Wideband holographic three-dimensional ultrasonic imaging of breast and liver phantoms.
Wideband ultrasonic 3-D holography is a unique technique for volumetric imaging with extremely high lateral and depth resolution. The large frequency bandwidth, which is typically 25% to 100%, provides excellent depth resolution. The synthetic aperture provides optimum lateral resolution of one-half wavelength at the pulse center frequency. Wideband impulse holography is a multi-frequency detection and imaging technique where the reflected target's broadband time waveform signals are recorded over a defined aperture. The signals are then decomposed into their discrete frequency components as single frequency holograms, combined in the spatial frequency domain, and reconstructed into a 3-D composite image. The composite image may then be viewed with stereo glasses in 3-D. Recent 3-D holographic images of human female breast and liver phantoms with internal cysts (5 to 10 mm) at 5 MHz illustrate the efficacy of this technique for medical ultrasound 3-D volumetric imaging. A video of the breast and liver phantoms may be presented at the meeting.
Sheen
D M
DM
Pacific Northwest Laboratories, Richland, WA 99352, USA.
Collins
H D
HD
Gribble
R P
RP
D003199:Computer Systems; D005260:Female; D005348:Fibrocystic Breast Disease / Q000000981:diagnostic imaging; D006696:Holography / Q000295:instrumentation*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D019047:Phantoms, Imaging; D014463:Ultrasonography / Q000295:instrumentation*; D016217:Ultrasonography, Mammary / Q000295:instrumentation*