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Coronary angiography and thallium-201 single photon emission computed tomography in multiple vessel coronary artery

B Svane1, D Bone, A Holmgren

  • 1Department of Thoracic Radiology, Karolinska Sjukhuset, Stockholm, Sweden.

Acta Radiologica (Stockholm, Sweden : 1987)
|July 1, 1990
PubMed

Insights

This study compared coronary angiography and thallium-201 SPECT myocardial perfusion imaging in patients with coronary artery disease. Thallium-201 SPECT effectively identified perfusion defects and correlated with severe arterial lesions, aiding in disease assessment.

Area of Science:

  • Cardiology
  • Nuclear Medicine
  • Diagnostic Imaging

Background:

  • Coronary artery disease (CAD) remains a leading cause of mortality worldwide.
  • Accurate non-invasive assessment of myocardial perfusion is crucial for guiding treatment strategies in CAD patients.
  • Thallium-201 single-photon emission computed tomography (SPECT) myocardial perfusion imaging is a widely used diagnostic tool.

Purpose of the Study:

  • To compare the diagnostic performance of selective coronary angiography and 201Tl SPECT myocardial perfusion imaging.
  • To evaluate the ability of 201Tl SPECT to detect perfusion defects and correlate them with the extent and severity of coronary artery disease.
  • To assess the accuracy of 201Tl SPECT in identifying the most severely affected coronary arteries.

Main Methods:

  • A study population of 141 patients with multiple vessel disease was analyzed.
  • Patients included those with 3-vessel disease (n=80), 2-vessel disease (n=34), and post-coronary artery bypass grafting (n=27).
  • Comparison involved selective coronary angiography and polar map presentations of 201Tl SPECT myocardial perfusion imaging.

Main Results:

  • Perfusion defects were identified in 89% of patients (125/141), corresponding to areas supplied by stenotic arteries in 54% of cases.
  • 201Tl SPECT correctly indicated the type and extent of disease in 20% of 3-vessel disease, 15% of 2-vessel disease, and 30% of post-bypass patients.
  • Perfusion defects accurately localized the most severe arterial lesion in 86% of cases (107/125), with a 11% false-negative rate (15/141).

Conclusions:

  • 201Tl SPECT myocardial perfusion imaging is valuable for detecting perfusion abnormalities in patients with coronary artery disease.
  • The imaging technique effectively correlates perfusion defects with the presence and severity of coronary artery stenosis.
  • 201Tl SPECT serves as a useful non-invasive tool for assessing myocardial perfusion and guiding clinical management in CAD.

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