Published June 1990 | Version v1
Journal article Metadata-only

Attenuation correction for SPECT of regional brain perfusion using 99mTc-HMPAO

Creators

  • 1. Showa Univ. Fujigaoka Hospital, Yokohama (Japan)

Description

Attenuation correction for single photon emission computed tomography (SPECT) of regional brain perfusion is investigated by simulation study. 99mTc-HMPAO has a tendency to accumulate on not only brain but also on scalp. Therefore, the distribution of skull is simultaneously obtained in SPECT study without transmission CT study. Using the distribution of skull, an observed projection with nonuniform attenuators including soft tissue and skull is approximately transformed to the projection with soft tissue alone. Then, conventional attenuation correction method assuming uniform attenuation is applied to the transformed projection. The accuracy of reconstructed density by this method is evaluated. (author)

Additional details

Publishing Information

Journal Title
Medical Imaging Technology
Journal Volume
8
Journal Issue
2
Series
Med. Imag. Technol.
Journal Page Range
100-109
ISSN
0288-450X
CODEN
MITEE

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
22009192
Subject category
S62: RADIOLOGY AND NUCLEAR MEDICINE;
Descriptors DEI
ATTENUATION; BLOOD FLOW; BRAIN; COMPUTERIZED SIMULATION; CORRECTIONS; OXIMES; PHANTOMS; SINGLE PHOTON ECT; SKULL; TECHNETIUM 99
Descriptors DEC
AMINES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; CENTRAL NERVOUS SYSTEM; COMPUTERIZED TOMOGRAPHY; EMISSION COMPUTED TOMOGRAPHY; HOURS LIVING RADIOISOTOPES; HYDROXY COMPOUNDS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MOCKUP; NERVOUS SYSTEM; NUCLEI; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANS; RADIOISOTOPES; SIMULATION; SKELETON; STRUCTURAL MODELS; TECHNETIUM ISOTOPES; TOMOGRAPHY; YEARS LIVING RADIOISOTOPES