Role of dipyridamole thallium-201 imaging in left bundle branch block

George Larcos, Manuel L. Brown, Raymond J. Gibbons

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Exercise thallium-201 imaging is of limited diagnostic accuracy in patients with left bundle branch block (LBBB), because decreased septal activity often occurs in the absence of left anterior descending artery disease.1-3 A combination of tachycardia, shortened diastolic relaxation time and asynchronous contraction are considered to be responsible for this phenomenon.1,2 Recently, it has been suggested that dipyridamole thallium-201 scintigraphy significantly improves specificity in patients with LBBB by assessing coronary flow reserve at lower heart rates.4 Relatively few patients in the latter report, however, had angiographic correlation. Accordingly, this study compares this technique with angiographic findings in a larger group of patients with LBBB at rest.

Original languageEnglish (US)
Pages (from-to)1097-1098
Number of pages2
JournalThe American journal of cardiology
Issue number10
StatePublished - Oct 15 1991

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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