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Result : Searchterm 'Receiver Coil' found in 1 term [] and 12 definitions [], (+ 9 Boolean[] results
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The company is a leading manufacturer and developer of magnetic resonance imaging ( MRI) scanners.
The Patient Friendly MRI Company, formed in 1978, is engaged in the business of inventing, manufacturing, selling and servicing magnetic resonance imaging ( MRI) scanners. FONAR is the oldest MRI company in the world. After receiving hundreds of millions in a windfall from protecting their MRI patents, they made a MRI scanner that no other MRI manufacturer has. One that the patient stands in and they call Indomitable, the Stand-Up MRI. Patients like it because it is the least claustrophobic, most comfortable MRI on the market. Doctors like it because of its superior image quality and for the first time, the patient can be scanned in the weight-bearing position, or the position of pain or symptom. In October of 2004, the company changed the product name of the Stand-Up MRI to the Upright MRI. Fonar introduced the first "open" MRI scanner in 1980 and is the originator of the iron-core nonsuperconductive and permanent magnet technology.
MRI Scanners:
- 0.6T:
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QUAD™ 12000 - Its 19-inch gap and Whisper Gradients™ make it extraordinarily spacious, quiet and comfortable. With its signal to noise advantage of 0.6 T and its comprehensive array of Organ-Specific™ receiver coils, the QUAD™ 12000 provides high-speed, high resolution and high contrast scanning.
Product Specification
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OR 360°™ - cleared for marketing by the FDA in March 2000, 360° access to the patient. A dual-purpose scanner, it can be used for conventional diagnostic scanning when not in surgical mode.
Product Specification
Contact Information
MAIL
FONAR Corporation
110 Marcus Drive
Melville, N.Y. 11747
USA
| | | | • View the DATABASE results for 'FONAR Corporation' (3).
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An undesirable background interference or disturbance that affects image quality.
The Noise is commonly characterized by the standard deviation of signal intensity in the image of a uniform object ( phantom) in the absence of artifacts. The measured noise may depend on the particular phantom used due to variable effects on the Q of the receiver coil. Noisy images appear when the SNR-Rate is too low - this is induced by the operator.
Image artifacts and RF noise can often be caused by the presence and/or operation of a medical device in the MR environment.
There are various noise sources in any electronic system, including Johnson noise, shot noise, thermal noise. Materials produce their own characteristic static magnetic field that can perturb the relationship between position and frequency essential to accurate image reconstruction.
RF noise, which often appears as static on the image, can be caused by a medical device located anywhere in the MR procedure room. RF noise is a result of excessive electromagnetic emissions from the medical device that interfere with the proper operation of the MR scanner. Since the MR procedure room is shielded from extraneous RF fields entering the room ( Faraday cage), operation of electromagnetically noisy equipment outside the room does not typically affect the MR scanner.
See Signal to Noise Ratio and Radio Frequency Noise Artifact. | | | | • View the DATABASE results for 'Noise' (86).
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