Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1998 · 106 citations · 4 references
Biomedical AcousticsMedical UltrasoundEngineeringEducationBiomedical EngineeringMedical InstrumentationMedical AcousticsPower UltrasoundMedical Ultrasonic ArraysComputational ElectromagneticsInstrumentationTransducer DesignUltrasound PhysicsRadiologyMedical ImagingUltrasonicsPhased ArrayUltrasoundReal-time ScanningTransducer PrincipleMedical DevicesMicromachined Ultrasonic Transducer
Ultrasonic transducer array design for medical imaging relies on key performance parameters such as sensitivity, coupling, bandwidth, frequency downshift, pulse duration, beam focusing, and electrical matching, while accounting for 2D and 3D effects and enabling multi‑element arrays for real‑time 2D scanning and full 3D volume imaging. Computer‑based 3D finite‑element modeling demonstrates clear advantages for optimizing transducer array design.
The basics of ultrasonic transducer array design in the frequency range useful for medical imaging are discussed. Performance parameters of importance in transducer design are considered, including sensitivity, coupling constant, band width, frequency downshift, pulse duration, beam focusing properties, and electrical matching. 2D and 3D effects must also be taken into account. The advantages of computer modeling in 3D with finite element analysis code are highlighted. The principles of multi-element array transducers useful for 2D real-time scanning are reviewed. 2D arrays provide the opportunity of focusing the elevation beam dimension in the short axis, or make possible full 3D scanning volumes.
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The Design of Broadband and Efficient Acoustic Wave Transducers
C.-H. Chou, John Bowers, A.R. Selfridge et al. · 1980 · 10 citations