Heart 1999;81:17-24 ( January )
Exercise four hour redistribution thallium-201 single photon emission computed tomography and exercise induced ST segment elevation in detecting the viable myocardium in patients with acute myocardial infarction
a First
Department of Internal Medicine, Osaka City University Medical School,
Osaka, Japan, b Division of Nuclear Medicine, Osaka City
University Medical School
Correspondence to: Dr H Yamagishi, First Department of Internal Medicine, Osaka City University Medical School, 1-5-7 Asahi-Machi, Abeno-Ku, Osaka 545-8586, Japan.
Accepted for publication 8 July 1998
Objective
To
investigate the specificity and sensitivity of the combination of
redistribution in exercise thallium-201 single photon emission computed
tomography (SPECT) and exercise induced ST elevation for detecting
the viable myocardium in patients with acute myocardial infarction.
Design
37 patients
were studied within seven weeks of onset of Q wave myocardial
infarction (anterior in 22, inferior in 15). All patients underwent
exercise four hour redistribution thallium-201 SPECT and positron
emission tomography using fluorine-18-fluorodeoxyglucose (FDG) and
nitrogen-13 ammonia under fasting conditions.
Results
Sixteen
patients showed exercise induced ST elevation
1.5 mm, and 15 of
these had increased FDG uptake in the infarct region. Eleven of 16 patients (10 of 11 patients with anterior infarctions) with
irreversible thallium-201 defects and increased FDG uptake showed
exercise induced ST elevation. The sensitivity, specificity, and
predictive accuracy of redistribution, exercise induced ST segment
elevation, or both for detecting increased FDG uptake were 82%, 75%,
and 67% (94%, 75%, and 91% for anterior infarctions), respectively.
Conclusions
In
patients with acute Q wave myocardial infarction, the combination of
redistribution in exercise thallium-201 SPECT and exercise induced ST
elevation can detect the viable myocardium in the infarct region with
high sensitivity and specificity, especially in patients with anterior infarctions.
© 1999 by Heart
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[Abstract] [Full Text] -
BERTELLA, M, SCALISE, F, ERIANO, G, VALENTINI, R
(2000). Exercise four hour redistribution thallium-201 SPECT and exercise induced ST segment elevation in detecting viable myocardium in patients with acute MI. Heart
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[Full Text] -
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[Full Text]
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