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1. WO2022005108 - PHASE CONTROL DEVICE FOR IMPROVING ACOUSTIC RADIATION FORCE IMPULSE IMAGE

Publication Number WO/2022/005108
Publication Date 06.01.2022
International Application No. PCT/KR2021/007969
International Filing Date 24.06.2021
IPC
A61B 8/08 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
08Detecting organic movements or changes, e.g. tumours, cysts, swellings
A61B 8/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
Applicants
  • 동국대학교 산학협력단 DONGGUK UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION [KR]/[KR]
Inventors
  • 정종섭 JEONG, Jong Seob
  • 정은영 JEONG, Eun Young
Agents
  • 특허법인 태백 TAEBAEK INTELLECTUAL PROPERTY LAW FIRM
Priority Data
10-2020-008012230.06.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) PHASE CONTROL DEVICE FOR IMPROVING ACOUSTIC RADIATION FORCE IMPULSE IMAGE
(FR) DISPOSITIF DE COMMANDE DE PHASE POUR AMÉLIORER UNE IMAGE D'IMPULSION DE FORCE DE RADIATIONS ACOUSTIQUES
(KO) 음향방사력 임펄스 영상 개선을 위한 위상 제어 장치
Abstract
(EN) The present invention relates to a phase control device for improving an acoustic radiation force impulse image. The phase control device for improving an acoustic radiation force impulse image according to the present invention comprises a piezoelectric element composed of a plurality of splitter elements, and comprises: an ultrasound transducer which receives a return signal after transmitting a ultrasound signal generated by the piezoelectric element to a target; a signal generator which generates an input signal for adjusting a phase of the piezoelectric element and applies the input signal to the respective splitter elements; and a signal processor which analyzes the return signal to compute elasticity of the target. According to the present invention, by adjusting a beam width in the lateral direction and elevation direction of an ultrasound field by means of controlling the phase of the ultrasound signal, the transmission of force by a pushing pulse can be made uniform and errors in estimated displacement values can be attenuated, and thus, the resolution of tissue displacement can be improved.
(FR) La présente invention concerne un dispositif de commande de phase pour améliorer une image d'impulsion de force de radiations acoustiques. Le dispositif de commande de phase pour améliorer une image d'impulsion de force de radiations acoustiques selon la présente invention comprend un élément piézoélectrique composé d'une pluralité d'éléments séparateurs et comprend : un transducteur ultrasonore qui reçoit un signal de retour après la transmission d'un signal ultrasonore produit par l'élément piézoélectrique à une cible ; un générateur de signal qui produit un signal d'entrée pour ajuster une phase de l'élément piézoélectrique et applique le signal d'entrée aux éléments séparateurs respectifs ; et un processeur de signal qui analyse le signal de retour pour calculer l'élasticité de la cible. Selon la présente invention, par réglage de la largeur de faisceau dans la direction latérale et la direction d'élévation d'un champ ultrasonore au moyen de la commande de la phase du signal ultrasonore, la transmission de force par une impulsion de poussée peut être rendue uniforme et les erreurs de valeurs de déplacement estimées peuvent être réduites et, ainsi, la résolution du déplacement de tissu peut être améliorée.
(KO) 본 발명은 음향방사력 임펄스 영상 개선을 위한 위상 제어 장치에 대한 것이다. 본 발명에 따른 음향방사력 임펄스 영상 개선을 위한 위상 제어 장치는 복수의 분할 소자로 이루어진 압전 소자를 포함하고, 상기 압전 소자에 의해 발생한 초음파 신호를 타겟에 송신 후 반사 신호를 수신하는 초음파 변환자와, 상기 압전 소자의 위상을 조절하기 위한 입력 신호를 생성하여 상기 분할 소자 각각에 인가하는 신호 발생기 및 상기 반사 신호를 분석하여 상기 타겟의 탄성을 산출하는 신호 처리기를 포함한다. 본 발명에 따르면, 초음파 신호의 위상을 제어하여 초음파 음장의 측방향 및 고도방향 빔 폭을 조절함으로써 푸싱 펄스에 의한 힘의 전달이 균일하고, 변위 추정값의 오차가 감쇠되어 조직 변위의 해상도가 향상되는 효과가 있다.
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