… Today, quantitative SPECT combined with registered anatomical CT images provide data …
the absorbed energy and the absorbed dose. Absorbed dose calculation from SPECT images …

… dose delivered by SPECT/CT scans, so this study aimed (a) to determine the radiation exposure
of patients undergoing SPECT/CT … men and women organ-absorbed doses. The D T,R …

… also shown together with the mean absorbed dose per unit of … need of higher doses for the
CT component of SPECT/CT is … dose range from 2 to 4 mSv for SPECT-guided low-dose CT […

… dose quantity is the absorbed dose D T (given in the unit gray, 1 Gy = 1 J/kg), which is defined
as the radiation energy absorbed … For radiological protection purposes, the absorbed dose …

… Patient movements need to be accounted for, so that SPECT data and CT data match each
… the CT and SPECT images.For the purposes of this study, a perfectly registered CT was …

… CT can increase the overall radiation dose by up to 14 mSv (11). Low-dose CT is associated
with relatively low radiation doses … ascertaining the absorbed dose delivered during …

… the patients by the fractions of photons absorbed within the body tissues and by scattered …
dose CT and subsequent low-dose SPECT/CT by a single comprehensive full-dose SPECT/CT…

… patient dose estimation and magnitude of patient dose In CT, the estimates of absorbed
doses … tissues and effective doses are based on the quantities (13) : the weighted CT air-kerma …

… DPM (Dose Planning Method) [6] (originally developed specifically for fast absorbed dose
… specifically for efficient computation of absorbed dose distributions in CT-derived, voxelized …

… , CT is also used to derive attenuation maps for the SPECT … Typically, in patient imaging,
the SPECT and CT acquisitions … In phantom simulations described here, the SPECT image …