Reduction of dielectric artifacts within an InSightec ExAblate 4000 head transducer
نویسندگان
چکیده
منابع مشابه
Reduction of dielectric artifacts within an InSightec ExAblate 4000 head transducer
Background/introduction High intensity focused ultrasound (HIFU) ablation of the brain has been increasingly used as a non-invasive treatment for essential tremor and neuropathic pain. However, artifacts arise in magnetic resonance (MR) images as a result of dielectric properties of the water bath coupler and of the tissues being investigated. As radio frequency (RF) waves enter a dielectric me...
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Background/introduction MR imaging-guided high intensity focused ultrasound (MRIgFUS) is a novel, noninvasive technique for the treatment of functional brain disorders through the intact human skull at millimeter precision. The ExAblate 4000 transcranial MRIgFUS system (InSightec, Haifa, Israel) uses a 1024-element phased array transducer, which is attached to the patient’s head via a standard ...
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چکیده ندارد.
15 صفحه اولTransducer models of head-centred motion perception
By adding retinal and pursuit eye-movement velocity one can determine the motion of an object with respect to the head. It would seem likely that the visual system carries out a similar computation by summing extra-retinal, eye-velocity signals with retinal motion signals. Perceived head-centred motion may therefore be determined by differences in the way these signals encode speed. For example...
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ژورنال
عنوان ژورنال: Journal of Therapeutic Ultrasound
سال: 2015
ISSN: 2050-5736
DOI: 10.1186/2050-5736-3-s1-p27