EXTRA LARGE BODY COIL FOR OPART (MRT-600)

K991057 · Toshiba America Mri, Inc. · MOS · May 20, 1999 · Radiology

Device Facts

• Record ID: K991057
• Device Name: EXTRA LARGE BODY COIL FOR OPART (MRT-600)
• Applicant: Toshiba America Mri, Inc.
• Product Code: MOS · Radiology
• Decision Date: May 20, 1999
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 892.1000
• Device Class: Class 2

Intended Use

Anatomical regions: Head, body, extremity, spine, neck, TMJ, breast, and heart Hydrogen Nuclei excited: Diagnostic imaging of the human body (including head, abdomen, Diagnostic use: breast, heart, pelvis, spine, blood vessels, limbs, and extremities), fluid visualization, 2D and 3D imaging, MR angiography and MR fluoroscopy.

Device Story

Extra Large Body coil accessory for OPART™ MRI system; designed to accommodate larger patients. Device functions as RF receive coil; used standalone or with T-spine surface coil (QD mode). Operates within 0.35T static magnetic field. Used in clinical radiology settings by trained MRI technologists/physicians. Provides signal input to MRI system for image reconstruction; assists clinicians in visualizing anatomical structures and pathology. Benefits include expanded patient access to MRI diagnostics for larger individuals.

Clinical Evidence

Bench testing only. Provided sample phantom images and clinical images to demonstrate imaging performance.

Technological Characteristics

RF receive coil for 0.35T MRI system. Constructed with same materials as existing OPART™ coil set. Supports QD mode when used with T-spine surface coil. Maximum static field 0.35T; dB/dt 19T/s; SAR <0.4 W/kg; acoustic noise 98.4 dB(A).

Indications for Use

Indicated for diagnostic imaging of the human body, including head, abdomen, breast, heart, pelvis, spine, blood vessels, limbs, and extremities. Supports fluid visualization, 2D/3D imaging, MR angiography, MR fluoroscopy, MRCP, MR urography, MR myelography, surface anatomy scans, dynamic scans, and cine imaging.

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.

Predicate Devices

• OPART™ Large Body Coil (K962933)

Submission Summary (Full Text)

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K99/057

## 510(k) Premarket Notification

# SUMMARY OF SAFETY AND EFFECTIVENESS

| 1. DEVICE NAME: | Magnetic Resonance Diagnostic Device Accessory |
|-------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Model Number: | MRT-600 |
| Trade/Proprietary Name: | OPART™ |
| 2. ESTABLISHMENT REGISTRATION: | 2636923 |
| 3. U.S. AGENT NAME AND ADDRESS: | Toshiba America MRI, Inc.<br>280 Utah Avenue<br>South San Francisco, CA 94080 |
| CONTACT PERSON: | Ken Nehmer<br>[phone] ext. 6083 |
| 4. MANUFACTURING SITE: | same as above |
| 5. DATE OF SUBMISSION: | March 29, 1999 |
| 6. DEVICE DESCRIPTION: | The Extra Large Body coil is an enlarged version of the current OPART™ Large Body Coil. This coil is an optional coil which was developed to allow positioning of larger sized patients in the OPART™ system. The Extra Large Body coil can be used as a standalone coil, or in conjunction with the T-spine surface coil (cleared with OPART™ system K962933). Signal is received in QD mode when used in conjunction with the T-spine surface coil.<br>The Extra Large Body Coil is constructed with the same materials that are currently in use for the released coil set for OPART™. |
| 7. SAFETY PARAMETERS: | |
| Maximum static field strength: | 0.35 Tesla |
| Rate of change of magnetic field: | 19T/second |
| Maximum radio frequency power deposition (SAR): | <0.4 Watt/kg |
| Acoustic noise levels (maximum): | 98.4 dB (A) |
| 8. IMAGING PERFORMANCE PARAMETERS: | |
| Specification volume: | |
| Head: | 10cm dsv |
| Body: | 20cm dsv |

Sample phantom images and clinical images are presented from the Extra Large Body coil (Appendix 5 & 6).

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#### INTENDED USE 9.

Anatomical regions: Head, body, extremity, spine, neck, TMJ, breast, and heart Hydrogen Nuclei excited: Diagnostic imaging of the human body (including head, abdomen, Diagnostic use: breast, heart, pelvis, spine, blood vessels, limbs, and extremities), fluid visualization, 2D and 3D imaging, MR angiography and MR fluoroscopy.

#### 10. EQUIVALENCY INFORMATION:

Toshiba America MRI, Inc., believes that the Extra Large Body Coil option for OPART™ system is substantially equivalent to the current Large Body Coil which was cleared with the OPART™ diagnostic resonance system 510(k) number K962933.

This optional coil does not introduce any new indications for use from those cleared in the Premarket Notification for OPART™ diagnostic resonance system 510(k) number K962933.

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### DEPARTMENT OF HEALTH & HUMAN SERVICES

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

Ken Nehmer Quality Engineer Toshiba America MRI, Inc. 280 Utah Avenue South San Francisco, California 94080

2 U

RE:

K991057 Body Coil for OPART (Model MRT-600) Dated: March 29, 1999 Received: March 30, 1999 Regulatory Class: II 21 CFR 892.1000/Procode: 90 MOS

Dar Mr. Nehmer:

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 redassified 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 III (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 requirement 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 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 [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. 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 [phone] or [phone], or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".

Sincerely yours,
Dan Letizia

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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IV

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510(k) Number (if known):

K991057

Device Name:

: 上一

Extra Large Body Coil for OPART™ (MRT-600) ___________________________________________________________________________________________________________________________________

Indications for Use:

Imaging of:

- -The Whole Body (including head, abdomen, breast, pelvis, limbs and extremities, spine, neck, TMJ, heart, blood vessels). [Application terms include MRCP (MR Cholangiopancreatography), MR Urography, MR Myelography, MR Fluoroscopy, SAS (Surface Anatomy Scan), Dynamic Scan and Cine Imaging.]
- Fluid Visualization -
- -2D/3D Imaging
- MR Angiography/MR Vascular Imaging -

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

Concurrence of CDRH, Office of Device Evaluation (ODE)

| Prescription Use | X | OR | Over-The-Counter Use |
|--------------------------|-------------------------------------------|----|--------------------------|
| (Per 21 CFR§801.109) | | | (Optional Format 1-2-96) |
| | (Division Sign-Off) | | |
| | Division of Reproductive, Abdominal, ENT, | | |
| 510(k) Number | K991057 | | |
| and Radiological Devices | | | |

CONFIDENTIAL