scholarly journals Investigation of the radiation dose from cone‐beam CT for image‐guided radiotherapy: A comparison of methodologies

2017 ◽  
Vol 19 (1) ◽  
pp. 174-183 ◽  
Author(s):  
Jarryd G. Buckley ◽  
Dean Wilkinson ◽  
Alessandra Malaroda ◽  
Peter Metcalfe
Keyword(s):  
Radiation Dose ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Image Guided Radiotherapy ◽  
Image Guided

4D cone beam CT phase sorting using high frequency optical surface measurement during image guided radiotherapy

2011 ◽  
Author(s):  
G. J. Price ◽  
T. E. Marchant ◽  
J. M. Parkhurst ◽  
P. J. Sharrock ◽  
G. A. Whitfield ◽  
...  
Keyword(s):  
High Frequency ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Surface Measurement ◽  
Optical Surface ◽  
Image Guided Radiotherapy ◽  
Image Guided

scholarly journals Patient-based low dose cone beam CT acquisition settings for prostate image-guided radiotherapy treatments on a Varian TrueBeam linear accelerator

2020 ◽  
Vol 93 (1115) ◽  
pp. 20200412
Author(s):  
Maria Antonietta Piliero ◽  
Margherita Casiraghi ◽  
Davide Giovanni Bosetti ◽  
Simona Cima ◽  
Letizia Deantonio ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Image Quality ◽  
Low Dose ◽  
Cone Beam Ct ◽  
Subjective Evaluation ◽  
Cone Beam ◽  
Low Contrast ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Prostate Cancer Radiotherapy

Objective: To evaluate the performance of low dose cone beam CT (CBCT) acquisition protocols for image-guided radiotherapy of prostate cancer. Methods: CBCT images of patients undergoing prostate cancer radiotherapy were acquired with the settings currently used in our department and two low dose settings at 50% and 63% lower exposure. Four experienced radiation oncologists and two radiation therapy technologists graded the images on five image quality characteristics. The scores were analysed through Visual Grading Regression, using the acquisition settings and the patient size as covariates. Results: The low dose acquisition settings have no impact on the image quality for patients with body profile length at hip level below 100 cm. Conclusions: A reduction of about 60% of the dose is feasible for patients with size below 100 cm. The visibility of low contrast features can be compromised if using the low dose acquisition settings for patients with hip size above 100 cm. Advances in knowledge: Low dose CBCT acquisition protocols for the pelvis, based on subjective evaluation of patient images.

Estimate of the shielding effect on secondary cancer risk due to cone-beam CT in image-guided radiotherapy

2014 ◽  
Vol 65 (5) ◽  
pp. 757-762 ◽  
Author(s):  
Jiwon Sung ◽  
Tae Seong Baek ◽  
Myonggeun Yoon ◽  
Dong Wook Kim ◽  
Dong Hyun Kim
Keyword(s):  
Cancer Risk ◽  
Cone Beam Ct ◽  
Shielding Effect ◽  
Cone Beam ◽  
Secondary Cancer ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Secondary Cancer Risk

scholarly journals Evaluation of image guided radiotherapy (IGRT) in lung cancer. Is weekly cone beam CT (CBCT) enough?

2015 ◽  
Vol 115 ◽  
pp. VII
Author(s):  
J. Luna Tirado ◽  
M. Rincón Pérez ◽  
J.P. Marín Arango ◽  
S. Gómez-Tejedor Alonso ◽  
I. Prieto Muñoz ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Image Guided Radiotherapy ◽  
Image Guided

Towards optimization of megavoltage cone-beam CT for image-guided radiotherapy

2004 ◽  
Vol 60 ◽  
pp. S623-S623 ◽  
Author(s):  
G PANG ◽  
P OBRIEN ◽  
X MEI ◽  
M TAMBASCO ◽  
C YEBOAH ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Megavoltage Cone Beam Ct
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