Fig. 1From: Left ventricular function assessment using 123I/99mTc dual-isotope acquisition with two semi-conductor cadmium–zinc–telluride (CZT) cameras: a gated cardiac phantom studyEnergy spectra using DNM 530c. Typical single 123I, single 99mTc, and simultaneous (123I and 99mTc) point source (1.7 MBq) energy spectra using DNM 530c without in-object scatter. Notice the low tailing effect and the down-scatter of 123I towards 99mTc in the dual isotope conditionBack to article page