Comparisons of coded aperture imaging using various apertures and decoding methods. [gamma camera imaging of radionuclides in tissues]

Conference · Thu Jul 01 00:00:00 EDT 1976

OSTI ID:7245645

Chang, L T; Macdonald, B; Perez-Mendez, V

The utility of coded aperture ..gamma.. camera imaging of radioisotope distributions in Nuclear Medicine is in its ability to give depth information about a three dimensional source. We have calculated imaging with Fresnel zone plate and multiple pinhole apertures to produce coded shadows and reconstruction of these shadows using correlation, Fresnel diffraction, and Fourier transform deconvolution. Comparisons of the coded apertures and decoding methods are made by evaluating their point response functions both for in-focus and out-of-focus image planes. Background averages and standard deviations were calculated. In some cases, background subtraction was made using combinations of two complementary apertures. Results using deconvolution reconstruction for finite numbers of events are also given.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7245645
• Report Number(s): LBL-5342; CONF-760832-4
• Country of Publication: United States
• Language: English

Related Subjects

440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
CAMERAS
COUNTING TECHNIQUES
DATA ANALYSIS
DIAGNOSTIC TECHNIQUES
DISTRIBUTION
DRUGS
GAMMA CAMERAS
IMAGES
LABELLED COMPOUNDS
MEDICINE
NUCLEAR MEDICINE
PATIENTS
RADIOACTIVE MATERIALS
RADIOISOTOPE SCANNING
RADIONUCLIDE ADMINISTRATION
RADIOPHARMACEUTICALS
SCINTISCANNING
TISSUE DISTRIBUTION