scholarly journals Geometric and dosimetric evaluation of the differences between rigid and deformable registration to assess interfraction motion during pelvic radiotherapy

2019 ◽  
Vol 9 ◽  
pp. 97-102 ◽  
Author(s):  
Ingrid White ◽  
Dualta McQuaid ◽  
Helen McNair ◽  
Alex Dunlop ◽  
Steven Court ◽  
...  
Keyword(s):  
Deformable Registration ◽  
Pelvic Radiotherapy ◽  
Interfraction Motion

Deformable registration-based segmentation of the bowel on Megavoltage CT during pelvic radiotherapy

2016 ◽  
Vol 32 (7) ◽  
pp. 898-904 ◽  
Author(s):  
L. Perna ◽  
C. Sini ◽  
C. Cozzarini ◽  
G. Agnello ◽  
G.M. Cattaneo ◽  
...  
Keyword(s):  
Deformable Registration ◽  
Pelvic Radiotherapy ◽  
Megavoltage Ct

scholarly journals The impact of radical pelvic radiotherapy on nutrient intake

2008 ◽  
Vol 67 (OCE3) ◽  
Author(s):  
H. E. Armitage ◽  
C. McGough ◽  
L. Wedlake ◽  
K. Whelan ◽  
H. J. N. Andreyev
Keyword(s):  
Nutrient Intake ◽  
Pelvic Radiotherapy ◽  
The Impact

scholarly journals Quantitative Assessment of Shape Deformation of Regional Cranial Bone for Evaluation of Surgical Effect in Patients with Craniosynostosis

2021 ◽  
Vol 11 (3) ◽  
pp. 990
Author(s):  
Min Jin Lee ◽  
Helen Hong ◽  
Kyu Won Shim
Keyword(s):  
Quantitative Assessment ◽  
Deformable Registration ◽  
Occipital Bone ◽  
Cranial Bone ◽  
Shape Deformation ◽  
Surface Model ◽  
Cephalic Index ◽  
Skull Shape ◽  
Quantification Method ◽  
Parietal Bones

Surgery in patients with craniosynostosis is a common treatment to correct the deformed skull shape, and it is necessary to verify the surgical effect of correction on the regional cranial bone. We propose a quantification method for evaluating surgical effects on regional cranial bones by comparing preoperative and postoperative skull shapes. To divide preoperative and postoperative skulls into two frontal bones, two parietal bones, and the occipital bone, and to estimate the shape deformation of regional cranial bones between the preoperative and postoperative skulls, an age-matched mean-normal skull surface model already divided into five bones is deformed into a preoperative skull, and a deformed mean-normal skull surface model is redeformed into a postoperative skull. To quantify the degree of the expansion and reduction of regional cranial bones after surgery, expansion and reduction indices of the five cranial bones are calculated using the deformable registration as deformation information. The proposed quantification method overcomes the quantification difficulty when using the traditional cephalic index(CI) by analyzing regional cranial bones and provides useful information for quantifying the surgical effects of craniosynostosis patients with symmetric and asymmetric deformities.

scholarly journals Efficacy of the Treatment of Intraperitoneal Bladder Perforation during Transurethral Resection of Bladder Tumor with the Urethral Catheter Alone: Retrospective Analysis of over 15 Years Using the Clinical Data Warehouse System

2021 ◽  
pp. 1-9
Author(s):  
Junghoon Lee ◽  
Jungyo Suh ◽  
Chang Wook Jeong ◽  
Cheol Kwak ◽  
Hyeon Hoe Kim ◽  
...  
Keyword(s):  
Data Warehouse ◽  
Bladder Tumor ◽  
Matched Control ◽  
Foley Catheter ◽  
Progression Free Survival ◽  
Urethral Catheter ◽  
Recurrence Free Survival ◽  
Pelvic Radiotherapy ◽  
Free Survival ◽  
Clinical Data Warehouse

<b><i>Introduction:</i></b> We investigated the efficacy of a urethral catheter alone for intraperitoneal perforation during transurethral resection of bladder tumor (TURBT). <b><i>Patients and Methods:</i></b> We retrospectively evaluated the medical records of 4,543 patients who underwent TURBT from January 2000 to December 2017 using the Clinical Data Warehouse system. The clinicopathologic characteristics, recurrence-free survival, and progression-free survival were compared between the patient groups with intraperitoneal perforation treated with the Foley catheter alone, extraperitoneal perforation, and matched control TURBT. <b><i>Results:</i></b> Intraperitoneal perforation and extraperitoneal perforation were observed in 16 (35.6%) and 29 (64.4%) patients, respectively. In the intraperitoneal perforation group, 11 (68.8%), 2 (12.5%), and 3 (18.8%) patients were treated with the Foley catheter alone, additional percutaneous drainage, and delayed open surgery, respectively. The use of the Foley catheter alone in patients with intraperitoneal perforation of smaller size than the cystoscope or no pelvic radiotherapy history showed improved efficacy without sequelae or therapeutic delay. One of the 2 patients with the size of the intraperitoneal perforation larger than the cystoscope was successfully treated with the Foley catheter alone, whereas the other patient underwent delayed surgical repair. There was no difference in recurrence-free survival and progression-free survival of the intraperitoneal perforation treated with the Foley catheter alone compared to those of the matched control TURBT (<i>p</i> = 0.909, <i>p</i> = 0.518) and the extraperitoneal perforation (<i>p</i> = 0.458, <i>p</i> = 0.699). <b><i>Conclusions:</i></b> Intraperitoneal perforation rarely occurred during TURBT. In the case of intraperitoneal perforation of size smaller than cystoscopy or without pelvic radiotherapy history, treatment with the Foley alone showed successful improvement and safe oncological results. Therefore, treatment with the urethral catheter alone can be carefully considered when an intraperitoneal perforation smaller than the cystoscope size or without pelvic radiotherapy history occurs.

In Defence of RANSAC for Outlier Rejection in Deformable Registration

2012 ◽  
pp. 274-287 ◽  
Author(s):  
Quoc-Huy Tran ◽  
Tat-Jun Chin ◽  
Gustavo Carneiro ◽  
Michael S. Brown ◽  
David Suter
Keyword(s):  
Deformable Registration ◽  
Outlier Rejection
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