Surface dose measurements in chest wall postmastectomy radiotherapy to achieve optimal dose delivery with 6 MV photon beam

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Challapalli Srinivas ◽  
Dilson Lobo ◽  
Sourjya Banerjee ◽  
MS Athiyamaan ◽  
Shreyas Reddy ◽  
...  
Keyword(s):  
Chest Wall ◽  
Optimal Dose ◽  
Photon Beam ◽  
Surface Dose ◽  
Dose Delivery ◽  
Postmastectomy Radiotherapy ◽  
Dose Measurements

scholarly journals Clinical implementation of brass mesh bolus for chest wall postmastectomy radiotherapy and film dosimetry for surface dose estimates

2019 ◽  
Vol 15 (5) ◽  
pp. 1042
Author(s):  
Sourjya Banerjee ◽  
Dilson Lobo ◽  
PU Saxena ◽  
Ramamoorthy Ravichandran ◽  
Challapalli Srinivas ◽  
...  
Keyword(s):  
Chest Wall ◽  
Surface Dose ◽  
Film Dosimetry ◽  
Clinical Implementation ◽  
Postmastectomy Radiotherapy

scholarly journals Surface Dose for Five Telecobalt Machines, 6MV Photon Beam from Four Linear Accelerators and a Hi-Art TomoTherapy

2008 ◽  
Vol 7 (5) ◽  
pp. 381-384 ◽  
Author(s):  
Rajesh A. Kinhikar
Keyword(s):  
Linear Accelerator ◽  
Photon Beam ◽  
Field Size ◽  
Surface Dose ◽  
Linear Accelerators ◽  
Thermoluminescent Dosimeters ◽  
Medical Technologies ◽  
Dose Measurements ◽  
Good Agreement

The purpose of this study was to estimate the surface dose for five telecobalt machines (four from Best Theratronics Limited, Canada, one from Panacea Medical Technologies, India), 6 MV photon beam (static) from four linear accelerators (three Varian linear accelerators and one Siemens) and Hi-Art Tomotherapy unit. The surface dose was measured with Thermoluminescent dosimeters in phantom slabs. For Tomotherapy 6 MV beam the surface dose was estimated as 32% while it was 35%, 33%, and 36% for Clinac 6EX, Clinac 2100CD, and Clinac 2100C linear accelerators, respectively. Similarly, the surface dose for 6 MV photon beam from Primus linear accelerator was estimated as 35%. Surface doses from telecobalt machines Equinox-80, Elite-80, Th-780C, Th-780, and Bhabhatron-II was found to be 30%, 29.1%, 27.8%, 29.3%, and 29.9% for 10 cm × 10 field size, respectively. Measured surface dose from all four linear accelerators were in good agreement with that of the Tomotherapy. The surface dose measurements were useful for Tomotherapy to predict the superficial dose during helical IMRT treatments.

Evaluation of the surface dose for total body irradiation (TBI) technique with parallel-opposed anterior posterior geometry

2021 ◽  
pp. 1-5
Author(s):  
Hoseinnezhadzarghani Elham ◽  
Geraily Ghazale ◽  
Sarvin Sarmadi
Keyword(s):  
Chest Wall ◽  
Total Body Irradiation ◽  
Absorbed Dose ◽  
Whole Body ◽  
Wall Region ◽  
Surface Dose ◽  
Total Body ◽  
Electron Boost ◽  
Dose Measurements ◽  
Anterior Posterior

Abstract Aim: Total body irradiation (TBI) is an external radiotherapy technique in which the whole body including the superficial regions is required to receive the therapeutic dose. The purpose of this study is to evaluate the received surface dose during TBI technique. Methods and materials: The anterior/posterior (AP/PA) TBI was implemented with 18-MV photon beam at 312-cm treatment distance for human-like phantom. The GAFCHROMIC-EBT3 films were used for superficial dose measurements. Results and discussion: The percentage of surface-absorbed dose relative to the prescription point for 8 points of measurements was between 102·78–121·48% and 104·51–127·43% at 5 and 10 mm depth, respectively. In the chest wall region due to the presence of lung blocks, the absorbed dose was below the acceptable level, so an electron boost was required to increase the chest wall absorbed dose. Conclusions: According to the results, the implemented technique was able to deliver sufficient dose to the shallow surface of phantom’s body.

Surface dose measurements for highly oblique electron beams

1996 ◽  
Vol 23 (8) ◽  
pp. 1413-1420 ◽  
Author(s):  
P. M. Ostwald ◽  
T. Kron
Keyword(s):  
Electron Beams ◽  
Surface Dose ◽  
Dose Measurements

scholarly journals Dosimetric Evaluation of Chest Wall Superficial Dose With or Without Bolus in Postmastectomy Radiotherapy

2020 ◽  
Vol 108 (3) ◽  
pp. e341-e342
Author(s):  
C.H.D. Wu ◽  
K. Long ◽  
N. Logie ◽  
P. Craighead ◽  
S. Quirk ◽  
...  
Keyword(s):  
Chest Wall ◽  
Postmastectomy Radiotherapy

Entrance surface dose measurements using a small OSL dosimeter with a computed tomography scanner having 320 rows of detectors

2016 ◽  
Vol 10 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Kazuki Takegami ◽  
Hiroaki Hayashi ◽  
Kenji Yamada ◽  
Yoshiki Mihara ◽  
Natsumi Kimoto ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Surface Dose ◽  
Entrance Surface Dose ◽  
Osl Dosimeter ◽  
Dose Measurements ◽  
Computed Tomography Scanner
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