Transurethral ultrasound prostate detection method, diagnostic apparatus and transducer
A technology of ultrasonic transducer and ultrasonic diagnostic instrument, which is applied in the directions of ultrasonic/sonic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc. It can solve the problems affecting the accuracy of clinical detection and low resolution, shorten the detection distance, improve Resolution, clinical detection and accurate effect
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Embodiment 1
[0073] Example 1: Intraprostatic Ultrasound Transducer Using Single Beam Technology
[0074] combine figure 1 , this embodiment describes in detail the intra-prostatic ultrasound transducer using single-beam technology, which includes an ultrasound transducer unit composed of a backing layer 111 , a piezoelectric layer 112 and an acoustic matching layer 113 that are closely connected in sequence. Correspondingly, the ultrasonic catheter driving its movement drives its 360-degree rotation.
[0075] In different embodiments, the intra-prostate ultrasonic transducer can also be a cylindrical array ultrasonic transducer, which includes a plurality of ultrasonic transducer units distributed along the cylindrical surface 360 degrees, such as figure 2 shown. Correspondingly, the moving ultrasonic catheter only needs to be driven to move back and forth, and does not need to be rotated.
[0076] The intra-prostate ultrasonic transducer of this embodiment can enter the prostate t...
Embodiment 2
[0078] Example 2: Ultrasound Focusing Transducer in the Prostate Using Whole Acoustic Structure Focusing Technology
[0079] Such as Figure 4 Shown is a schematic diagram of the intra-prostatic ultrasound focusing transducer of this embodiment, which includes a backing layer 111, a piezoelectric layer 112 and an acoustic matching layer 113 that are closely connected in sequence, wherein: the backing layer 111, the piezoelectric layer 112 and The acoustic matching layers 113 all have mechanical curved surfaces, and the radii of curvature of the three can be calculated and set according to the requirements of the focused sound field. The focus factor K is defined as the ratio of the focal length f to the transducer aperture d, ie: K=f / d. Given the focus factor K and the focal length f, the size of the aperture d can be calculated.
Embodiment 3
[0080] Example 3: Ultrasound Focusing Transducer Using Acoustic Lens Focusing Technology in Prostate
[0081] Such as Figure 5 Shown is a schematic diagram of the intra-prostatic ultrasound focusing transducer of this embodiment, which includes a backing layer 111, a piezoelectric layer 112, an acoustic matching layer 113, and an acoustic lens 114 closely connected in sequence, wherein the acoustic lens 114 has a mechanically curved surface , its radius of curvature can be calculated and set according to the requirements of the focused sound field.
[0082] The acoustic lens 114 can be a plano-convex lens or a plano-concave lens, which is determined according to the sound velocity of the lens material. For lens materials whose sound velocity is lower than that of the medium, it is a plano-convex lens, such as Figure 6 Shown by the dotted line in the middle; for the lens material whose sound velocity is higher than the sound velocity of the medium, it is a plano-concave len...
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