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Conclusions
•
3D
imaging modalities are
essential
for modern brachytherapy.
•
Most convenient: contouring, catheter reconstruction and
calculation on the
same image set
. Registration (moreover
non-rigid one) must be carefully evaluated.
•
CT
is the most available. Caution: the limited
resolution
along
the scan axis. Scout views can help with it.
•
TRUS
is mostly used in intraoperative prostate. Caution: needle
tip
definition. “Free length” can help with it.
•
MRI
T2 has excellent soft tissue definition. Caution:
distortion
.
Phantoms and CT patient data can verify it.
•
Society Recommendations
are available to perform QA/QC
of all these image modalities.
•
TPS applicators
libraries and special markers
can help in
reconstruction to be less sensitive to image resolution and cath.
visibility.