TY - GEN
T1 - Influence of Attenuation Coefficient and Exit Gap on EPID Measurement in Radiotherapy
AU - Li, Ning
AU - Zhang, Jun
AU - Juan, Yingchang
AU - Wen, Junhai
N1 - Publisher Copyright:
© 2021 ACM.
PY - 2021/11/19
Y1 - 2021/11/19
N2 - In order to improve the safety and treatment quality of patients in radiotherapy, it is necessary to verify the dose delivery in radiotherapy. EPID has the advantages of fast acquisition speed, large imaging area, high resolution, good linear response and long-term stability, and has been used in the quality verification of radiotherapy. EPID is used to place under the patient during in vivo dose verification. The distance between the patient and the EPID will affect the pixel value of the EPID. In order to accurately use EPID for radiation therapy dose verification, we used a series of measurement data to model the attenuation coefficient and exit gap of the EPID. The EPID transmission image calculated using the modeling data is compared with the actual measured EPID transmission image to verify the accuracy of the model.
AB - In order to improve the safety and treatment quality of patients in radiotherapy, it is necessary to verify the dose delivery in radiotherapy. EPID has the advantages of fast acquisition speed, large imaging area, high resolution, good linear response and long-term stability, and has been used in the quality verification of radiotherapy. EPID is used to place under the patient during in vivo dose verification. The distance between the patient and the EPID will affect the pixel value of the EPID. In order to accurately use EPID for radiation therapy dose verification, we used a series of measurement data to model the attenuation coefficient and exit gap of the EPID. The EPID transmission image calculated using the modeling data is compared with the actual measured EPID transmission image to verify the accuracy of the model.
UR - http://www.scopus.com/inward/record.url?scp=85127177338&partnerID=8YFLogxK
U2 - 10.1145/3503961.3503974
DO - 10.1145/3503961.3503974
M3 - Conference contribution
AN - SCOPUS:85127177338
T3 - ACM International Conference Proceeding Series
SP - 78
EP - 84
BT - VSIP 2021 - Proceedings of 2021 3rd International Conference on Video, Signal and Image Processing
PB - Association for Computing Machinery
T2 - 3rd International Conference on Video, Signal and Image Processing, VSIP 2021
Y2 - 19 November 2021 through 21 November 2021
ER -