Published August 21, 1979 | Version v1
Patent Open

Variable code gamma ray imaging system

Creators

Description

A gamma-ray source distribution in the body is imaged onto a detector using an array of apertures. The transmission of each aperture is modulated using a code such that the individual views of the source through each aperture can be decoded and separated. The codes are chosen to maximize the signal to noise ratio for each source distribution. These codes determine the photon collection efficiency of the aperture array. Planar arrays are used for volumetric reconstructions and circular arrays for cross-sectional reconstructions. 14 claims

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Additional titles

Augmented title (English)
Patent

Publishing Information

Imprint Pagination
10 p.
IPC:
Int. Cl.G01T1/20.
IPC
Int. Cl.G01T1/20.
Patent number
US patent document 4,165,462/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
11531644
Subject category
S62: RADIOLOGY AND NUCLEAR MEDICINE;
Descriptors DEI
APERTURES; BIOMEDICAL RADIOGRAPHY; GAMMA SOURCES; IMAGES; NOISE; NUCLEAR MEDICINE; PHOTONS; SPECIFICATIONS; TOMOGRAPHY
Descriptors DEC
DIAGNOSTIC TECHNIQUES; ELEMENTARY PARTICLES; MASSLESS PARTICLES; MEDICINE; OPENINGS; RADIATION SOURCES