27-10-2016 дата публикации
Номер: US20160310105A1
Принадлежит:
In order to obtain a high-resolution ultrasound diagnostic image while reducing the back side reflection of a ultrasound irradiated to the side opposite to the ultrasound transmission direction of an ultrasound transmission/reception device, disclosed is an ultrasound probe, wherein a substrate is provided thereon with a cavity, insulation layers having the cavity therebetween, and an upper layer electrode and a lower layer electrode having the cavity and the insulation layers therebetween, so as to form an ultrasound vibration element, the substrate is held by a backing with a low-modulus member therebetween, and a direct voltage and a alternating voltage are applied between the electrodes to vibrate the ultrasound vibration element, and wherein a mechanical impedance by the substrate and the low-modulus member has a substantially equal value as an acoustic impedance of the backing. 12127. An ultrasound probe comprising an ultrasound vibration element composing a plurality of cells () and a rim () disposed between each of the cells , each of the cells constituted on a substrate by a cavity , by insulation layers with the cavity interposed therebetween , and by an upper layer electrode and a lower layer electrode with the cavity and the insulation layers interposed therebetween , the substrate being supported by a backing with a low-modulus member interposed therebetween , the ultrasound vibration element being vibrated by application of a direct-current voltage and an alternate-current voltage between the electrodes;{'sup': 6', '2, 'wherein the backing has an acoustic impedance falling within ±1 MRayls (10kg/ms) of a mechanical impedance per unit area formed by the substrate and the low-modulus member.'}2. The ultrasound probe according to claim 1 , wherein the rim is formed as a part of the insulation layers.3. The ultrasound probe according to claim 2 , wherein portions of the insulation layers forming the rims protrude toward the substrate and are disposed above ...
Подробнее