CT-Guided Fiducial Marker Implantation with Ultra-fine 25-Gauge Needle Prior to Proton Therapy for Liver Malignancies Abstract (extract), Purpose: Proton therapy is highly effective for liver malignancies, and to increase its accuracy, placement of fiducial markers in the liver is preferred. We retrospectively evaluated the safety and feasibility of CT-guided fiducial marker implantation using ultra-fine 25-gauge needles before proton therapy for liver malignancies. Materials […]
Tag Archives: Proton
Summary: The purpose was to estimate the dose perturbation introduced by implanted radiopaque fiducial markers in proton beam therapy (PBT) and to compare cylindrical 1.2 x 3.0 mm and 0.6 x 4.0 mm gold markers to 0.28×20 mm Gold Anchor markers. Radiochromic film measurements of a phantom showed that the Gold Anchor marker causes the […]
Summary: Between 2015 and 2017, 96 patients had 3 Gold Anchor fiducial markers placed in conjunction with transperineal SpaceOar placement into the prostate at the University of Florida Health Proton Therapy Institute (UFPTI). None of these patients developed sepsis. The authors write in their discussion “Bacterial UTI following fiducial placement to facilitate treatment planning and […]
“Proton therapy planning and image-guidance strategies within a randomized controlled trial for high-risk prostate cancer” Extract from abstract: The Danish Prostate Cancer Group is launching the randomized trial, PROstate PROTON Trial 1 (NCT05350475), that compares photons and protons to the prostate and pelvic lymph nodes in treatment of high-risk prostate cancer. The aim of the […]
“Real-time gated proton therapy with a reduced source to imager distance: Commissioning and quality assurance” Introduction (extract): Real-time gated proton therapy (RGPT) is a motion management technique unique to the Hitachi particle therapy system. It uses pulsed fluoroscopy to track an implanted fiducial marker. The marker positional tolerance can be defined such that the proton […]