You need JavaScript to view this

Attenuation correction method for single photon emission CT

Journal Article:

Abstract

A correction method (Modified Correction Matrix method) is proposed to implement iterative correction by exactly measuring attenuation constant distribution in a test body, calculating a correction factor for every picture element, then multiply the image by these factors. Computer simulation for the comparison of the results showed that the proposed method was specifically more effective to an application to the test body, in which the rate of attenuation constant change is large, than the conventional correction matrix method. Since the actual measurement data always contain quantum noise, the noise was taken into account in the simulation. However, the correction effect was large even under the noise. For verifying its clinical effectiveness, the experiment using an acrylic phantom was also carried out. As the result, the recovery of image quality in the parts with small attenuation constant was remarkable as compared with the conventional method.
Authors:
Morozumi, Tatsuru; Nakajima, Masato; [1]  Ogawa, Koichi; Yuta, Shinichi
  1. Keio Univ., Yokohama (Japan). Faculty of Science and Technology
Publication Date:
Oct 01, 1983
Product Type:
Journal Article
Reference Number:
AIX-16-003364; EDB-85-039938
Resource Relation:
Journal Name: Denshi Tsushin Gakkai Rombunshi, Part D; (Japan); Journal Volume: 66:10
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; SINGLE PHOTON EMISSION COMPUTED T; ATTENUATION; COMPUTERIZED SIMULATION; GAMMA RADIATION; NOISE; PHANTOMS; COMPUTERIZED TOMOGRAPHY; DIAGNOSTIC TECHNIQUES; ELECTROMAGNETIC RADIATION; EMISSION COMPUTED TOMOGRAPHY; IONIZING RADIATIONS; MOCKUP; PROCESSING; RADIATIONS; SIMULATION; STRUCTURAL MODELS; TOMOGRAPHY; 550601* - Medicine- Unsealed Radionuclides in Diagnostics
OSTI ID:
6006760
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: DTGDA
Submitting Site:
HEDB
Size:
Pages: 1130-1136
Announcement Date:

Journal Article:

Citation Formats

Morozumi, Tatsuru, Nakajima, Masato, Ogawa, Koichi, and Yuta, Shinichi. Attenuation correction method for single photon emission CT. Japan: N. p., 1983. Web.
Morozumi, Tatsuru, Nakajima, Masato, Ogawa, Koichi, & Yuta, Shinichi. Attenuation correction method for single photon emission CT. Japan.
Morozumi, Tatsuru, Nakajima, Masato, Ogawa, Koichi, and Yuta, Shinichi. 1983. "Attenuation correction method for single photon emission CT." Japan.
@misc{etde_6006760,
title = {Attenuation correction method for single photon emission CT}
author = {Morozumi, Tatsuru, Nakajima, Masato, Ogawa, Koichi, and Yuta, Shinichi}
abstractNote = {A correction method (Modified Correction Matrix method) is proposed to implement iterative correction by exactly measuring attenuation constant distribution in a test body, calculating a correction factor for every picture element, then multiply the image by these factors. Computer simulation for the comparison of the results showed that the proposed method was specifically more effective to an application to the test body, in which the rate of attenuation constant change is large, than the conventional correction matrix method. Since the actual measurement data always contain quantum noise, the noise was taken into account in the simulation. However, the correction effect was large even under the noise. For verifying its clinical effectiveness, the experiment using an acrylic phantom was also carried out. As the result, the recovery of image quality in the parts with small attenuation constant was remarkable as compared with the conventional method.}
journal = {Denshi Tsushin Gakkai Rombunshi, Part D; (Japan)}
volume = {66:10}
journal type = {AC}
place = {Japan}
year = {1983}
month = {Oct}
}