The utility of feature line parallelization as the initial step in manual or semi-automatic 3D rigid-body registration of post-implant CT and MR prostate image volumes is investigated. Image data consisted of CT and 1.5T MRI (balanced fast-field echo, Te = 4.8 ms, Tr = 9.6 ms) axial ...
Radioactive seed implants are a form ofradiation therapyforprostate cancer. Brachytherapy, or internal radiation therapy, are also terms used to describe this procedure. There are two types ofprostatebrachytherapy: permanent and temporary. Compared toexternal radiation, which requires five to eight weeks...
Why Prostate Seed Implant? Brachytherapy for prostate cancer is also known as Prostate Seed Implantation (PSI). Brachytherapy is an innovative cancer treatment that places radiation sources or seeds directly inside the prostate allowing for a highly targeted treatment dose to be delivered while limiting...
Seed implant brachytherapy has been widely accepted as a treatment option for localised T1-T2 prostate tumours, a technique in which radioactive sources (seeds) are implanted permanently in the prostate gland. Apart from some patient-related factors such as PSA, Gleason score and clinical stage, ...
From 1984 to 1995, 779 stage T1T2N0 cancer cases were treated with simultaneous radiotherapy with a 125iodine prostate implant followed by external beam radiation. Median pretreatment PSA was 7.7 ng./ml. (range 0.3 to 188). PSA bounce was defined as an increase of 0.1 ng./ml. or greater...
Permanent breastseed implant(PBSI) technique is an exciting novel approach to APBI(57). Similar to a permanent seed implant used to treat prostate cancer, PBSI involves the percutaneous insertion of radioactive seeds (palladium-103 [103Pd]) under US guidance, distributed to deliver the prescribed...
The EUBED of PTV i in the setting of primary 125I implant increased 20–66% when 103Pd and 131Cs were used compared with 125I boost. Decreasing prescription dose by 15% in mixed-isotope implants results in a potential 10% reduction in urethral EUBED with preservation of PTV coverage ...
In this study, different techniques and types of needling and seed implant patterns have been investigated and a robotic system has been designed. Method and Materials: A total of 135 prostate cancer patient cases of permanent seed implant have been investigated in this study. These cases are ...
The optimum timing for conventional postimplant dose evaluation was identified as the time at which a minimum difference between the conventional DVH and the dynamic model DVH was achieved. The analysis was done on 29 prostate seed implant patients for both 125I and 103Pd. The edema magnitude ...
This paper reports on the development of an interactive, intraoperative dose planning system for seed implant brachytherapy in cancer treatment. This syste... AB Rosenfeld,DL Cutajar,MLF Lerch,... - IEEE 被引量: 14发表: 2004年 Prostate brachytherapy seed localization by analysis of multiple projec...