TABLE 3

Calculated TLD-to-CTDIvol Ratios for Abdominal and Pelvic Regions

90 kVp120 kVp140 kVp
mAsTDLCTDIvolRatioTDLCTDIvolRatioTDLCTDIvolRatio
Liver
 251.400.801.763.641.802.025.372.701.99
 502.991.501.997.413.502.1210.695.501.94
 1006.163.002.0513.887.001.9821.0111.001.91
 1509.294.602.0222.1310.602.0930.8216.501.87
 20011.196.101.8329.8114.102.1142.0422.001.91
 25014.807.601.9532.6417.601.8550.0827.501.82
 30018.239.102.0043.2321.102.0562.1932.901.89
Kidney1.360.801.693.311.801.845.032.701.86
 252.811.501.885.553.501.599.465.501.72
 505.293.001.7613.457.001.9220.0811.001.83
 1008.594.601.8717.4610.601.6529.8616.501.81
 1509.996.101.6425.2114.101.7939.0722.001.78
 20014.187.601.8728.4217.601.6147.7127.501.73
 25016.059.101.7637.8121.101.7958.6432.901.78
 3001.360.801.693.311.801.845.032.701.86
Small intestine
 251.140.801.432.921.801.624.162.701.54
 502.461.501.645.603.501.609.155.501.66
 1004.783.001.5911.847.001.6916.4911.001.50
 1507.294.601.5817.6510.601.6725.0816.501.52
 2009.696.101.5922.7214.101.6134.5822.001.57
 25012.187.601.6028.8217.601.6444.2327.501.61
 30013.819.101.5234.9421.101.6650.7532.901.54
Large intestine
 251.060.801.322.641.801.473.852.701.43
 502.211.501.475.503.501.578.935.501.62
 1004.503.001.5011.157.001.5916.0211.001.46
 1506.334.601.3815.2710.601.4424.4116.501.48
 2009.086.101.4922.8114.101.6232.3622.001.47
 25011.217.601.4827.2717.601.5540.5227.501.47
 30013.299.101.4631.5921.101.5045.0232.901.37
Ovary
 250.900.801.132.301.801.283.592.701.33
 501.791.501.194.823.501.387.375.501.34
 1003.723.001.249.097.001.3014.5211.001.32
 1505.384.601.1714.4410.601.3620.5716.501.25
 2008.206.101.3419.0114.101.3531.5422.001.43
 2509.067.601.1923.8017.601.3535.2327.501.28
 30011.229.101.2329.9921.101.4241.9032.901.27
Urinary bladder
 251.070.801.342.561.801.424.112.701.52
 502.131.501.425.523.501.588.175.501.49
 1004.353.001.4510.477.001.5016.2111.001.47
 1506.014.601.3116.6810.601.5722.6616.501.37
 2007.616.101.2520.3414.101.4433.1422.001.51
 25010.297.601.3525.4117.601.4438.6427.501.41
 30013.099.101.4430.5521.101.4544.2332.901.34
Red bone marrow
 251.110.801.382.921.801.624.332.701.60
 502.291.501.535.553.501.598.725.501.58
 1004.653.001.5510.837.001.5517.8811.001.63
 1506.844.601.4916.8310.601.5924.5516.501.49
 2008.596.101.4123.3214.101.6536.5622.001.66
 25011.027.601.4526.9917.601.5342.1427.501.53
 30013.249.101.4533.5021.101.5952.0732.901.58
Muscle
 251.280.801.603.191.801.774.292.701.59
 502.681.501.796.393.501.839.645.501.75
 1005.603.001.8711.937.001.7020.3511.001.85
 1508.174.601.7818.9410.601.7929.4116.501.78
 20010.906.101.7925.1514.101.7838.0422.001.73
 25013.117.601.7231.0917.601.7745.1427.501.64
 30016.939.101.8640.7821.101.9354.4032.901.65
Pelvic skin
 251.230.801.532.691.801.494.002.701.48
 502.341.501.565.523.501.588.565.501.56
 1004.733.001.5810.217.001.4615.2411.001.39
 1507.554.601.6415.3410.601.4521.4116.501.30
 2007.876.101.2920.2914.101.4429.4922.001.34
 25012.147.601.6024.9317.601.4238.5827.501.40
 30013.899.101.5330.8421.101.4644.1032.901.34
  • Data are milligrays.