Rationale for Prostate-Specific-Membrane-Antigen-Targeted Radionuclide Theranostic Applied to Metastatic Clear Cell Renal Carcinoma.

Prostate-specific membrane antigen (PSMA), whose high expression has been demonstrated in metastatic aggressive prostate adenocarcinoma, is also highly expressed in the neovessels of various solid tumors, including clear cell renal cell carcinoma (ccRCC). In the VISION phase III clinical trial, PSMA-targeted radioligand therapy (PRLT) with lutetium 177 demonstrated a 4-month overall survival OS benefit compared to the best standard of care in heavily pretreated metastatic prostate cancer. Despite the improvement in the management of metastatic clear cell renal cell carcinoma (mccRCC) with antiangiogenic tyrosine kinase inhibitor (TKI) and immunotherapy, there is still a need for new treatments for patients who progress despite these drugs.

Discriminating Inflammatory Radiation-Related Changes From Early Recurrence in Patients With Glioblastomas: A Preliminary Analysis of 68 Ga-PSMA-11 PET/CT Compared With 18 F-FDOPA PET/CT.

Purpose Of The Report: Using morphological and functional imaging to discriminate recurrence from postradiation-related modifications in patients with glioblastomas remains challenging. This pilot study aimed to assess the feasibility of using 68 Ga-prostate-specific membrane antigen (PSMA) 11 PET/CT compared with 18 F-FDOPA PET/CT to detect early recurrence.

Methods: Nine patients followed up for glioblastomas who received MRI during 12 months of follow-up were referred for both 68 Ga-PSMA-11 and 18 F-FDOPA PET/CT.

Yttrium-90 quantitative phantom study using digital photon counting PET.

Background: PET imaging of Y-microsphere distribution following radioembolisation is challenging due to the count-starved statistics from the low branching ratio of e/e pair production during Y decay. PET systems using silicon photo-multipliers have shown better Y image quality compared to conventional photo-multiplier tubes. The main goal of the present study was to evaluate reconstruction parameters for different phantom configurations and varying listmode acquisition lengths to improve quantitative accuracy in Y dosimetry, using digital photon counting PET/CT.

Optimization of the radiosynthesis of [68Ga]Ga-PSMA-11 using a Trasis MiniAiO synthesizer: do we need to heat and purify?

Unlabelled: INTRODUTION:: [Ga]Ga-prostate specific membrane antigen (PSMA)-11 showed a clear gain in sensitivity for lesion detection in the biological recurrence of prostate cancer as compared to the standard [F]fluorocholine radiopharmaceutical. To meet the strong demand for [Ga]Ga-PSMA-11, we aimed to optimize an automated radiolabeling process by evaluating the influence of different key parameters on radiochemical purity and radiochemical yield.

Methods: The radiosynthesis of [Ga]Ga PSMA-11 was performed using a Trasis MiniAio synthesizer and a Ge/Ga GalliaPharm generator supplied by Eckert & Ziegler, Berlin, Germany.

Time in Therapeutic Range of Oral Vitamin K Antagonists in Hospitalized Elderly Patients.

Background: Oral vitamin K antagonists (VKAs) are commonly used in older adults. To ensure the efficiency and safety of these drugs, the international normalized ratio (INR) must be monitored. The time in therapeutic range (TTR) is an internationally recommended assessment of the anticoagulation quality.