Comparison of dipyridamole-handgrip test and bicycle exercise test for thallium tomographic imaging
Seventy-three patients with angina pectoris and 20 with atypical chest pain, who underwent coronary angiography, were examined by single-photon emission computed thallium tomography (TI-SPECT) using a combined dipyridamole-handgrip stress test. Perfusion defects were detected in 78 of 81 patients with angiographically significant coronary artery disease (CAD) (sensitivity 96%). In 9 of 12 patients without CAD, the thallium images were normal (specificity 75%). Thirty-five patients with CAD were reexamined by TI-SPECT using a dynamic bicycle exercise stress test. The sensitivity of the dipyridamole-handgrip test did not differ from the bicycle exercise test in diagnosing the CAD (97% vs 94%). Multiple thallium defects were seen in 19 of 22 (86%) patients with multivessel CAD by the dipyridamole-handgrip test but only in 14 of 22 (64%) by the bicycle exercise test. Noncardiac side-effects occurred in 17 of 93 (18%) patients after dipyridamole infusion. Cardiac symptoms were less common during the dipyridamole-handgrip test than during the bicycle exercise (15% vs 76%, p less than 0.01). These data suggest that the dipyridamole-handgrip test is a useful alternative stress method for thallium perfusion imaging, particularly in detecting multivessel CAD.
- Research Organization:
- Oulu Univ. Central Hospital (Finland)
- OSTI ID:
- 5315817
- Journal Information:
- Am. J. Cardiol.; (United States), Journal Name: Am. J. Cardiol.; (United States) Vol. 61:4; ISSN AJCDA
- Country of Publication:
- United States
- Language:
- English
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62 RADIOLOGY AND NUCLEAR MEDICINE
BODY
CARDIOVASCULAR AGENTS
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COMPARATIVE EVALUATIONS
COMPUTERIZED TOMOGRAPHY
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
EMISSION COMPUTED TOMOGRAPHY
EXERCISE
HEART
IMAGE PROCESSING
ISOTOPES
ORGANS
PATIENTS
PROCESSING
SENSITIVITY ANALYSIS
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
THALLIUM ISOTOPES
TOMOGRAPHY
VASODILATORS