Design Criteria for Medical Bragg Imaging
We have built a Bragg imaging system using carefully designed cylindrical and spherical lenses essentially free of spherical aberrations. We are particularly interested in applying the system to medical applications and have therefore restricted ourselves to low frequencies of ultrasound (1–5 MHz). The system has been used to obtain transmitted and reflected images. In addition to images, quantitative data on the light intensity in the image as a function of sound intensity have been obtained, Engineering data on the optical mounting and transducer are also discussed.
The experience gained so far leads us ti believe that a well designed system will yield useful medical images.
KeywordsSound Field Sound Intensity Spherical Aberration Cylindrical Lens Ultrasonic Power
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- 1.A. Korpel, “Visualization of the cross section of a sound beam by Bragg diffraction of laser light,” Appl. Phys. Letters 9(12): 425–427 (1966)Google Scholar
- 2.A.’Korpel, “Optical image of ultrasonic fields by acoustic Bragg diffraction,” Ph.D> dissertation, Ùniversity of Delft, Netherlands (1969).Google Scholar
- 4.J. Landry, H. Keyani, G. Wade, “Bragg-diffraction imaging: a potential technique for medical diagnosis and material inspection,” Acoustical Holography,;Vol. ÌV, Glen Wade ( Ed.) New York: Plenum Press (1972).Google Scholar
- 5.H. Keyani, J. Landr,y5 G. Wade, “Bragg-diffraction imaging. ‘a potential technique for medical diagnosis and material inspection, part II,” Acoustical Holography, Vol. V, Phiaip S. Green (Ed.), New York: Plenum Press (1974).Google Scholar
- 7.G. Flesher and G. Wade, Personal communication, University of California, Santa Barbara, November, 1975.Google Scholar
- 8.American Standard Procedures for Calibration of Electra-acoustic Transducers, American Standards Association Inc., New York (1958).Google Scholar