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 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 (OS) 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)

K192737

Device Name RCT800

Indications for Use (Describe)

RCT800 is CBCT and panoramic x-ray imaging system with cephalometric.

Which is intended to radiographic examination of the dento-maxillofacial, sinus, TMJ, Airway for diagnostic support for adult and pediatric patients. And a model scan is included as an option.

Cephalometric image is also includes wrist to obtain carpus images for growth and maturity assessment for orthodontic treatment.

The device is to be operated and used by dentists or other legally qualified heath care professionals.

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Type of Use (Select one or both, as applicable)

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510(k) Summary

1. 510(k) Summary

The 510(k) summary of safety and effectiveness information is being submitted in accordance with the requirements of 21 CFR Part 807.92.

    1. Date: September 25, 2019

3. Administrative Information

APPLICANTRAY Co.,Ltd
ADDRESS#332-7, Samsung 1-ro, Hwaseong-si, Gyeonggi-do, 18380, Korea
ManufacturerRAY Co.,Ltd332-7, Samsung 1-ro, Hwaseong-si, Gyeonggi-do, 18380, Korea
TEL : +82-31-605-1000FAX : +82-2-6280-5534
Contact Persone-mail : ch0406.lee@raymedical.co.kr

4. Device Information

Device Name

Trade/Proprietary Name: RCT800 Common Name: Dental panoramic/tomography and cephalometric x-ray system

Classification

Classification Name: Computed tomography x-ray system Regulation Number : 21 CFR 892.1750 Class : Il Product code : OAS Panel : Radiology

5. Predicate device

ParameterPredicate Device-1
Device NameRCT800
ManufacturerRAY Co., Ltd

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510(K) NumberK182805
Classification nameComputed tomography x-ray system
Regulation number892.1750
Primary product codeOAS

7. Device Description

System purpose RCT800 is 3D computed tomography for scanning hard tissues like bone and teeth. By rotating the c-arm which is embedded with high voltage generator all-in-one x-ray tube and a detector on each end, CBCT images of dental maxillofacial is attained by recombining data from the same level that are scanned from different angle.

Panoramic image scanning function for attaining image of whole teeth, cephalometric scanning option for attaining cephalic image, and Model Scan option for attaining dental model CBCT image are included.

8. Indication for use

RCT800 is CBCT and panoramic x-ray imaging system with cephalometric.

Which is intended to radiographic examination of the dento-maxillofacial, sinus, TMJ, Airway for diagnostic support for adult and pediatric patients. And a model scan is included as an option. Cephalometric image is also includes wrist to obtain carpus images for growth and maturity assessment for orthodontic treatment.

The device is to be operated and used by dentists or other legally qualified heath care professionals.

9. Patient population

The patient population can be the possible person who can be taken X-ray diagnostic radiation exposure.

There is no restriction for ethnic group, Gender, weight, health, or condition.

We recommend patients for x-ray diagnostic radiation exposure to be over 5 years old.

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10. Comparison with predicate device

The following table provides the summary of the technological characteristics of RCT800 compared to the predicate device.

ParameterProposed DevicePredicate Device
ManufacturerRAY Co., Ltd.RAY Co., Ltd.
Device nameRCT800RCT800
510(K) Number(Traditional 510K)K182805(Special 510K)
Common NameDental panoramic/tomography and cephalometric x-ray systemDental panoramic/tomography and cephalometric x-ray system
Indications for useRCT800 is CBCT and panoramic x-ray imaging system with cephalometric. Which is intended to radiographic examination of the dento-maxillofacial, sinus, TMJ, Airway for diagnostic support for adult and pediatric patients. And a model scan is included as an option. Cephalometric image is also includes wrist to obtain carpus images for growth and maturity assessment for orthodontic treatment. The device is to be operated and used by dentists or other legally qualified heath care professionals.RCT800 is CBCT and panoramic x-ray imaging system with cephalometric. Which is intended to radiographic examination of the dento-maxillofacial, sinus, TMJ, Airway for diagnostic support for adult and pediatric patients. And a model scan is included as an option. Cephalometric image is also includes wrist to obtain carpus images for growth and maturity assessment for orthodontic treatment. The device is to be operated and used by dentists or other legally qualified heath care professionals.
Mode of OperationSame as predicate device #1Continuous operation with intermittent, stated permissible loading
3D technologySame as predicate device #1CBCT Cone beamComputed Tomography
Performance SpecificationSame as predicate device #11) CBCT Computed tomography- Patient- Dental Model Scan(Optional)2) Panoramic3) Cephalometric(optional)- One shot type- Scan type
Functional OptionSame as predicate device #1BaseCT+PANOOption(CEPH)CT + PANO + SCAN CEPHCT + PANO + One shot(One shot, Standard Type)CT + PANO + One shot(One shot, Large Type).
Detector TypeCTSame as predicate device #1FXDD-0606CA
CTSame as predicate device #1FXDD-1012CHA
PANOSame as predicate device #1FXDD-0606CA
PANOSame as predicate device #1FXDD-1012CHA
Ceph (Scan)Same as predicate device #1XID-C24DC
Exposure switchTypeCeph (One shot)Same as predicate device #11717SCC
Same as predicate device #1PaxScan 2530C
Same as predicate device #1"Deadman" Button type
MainComponentsSame as predicate device #1Ceph Apparatus
Same as predicate device #1Vertical Carriage
Same as predicate device #1Rotator
Same as predicate device #1X-RAY Generator
Same as predicate device #1X-ray tube
Same as predicate device #1High Frequency Generator
Same as predicate device #1Column
Same as predicate device #1Touch monitor (panel)
Same as predicate device #1Detector- CTFXDD-0606CAFXDD-1012CHA- PANOFXDD-0606CAFXDD-1012CHA- CephXID-C24DC(Scan)1717SCC(One shot, Large Size)PaxScan 2530C(One shot, StandardSize)
Same as predicate device #1Chinrest
Same as predicate device #1Head rest
Same as predicate device #1Automatic Collimator
Same as predicate device #1Exposure switch
Same as predicate device #1Emergency stop switch
Same as predicate device #1Console PC set
AutomaticCollimatorSame as predicate device #1CT examsPanoramic examsCephalometric exams
Display TypeSame as predicate device #1TFT LCD type(Normally black)*1280x800 pixel
ClassSame as predicate device #1Class I with type B applied partsaccording to IEC 60601-1
Focal sizeSame as predicate device #1Patient 0.5Model scan 0.04 (Optional)
Field ofView(CT)Same as predicate device #1FXDD-0606CA : Max.160x100 mmFXDD-1012CHA : Max. 200x200 mm
X-ray Voltage(Patient)60~100kVp60~90kVp
X-ray Current(Patient)Same as predicate device #14~17mA
X-ray Voltage(Model Scan, Optional)Same as predicate device #150~80kVp
X-ray Current(Model Scan, Optional)Same as predicate device #10.4~0.7mA
Total FiltrationSame as predicate device #1Min. 2.8 mm Al equivalent
DetectorPixel sizeCTSame as predicate device #1FXDD-0606CA: 119µm
CTSame as predicate device #1FXDD-1012CHA: 124µm
PANOSame as predicate device #1FXDD-0606CA: 119µm
PANOSame as predicate device #1FXDD-1012CHA: 124µm
Ceph (Scan)Same as predicate device #1XID-C24DC: 100µm
Ceph(One shot)Same as predicate device #11717SCC: 127µm
Ceph(One shot)Same as predicate device #1PaxScan 2530C: 139µm
MagnificationCTSame as predicate device #1FXDD-0606CA: 1.44(Patient)1.91(Model Scan)
CTSame as predicate device #1FXDD-1012CHA: 1.44(Patient)1.91(Model Scan)
PANOSame as predicate device #1FXDD-0606CA: 1.3
PANOSame as predicate device #1FXDD-1012CHA: 1.3
Ceph (Scan)Same as predicate device #1XID-C24DC: 1.11
Ceph(One shot)Same as predicate device #11717SCC: 1.13
Ceph(One shot)Same as predicate device #1PaxScan 2530C: 1.12
Scan timeCT : below 20sec(Patient)CT : below 180sec(Model Scan)CT : below 14sec(Patient)CT : below 180sec(Model Scan)
Same as predicate device #1Pano : below 14sec
Ceph[Scan type] : below 20secCeph[Scan type] : below 19sec
Same as predicate device #1Ceph[One shot type]:below 2sec
Format compatibleSame as predicate device #1DICOM 3.0 Format compatible
Image Viewing SoftwareSame as predicate device #1RayScan(Cleared under K182805)
Image acquisitionSame as predicate device #1Giga-Ethernet Network
Total HeightSame as predicate device #1Max 2.296mm
WeightSame as predicate device #11) Computed Tomography(CT) +Panoramic(PANO)=189kg(416.6lb) ±10%2) Computed Tomography(CT) +Panoramic(PANO) + Ceph(Scan type)= 219kg (482.8lb) ± 10%3) Computed Tomography(CT) +Panoramic(PANO) + Ceph(One shot type, installed in Standardsize)= 217kg (478.4lb) ± 10%4) Computed Tomography(CT) +Panoramic(PANO) + Ceph(One shot type, installed in Large size)212kg (467.3lb) ± 10%
Type ofinstallationSame as predicate device #1Wall or floor mount
Patient positionSame as predicate device #1Standing / Wheelchair
ApplicableStandardsSame as predicate device #1IEC 60601-1IEC 60601-1-3IEC 60601-2-63IEC 60601-1-2

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RAY Co., Ltd.

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The product is principally just the same as in the previous 510(k) #K182805.

The complete of differences of the subject device to the predicate device is as follows

  • The maximum X-ray voltage of the tube has been changed from 90kV to 100kV. -
  • -The irradiation time of CT and Scan Ceph has been changed.
  • -Face Scan mode has been added in option. Face Scan is 3D Face Photo to capture 3D facial picture to visualize soft tissue. This is the same feature as CS Face Scan on the CS 9600 (K118136) and ProFace on the Planmeca ProMax 3D Max (K160506).

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12. Safety and Effectiveness Information

RCT800 system described in this 510(k) is similar to the predicate device in terms of indications for use, materials, safety characteristics, and X-ray source.

The following information further substantial equivalence between the subject device and predicate device.

The fundamental technological characteristics of the subject and predicate device are similar.

The imaging modes are similar; PANO, CEPH (Optional), CBCT, Model Scan All viewing software programs have been cleared with previous 510k submissions; RAYSCAN(K182805).

The sponsor tested the subject device in a laboratory and provided a non-clinical performance report. The same test protocol was used to test the performance of the subject and the predicate device for comparison. The sponsor certifies that adequate design and development controls (according to 21 CFR 820.30) were in place for manufacturing the subject device.

The differences are as follows.

  • -The maximum X-ray voltage of the tube has been changed from 90kV to 100kV.
  • -The irradiation time of CT and Scan Ceph has been changed.

Electrical, mechanical and environmental safety testing according to standard of IEC 60601-1: 2005/AMD1:2012(3.1 Edition), IEC 60601-1-3: 2008/AMD1:2013(Second Edition), IEC 60601-1-6:2010(Third Edition) and IEC 60601-2-63: 2012(first Edition) were performed. EMC testing was conducted in accordance with the standard IEC 60601-1-2: 2014(Edition 4.0).

The software of RCT800 saves the patient and image data and offers an inquiry function, in addition, supports the image generate function intended to obtain images using the RCT800 equipment and various sensors for diagnosis. And that has been validated according to FDA "Guidance for the Content d Premarket Submissions for Software Contained in Medical Devices" and "Content of Premarket Submissions for Management of Cybersecurity in Medical Devices" to assure substantial equivalence. The software for this device was considered as a "moderate" level of concern, since a failure or latent flaw in the software would not directly result in serious injury or death to the patient or operator. As a result, we identified the level of concern associated with new device and provided documentation consistent with that level. Based on our risk analysis of software, the difference does not affect its safety and effectiveness.

Bench testing was conducted according to FDA Guidance "Format for Traditional and Abbreviated 510(k)s, section 18, Performance Testing - Bench"

Bench testing is used to assess whether or not the parameter measured required for describing functionalities related to imaging properties of the dental X-ray device and patient dosage satisfies the designated tolerance.

Performance (Imaging performance) testing was conducted according to standard of IEC 61223-3-4 and IEC 61223-3-5.

All test results were satisfactory.

Non-clinical considerations were conducted in accordance with FDA Guidance for the submissions of 510(k)'s for Solid State X-ray Imaging Devices". Because the subject device used the same detector as the predicate device, there is no significant difference between the two devices as a result of non-clinical testing.

Clinical considerations were conducted according to FDA Guidance "Format for Traditional and Abbreviated 510(k)s, section 20".

RAY Co., Ltd.

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Clinical images were provided these images were not necessary to establish substantial equivalence based on the modifications to the device but they provide further evidence in addition to the laboratory performance data to show that the complete system works as intended.

The features of RCT800 have been clinically tested and approved by two licensed practitioners/ clinicians.

The clinical imaging samples are collected from the all detector on propose device at the 2 offices where the predicate device is installed on clinical consideration report for the clinical test images. These images were gathered from the all detector installed with RCT800 on any protocols with random patient age, gender, and size. A licensed practitioner reviewed the sample clinical images and found them to be of acceptable quality for the intended use.

12. Conclusions

In accordance with the Federal Food, Drug and Cosmetic Act, 21 CFR Part 807 and based on the information provided in this premarket notification. RAY Co., Ltd. concludes that the newly RCT800 is safe and effective and substantially equivalent to predicate device as described herein.

§ 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.