Japanese
TitleSingle Photon Emission CTを用いた心拍同期心プールスキャンによる左室逆流性弁膜疾患の逆流率の測定
Subtitle原著
Authors大嶽達*, 西川潤一*, 町田喜久雄*, 南学*, 岡田吉隆*, 牧田幸三*, 伊藤正光*, 小坂昇*, 飯尾正宏*, 芹沢剛**, 川原貴**, 大内尉義***, 吉栖正生***, 外山比南子****, 村田啓*****
Authors(kana)
Organization*東京大学医学部放射線科, **第二内科, ***第三内科, ****東京都養育院附属病院核医学放射線部, *****虎の門病院放射線科
Journal核医学
Volume22
Number6
Page885-894
Year/Month1985/6
Article原著
Publisher日本核医学会
Abstract「要旨」左室逆流性弁膜疾患患者14例, 逆流や短絡を有しない各種心疾患患者14例について, SPECTを用いた心拍同期心プールスキャンにより逆流率を求め, X線心臓血管造影のSellers分類と比較した. 対照例では逆流率の平均は5.8±5.9% (n=14) , 左室逆流性弁膜疾患例では平均42.4±15.8% (n=14) であり (P<0.001) , 逆流診断のsensitivityは93% (13/14例) , specificityは100% (14/14例) であった. Sellers II度以下の軽度逆流の4症例の逆流率の平均は24.6±10.1%, III度以上の高度逆流の10症例は49.5±11.0%であり (p<0.005) , 逆流症例中高度逆流を高度と正診するsensitivityは80% (8/10例) , 軽度逆流を軽度と正診するspecificityは75% (3/4例) であった. SPECTを用いた心拍同期心プールスキャンは逆流の有無および重症度の診断にきわめて有用であり, planar法よりも優れていた.
Practice臨床医学：一般
KeywordsSingle photon emission computed tomography, Gated cardiac blood pool scan, Regurgitant fraction, Valvular regurgitation, Ejection count image
English
TitleEvaluation of Regurgitant Fraction of Left-sided Valvular Regurgitation by Gated Cardiac Blood Pool Scan Using SPECT
SubtitleOriginal Articles
AuthorsTohru OHTAKE*, Junichi NISHIKAWA*, Kikuo MACHIDA*, Manabu MINAMI*, Yoshitaka OKADA*, Kohzo MAKITA*, Masamitsu ITOH*, Noboru KOSAKA*, Masahiro IIO*, Takashi SERIZAWA**, Takashi KAWAHARA**, Yasuyoshi OHUCHI***, Masao YOSHIZUMI***, Hinako TOYAMA****, Hajime MURATA*****
Authors(kana)
Organization*Department of Radiology, **Second Department of Internal Medicine, ***Third Department of Internal Medicine, Faculty of Medicine, University of Tokyo, ****Department of Nuclear Medicine and Radiological Science, Tokyo Metropolitan Geriatric Hospital, *****Department of Radiology, Toranomon Hospital
JournalThe Japanese Journal of nuclear medicine
Volume22
Number6
Page885-894
Year/Month1985/6
ArticleOriginal article
PublisherTHE JAPANESE SOCIETY OF NUCLEAR MEDICINE
Abstract[Summary] Regurgitant fraction (RF) of 28 cases (14 cases of mitral regurgitation and/or aortic regurgitation, 14 cases without regurgitation) was evaluated by gated cardiac blood pool scan, using single photon emission computed tomography (SPECT) . Data were acquired from 32 views over 180° (LPO to RAO) for end-diastolic (ED) phase and endsystolic (ES) phase. ED and ES short-axis tomogram was reconstructed simultaneously. Ejection count image of short-axis tomogram was obtained by subtraction of ES image from ED image. Atrium was erased in ejection count image because minus count was regarded as zero. LV ejection count (EC) and RVEC were calculated by summing up EC of each slice from apex to base. RF was obtained from formula : (LVEC-RVEC) / LVEC. Calculated RF of 14 control subjects was 5.8+-5.9% (mean+-SD) , RF of 14 cases with regurgitation (Re) was 42.4+-15.8% (p<0.001) . Sensitivity for detecting Re was 93% (13/14 cases) , and specificity was 100% (14/14 cases) . RF of mild Re (I or II : Sellers' classification) was 24.6+-10.1% (n=4) and RF of severe Re (III or IV) was 49.5+-11.0% (n=10) (p<0.005) . Sensitivity for distinguishing severe Re from mild Re was 80% (8/10 cases) , and specificity was 75% (3/4cases) . In planar imaging, RF was calculated by fixed ROI method, RF of 14 control subjects was 39.8+-12.6%, and RF of 14 cases with Re was 60.4+-18.4% (P<0.001) . Sensitivity for detecting Re was 78.6% (11/14 cases) , and specificity was 85.7% (12/14cases) . In conclusion we can evaluate RF of MR and/or AR by gated cardiac blood pool scan using SPECT more accurately than using Planar imaging because we can separate right atrium and ventricle using SPECT.
PracticeClinical medicine
KeywordsSingle photon emission computed tomography, Gated cardiac blood pool scan, Regurgitant fraction, Valvular regurgitation, Ejection count image

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