EFFECTIVE RADIATION DOSE TO STAFF MEMBERS DUE TO MYOCARDIAL PERFUSION SPECT IMAGING: TRACKING THE EXPOSURE FROM PREPARATION TO PATIENT RELEASE.

The aim of the work was to tack the radiation exposure from dose preparation down to patient release during nuclear cardiac imaging. A total of 111 patients were recruited and external exposure was measured using a standard calibrated survey meter. Five phases have been determined including dose preparation, injection, post-injection, patient setup and patient release.

Evaluation of left ventricular ejection fraction by the quantitative algorithms QGS, ECTb, LMC and LVGTF using gated myocardial perfusion SPECT: investigation of relative accuracy.

Aim: To compare the quantitative algorithms Emory Cardiac Toolbox (ECTb), quantitative gated SPECT (QGS), layer of maximum counts (LMC), and left ventricular global thickening fraction (LVGTF) using gated myocardial tomography in the calculation of the left ventricular ejection fraction using the regression without truth (RWT) technique.

Materials And Methods: Seventy-four consecutive patients were included in the study (59 males). All patients underwent stress-rest myocardial perfusion SPECT using Tc-tetrofosmin.