Japanese
Title正常者における運動負荷体位および運動量と全身タリウム分布との関係
Subtitle原著
Authors加藤善久*, 金子堅三*, 近藤武*, 渡辺佳彦*, 古田敏也*, 下方辰幸*, 沢野隆志*, 黒川洋*, 桐山卓三*, 桜井充*, 水野康*, 江尻和隆**, 竹内昭**, 古賀佑彦**
Authors(kana)
Organization*藤田学園保健衛生大学医学部内科, **放射線科
Journal核医学
Volume24
Number12
Page1749-1756
Year/Month1987/12
Article原著
Publisher日本核医学会
Abstract「要旨」運動負荷体位による全身血流分布の差異および運動負荷量と全身血流分布の関係を検討するために, 正常者30名(end point到達群(臥位(E)群11名, 座位(E)群8名)およびend point非到達群(臥位(NE)群11名))を対象に臥位および座位エルゴメータ運動負荷タリウム全身シンチグラフィを撮像し, (各臓器の総カウント/全身の総カウント)×100(%)より各臓器の分布比(%D)を求めた. 座位(E)群の最大心拍数のみが臥位(E)群に比べて有意に高値を示したが, 臥位(E)群および座位(E)群の心臓, 肺, 肝臓および大腿の%Dは両群間に有意差を認めなかった. 臥位(E)群および臥位(NE)群を対象として運動負荷量と全身血流分布の関係についても検討を行った. 運動負荷持続時間と肺および肝臓の%Dは負の, 大腿の%Dは正の有意な相関を認めた. タリウム全身シンチグラフィは運動負荷時の全身血流分布の評価に有用な方法であると考えられた.
Practice臨床医学：一般
KeywordsThallium-201 whole-body scintigraphy, Posture of exercise stress testings, Blood flow.
English
TitleEstimation of Fractional Distribution of Cardiac Output by Whole-Body Thallium-201 Scintigraphy during Supine and Sitting Ergometer Stress Testing in Normal Subjects
Subtitle- Original Articles -
AuthorsYoshihisa KATO*, Kenzou KANEKO*, Takeshi KONDO*, Yoshihiko WATANABE*, Toshiya FURUTA*, Tatsuyuki SHIMOKATA*, Takashi SAWANO*, Hiroshi KUROKAWA*, Takuzo KIRIYAMA*, Mitsuru SAKURAI*, Yasushi MIZUNO*, Kazutaka EJIRI**, Akira TAKEUCHI**, Sukehiko KOGA**
Authors(kana)
Organization*Department of Internal Medicine, **Department of Radiology, Fujita-Gakuen Health University School of Medicine
JournalThe Japanese Journal of nuclear medicine
Volume24
Number12
Page1749-1756
Year/Month1987/12
ArticleOriginal article
PublisherTHE JAPANESE SOCIETY OF NUCLEAR MEDICINE
AbstractTo compare the fractional distribution of cardiac output during supine and sitting submaximal ergometer exercise stress testing, and to study the relationship between the work load of supine exercise stress testing and the distribution of cardiac output, thallium-201 whole-body scintigraphy was performed in 30 normal subjects. The regions of interest (ROI) were drawn over the whole body and each organ (heart, lung, liver and thigh), and then, the percent distribution (%D) was calculated in each organ. Although the different distribution of thallium-201 was expected during supine and sitting ergometer exercise stress testing, the %D of heart, lung, liver and thigh were not significantly different between both groups. Some control mechanisms against gravity, like the changes of vascular tonus in each organ controlled by sympathetic system and/or the muscular pumping action of thigh, may keep the similar distribution in both different positions during exercise. The %D of heart, lung, liver and thigh were not significantly correlated to the maximal heart rate, maximal systolic blood pressure or maximal pressure rate product, respectively, but the %D of lung (r=-0.571), liver (r=-0.473) and thigh (r=0.614) were significantly correlated to the duration of exercise. In conclusion, the fractional distribution of cardiac output is similar during supine and sitting ergometer exercise stress testing. Further, the increment of cardiac output due to exercise is distributed to working muscles according to work load. The thallium-201 whole-body scintigraphy may be useful method to estimate the distribution pattern of cardiac output during exercise.
PracticeClinical medicine
KeywordsThallium-201 whole-body scintigraphy, Posture of exercise stress testings, Blood flow.

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