Results 311 to 320 of about 6,084,382 (354)

Nonlinear elasticity imaging: Theory and phantom study

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2004
In tissue the Young's modulus cannot be assumed constant over a wide deformation range. For example, direct mechanical measurements on human prostate show up to a threefold increase in Young's modulus over a 10% deformation. In conventional elasticity imaging, these effects produce strain-dependent elastic contrast.
Skovoroda, O'Donnell, Emelianov, Erkamp
openaire   +4 more sources

A multimodality vascular imaging phantom with fiducial markers visible in DSA, CTA, MRA, and ultrasound.

Medical Physics (Lancaster), 2004
The objective was to design a vascular phantom compatible with digital subtraction angiography, computerized tomography angiography, ultrasound and magnetic resonance angiography (MRA).
G. Cloutier, G. Soulez, S. Qanadli, Pierre Teppaz, L. Allard, Z. Qin, François Cloutier, L. Durand   +7 more
semanticscholar   +1 more source

Effects of nonionic intravenous contrast agents at PET/CT imaging: phantom and canine studies.

Radiology, 2003
PURPOSE To investigate the effects of intravenous contrast agents on quantitative values obtained with a combined positron emission tomographic (PET) and computed tomographic (CT) scanner by using several phantoms and a dog.
Y. Nakamoto, B. Chin, D. Kraitchman, L. Lawler, Laura T. Marshall, R. Wahl   +5 more
semanticscholar   +1 more source

Computerized scheme for evaluating mammographic phantom images

Medical Physics, 2012
The authors developed a computer algorithm to automatically evaluate images of the American College of Radiology (ACR) mammography accreditation phantom.The developed algorithm consist of the edge detection of wax insert, nonuniformity correction of background, and correction for magnification and also calculate the cross-correlation coefficient by ...
Yoshie Kodera, Masaki Asahara
openaire   +3 more sources

A microfabricated phantom for diffusion tensor imaging

SPIE Proceedings, 2010
A microfabricated phantom with application in diffusion tensor imaging (DTI) is presented. Using lithography technique, we have the capability of creating microchannels in the same scale as actual neural fibers (few to tens of microns in diameter). The method is flexible in generating different geometrical patterns.
Guang Liang Ding, Behzad Ebrahimi, Quan Jiang, Quan Jiang, Timothy Chupp, Siamak P. Nejad Davarani, Siamak P. Nejad Davarani   +6 more
openaire   +2 more sources

An anthropomorphic torso section phantom for ultrasonic imaging

Medical Physics, 1980
Using stable materials capable of mimicking any soft tissues of the human body—quantitatively with respect to speed of sound, density, and attenuation coefficient and semiquantitatively with respect to scatter—we have constructed a torso section phantom containing simulated bowel gas, kidney, kidney fat pad, liver, tumor, cyst, bony structures, and ...
James A. Zagzebski, Thomaz Ghilardi-Netto, Ernest L. Madsen   +2 more
openaire   +3 more sources

The Charles Bonnet Syndrome: ‘Phantom Visual Images’

Perception, 1991
The Charles Bonnet syndrome is a condition in which individuals experience complex visual hallucinations without demonstrable psychopathology or disturbance of normal consciousness. An analysis of the sixty-four cases described in the literature reveals that the syndrome can occur at any age though it is more common in elderly people.
Ronald Melzack, Geoffrey Schultz
openaire   +3 more sources

Noninvasive carotid artery elastography using multielement synthetic aperture imaging: Phantom and in vivo evaluation

Medical Physics (Lancaster), 2017
Rohit Nayak, G. Schifitto, M. Doyley
semanticscholar   +1 more source

Body Image, Prostheses, Phantom Limbs

Body & Society, 2014
The body image with respect to physical disability has long been a woefully under-theorized area of scholarship. The literature that does attend to the body image in cases of physical abnormality or functional impairment regularly offer poorly articulated or problematic definitions of the concept, effectively undermining its historic analytic scope and
openaire   +2 more sources

Molecular imaging in oncology: Current impact and future directions

Ca-A Cancer Journal for Clinicians, 2022
Martin G Pomper, Steven P Rowe
exaly