Using simultaneous transmission and scatter SPECT imaging from external sources for the determination of the thoracic [mu]-map

Conference · Mon Aug 01 04:00:00 EDT 1994 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6838592

Loncaric, S; Chang, W; Huang, G ^[1]

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1. Rush Presbyterian-St. Luke's Medical Center, Chicago, IL (United States)

The authors describe a new technique that uses simultaneous transmission and scatter SPECT imaging for determination of segmented attenuation [mu]-maps. These [mu]-maps could provide the basis for attenuation correction and quantification of radiopharmaceutical uptake in cardiac SPECT. For transmission imaging, a line source and a fan-beam collimator on one head of a triple-head SPECT system are used. For scatter imaging, two external ring sources and parallel collimators on one or two of the other heads are used. The fan-beam transmission data are truncated, while the parallel-beam data are not. The proposed technique uses both sets of tomographic data to complement each other and to obtain a composite image. A [mu]-map with three segmented regions of distinct [mu]-values could be derived from the composite image. This final [mu]-map can then be used as the basis for attenuation correction.

• OSTI ID: 6838592
• Report Number(s): CONF-931051--
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 41:4PT1
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BODY
BODY AREAS
CARDIOVASCULAR SYSTEM
CHEST
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
HEART
IMAGE PROCESSING
OPTIMIZATION
ORGANS
PROCESSING
RADIATION SOURCES
RESOLUTION
SCATTERING
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
SPATIAL RESOLUTION
TOMOGRAPHY