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Table 1 Average covering ratios of the stomach based on skin, bone, and 4D soft-tissue matching according to PTV structures of 5, 10, 15, 20, 25, and 30 mm margins for eight patients

From: Impact of four-dimensional cone-beam computed tomography on target localization for gastric mucosa-associated lymphoid tissue lymphoma radiotherapy: reducing planning target volume

PTV structure (mm) Covering ratio (%) P value
Skin matching Bone matching 4D soft-tissue matching
5 17.9 19.6 33.8 0.323
10 53.8 52.8 76.7 0.053
15 82.5 79.7 98.0 0.003
20 95.2 93.4 99.4 0.186
25 99.2 99.1 100.0 0.320
30 100.0 99.8 100.0 0.368