graphy
发表于 2025-3-25 05:39:25
http://reply.papertrans.cn/19/1811/181093/181093_21.png
flammable
发表于 2025-3-25 10:19:23
Basic Features of Ultrasound Propagation,This chapter deals with the basic ideas and aspects of ultrasound as it travels through a medium. The main questions addressed are the following: what are sound and ultrasound, what does the medium through which the ultrasound is passing do to the ultrasound, and finally, what does the ultrasound do to the medium?
胰岛素
发表于 2025-3-25 12:52:50
Generating and Detecting Ultrasound,In this chapter the basic means of creating and detecting ultrasound are discussed, together with the structure and operation of diagnostic transducers, the ultrasound beam produced by these transducers and the main ways of checking their performance.
哭得清醒了
发表于 2025-3-25 16:04:12
Motion (M-) Mode Scanning Instruments,One of the drawbacks of A-mode scanning is the fact that it yields only crude qualitative appreciation of the motion of structures. In order to overcome this difficulty, in particular for applications dealing with rhythmically-moving structures such as the heart and its valves, . (.-), also called . (.), ., has been developed.
gait-cycle
发表于 2025-3-25 20:50:14
Static B-Mode Instruments,It was pointed out previously that one of the major drawbacks of the A-mode scanning technique is the fact that it acquires information about only a single line through the tissue at any particular position of the probe. The most common method for overcoming this one-dimensionality is the B-mode technique.
fodlder
发表于 2025-3-26 01:37:32
http://reply.papertrans.cn/19/1811/181093/181093_26.png
addict
发表于 2025-3-26 05:19:58
http://reply.papertrans.cn/19/1811/181093/181093_27.png
权宜之计
发表于 2025-3-26 11:26:06
https://doi.org/10.1007/978-3-031-02589-1e more advanced types of instruments and therefore warrants some special attention. An understanding of the A-mode instrument is in many respects a prerequisite for understanding the more developed machines.
进入
发表于 2025-3-26 15:53:03
Yumin Wu,Kun Yang,Hsiao-Hwa Chen order to overcome this drawback, techniques for taking rapid B-mode images or, as they are more commonly described, real-time B-mode scanning techniques have been developed. These techniques fall into two broad categories, . and
评论性
发表于 2025-3-26 17:23:53
http://reply.papertrans.cn/19/1811/181093/181093_30.png