Evaluation of institutional whole-body and extremity occupational radiation doses in nuclear medicine.

This study evaluated nuclear medicine occupational radiation doses at Sultan Qaboos University Hospital, a 700-bed tertiary care teaching hospital in Oman. Personal effective whole-body doses, Hp(10), and extremity doses, Hp(0.07), were collected for 19 medical radiation workers over a 7-year period (2015-2021).

Optimization of BMI-Based Images for Overweight and Obese Patients - Implications on Image Quality, Quantification, and Radiation Dose in Whole Body F-FDG PET/CT Imaging.

Purpose: In PET/CT imaging, the activity of the F-FDG activity is injected either based on patient body weight (BW) or body mass index (BMI). The purpose of this study was to optimise BMI-based whole body F-FDG PET images obtained from overweight and obese patients and assess their image quality, quantitative value and radiation dose in comparison to BW-based images.

Methods: The NEMA-IEC-body phantom was scanned using the mCT 128-slice scanner.

Differences in Tumour Aggressiveness Based on Molecular Subtype and Race Measured by [F]FDG PET Metabolic Metrics in Patients with Invasive Carcinoma of the Breast.

Breast cancer in women of African descent tends to be more aggressive with poorer prognosis. This is irrespective of the molecular subtype. [F]FDG PET/CT metrics correlate with breast cancer aggressiveness based on molecular subtype.

Reverse Liver Spleen Uptake on [ 68 Ga]Ga-PSMA-11 PET/CT.

An 80-year-old man underwent [ 68 Ga]Ga-PSMA-11 PET/CT for staging of high-risk prostate cancer. Homogeneously increased liver uptake, more than 3-fold the splenic uptake, was seen. There was no hepatic lesion evident on CT.

Source of Ectopic ACTH Secretion Easily Identified by 68 Ga DOTANOC PET/CT.

Malignant tumors account for most sources of ectopic ACTH Cushing syndrome (EA-CS). Early localization of the source and complete removal can be curative and also prevent metastasis. Diagnostic CT is known to perform better than PET/CT (low dose) in characterizing lung pathologies.