scholarly journals Image artifacts caused by incorrect bowtie filters in cone‐beam CT image‐guided radiotherapy

2020 ◽  
Vol 21 (7) ◽  
pp. 153-159
Author(s):  
Yanan Cao ◽  
Tianjun Ma ◽  
Steven F. Boer ◽  
Iris Z. Wang
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Image Artifacts ◽  
Ct Image ◽  
Image Guided Radiotherapy ◽  
Image Guided

Ultrasound versus Cone-beam CT image-guided radiotherapy for prostate and post-prostatectomy pretreatment localization

2015 ◽  
Vol 31 (8) ◽  
pp. 997-1004 ◽  
Author(s):  
Marie Fargier-Voiron ◽  
Benoît Presles ◽  
Pascal Pommier ◽  
Alexandre Munoz ◽  
Simon Rit ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Image ◽  
Image Guided Radiotherapy ◽  
Image Guided

Residual rotational set-up errors after daily cone-beam CT image guided radiotherapy of locally advanced cervical cancer

2012 ◽  
Vol 105 (2) ◽  
pp. 220-225 ◽  
Author(s):  
Louise Vagner Laursen ◽  
Ulrik Vindelev Elstrøm ◽  
Anne Vestergaard ◽  
Ludvig P. Muren ◽  
Jørgen Baltzer Petersen ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Cone Beam Ct ◽  
Locally Advanced ◽  
Cone Beam ◽  
Ct Image ◽  
Advanced Cervical Cancer ◽  
Image Guided Radiotherapy ◽  
Locally Advanced Cervical Cancer ◽  
Image Guided ◽  
Set Up

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.

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

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
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