Journal of Radiation Research and Radiation Processing, Volume. 40, Issue 5, 050303(2022)
Rectal and bladder dose prediction in volumetric modulated arc therapy for cervical cancer based on dose-volume histogram
Figures & Tables(6)
Fig. 1. Relationship between the intersection volume and the expansion distance: (a) 3D visualization; (b) the cross-sectional schematic diagram (the rectum for an example, as is similar to bladder) (color online)
Fig. 3. Comparison of predicted and actual values: (a) bladder V40; (b) bladder D33; (c) rectum V40; (d) rectum D33
Fig. 4. Prediction relative error of validation set (color online)
Table 1. Dose limit of organs at risks
View tableView in ArticleTable 1. Dose limit of organs at risks
危及器官
Organs at risk
剂量体积限值
Dose volume limit
膀胱Bladder V40<60% D33<45Gy 直肠Rectum V40<60% D33<45Gy 左股骨头Femoral head_left V45<5% V30<30% 右股骨头Femoral head_right V45<5% V30<30% 小肠Small bowel V30<30% 脊髓Spinal cord Dmax<45 Gy
Table 2. Multivariate nonlinear regression model coefficients for predicting bladder and rectum dose
View tableView in ArticleTable 2. Multivariate nonlinear regression model coefficients for predicting bladder and rectum dose
系数 Coefficient 膀胱 Bladder V40 膀胱 Bladder D33 直肠 Rectum V40 直肠 Rectum D33 C0 3.60 3 362.40 25.96 3 401.62 C1 -30.10 -682.54 -10.64 -389.58 C2 0.66 -3.09 0.12 12.27 C3 0.66 10.36 0.60 8.57 C4 -22.15 -666.55 -0.68 -216.20 C5 0.00 -21.54 0.24 0.51 C6 -0.20 -1.36 -0.16 -2.54 C7 -133.99 -3 560.82 -46.59 -2 332.70 C8 4.74 -6.27 -2.08 -133.89 C9 10.48 225.24 3.96 123.89 C10 190.09 5 346.39 59.62 3 215.10 C11 -0.99 72.56 2.07 244.57 C12 -13.48 -409.14 -3.73 -230.82 C13 9.67 113.14 12.82 460.62 C14 6.22 154.24 1.87 192.86 C15 -13.50 -266.78 -7.52 -279.44 C16 -54.99 -1 571.39 -16.95 -1 068.73 C17 -0.18 169.40 2.86 378.12 C18 -5.05 -70.14 -3.67 112.73 C19 -2.90 -39.86 -2.74 -703.22 C20 11.37 -113.32 6.63 -138.03 C21 -4.12 -203.70 -7.59 217.48
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Ping ZHENG, Dong WANG. Rectal and bladder dose prediction in volumetric modulated arc therapy for cervical cancer based on dose-volume histogram[J]. Journal of Radiation Research and Radiation Processing, 2022, 40(5): 050303
Paper Information
Category: Research Articles
Received: Apr. 2, 2022
Accepted: May. 20, 2022
Published Online: Nov. 3, 2022
The Author Email: Dong WANG (1363030065@qq.com)
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