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Title: Performance characteristics of newly developed whole-body multislice positron computed tomograph

Abstract

The authors have constructed a whole-body multislice positron computed tomograph based on ''positology''. This machine has four continuously rotating detector rings with 192 BGO crystals (12 x 24 x 24mm), which are unequally arranged around each ring. Images of 7 slices at 16mm intervals can be obtained. The signals are transferred to the stationary part through photo-coupling system. The patient aperture is 54cm in diameter, and the field of view is 40cm in diameter and 12cm in depth, making it possible to take images of the whole heart at one scan. The sensitivity measured with 20cm diameter cylindrical phantom is 34.2 and 52.2 kcps/..mu..Ci/ml for in-plane and cross-plane respectively, including scattered coincidence. This high sensitivity enables the authors to make dynamic images of the heart following bolus injection of N-13 labeled ammonia, as well as wash-out dynamic images of the lungs following equilibration with N-13 labeled nitrogen gas. Spatial resolutions (FWHM) for in-plane measured with 1mm diameter Ga-68 line source in air is 7.6mm at the center of the field and 8.7mm at 20cm apart from the center. Axial resolution (FWHM) is 12mm at the center of the field. It can clearly delineate hot-spot images of Derenzo phantom of 3.0mmmore » in diameter. The authors' can also visualize fine structures in clinical studies such as papillary muscle of the heart. Thus the machine is extremely useful for all sorts of clinical studies using positron emitters.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Kyoto Univ., Kyoto
OSTI Identifier:
6843434
Report Number(s):
CONF-840619-
Journal ID: CODEN: JNMEA; TRN: 87-008888
Resource Type:
Conference
Journal Name:
J. Nucl. Med.; (United States)
Additional Journal Information:
Journal Volume: 25:5; Conference: 31. annual meeting of the Society of Nuclear Medicine, Los Angeles, CA, USA, 5 Jun 1984
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; HEART; POSITRON COMPUTED TOMOGRAPHY; LUNGS; BGO DETECTORS; AMMONIA; APERTURES; COINCIDENCE METHODS; DEPTH; HOT SPOTS; IMAGES; LABELLED COMPOUNDS; NITROGEN 13; PATIENTS; PHANTOMS; ROTATION; SENSITIVITY ANALYSIS; SIGNALS; SPATIAL RESOLUTION; WHOLE-BODY IRRADIATION; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BODY; CARDIOVASCULAR SYSTEM; COMPUTERIZED TOMOGRAPHY; COUNTING TECHNIQUES; DIAGNOSTIC TECHNIQUES; DIMENSIONS; ELECTRON CAPTURE RADIOISOTOPES; EMISSION COMPUTED TOMOGRAPHY; EXTERNAL IRRADIATION; HYDRIDES; HYDROGEN COMPOUNDS; IRRADIATION; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; MINUTES LIVING RADIOISOTOPES; MOCKUP; MOTION; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; NITROGEN ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; OPENINGS; ORGANS; RADIATION DETECTORS; RADIOISOTOPES; RESOLUTION; RESPIRATORY SYSTEM; SCINTILLATION COUNTERS; SOLID SCINTILLATION DETECTORS; STRUCTURAL MODELS; TOMOGRAPHY; 550602* - Medicine- External Radiation in Diagnostics- (1980-)

Citation Formats

Senda, M, Tamaki, N, Yonekura, Y, Tanada, S, Nishimura, K, Murata, K, Fujita, T, Konishi, J, Torizuka, K, and Tanaka, E. Performance characteristics of newly developed whole-body multislice positron computed tomograph. United States: N. p., 1984. Web.
Senda, M, Tamaki, N, Yonekura, Y, Tanada, S, Nishimura, K, Murata, K, Fujita, T, Konishi, J, Torizuka, K, & Tanaka, E. Performance characteristics of newly developed whole-body multislice positron computed tomograph. United States.
Senda, M, Tamaki, N, Yonekura, Y, Tanada, S, Nishimura, K, Murata, K, Fujita, T, Konishi, J, Torizuka, K, and Tanaka, E. Sun . "Performance characteristics of newly developed whole-body multislice positron computed tomograph". United States.
@article{osti_6843434,
title = {Performance characteristics of newly developed whole-body multislice positron computed tomograph},
author = {Senda, M and Tamaki, N and Yonekura, Y and Tanada, S and Nishimura, K and Murata, K and Fujita, T and Konishi, J and Torizuka, K and Tanaka, E},
abstractNote = {The authors have constructed a whole-body multislice positron computed tomograph based on ''positology''. This machine has four continuously rotating detector rings with 192 BGO crystals (12 x 24 x 24mm), which are unequally arranged around each ring. Images of 7 slices at 16mm intervals can be obtained. The signals are transferred to the stationary part through photo-coupling system. The patient aperture is 54cm in diameter, and the field of view is 40cm in diameter and 12cm in depth, making it possible to take images of the whole heart at one scan. The sensitivity measured with 20cm diameter cylindrical phantom is 34.2 and 52.2 kcps/..mu..Ci/ml for in-plane and cross-plane respectively, including scattered coincidence. This high sensitivity enables the authors to make dynamic images of the heart following bolus injection of N-13 labeled ammonia, as well as wash-out dynamic images of the lungs following equilibration with N-13 labeled nitrogen gas. Spatial resolutions (FWHM) for in-plane measured with 1mm diameter Ga-68 line source in air is 7.6mm at the center of the field and 8.7mm at 20cm apart from the center. Axial resolution (FWHM) is 12mm at the center of the field. It can clearly delineate hot-spot images of Derenzo phantom of 3.0mm in diameter. The authors' can also visualize fine structures in clinical studies such as papillary muscle of the heart. Thus the machine is extremely useful for all sorts of clinical studies using positron emitters.},
doi = {},
journal = {J. Nucl. Med.; (United States)},
number = ,
volume = 25:5,
place = {United States},
year = {1984},
month = {1}
}

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