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Table 2 The comparison of iso-plane dose distributions.

From: Use of kilovoltage X-ray volume imaging in patient dose calculation for head-and-neck and partial brain radiation therapy

Patients Beam index DTA
(3 mm, 3%, 10%)
Pass rate (%)
Gamma index analysis
(2 mm, 2%, 10%, γ<1)
Pass rate (%)
NK/T 1 99.0 100.0
  2 100.0 100.0
  3 99.4 100.0
  4 99.5 100.0
  5 99.2 100.0
NPC 1 97.2 99.5
  2 98.8 99.8
  3 99.8 99.8
  4 98.9 100.0
  5 96.3 99.6
  6 94.5 99.9
  7 99.8 100.0
  8 99.5 100.0
  9 99.0 100.0
Brain Tumor 1 99.7 100.0
  2 99.8 100.0
  3 96.3 100.0
  4 100.0 100.0
  5 100.0 100.0
  1. The comparison of iso-plane dose distributions based on conventional CT and KVCBCT for 3 clinical cases using distance to agreement (DTA) and gamma index analysis in all the beams.