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Page 4 of 10 Bieu et al. Hepatoma Res 2020;6:49 I http://dx.doi.org/10.20517/2394-5079.2020.39

Figure 1. SBRT treatment plan and 100% dose color wash (with courtesy of Department of Radiation Oncology and Radiosurgery,
Military Central Hospital 108). SBRT: stereotactic body radiation therapy

Table 2. SBRT treatment plan parameters
3
Structures Volume (cm ) Min dose (Gy) Max dose (Gy) Mean dose (Gy)
ITV 130 43.97 68.31 55.62
PTV 201.3 34.68 68.31 53.44
Liver 1235.1 0.26 66.46 17.11
Normal liver 1112.5 0.26 65.93 12.87
Gallbladder 28.9 3.03 24.42 12.43
Duodenum 40 0.26 8.08 2.3
Stomach 265.5 0.26 5.4 2.3
Jejunum 327.8 0.08 2.8 0.5
Ileum 769.3 0.07 14.62 1.14
Esophagus 12 3.43 8.54 5.65
Lung 888.9 0.13 65.98 3.81
Heart 359.3 0.19 8.9 2.16
Spinal cord 35.9 0.03 7.48 2.08
Right kidney 129.2 0.14 2.02 0.53
Left kidney 134.3 0.05 0.48 0.17
SBRT: stereotactic body radiation therapy; ITV: internal target volume; PTV: planning target volume

monitor patient movement during treatment. The patient’s position was verified by cone-beam CT before
each fraction. After the verification was done, the linac was beamed on to treat the patient. Total treatment