In the operation of any SPECT/CT system, in addition to internal radiation exposure (γ-ray)
resulting from administration of radiopharmaceuticals, external radiation exposure (x-ray) …

The purpose of this study was to investigate how the choice of the scanned region affects
organ doses in CT. ImPACT CT Patient Dosimetry Calculator (version 1.0) was used to …

The aim of this study was to assess radiation dose from the cone beam computed
tomography (CBCT) component of single photon emission tomography/computed …

Organ absorbed doses in computed tomography (CT) scans can be measured with
anatomical phantoms but not inside the human body. In this study, a straightforward method …

Ionizing radiation from Computed tomography (CT) examinations and the associated health
risks are growing concerns. The purpose of this study was to directly measure individual …

Organ and the effective doses of patients undergoing clinical X ray examinations of chest
and abdomen were evaluated with an anthropomorphic phantom and a new dosimetry …

Objective To study whether the actual radiation exposure is different between computed
tomography (CT) scanners and medical centers when the same patient is scanned, we …

Aims To assess incremental and total patient exposure from clinical SPECT/CT imaging by
means of effective dose estimations with regards to different protocols and SPECT/CT …

Although the use of CT in medical diagnosis delivers radiation doses to patients that are
higher than those from other radiological procedures, lack of optimized protocols could be …

Organ doses are useful for estimating radiation doses to patients. However, it is impossible
to determine specific organ doses for each patient. The aim of this study was to examine the …