MRI
of the prostate after HIFU session (the
whole prostate volume is treated)
Tranversal
plane
Longitudinal
plane
MRI examinations performed early after the HIFU
treatment cannot give a qualitative assessment of the necrosis.
But it allows a precise evaluation of the treated volume as demonstrated
in a clinical trial. Indeed, after gadolinium injection, the treated
area appeared as an hypo-intense area and a surrounding 6-8 mm ring
of contrast enhancement. Biopsies were taken in the ring, and evidenced
also a complete necrosis in this ring.