Method of three-dimensional NMR imaging using selective excitation

Patent · Tue Feb 14 04:00:00 EST 1984

OSTI ID:7055985

Edelstein, W A; Bottomley, P A

Selective excitation is used to define a thick planar slab of excited nuclear spins in a nuclear magnetic resonance (NMR) imaging sample. The thick slab is selected such that the excited spins are contained well within the optimum sensitive region defined by the radio frequency (RF) transmitter and receiver coils. Three-dimensional spatial information of an NMR imaging parameter, such as nuclear spin density or nuclear spin relaxation time, is collected simultaneously from the excited slab and can be used to construct a series of several tomographic section images of the slab. The spatial information is encoded in the NMR signal by application of pulsed gradient magnetic fields subsequent to excitation. Image picture information is obtained from the NMR signals via three-dimensional Fourier transformation.

• Assignee: General Electric Company
• Patent Number(s): US 4431968
• OSTI ID: 7055985
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
ANGULAR MOMENTUM
COMPUTERIZED TOMOGRAPHY
DATA ACQUISITION
DIAGNOSTIC TECHNIQUES
DIGITAL CIRCUITS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FOURIER TRANSFORMATION
FREQUENCY SELECTION
IMAGE PROCESSING
INTEGRAL TRANSFORMATIONS
MAGNET COILS
MAGNETIC FIELDS
MAGNETIC RESONANCE
NUCLEAR MAGNETIC RESONANCE
ORIENTATION
PARTICLE PROPERTIES
PROCESSING
PULSE TECHNIQUES
QUADRATURES
RADIO EQUIPMENT
RELAXATION
RESOLUTION
RESONANCE
SENSITIVITY
SPATIAL RESOLUTION
SPIN
SPIN ORIENTATION
THREE-DIMENSIONAL CALCULATIONS
TOMOGRAPHY
TRANSFORMATIONS