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Table 2 Anatomical differences between MRI and CT Datasets

From: Evaluating organ delineation, dose calculation and daily localization in an open-MRI simulation workflow for prostate cancer patients

  Prostate Seminal Vesicles Penile Bulb CTV (prostate + seminal vesicles)
  MRI vol (cc) CT vol (cc) MRI vol (cc) CT vol (cc) MRI vol (cc) CT vol (cc) MRI vol (cc) CT vol (cc)
Patient 1 79.46 89.63 16.43 19.96 2.63 3.02 95.89 109.59
Patient 2 83.70 131.00 18.23 7.66 12.98 12.02 101.93 138.66
Patient 3 37.84 56.44 16.22 14.19 3.95 4.45 54.06 70.63
Patient 4 84.20 117.60 11.17 16.47 5.25 8.76 95.37 134.07
Patient 5 26.81 45.14 6.85 9.02 1.95 4.98 33.66 54.16
Patient 6 31.78 50.20 26.59 15.37 4.04 7.15 58.37 65.57
Patient 7 38.94 44.46 22.92 17.27 3.64 4.93 61.86 61.73
Patient 8 30.82 42.13 8.80 5.24 3.44 0.55 39.62 47.37
Patient 9 32.03 42.50 9.44 12.64 2.81 4.74 41.47 55.14
Patient 10 31.76 40.83 14.26 18.02 1.58 5.87 46.02 58.85
%Diff (CT to MRI) 39.7% −1.7% 61.1% 27.5%
St Dev 18.5% 38.1% 96.8% 17.1%
P value 0.002 0.454 0.074 0.002