Stress technetium-99m tetrofosmin myocardial scintigraphy: a new one-hour protocol for the detection of coronary artery disease

J Cardiol. 1998 Oct;32(4):219-26.


A one-hour protocol for stress myocardial scintigraphy using technetium-99m (99mTc) tetrofosmin was compared with scintigraphy using thallium-201 (201Tl) for the detection of coronary artery disease in 43 consecutive patients who underwent stress 201Tl and 99mTc-tetrofosmin myocardial scintigraphy, and coronary arteriography within 1 week. For the stress 99mTc-tetrofosmin test, rest imaging data were acquired 20 min after intravenous injection of 5-7 mCi 99mTc-tetrofosmin, using a 3-head gamma camera collecting 20-sec views over 360 degrees. After dobutamine infusion or bicycle ergometer exercise, 20-25 mCi of 99mTc-tetrofosmin was additionally injected at peak stress. The stress images were acquired 15 min after the second injection with 5-sec views over 360 degrees. All patients also underwent 201Tl exercise and redistribution (4-hour) imaging following a standard protocol. The overall sensitivity for detecting coronary artery disease was 96.0%, with an overall specificity of 93.3% for both types of scintigraphy. Qualitative analyses of 21 conventionally divided left ventricular segments showed that the overall segmental concordance between the 99mTc-tetrofosmin and 201Tl imagings was 85.2% on the rest images and 82.1% on the stress images. The segmental concordance of the rest images was 87.0% in patients with neither significant stenosis nor myocardial infarction, 86.2% in patients with significant stenosis without myocardial infarction, and 82.9% in patients with significant stenosis and myocardial infarction, and the concordance values of the stress images were 85.4%, 87.5% and 75.6%, respectively. These preliminary results suggest that stress myocardial scintigraphy using the present new protocol is a promising approach for the detection of coronary artery disease, with diagnostic sensitivity and specificity comparable to those of stress 201Tl scintigraphy.

Publication types

  • Clinical Trial
  • Comparative Study

MeSH terms

  • Coronary Angiography
  • Coronary Disease / diagnostic imaging*
  • Exercise Test
  • Female
  • Humans
  • Male
  • Middle Aged
  • Organophosphorus Compounds* / administration & dosage
  • Organotechnetium Compounds* / administration & dosage
  • Radionuclide Imaging
  • Radiopharmaceuticals* / administration & dosage
  • Sensitivity and Specificity
  • Thallium Radioisotopes


  • Organophosphorus Compounds
  • Organotechnetium Compounds
  • Radiopharmaceuticals
  • Thallium Radioisotopes
  • technetium tc-99m tetrofosmin