scholarly journals Set-Up Errors Detected By 3D Optical Surface Monitoring System Positively Correlate with Cone Beam CT Values.

2017 ◽  
Vol 99 (2) ◽  
pp. E702
Author(s):  
A. Nachankar ◽  
R. Patil ◽  
P. Dandekar ◽  
V. Mhatre ◽  
P.T. Patwe
Keyword(s):  
Monitoring System ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Optical Surface ◽  
Surface Monitoring ◽  
Set Up

scholarly journals Innovative Non-Irradiating and Non-Invasive Per Fraction Control System in Radiotherapy: Surface-Guided Radiation Therapy Experience of Casablanca Cancer Center

2021 ◽  
Vol 9 (B) ◽  
pp. 826-830
Author(s):  
Asmaa Naim ◽  
Safae Mansouri ◽  
Kamal Saidi ◽  
Redouane ELBaydaoui ◽  
Mohamed Reda Mesradi
Keyword(s):  
Monitoring System ◽  
Treatment Session ◽  
Added Value ◽  
Cone Beam ◽  
Cancer Center ◽  
Conventional Imaging ◽  
Optical Surface ◽  
Non Invasive ◽  
Cone Beam Computerized Tomography ◽  
Surface Monitoring

Purpose: Evaluation of the added value of radiotherapy guided by the cutaneous   surface in the positioning and monitoring of the radiotherapy   Patients and Methods: This study included 21 consecutive patients treated with an   accelerator dedicated to "True Beam®" stereotactic radiotherapy whose sessions were   monitored by an Optical Surface Monitoring System: "OSMS®". Excluded from our   study were treatments controlled exclusively by radiological imaging (IGRT).   Positioning variabilities were compared between conventional imaging and skin   surface infrared (OSMS) monitoring. Conventional imaging was in the form of   standard radiography (KV) performed during the treatment session or three-   dimensional by a series of Cone Beam computerized tomography (CBCT) scanned   images made at the beginning and end of The total time of the session and   the positioning variability’s in the 3 planes were   14   Results: The results of our study show that the cutaneous surface monitoring allowed   to obtain a faster alignment of the patient with an improvement in the overall time of   the session with a mean at 32% [14.5-49.27%], likewise a sub-millimeter positioning   quality for all locations with a median longitudinal distance of 0.02 cm [0-0.66], 01   cm verticality [0-0.32] and laterality 0.02 cm [0-0.77] This benefit is significantly   greater for cerebral and Head and neck’s localizations   21   Conclusion: Optical Surface Monitoring System (OSMS®) is a non-invasive and non-   irradiating means that allows reliable and fast  

scholarly journals A Method to Improve Electron Density Measurement of Cone-Beam CT Using Dual Energy Technique

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Kuo Men ◽  
Jian-Rong Dai ◽  
Ming-Hui Li ◽  
Xin-Yuan Chen ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Electron Density ◽  
Cone Beam Ct ◽  
Density Measurement ◽  
Dual Energy ◽  
Cone Beam ◽  
Imaging Method ◽  
Basis Material ◽  
X Ray ◽  
Dual Energy Imaging ◽  
Set Up

Purpose. To develop a dual energy imaging method to improve the accuracy of electron density measurement with a cone-beam CT (CBCT) device.Materials and Methods. The imaging system is the XVI CBCT system on Elekta Synergy linac. Projection data were acquired with the high and low energy X-ray, respectively, to set up a basis material decomposition model. Virtual phantom simulation and phantoms experiments were carried out for quantitative evaluation of the method. Phantoms were also scanned twice with the high and low energy X-ray, respectively. The data were decomposed into projections of the two basis material coefficients according to the model set up earlier. The two sets of decomposed projections were used to reconstruct CBCT images of the basis material coefficients. Then, the images of electron densities were calculated with these CBCT images.Results. The difference between the calculated and theoretical values was within 2% and the correlation coefficient of them was about 1.0. The dual energy imaging method obtained more accurate electron density values and reduced the beam hardening artifacts obviously.Conclusion. A novel dual energy CBCT imaging method to calculate the electron densities was developed. It can acquire more accurate values and provide a platform potentially for dose calculation.

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 EP-2113: Clinical implementation of an optical surface monitoring system(OSMS®, Varian) in breast irradiation

2016 ◽  
Vol 119 ◽  
pp. S993
Author(s):  
A. Tini ◽  
I. Pytko ◽  
S. Lang ◽  
C. Winter ◽  
M. Guckenberger ◽  
...  
Keyword(s):  
Monitoring System ◽  
Breast Irradiation ◽  
Optical Surface ◽  
Clinical Implementation ◽  
Surface Monitoring

scholarly journals EP-1671: Accuracy evaluation of the Optical Surface Monitoring System on EDGE linear accelerator for patient positioning

2015 ◽  
Vol 115 ◽  
pp. S915-S916
Author(s):  
V. Palumbo ◽  
P. Mancosu ◽  
A. Stravato ◽  
A.M. Ascolese ◽  
A. Fogliata ◽  
...  
Keyword(s):  
Monitoring System ◽  
Linear Accelerator ◽  
Patient Positioning ◽  
Accuracy Evaluation ◽  
Optical Surface ◽  
Surface Monitoring

scholarly journals OC-0194: Evaluation of an optical surface monitoring system for intrafractional movement during SABR

2018 ◽  
Vol 127 ◽  
pp. S104-S105
Author(s):  
C. Mercier ◽  
A. Sprangers ◽  
D. Verellen
Keyword(s):  
Monitoring System ◽  
Optical Surface ◽  
Surface Monitoring
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