A Film Dosimetry System for Use in Computed Tomography

Radiology ◽  
1978 ◽  
Vol 127 (1) ◽  
pp. 255-258 ◽  
Author(s):  
Robert L. Dixon ◽  
Kenneth E. Ekstrand
Keyword(s):  
Computed Tomography ◽  
Film Dosimetry ◽  
Dosimetry System

scholarly journals AN AUTOMATED DOSIMETRY SYSTEM FOR COMPUTED TOMOGRAPHY X-RAY SCANNERS USING SILICON P-I-N DIODES.

1980 ◽  
Vol 39 (6) ◽  
pp. 1020 ◽  
Author(s):  
John J. Lanza ◽  
Walter Mauderli ◽  
Lawrence Fitzgerald ◽  
Genevieve Roessler
Keyword(s):  
Computed Tomography ◽  
X Ray ◽  
Dosimetry System

TH-E-BRB-02: Linearization of Dose Response Curve for the Radiochromic Film Dosimetry System

2012 ◽  
Vol 39 (6Part31) ◽  
pp. 4009-4009
Author(s):  
D Lewis ◽  
S Devic ◽  
N Tomic ◽  
S Aldelaijan ◽  
F DeBlois ◽  
...  
Keyword(s):  
Dose Response ◽  
Response Curve ◽  
Dose Response Curve ◽  
Radiochromic Film ◽  
Film Dosimetry ◽  
Dosimetry System

Commissioning and evaluation of a radiochromic EBT3 film dosimetry system

2018 ◽  
Vol 18 (1) ◽  
pp. 55-62
Author(s):  
Muhammad Isa Khan ◽  
Muhammad Bilal Tahir ◽  
Muhammad Rafique ◽  
Tahir Iqbal ◽  
Sabiha Zulfiqar ◽  
...  
Keyword(s):  
Linear Accelerator ◽  
Cost Effective ◽  
World Health Organisation ◽  
Radiochromic Film ◽  
World Health ◽  
Film Dosimetry ◽  
Photon Beams ◽  
Output Measurement ◽  
Ionisation Chamber ◽  
Dosimetry System

AbstractPurposeThis work reports our study to commission a radiochromic film dosimetry system using the timely EBT3 film. We carried out dosimetric evaluations on different characteristics of photon beams (e.g., flatness, symmetry and penumbra) in radiation dose delivery.Materials and MethodsA Varian linear accelerator producing 6 and 15 MV photon beams with 120 multi-leaf collimator was used in this study. PTW ionisation chamber was used to measure the beam characteristics such as symmetry, flatness and penumbra and these measurements were used to commission the radiochormic EBT3 film dosimetry system. The results of irradiated films were analysed using the radiochromic film QA Pro software 2016.ResultsThe measured film doses were analysed at two different colour channels (green and red) using two scanning geometries (i.e., upper or lower side of film facing the scanner light source) at two dose levels (10 and 40 Gy). The difference between the ionisation chamber and film results was found insignificant and within the acceptable range as per the World Health Organisation standard.ConclusionResults of the comparison between the ionisation chamber and film measurements show that our radiochormic EBT3 film dosimetry system is reliable and cost-effective in the output measurement of a linear accelerator. Our measurements confirm that our EBT3 film dosimetry agreed well with the ionisation chamber, and can be used as a re-validation tool for linear accelerator quality control.

scholarly journals EP-1482: Improving accuracy of radiochromic film dosimetry system using control film piece

2016 ◽  
Vol 119 ◽  
pp. S685
Author(s):  
S. Devic ◽  
S. Aldelaijan ◽  
F. Alzorkany ◽  
N. Tomic ◽  
J. Seuntjens ◽  
...  
Keyword(s):  
Radiochromic Film ◽  
Film Dosimetry ◽  
Control Film ◽  
Dosimetry System ◽  
Improving Accuracy

Performance of a near-real-time KBr:Eu dosimetry system under computed tomography x-rays

2010 ◽  
Vol 45 (3-6) ◽  
pp. 663-667 ◽  
Author(s):  
David Klein ◽  
David W. Peakheart ◽  
Stephen W.S. McKeever
Keyword(s):  
Computed Tomography ◽  
Real Time ◽  
X Rays ◽  
Dosimetry System

Linearization of dose-response curve of the radiochromic film dosimetry system

2012 ◽  
Vol 39 (8) ◽  
pp. 4850-4857 ◽  
Author(s):  
Slobodan Devic ◽  
Nada Tomic ◽  
Saad Aldelaijan ◽  
Francois DeBlois ◽  
Jan Seuntjens ◽  
...  
Keyword(s):  
Dose Response ◽  
Response Curve ◽  
Dose Response Curve ◽  
Radiochromic Film ◽  
Film Dosimetry ◽  
Dosimetry System

scholarly journals Radiochromic film dosimetry in synchrotron radiation breast computed tomography: a phantom study

2020 ◽  
Vol 27 (3) ◽  
pp. 762-771
Author(s):  
Giovanni Mettivier ◽  
Marica Masi ◽  
Fulvia Arfelli ◽  
Luca Brombal ◽  
Pasquale Delogu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Synchrotron Radiation ◽  
Radiochromic Film ◽  
Film Dosimetry ◽  
Monitoring Method ◽  
Mean Glandular Dose ◽  
Dose Monitoring ◽  
Full Rotation ◽  
Breast Computed Tomography

This study relates to the INFN project SYRMA-3D for in vivo phase-contrast breast computed tomography using the SYRMEP synchrotron radiation beamline at the ELETTRA facility in Trieste, Italy. This peculiar imaging technique uses a novel dosimetric approach with respect to the standard clinical procedure. In this study, optimization of the acquisition procedure was evaluated in terms of dose delivered to the breast. An offline dose monitoring method was also investigated using radiochromic film dosimetry. Various irradiation geometries have been investigated for scanning the prone patient's pendant breast, simulated by a 14 cm-diameter polymethylmethacrylate cylindrical phantom containing pieces of calibrated radiochromic film type XR-QA2. Films were inserted mid-plane in the phantom, as well as wrapped around its external surface, and irradiated at 38 keV, with an air kerma value that would produce an estimated mean glandular dose of 5 mGy for a 14 cm-diameter 50% glandular breast. Axial scans were performed over a full rotation or over 180°. The results point out that a scheme adopting a stepped rotation irradiation represents the best geometry to optimize the dose distribution to the breast. The feasibility of using a piece of calibrated radiochromic film wrapped around a suitable holder around the breast to monitor the scan dose offline is demonstrated.

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