(A) study on a diagnostic ultrasound imaging technique employing the modified bandwidth focusing method = 수정된 대역폭 초음파 집속을 이용한 초음파 영상방법에 관한 연구

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The ultrasound focusing used in a conventional diagnostic B-scanner is achieved through the coherent addition of the appropriately delayed pulse echo signals backscattered from an imaging volume of interest. This thesis presents a new method of focusing called modified bandwidth focusing where digital time domain operations supersede the analog delay lines and the sampling rate requirement on analog-to-digital converter is greatly relaxed as compared with that required for the synthetic focusing. The modified bandwidth focusing method reduces speckle noise fluctuations at the cost of lateral resolution, providing a smoother B-mode image. Computer simulations and water tank experiments using the ultrasonic experimental setup are carried out to demonstrate the validity of the proposed modified bandwidth focusing method.
Advisors
Cho, Gyu-Hyeongresearcher조규형researcher
Description
한국과학기술원 : 전기 및 전자공학과,
Publisher
한국과학기술원
Issue Date
1986
Identifier
65186/325007 / 000841016
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과, 1986.2, [ [ii], 87 p. ]

URI
http://hdl.handle.net/10203/39768
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=65186&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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