Differentiation of transiently ischemic from infarcted myocardium by Thallium-201 exercises scintigram after active ergometer rehabilitation

Tomoyuki Yambe, Shin ichi Nitta, Motonao Tanaka, Tai ichiroh Meguro, Yoshifumi Saijoh, Shigeru Naganuma, Shin ichi Kobayashi, Norio Endoh, Yoshio Terasawa, Yoshiaki Katahira, Taroh Sonobe, Keiko Nitta, Hisanao Takeda, Kazuhiko Takahashi, Yoshihisa Shimanuki, Hisao Itoh

Research output: Contribution to journalArticlepeer-review

Abstract

It has been frequently reported that while myocardial viability is neglected in conventional methods of diagnosis such as left ventriculography, ECG, and exercise thallium-201 myocardial scintigraphy (Ex-Tl), revascularization often results in improving left ventricular wall motility. In the present study, the authors contrived a method to accurately evaluate the viability ot the myocardium by means of exercise rehabilitation, and tested the method in clinical cases. Among patients with myocardial infarction, we selected a patient with negative viability in the diseased area as determined by chronic ECG, left ventriculography (LVG), coronary angiography and Ex-Tl. This patient went through two weeks of active exercise rehabilitation gauged with an ergometer, and was then re-examined by Ex-Tl. After the evaluation, revascularization was performed for the patient who demonstrated viability of the infarcted myocardium in EX-T1 after rehabilitation, and significant improvement in contractility was shown in the chronic LVG. These findings indicate that our method of detecting potential viability of the infarcted myocardium is of clinical significance.

Original languageEnglish
Pages (from-to)187-192
Number of pages6
JournalAnnals of Nuclear Medicine
Volume7
Issue number3
DOIs
Publication statusPublished - 1993 Sep 1

Keywords

  • Exercise Tl-201 myocardial scintigraphy
  • Rehabilitation
  • Revascularization
  • SPECT
  • Viability

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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