A Feasibility Study of Ultra-Short Echo Time MRI for Positive Contrast Visualization of Prostate Brachytherapy Permanent Seed Implants for Post-Implant Dosimetry

A Feasibility Study of Ultra-short Echo Time Mri for Positive Contrast Visualization of Prostate Brachytherapy Permanent Seed Implants for Post-implant Dosimetry

ii ACKNOWLEDGMENTS I thank Dr. Jiang Du for his assistance with the UTE protocol used in this work. I also thank Randy Deen, MR technologist at PBRC, for his frequent assistance with data collection and his willingness to lend his knowledge and time. I express my gratefulness to my advisor, Dr. Kip Matthews, for sharing his expertise and for his attention to detail each time he reviewed a draft...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Seed implant brachytherapy for prostate cancer.

Effect of constipation on dosimetry after permanent seed brachytherapy for prostate cancer.

PURPOSE A major concern in prostate brachytherapy is rectal toxicity, which mainly depends on the dose and volume of rectum involved by radiation. We hypothesize that the rectal distension, as produced by constipation, influences the dosimetric parameters of the rectum and other pelvic organs. MATERIAL AND METHODS An open, controlled, prospective, paired trial (pre-post test) was designed and...

Improved dosimetry in prostate brachytherapy using high resolution contrast enhanced magnetic resonance imaging: a feasibility study

PURPOSE To assess detailed dosimetry data for prostate and clinical relevant intra- and peri-prostatic structures including neurovascular bundles (NVB), urethra, and penile bulb (PB) from postbrachytherapy computed tomography (CT) versus high resolution contrast enhanced magnetic resonance imaging (HR-CEMRI). MATERIAL AND METHODS Eleven postbrachytherapy prostate cancer patients underwent HR-...