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Machine translation
1. (WO1980000193) HIGH RESOLUTION ROTATING HEAD ULTRASONIC SCANNER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000193    International Application No.:    PCT/US1979/000487
Publication Date: 07.02.1980 International Filing Date: 05.07.1979
IPC:
A61B 8/08 (2006.01), G01N 29/265 (2006.01), G01S 7/52 (2006.01), G10K 11/35 (2006.01)
Applicants:
Inventors:
Priority Data:
922185 05.07.1978 US
Title (EN) HIGH RESOLUTION ROTATING HEAD ULTRASONIC SCANNER
(FR) SCANNER ULTRASONIQUE A TETE ROTATIVE DE HAUTE RESOLUTION
Abstract: front page image
(EN)An improved high resolution rotating head ultrasonic scanner is provided for use in an ultrasonic scanning subsystem of an ultrasonic breast scanning system. The scanning subsystem of the breast scanning system includes a pair of high resolution ultrasonic rotating scanning heads (40, 42) mounted on a transport mechanism (14). A scan is conducted by moving the transport mechanism while the scanning heads rotate so that a series of parallel uniformly spaced cross-sectional scans of the tissue of the breast are conducted from the inferior to the superior border of the breast. Each scanning head has three ultrasonic transducers (20a, b, c,) uniformly spaced around its perimeter. The focal ranges of the transducers of a given scanning head are chosen so that sector scan conducted by each head is divided into slightly overlapping zones with the depth of each zone corresponding to the focal range of one of the transducers on each scanning head. The angular velocity and phase of the scanning heads are controlled so that during one revolution of the scanning heads, each transducer of each head conducts a sector scan primarily through its zone. However only one such transducer will conduct such a scan at any one time.
(FR)Un scanner ultrasonique ameliore a tete rotative de haute resolution est utilise dans un sous-systeme d"exploration ultrasonique d"un systeme d"exploration ultrasonique du sein. Le sous-systeme du systeme d"exploration du sein comprend une paire de tetes exploratrices rotatives ultrasoniques de haute resolution (40, 42) sur un mecanisme de transport (48). Une exploration est conduite en deplacant le mecanisme de transport pendant que les tetes exploratrices tournent de maniere a effectuer une serie d"explorations en coupe espacees uniformement et paralleles des tissus du sein, a partir du bord inferieur jusqu"au bord superieur du sein. Chaque tete exploratrice possede trois transducteurs ultrasoniques (20a, b, c) espaces uniformement autour de son perimetre. Les distances focales des transducteurs d"une tete exploratrice donnee sont choisies de sorte que l"exploration d"un secteur conduite par chaque tete soit divisee en zones se chevauchant legerement, avec la profondeur de chaque zone correspondant a la distance focale d"un des transducteurs sur chaque tete d"exploration. La vitesse angulaire et la phase des tetes exploratrices sont commandees de sorte que pendant une rotation des tetes exploratrices, chaque transducteur de chaque tete effectue une exploration de secteur essentiellement a travers sa zone. Cependant, un seul transducteur effectuera une telle exploration a la fois.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)