Title :
MRI-compatible ultrasonic probe for minimally invasive therapy
Author :
Azuma, Takashi ; Sasaki, Kazuaki ; Kawabata, Ken-ichi ; Osada, Akiko ; Itagaki, Hiroyuki ; Komura, Kazumi ; Takahashi, Tetsuhiko ; Ishida, Kazunari ; Satoh, Yutaka ; Umemura, Shin-ichiro
Author_Institution :
Central Res. Lab., Hitachi Ltd., Kokubunji, Japan
Abstract :
The effects of magnetic resonance imaging (MRI)-compatible ultrasound (US) probes on MRI monitoring were evaluated. It was found that MRI-compatible US probes with backing material containing 100 ppm ferrite, did not disturb MR monitoring except within a few mm radius from the US probe´s position. MRI temperature monitoring of an excised swine liver irradiated with a high-intensity focused US beam from an MRI-compatible therapeutic transducer with US image guidance was then performed, and the potential usefulness of such a therapeutic system in minimally invasive therapy was demonstrated.
Keywords :
biomedical MRI; biomedical transducers; biomedical ultrasonics; liver; patient monitoring; probes; radiation therapy; surgery; temperature measurement; ultrasonic transducers; MR monitoring; MRI-compatible therapeutic transducer; MRI-compatible ultrasonic probe; US image guidance; backing material; excised swine liver; ferrite; high-intensity focused US beam; magnetic resonance monitoring; minimally invasive therapy; surgery time minimization; Ferrites; Magnetic materials; Magnetic resonance imaging; Medical treatment; Minimally invasive surgery; Monitoring; Probes; Temperature measurement; Temperature sensors; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
Print_ISBN :
0-7803-7582-3
DOI :
10.1109/ULTSYM.2002.1192573
