Surgery – Truss – Pad
Patent
1992-01-02
1995-01-24
Jaworski, Francis
Surgery
Truss
Pad
36441325, 73625, A61B 800, G01N 2900
Patent
active
053834577
ABSTRACT:
A method and apparatus for reducing noise and enhancing the dynamic range of an image data set gather from an array (12) of transducers (T). The method includes the step of processing the image data set in a digital computer (17) by a noise reduction technique, such as deconvolving the noise component by means of a CLEAN or other algorithm. Thereafter the artifact image data introduced by the noise reduction technique is reduced by masking the processed image data set with the original image data set. This masking is done by multiplying each data value in the processed image data set by the corresponding data value in the original image data set. The method further includes scaling and normalizing the masked data and finally displaying the same on an image display device (42). Additionally, for imaging apparatus (10) not having a cross-correlator (16), phase aberration is reduced by performing a coordinate transformation step prior to noise reduction using a non-standard set of coordinate transformation algorithms.
REFERENCES:
patent: 4397006 (1983-08-01), Galbraith
patent: 4442715 (1984-04-01), Brisken et al.
patent: 4470305 (1984-09-01), O'Donnell
patent: 4478085 (1984-10-01), Sasaki
patent: 4509525 (1985-04-01), Seo
patent: 4553437 (1985-11-01), Luthra et al.
patent: 4586135 (1986-04-01), Matsumoto
patent: 4604697 (1986-08-01), Luthra et al.
patent: 4664122 (1987-05-01), Yano
patent: 4677981 (1987-07-01), Coursant
patent: 4716414 (1987-12-01), Luttrell et al.
patent: 4817614 (1989-04-01), Hasler et al.
patent: 4835689 (1989-05-01), O'Donnell
patent: 5111823 (1992-05-01), Cohen
patent: 5188113 (1993-02-01), Sato et al.
R. Thompson, et al. Interferometry and Synthesis in Radioastronomy, J. Wiley, 1986.
O'Donnell, et al. "Phase Aberration Measurements in Medical Ultrasound: Human Studies", Ultrasonic Imaging, vol. 10, pp. 1-11 (1988).
O'Donnell, et al. "Aberration Correction without the Need for a Beacon Signal", IEEE Ultrasonics Symposium, pp. 833-837 (1988).
O'Donnell, et al. "Phase-Aberration Correction Using Signals from Point Reflectors and Diffuse Scatterers: Measurement", IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 35, No. 6, pp. 768-774 (1988).
Hayakawa "Multifrequency Echoscopy for Quantitative Acoustical Characterization of Living Tissues", J. Acoustical Society of America, vol. 69 (6) pp. 1838-1840 (1981).
Somer, et al. "Real-Time Improvement of both Lateral and Range Resolution by Optical Signal Processing", Ultrasonics Symposium Proceedings, pp. 1002-1005 (1977).
Cohen, "Phase Recovery and Calibration with Underwater Acoustic Arrays", J. Acoustical Society of America, Sup. 1, vol. 82, pp. 574-575 (1987).
Jaworski Francis
National Fertility Institute
LandOfFree
Method and apparatus for processing images does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for processing images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for processing images will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1462421