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HR-CTV
MRI TRUS-CT Mean
difference of
MRI-CT
Pearson
correlation
coefficient (r)
P-value
Level 1
(Point A)
Mean (
±
SD)
Width
3.4 (
±
1.0) 3.9 (
±
0.9) 0.1 (
±
0.0)
0.75
0.000*
Thickness 3.1 (
±
1.0) 3.0 (
±
0.7) 0.2 (
±
0.6)
0.80
0.000*
Level 2
Mean (
±
SD)
Width
3.7(
±
1.0) 4.0 (
±
0.8) -0.5 (
±
0.6)
0.69
0.000*
Thickness
3.2 (
±
1.0) 3.1 (
±
0.7) 0.2 (
±
0.6)
0.70
0.000*
Level 3
Mean (
±
SD)
Width
3.8 (
±
0.8) 4.1 (
±
0.7) -0.3 (
±
0.5)
0.80
0.000*
Thickness 3.3 (
±
0.7) 3.1 (
±
0.8) -0.4 (
±
0.7)
0.73
0.000*
TRUS assisted HRCTV delineation on CT images
•
Correlation was good when para disease defined at BT
•
With Para Invasion: Overestimation of width on CT
•
Dosimetric Impact: Ongoing