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Computer‐aided gynecologic intracavitary brachytherapy
Author(s) -
Li Shidong
Publication year - 1997
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.598082
Subject(s) - brachytherapy , visualization , computer science , dosimetry , nuclear medicine , radiography , computer vision , overlay , histogram , artificial intelligence , medicine , radiology , radiation therapy , image (mathematics) , programming language
The focus of this thesis is to address ways in which we can more accurately determine and assess the 3D dose in patients. Specifically, methods are developed to (a) reconstruct source positions in a Fletcher‐Suit applicator which do not depend on the visualization of the individual dummy sources, but use applicator geometry; (b) reconstruct 3D locus and sources without requirement of one‐to‐one point correspondence between films; (c) detect, quantify, and adjust for patient motion during acquisition of biplane radiographs; (d) localize source positions from CT ScoutView images; (e) calculate dose and overlay on tomographic images with correction of shielding effect; (f) estimate error in the dose‐volume (or surface) histogram calculation; and (g) investigate methods to combine external and intracavitary dose distributions which provides TCP and NTCPs for the tumor and organs at risk, respectively.