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ECG-gated myocardial tomo-scintigraphy by rotating bilateral collimator. Clinical application and artificial defect

Journal Article:

Abstract

Tomo-scintigraphy of /sup 201/Tl-myocardium by rotating bilateral collimator was performed in synchronization with cardiac cycle. Ten frames per R-R interval were acquired with ECG pulse signal during 16 min and tomographic reconstruction of end-diastolic and end-systolic image was done. This method was very useful to estimate not only three dimensional distribution of Tl-201, but also wall motion and change of wall thickness during cardiac cycle. However, through its clinical application, artificial defect was frequently noticed at inferior-apical portion of the myocardium. In order to elucidate the cause of the artifact, influence of tilted projection and cardiac motion due to respiratory was also investigated. During inspiratory phase of patients in rest, increment of volume up to 40% and 15 mm of caudal deviation of the left ventricle were observed. Furthermore, periodic motion of the diaphragm interrupted emission of gamma ray from the myocardium. It is proved that main cause of the artifact was not tilting projection, but these influence of respiratory motion.
Authors:
Komatani, Akio; Takahashi, Kazuei; Takanashi, Toshiyasu; Yamaguchi, Koichi [1] 
  1. Yamagata Univ. (Japan)
Publication Date:
Jan 01, 1985
Product Type:
Journal Article
Reference Number:
AIX-16-074974; EDB-85-185811
Resource Relation:
Journal Name: Kaku Igaku; (Japan); Journal Volume: 22:1
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; MYOCARDIUM; DYNAMIC FUNCTION STUDIES; SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY; THALLIUM 201; DIAGNOSTIC USES; COLLIMATORS; ELECTROCARDIOGRAMS; IMAGE PROCESSING; IMAGES; PHANTOMS; SPATIAL RESOLUTION; TIME DEPENDENCE; BETA DECAY RADIOISOTOPES; BODY; CARDIOVASCULAR SYSTEM; COMPUTERIZED TOMOGRAPHY; DAYS LIVING RADIOISOTOPES; DIAGNOSTIC TECHNIQUES; DIAGRAMS; ELECTRON CAPTURE RADIOISOTOPES; EMISSION COMPUTED TOMOGRAPHY; HEART; HEAVY NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MOCKUP; MUSCLES; NUCLEI; ODD-EVEN NUCLEI; ORGANS; PROCESSING; RADIOISOTOPES; RESOLUTION; SECONDS LIVING RADIOISOTOPES; STRUCTURAL MODELS; THALLIUM ISOTOPES; TOMOGRAPHY; USES; 550601* - Medicine- Unsealed Radionuclides in Diagnostics
OSTI ID:
5029665
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: KAIGB
Submitting Site:
HEDB
Size:
Pages: 43-48
Announcement Date:

Journal Article:

Citation Formats

Komatani, Akio, Takahashi, Kazuei, Takanashi, Toshiyasu, and Yamaguchi, Koichi. ECG-gated myocardial tomo-scintigraphy by rotating bilateral collimator. Clinical application and artificial defect. Japan: N. p., 1985. Web.
Komatani, Akio, Takahashi, Kazuei, Takanashi, Toshiyasu, & Yamaguchi, Koichi. ECG-gated myocardial tomo-scintigraphy by rotating bilateral collimator. Clinical application and artificial defect. Japan.
Komatani, Akio, Takahashi, Kazuei, Takanashi, Toshiyasu, and Yamaguchi, Koichi. 1985. "ECG-gated myocardial tomo-scintigraphy by rotating bilateral collimator. Clinical application and artificial defect." Japan.
@misc{etde_5029665,
title = {ECG-gated myocardial tomo-scintigraphy by rotating bilateral collimator. Clinical application and artificial defect}
author = {Komatani, Akio, Takahashi, Kazuei, Takanashi, Toshiyasu, and Yamaguchi, Koichi}
abstractNote = {Tomo-scintigraphy of /sup 201/Tl-myocardium by rotating bilateral collimator was performed in synchronization with cardiac cycle. Ten frames per R-R interval were acquired with ECG pulse signal during 16 min and tomographic reconstruction of end-diastolic and end-systolic image was done. This method was very useful to estimate not only three dimensional distribution of Tl-201, but also wall motion and change of wall thickness during cardiac cycle. However, through its clinical application, artificial defect was frequently noticed at inferior-apical portion of the myocardium. In order to elucidate the cause of the artifact, influence of tilted projection and cardiac motion due to respiratory was also investigated. During inspiratory phase of patients in rest, increment of volume up to 40% and 15 mm of caudal deviation of the left ventricle were observed. Furthermore, periodic motion of the diaphragm interrupted emission of gamma ray from the myocardium. It is proved that main cause of the artifact was not tilting projection, but these influence of respiratory motion.}
journal = {Kaku Igaku; (Japan)}
volume = {22:1}
journal type = {AC}
place = {Japan}
year = {1985}
month = {Jan}
}