A deformable image registration method to handle distended rectums in prostate cancer radiotherapy

2006 ◽  
Vol 33 (9) ◽  
pp. 3304-3312 ◽  
Author(s):  
Song Gao ◽  
Lifei Zhang ◽  
He Wang ◽  
Renaud de Crevoisier ◽  
Deborah D. Kuban ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Image Registration ◽  
Deformable Image Registration ◽  
Cancer Radiotherapy ◽  
Registration Method ◽  
Prostate Cancer Radiotherapy

SU-C-17A-03: Evaluation of Deformable Image Registration Methods Between MRI and CT for Prostate Cancer Radiotherapy

2014 ◽  
Vol 41 (6Part2) ◽  
pp. 99-99
Author(s):  
N Wen ◽  
C Glide-Hurst ◽  
H Zhong ◽  
K Chin ◽  
A Kumarasiri ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Image Registration ◽  
Deformable Image Registration ◽  
Cancer Radiotherapy ◽  
Prostate Cancer Radiotherapy

Dose accumulation with deformable image registration method using helical tomotherapy images for prostate cancer

2019 ◽  
Vol 19 (1) ◽  
pp. 25-29
Author(s):  
Warit Thongsuk ◽  
Imjai Chitapanarux ◽  
Somsak Wanwilairat ◽  
Wannapha Nobnop
Keyword(s):  
Prostate Cancer ◽  
Computed Tomography ◽  
Image Registration ◽  
Cancer Patients ◽  
Helical Tomotherapy ◽  
Deformable Image Registration ◽  
High Dose ◽  
Registration Method ◽  
Dose Accumulation ◽  
Dose Volume

AbstractPurpose:To evaluate changes of accumulated doses from an initial plan in each fraction by deformable image registration (DIR) with daily megavoltage computed tomography (MVCT) images from helical tomotherapy for prostate cancer patients.Materials and methods:The MVCT images of five prostate cancer patients were acquired by using a helical tomotherapy unit before the daily treatment fraction began. All images data were exported to DIR procedures by MIM software, in which the planned kilovoltage computed tomography (kVCT) images were acting as the source images with the daily MVCT acquired as the target images for registration. The automatic deformed structure was used to access the volume variation and daily dose accumulation to each structure. All dose-volume parameters were compared to the initial planned dose.Results:The actual median doses of the planning target volume (PTV) received 70 Gy and 50.4 Gy were decreased at the end of the treatment with an average 1·0 ± 0·67% and 2·1 ± 1·54%, respectively. As regards organs at risk (OARs), the bladder and rectum dose-volume parameters tended to increase from the initial plan. The high-dose regions of the bladder and rectum, however, were decreased from the initial plan at the end of the treatment.Conclusions:The daily actual dose differs from the initial planned dose. The accumulated dose of target tends to be lower than the initial plan, but tends to be higher than the initial plan for the OARs. Therefore, inter-fractional anatomic changes should be considered by the DIR methods, which would be useful as clinically informative and beneficial for adaptive treatment strategies.

scholarly journals An adaptive MR-CT registration method for MRI-guided prostate cancer radiotherapy

2015 ◽  
Vol 60 (7) ◽  
pp. 2837-2851 ◽  
Author(s):  
Hualiang Zhong ◽  
Ning Wen ◽  
James J Gordon ◽  
Mohamed A Elshaikh ◽  
Benjamin Movsas ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cancer Radiotherapy ◽  
Registration Method ◽  
Mri Guided ◽  
Prostate Cancer Radiotherapy

scholarly journals Proximal seminal vesicle displacement and margins for prostate cancer radiotherapy

2021 ◽  
Author(s):  
Daryl Lim Joon ◽  
Michael Chao ◽  
Angelina Piccolo ◽  
Michal Schneider ◽  
Nigel Anderson ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Seminal Vesicle ◽  
Cancer Radiotherapy ◽  
Prostate Cancer Radiotherapy

scholarly journals Management of prostate cancer radiotherapy during the COVID-19 pandemic: A necessary paradigm change

2021 ◽  
Vol 27 ◽  
pp. 100331
Author(s):  
Beatrice Detti ◽  
Gianluca Ingrosso ◽  
Carlotta Becherini ◽  
Andrea Lancia ◽  
Emanuela Olmetto ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Paradigm Change ◽  
Cancer Radiotherapy ◽  
Prostate Cancer Radiotherapy

Evaluation of set-up errors and estimation of set-up margin during external beam radiation therapy of prostate cancer using electronic portal imaging device (EPID)

2021 ◽  
pp. 1-8
Author(s):  
Daryoush Khoramian ◽  
Soroush Sistani ◽  
Bagher Farhood
Keyword(s):  
Prostate Cancer ◽  
Radiation Therapy ◽  
Target Volume ◽  
External Beam Radiation ◽  
Beam Radiation ◽  
Cancer Radiotherapy ◽  
Imaging Device ◽  
Portal Images ◽  
Set Up ◽  
Prostate Cancer Radiotherapy

Abstract Aim: In radiation therapy, accurate dose distribution in target volume requires accurate treatment setup. The set-up errors are unwanted and inherent in the treatment process. By achieving these errors, a set-up margin (SM) of clinical target volume (CTV) to planning target volume (PTV) can be determined. In the current study, systematic and random set-up errors that occurred during prostate cancer radiotherapy were measured by an electronic portal imaging device (EPID). The obtained values were used to propose the optimum CTV-to-PTV margin in prostate cancer radiotherapy. Materials and methods: A total of 21 patients with prostate cancer treated with external beam radiation therapy (EBRT) participated in this study. A total of 280 portal images were acquired during 12 months. Gross, population systematic (Σ) and random (σ) errors were obtained based on the portal images in Anterior–Posterior (AP), Medio-Lateral (ML) and Superior–Inferior (SI) directions. The SM of CTV to PTV were then calculated and compared by using the formulas presented by the International Commission on Radiation Units and Measurements (ICRU) 62, Stroom and Heijmen and Van Herk et al. Results: The findings showed that the population systematic errors during prostate cancer radiotherapy in AP, ML and SI directions were 1·40, 1·95 and 1·94 mm, respectively. The population random errors in AP, ML and SI directions were 2·09, 1·85 and 2·29 mm, respectively. The SM of CTV to PTV calculated in accordance with the formula of ICRU 62 in AP, ML and SI directions were 2·51, 2·68 and 3·00 mm, respectively. And according to Stroom and Heijmen, formula were 4·23, 5·19 and 5·48 mm, respectively. And Van Herk et al. formula were 4·96, 6·17 and 6·45 mm, respectively. Findings: The SM of CTV to PTV in all directions, based on the formulas of ICRU 62, Stroom and Heijmen and van Herk et al., were equal to 2·73, 4·98 and 5·86 mm, respectively; these values were obtained by averaging the margins in all directions.

Dosimetric comparison of four target alignment methods for prostate cancer radiotherapy

2006 ◽  
Vol 66 (3) ◽  
pp. 883-891 ◽  
Author(s):  
Jennifer C. O’Daniel ◽  
Lei Dong ◽  
Lifei Zhang ◽  
Renaud de Crevoisier ◽  
He Wang ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cancer Radiotherapy ◽  
Dosimetric Comparison ◽  
Prostate Cancer Radiotherapy
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