| Japanese |
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| Title | 201Tl心筋SPECTにおける二次元極座標表示 (bulls-eye view) 法 |
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| Subtitle | 原著 |
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| Authors | 間島寧興*, 石川隆志*, 守谷悦男*, 内山真幸*, 森豊*, 山田哲久*, 川上憲司*, 副島道正**, 平野隆子***, 細羽実*** |
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| Authors(kana) | |
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| Organization | *東京慈恵会医科大学放射線医学教室, **第二内科学教室, ***島津製作所 |
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| Journal | 核医学 |
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| Volume | 24 |
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| Number | 3 |
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| Page | 251-261 |
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| Year/Month | 1987/3 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」201Tl心筋single photon emission computed tomography(SPECT)像の読影・解析方法の一つである二次元極座標表示(2-dimensional polar coordinate representation, bulls-eye view)法を試み, その有用性について検討した. 対象は狭心症10例, 陳旧性心筋梗塞5例と正常5例で, 心疾患例はいずれも冠動脈造影検査で病変部が確認されている. 二次元極座標表示法と従来の再構成像との診断能を, 熟練者(Aグループ, 核医学経験3年以上)と非熟練者(Bグループ, 1年未満)の2グループについてROCカーブ解析で比較した. その結果, 従来の再構成像の読影に関しては, Aグループのaccuracyが93%, Bグループが55%でA, Bグループ間に差がみられたが, 二次元極座標表示像では, A, Bグループともに高いaccuracy(90%, 86%)が得られ, A, Bグループ間の差が小さくなった. また, Bグループの診断に要した時間は, 従来の再構成像に比べて短縮した. 以上より, 二次元極座標表示法は非熟練者の心筋シンチグラムの読影を容易にするという点で臨床的有用性が大きいと考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Myocardial imaging, Thallium-201, SPECT, Two dimensional polar coordinate representation. |
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| English |
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| Title | Two Dimensional Polar Coordinate Representation (Bulls-eye View) Method of the 201Tl Myocardial SPECT |
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| Subtitle | Original Articles |
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| Authors | Yasuoki MASHIMA*, Takashi ISHIKAWA*, Etsuo MORIYA*, Mayuki UCHIYAMA*, Yutaka MORI*, Tetsuhisa YAMADA*, Kenji KAWAKAMI*, Michimasa SOEJIMA**, Takako HIRANO***, Minoru HOSOBA*** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, **The Second Department of Medicine, Jikei University School of Medicine, ***Medical System Division, Shimadzu Corporation |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 24 |
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| Number | 3 |
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| Page | 251-261 |
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| Year/Month | 1987/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Two dimensional polar coordinate representation (bulls-eye view) method was applied to the 201Tl myocardial imaging by single photon emission CT (SPECT) and this method was compared with a conventional SPECT image for the ability to detect the abnormalities. We examined 5 normals and 15 patients (10 angina pectolis and 5 myocardial infarction), whose diagnosis were confirmed by coronary angiography. Diagnostic efficacy of two methods was evaluated in two groupes of radiologists by means of ROC (receiver operating characteristic) curve. Radiologists in A group have three years experience or more in nuclear medicine and those in B group have less than one year experience. As a result, diagnostic accuracy of conventional method was 93 % in a group and 55 % in B group. The accuracy by the two polar coordinate representation was increased from 55% to 86% in B group, although no remarkable improvement was seen in the accuracy (90%) of A group. The consuming time for diagnosis was shortend by using the two dimensional polar coordinate representation method, especially in B group. This result suggests that the two dimensional polar coordinate representation method is useful for reading the myocardial imaging in not-well trained radiologists as well as in the well trained. |
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| Practice | Clinical medicine |
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| Keywords | Myocardial imaging, Thallium-201, SPECT, Two dimensional polar coordinate representation. |
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