Quantitative Comparison of Yettirium-90 (Y90) PET/CT and Y90 SPECT/CT Voxel-Based Dosimetry post Resin Y90 Microsphere Radioembolization.

Lesion-level Quantitative Post-therapy SPECT/CT During 177Lu-DOTATATE PRRT for NET Liver Metastases

Background/Aim: Quantitative post-therapy single-photon emission computed tomography/computed tomography (SPECT/CT) may offer valuable insights for response assessment during peptide receptor radionuclide therapy (PRRT), but lesion-level evidence for liver metastases from neuroendocrine tumors (NETs) remains limited. T...

Feasibility study of dose calculation based on contrast-enhanced computed tomography for stereotactic body radiation therapy of lung metastases treated with MR-Linac

When clinical risks are appropriately managed, CHCT has the potential to serve as a reference image for lung tumor SBRT on MR-Linac to optimize imaging utilization and enhance clinical workflow efficiency.

Angio-CT does not increase patient radiation exposure compared to conventional cone-beam CT for intra-arterial liver procedures.

Impact of CT parameter reduction on quantitative SPECT/CT assessment in 99mTc imaging: A phantom study.

The findings support the use of optimized low dose CT protocols in SPECT/CT without compromising quantitative reliability, helping radiographers and nuclear medicine technologist balance radiation protection with diagnostic requirements.

Quantitative accuracy and clinical utility of ultra-low dose CT protocols for attenuation correction in PET/CT

In PET/CT imaging, CT frequently accounts for more than 50% of the total radiation exposure, even when used solely for attenuation correction and anatomical localisation. This poses a major limitation for dose-sensitive populations, including pregnant women and paediatric patients. This study systematically evalu...

Dosimetric comparison of HDR Co-60 and Ir-192 brachytherapy sources by model-based dose calculation algorithms and its clinical implication in different brachytherapy sites and techniques.

INTRODUCTION Numerous dosimetric studies have reported clinically insignificant differences between iridium-192 and cobalt-60. However, such comparison studies were conducted using TG-43 algorithms where heterogeneity is not accounted. Model based dose calculation algorithms (MBDCA) significantly improve dosimetric acc...