Prostate cancer: MR imaging and thermometry during microwave thermal ablation-initial experience.
Percutaneous interstitial microwave thermoablation of locally recurrent prostate carcinoma was continually guided with magnetic resonance (MR) imaging. Phase images and data were obtained with a rapid gradient-echo technique and were used to derive tissue temperature change on the basis of proton-resonance shift. Thermally devitalized regions correlated well with the phase image findings. MR imaging-derived temperatures were linearly related to the fluoroptic tissue temperatures. MR imaging can be used to guide thermoablation.
Chen
J C
JC
Department of Medical Imaging, Toronto Hospital and the University of Toronto, Ontario, Canada.
Moriarty
J A
JA
Derbyshire
J A
JA
Peters
R D
RD
Trachtenberg
J
J
Bell
S D
SD
Doyle
J
J
Arrelano
R
R
Wright
G A
GA
Henkelman
R M
RM
Hinks
R S
RS
Lok
S Y
SY
Toi
A
A
Kucharczyk
W
W
D000368:Aged; D016477:Artifacts; D006801:Humans; D006979:Hyperthermia, Induced / Q000295:instrumentation*; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008297:Male; D008872:Microwaves; D009364:Neoplasm Recurrence, Local / Q000473:pathology / Q000628:therapy; D009367:Neoplasm Staging; D011467:Prostate / Q000473:pathology; D011471:Prostatic Neoplasms / Q000473:pathology / Q000628:therapy*; D013821:Thermometers; D016896:Treatment Outcome