DocumentCode :
802489
Title :
Acoustic radiation force impulse imaging of myocardial radiofrequency ablation: initial in vivo results
Author :
Fahey, Brian J. ; Nightingale, Kathryn R. ; McAleavey, Stephen A. ; Palmeri, Mark L. ; Wolf, Patrick D. ; Trahey, Gregg E.
Author_Institution :
Dept. of Biomedical Eng., Duke Univ., Durham, NC, USA
Volume :
52
Issue :
4
fYear :
2005
fDate :
4/1/2005 12:00:00 AM
Firstpage :
631
Lastpage :
641
Abstract :
Acoustic radiation force impulse (ARFI) imaging techniques were used to monitor radiofrequency (RF) ablation of ovine cardiac tissue in vivo. Additionally, ARFI M-mode imaging methods were used to interrogate both healthy and ablated regions of myocardial tissue. Although induced cardiac lesions were not visualized well in conventional B-mode images, ARFI images of ablation procedures allowed determination of lesion location, shape, and relative size through time. The ARFI M-mode images were capable of distinguishing differences in behavior through the cardiac cycle between healthy and damaged tissue regions. As conventional sonography is often used to guide ablation catheters, ARFI imaging, which requires no additional equipment, may be a convenient modality for monitoring lesion formation in vivo.
Keywords :
acoustic imaging; biomedical imaging; cardiology; catheters; cellular biophysics; radiation therapy; M-mode images; ablation catheters; acoustic radiation force impulse imaging techniques; cardiac cycle; damaged tissue; lesion location; myocardial radiofrequency ablation; myocardial tissue; ovine cardiac tissue; radiofrequency ablation; sonography; Acoustic imaging; Cardiac tissue; In vivo; Lesions; Myocardium; Radiation monitoring; Radio frequency; Shape; Ultrasonography; Visualization; Animals; Catheter Ablation; Echocardiography; Feasibility Studies; Heart Ventricles; Image Interpretation, Computer-Assisted; Pilot Projects; Sheep; Stress, Mechanical; Surgery, Computer-Assisted;
fLanguage :
English
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-3010
Type :
jour
DOI :
10.1109/TUFFC.2005.1428046
Filename :
1428046
Link To Document :
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