Skip to main content
. 2008 Mar 18;9(2):1–14. doi: 10.1120/jacmp.v9i2.2283

Table 4.

Basic pre‐ and post‐implant dosimetric parameters for the combined‐modality (intensity‐modulated radiation therapy plus brachytherapy seed implant) study group—prescription dose = 95 Gy

Dosimetric parameter Pre‐implant
(n=15)
Post‐implant
(n=15)
p Value
Prostate volume (cm3)
    Mean±SD
35.4±7.7
32.7±9.8
0.38
   Median 35.8 33.4
   Range
20.854.5
19.359.8
D90 (Gy)
    Mean±SD
133.7±10.2
112.2±13.4
<0.001
   Median 133.5 110.5
   Range
120.9150.0
93.0145.0
D100 (Gy)
    Mean±SD
95.5±9.7
81.6±12.2
<0.001
   Median 92.6 75.0
   Range
88.4120.1
75.0110.0
V100 (% prostate volume)
    Mean±SD
99.0±2.7
94.8±3.9
<0.001
   Median 99.7 95.0
   Range
88.473.0
88.0100.0
Maximum urethral dose (Gy)
    Mean±SD
180.6±20.7
168.5±33.4
0.21
   Median 174.0 160.0
   Range
152.4227.2
129.0247.4

SD = standard deviation; D90= dose covering 90% volume; D100= dose covering 100% volume; V100= volume receiving 100% of the prescribed dose.