Loop-gap resonator for localized NMR imaging

Patent · Tue Feb 09 04:00:00 EST 1988

OSTI ID:5322595

Hyde, J S; Froncisz, W; Jesmanowicz, A

In an NMR scanner for producing images for FID signals emanating from a subject which is irradiated with an excitation field in the presence of a polarizing magnetic field, a local probe for receiving the FID signals emanating from a region of interest in the subject is described which comprises: a pair of loop-gap resonators, each loop-gap resonator being placed adjacent to the region of interest; connection means for electrically connecting the loop-gap resonators together at their respective gaps to suppress a resonance mode characterized by separate, unlinked magnetic flux paths in the two loop-gap resonators, and to support a resonance mode characterized by a magnetic flux path which links the two loop-gap resonators and which resonates at the frequency of the FID signals; and conductive means positioned adjacent the pair of loop-gap resonators for receiving the FID signals emanating from the region of interest.

• Assignee: Medical College of Wisconsin, Inc., Milwaukee, WI
• Patent Number(s): US 4724389
• OSTI ID: 5322595
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
550600 -- Medicine
62 RADIOLOGY AND NUCLEAR MEDICINE
BIOMEDICAL RADIOGRAPHY
DESIGN
DIAGNOSTIC TECHNIQUES
ELECTRONIC EQUIPMENT
EQUIPMENT
IMAGE PROCESSING
IMAGE SCANNERS
IRRADIATION
MAGNETIC FIELDS
MAGNETIC RESONANCE
MEDICINE
NUCLEAR MAGNETIC RESONANCE
NUCLEAR MEDICINE
OPERATION
PROBES
PROCESSING
RADIOLOGY
RESONANCE
RESONATORS
SIGNAL CONDITIONING