Comparison of Ga-PSMA ligand PET/CT versus conventional cross-sectional imaging for target volume delineation for metastasis-directed radiotherapy for metachronous lymph node metastases from prostate cancer.

Purpose: To assess the differences in the target volume (TV) delineation of metachronous lymph node metastases between  Ga-PSMA ligand PET/CT and conventional imaging in a comparative retrospective contouring study.

Patients And Methods: Twenty-five patients with biochemical prostate cancer recurrence after primary prostatectomy underwent  Ga-PSMA ligand PET/CT in addition to conventional imaging techniques such as CT and/or MR imaging for restaging. All patients were diagnosed with at least one lymph node metastasis.

Patterns of Progression After Ga-PSMA-Ligand PET/CT-Guided Radiation Therapy for Recurrent Prostate Cancer.

Purpose: To determine the patterns of progression after Ga prostate-specific membrane antigen (PSMA)-ligand positron emission tomography (PET)/computed tomography (CT)-guided radiation therapy (RT) for recurrent oligometastatic prostate cancer (PCa).

Methods And Materials: One hundred and eight patients with increased prostate-specific antigen levels, who received Ga-PSMA-ligand PET/CT-guided RT for recurrent oligometastatic disease after primary therapy for PCa were included. The biochemical progression-free survival and distant disease-free survival after PSMA-ligand PET/CT-guided RT were determined.

Comparison of relative and absolute rectal dose-volume parameters and clinical correlation with acute and late radiation proctitis in prostate cancer patients.

Purpose: To compare relative and absolute dose-volume parameters (DV) of the rectum and their clinical correlation with acute and late radiation proctitis (RP) after radiotherapy (RT) for prostate cancer (PCa).

Patients And Methods: 366 patients received RT for PCa. In total, 49.