The proposed protocol showed potential for constructing an appropriate common NDB from SPECT images with SC, AC and spatial resolution compensation.

No abstract

(89)Sr bremsstrahlung-merged SPECT imaging could be more useful for detailed detection of whole body (89)Sr distribution than planar imaging. Intestinal (89)Sr accumulation due to (89)Sr physiologic excretion was detected in feces for 4 days after tracer injection.

No abstract

Personal dose equivalent, H p (10) and H p (0.07) doses were measured using an ionization chamber and personal electric dosimeters to estimate the exposure dose for medical staff members and carers as received from 89 Sr therapy patients. The H p (10) for medical workers was measured using personal dosimeters and was found to be <1 μSv during the measurement period. H p (0.07) for medical workers did not exceed 5 μSv per case during routine work, although the dose on the patient's skin surface was about 20 times that on the medical staff. To investigate the contribution of electrons to the measured dose, the dose on the patient's skin surface as obtained from uniformly distributed 89 Sr in a similar MIRD phantom was calculated using EGS5 code. The peak energy of the incident photons was approximately 0.6 MeV. The estimated H p (10) and H p (0.07) doses for the medical staff were 0.43 and 91 μSv/h, respectively. The contribution of electrons to the calculated H p (0.07) was approximately 200 times that of photons. Thus, the high H p (0.07) for medical staff is attributed to the strong contribution of electrons.