Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Lawrence S. Taylor"'
Autor:
Deborah J. Rubens, D. Pasternack, B.C. Porter, Raymond B. Baggs, Priya Nigwekar, Lawrence S. Taylor, Edward M. Messing, Gyongyi Nadasdy, Zhe Wu, P. Anthony di Sant'Agnese, Kevin J. Parker
Publikováno v:
Radiology. 237:981-985
To prospectively evaluate the accuracy of three-dimensional (3D) sonoelastographic imaging, relative to that of gray-scale ultrasonography (US), in the in vitro detection of prostate cancer.The study was approved by the institutional review board and
Publikováno v:
Physics in Medicine and Biology. 49:911-922
The shear wave velocity is one of a few important parameters that characterize the mechanical properties of bio-materials. In this paper, two noninvasive methods are proposed to measure the shear velocity by inspecting the shear wave interference pat
Publikováno v:
Physics in Medicine and Biology. 45:1477-1494
Sonoelastography is an ultrasound imaging technique where low amplitude, low-frequency shear waves (less than 0.1 mm displacement and less than 1 kHz frequency) are propagated through internal organs, while real-time Doppler techniques are used to im
Publikováno v:
The Journal of the Acoustical Society of America. 117(5)
A number of different approaches have been developed to estimate and image the elastic properties of tissue. The biomechanical properties of tissues are vitally linked to function and pathology, but cannot be directly assessed by conventional ultraso
Autor:
Raymond B. Baggs, D. Pasternack, Gyongyi Nadasdy, Deborah J. Rubens, Lawrence S. Taylor, Zhe Wu, Kevin J. Parker, P. Anthony di Sant'Agnese, B.C. Porter
Publikováno v:
Ultrasound in medicinebiology. 30(2)
A whole mount histology protocol for 3-D tissue reconstruction to compare the size and spatial location of tumors (and other components) identified in histology data with that from 3-D ultrasound (US) images is presented. Prostate specimens are image
Publikováno v:
Advances in Bioengineering.
The frequency dependent viscoelastic properties of bovine liver are investigated in support of the development of an ultrasonic vibration imaging system for the detection of hard lesions in soft tissue. This system, which we call sonoelastography, is
Autor:
Gyongyi Nadasdy, Kevin J. Parker, Raymond B. Baggs, Lawrence S. Taylor, B.C. Porter, D. Pasternack, Deborah J. Rubens, A. di Sant'Agnese
Publikováno v:
2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263).
We present a method for combining histological data with 3D ultrasound of excised prostate tissue using surface registration. With this technique, 3D prostate cancer lesions can be properly located and visualized within a B-scan volume for tissue cha
Publikováno v:
2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263).
The sonoelastographic theory of tumor detection predicts enhanced image contrast as vibration frequency increases. However, the opposite effect is observed when imaging liver lesions at frequencies (200-400 Hz) where strong viscoelastic effects domin
Publikováno v:
2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121).
A technique for reducing vibration artifacts encountered when using pure tone vibration in vibration amplitude sonoelastography is presented. Multi-tone signals were designed to synchronize with the pulse repetition frequency and packet size of the s
Publikováno v:
SPIE Proceedings.
Sonoelastography is a vibration Doppler technique for imaging the relative elasticity of tissues. Detectability of hard lesions of various sizes has previously been demonstrated in tissue phantoms by our group. Because real tissue differs from phanto