Premium
Magnetic Resonance Imaging of Microwave Induced Tissue Heating
Author(s) -
Schwarzmaier HansJoachim,
Kahn Thomas
Publication year - 1995
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910330519
Subject(s) - magnetic resonance imaging , microwave , materials science , nuclear magnetic resonance , biomedical engineering , microwave heating , flash (photography) , irradiation , parabolic antenna , dielectric heating , microwave irradiation , nuclear medicine , medicine , radiology , optics , physics , quantum mechanics , nuclear physics
MR‐guided interstitial thermotherapy offers a minimally invasive treatment for localized tumors and tissue structures exhibiting functional abnormalities. In this study, microwaves (2.45 GHz) were used for tissue irradiation to overcome some limitations of the heating sources used so far. To this end, a microwave antenna was positioned in a specimen of porcine myocardium and irradiated for 10 min under MRI control using a T 1 ‐weighted FLASH sequence. The heating procedure resulted in a spherical tissue lesion of 26 mm in diameter. Thus, we could demonstrate the feasibility to monitor the microwave‐induced coagulation process by MR‐imaging in vitro.