PMID- 2145750 OWN - NLM STAT- MEDLINE DCOM- 19901120 LR - 20190622 IS - 0002-9149 (Print) IS - 0002-9149 (Linking) VI - 66 IP - 13 DP - 1990 Oct 16 TI - Comparison of SPECT using technetium-99m agents and thallium-201 and PET for the assessment of myocardial perfusion and viability. PG - 72E-79E AB - This report reviews the applications of tomographic imaging with current and new tracers in assessing myocardial perfusion and viability. Multiple studies with thallium-201 (TI-201) single photon emission computed tomography (SPECT) imaging for the detection of coronary artery disease (CAD) have demonstrated high sensitivity, high rates of normalcy and high reproducibility. In assessing viability, fixed defects are frequently detected in viable zones in 4-hour studies with TI-201 imaging. Redistribution imaging performed 18 to 72 hours after injection or reinjection of TI-201 before 4-hour redistribution imaging has been shown to improve accuracy of viability assessment. TI-201 SPECT studies are limited by the suboptimal physical properties of TI-201, which result in variable image quality. The 2 new technetium-99m (Tc-99m) - labeled myocardial perfusion tracers offer the ability to inject much higher amounts of radioactivity, making it possible to assess ventricular function as well as myocardial perfusion from the same injection of radiotracer. Tc-99m sestamibi has very slow myocardial clearance, which allows for prolonged imaging time and results in image quality superior to that obtained with TI-201 and Tc-99m teboroxime. The combination of minimal redistribution of Tc-99m sestamibi and high count rates makes gated SPECT imaging feasible, and also permits assessment of patients with acute ischemic syndromes by uncoupling the time of injection from the time of imaging. The combination of high image quality and first-pass exercise capabilities may lead to a choice of this agent over TI-201 for assessment of chronic CAD.(ABSTRACT TRUNCATED AT 250 WORDS) FAU - Berman, D S AU - Berman DS AD - Department of Medicine (Division of Cardiology) Cedars-Sinai Medical Center, Los Angeles California 90048. FAU - Kiat, H AU - Kiat H FAU - Van Train, K F AU - Van Train KF FAU - Friedman, J AU - Friedman J FAU - Garcia, E V AU - Garcia EV FAU - Maddahi, J AU - Maddahi J LA - eng GR - 7651/PHS HHS/United States PT - Comparative Study PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Cardiol JT - The American journal of cardiology JID - 0207277 RN - 0 (Fluorine Radioisotopes) RN - 0 (Nitriles) RN - 0 (Organotechnetium Compounds) RN - 0 (Oximes) RN - 0 (Thallium Radioisotopes) RN - 0Z5B2CJX4D (Fluorodeoxyglucose F18) RN - 971Z4W1S09 (Technetium Tc 99m Sestamibi) RN - 9G2MP84A8W (Deoxyglucose) RN - UT0WHJ4951 (technetium Tc 99m teboroxime) SB - IM MH - Coronary Disease/*diagnostic imaging MH - Deoxyglucose/analogs & derivatives MH - Fluorine Radioisotopes MH - Fluorodeoxyglucose F18 MH - Heart/diagnostic imaging MH - Humans MH - Meta-Analysis as Topic MH - *Nitriles MH - *Organotechnetium Compounds MH - *Oximes MH - Sensitivity and Specificity MH - Technetium Tc 99m Sestamibi MH - *Thallium Radioisotopes MH - *Tomography, Emission-Computed MH - *Tomography, Emission-Computed, Single-Photon EDAT- 1990/10/16 00:00 MHDA- 1990/10/16 00:01 CRDT- 1990/10/16 00:00 PHST- 1990/10/16 00:00 [pubmed] PHST- 1990/10/16 00:01 [medline] PHST- 1990/10/16 00:00 [entrez] AID - 0002-9149(90)90616-9 [pii] AID - 10.1016/0002-9149(90)90616-9 [doi] PST - ppublish SO - Am J Cardiol. 1990 Oct 16;66(13):72E-79E. doi: 10.1016/0002-9149(90)90616-9.