کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4228698 1609862 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pre-clinical testing of a phased array ultrasound system for MRI-guided noninvasive surgery of the brain—A primate study
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی رادیولوژی و تصویربرداری
پیش نمایش صفحه اول مقاله
Pre-clinical testing of a phased array ultrasound system for MRI-guided noninvasive surgery of the brain—A primate study
چکیده انگلیسی

MRI-guided and monitored focused ultrasound thermal surgery of brain through intact skull was tested in three rhesus monkeys. The aim of this study was to determine the amount of skull heating in an animal model with a head shape similar to that of a human. The ultrasound beam was generated by a 512 channel phased array system (Exablate® 3000, InSightec, Haifa, Israel) that was integrated within a 1.5-T MR-scanner. The skin was pre-cooled by degassed temperature controlled water circulating between the array surface and the skin. Skull surface temperature was measured with invasive thermocouple probes. The results showed that by applying surface cooling the skin and skull surface can be protected, and that the brain surface temperature becomes the limiting factor. The MRI thermometry was shown to be useful in detecting the tissue temperature distribution next to the bone, and it should be used to monitor the brain surface temperature. The acoustic intensity values during the 20 s sonications were adequate for thermal ablation in the human brain provided that surface cooling is used.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Radiology - Volume 59, Issue 2, August 2006, Pages 149–156
نویسندگان
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