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Table 4 3D gamma (γ%) values resulted from the comparison of planned and reconstructed dose distribution in 6 planning target volumes (PTVs) and two external (body) from the two plans (upper body and lower body) of every TMI/TMLI patients. 3Dγ values of 3%@3mm from the original plans were obtained with different pitch and modulation factor listed in Table 1, whereas 3Dγ values of 3%@3mm with pich modified to 0.43 from the original plans were also shown here. The 3Dγ values with 2%@2mm from another set of new plans of the same patients with fixed pitch of 0.3 and modulation factor of 3 showed significant improvement in the 3Dγ values 

From: Leaf open time sinogram (LOTS): a novel approach for patient specific quality assurance of total marrow irradiation

Treatment plan Target (PTV) 3Dγ (3%@3mm) from original plans 3Dγ (3%@3mm) from new plans with field width = 5 cm; pitch = 0.43 and modulation factor = same as original plans 3Dγ (2%@2mm) from new plans with field width = 5 cm; pitch = 0.3 and modulation Factor = 3
P11 P12 P13 P14 P15 P11 P12 P13 P14 P15 P11 P12 P13 P14 P15
HFS Brain 90 83 97 97 93 72 96 95 92 99 100 94 97 97 100
Chest 75 28 86 94 41 53 57 68 63 60 100 99 94 100 100
Torso 83 52 94 93 24 60 68 82 51 46 100 98 100 100 100
Limb 85 34 73 55 57 82 50 55 51 44 100 95 97 100 100
Upper body 86 50 91 87 52 67 69 78 63 63 100 97 97 98 100
External upper body 94 68 95 88 75 87 79 88 82 77 100 99 99 100 100
FFS Lower body 100 100 100 100 100           
External lower body 100 100 100 100 100