Results 151 to 160 of about 138,343 (192)
Some of the next articles are maybe not open access.
Nonlinear elasticity imaging: Theory and phantom study
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2004In 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.
Ramon Q, Erkamp +3 more
openaire +2 more sources
Imaging CDMAM phantom with tomosynthesis
SPIE Proceedings, 2008We studied the use of the mammography contrast detail phantom (CDMAM) with tomosynthesis to evaluate the performance of our system as well as to explore the application of CDMAM in 3D breast imaging. The system was Hologic's 1st generation tomosynthesis machine.
Baorui Ren +3 more
openaire +1 more source
Phantom kidney on perfusion renal imaging
Seminars in Nuclear Medicine, 1984A 67-year-old male presented with sudden onset of right flank pain and anuria. On examination he had signs of acute renal failure. An intravenous urogram showed a large right kidney with poor filling of the lower pole calyceal system suspicious for having a renal mass. The left kidney was not visualized. Renal ultrasonogram showed that the right kidney
openaire +2 more sources
Reference phantoms for microwave imaging
2017 11th European Conference on Antennas and Propagation (EUCAP), 2017Microwave imaging offers an alternative modality for breast cancer screening and for the diagnosis of cerebrovascular accidents. Before clinical application, the performances of microwave imaging systems have to be assessed on anatomically detailed anthropomorphic phantoms.
Joachimowicz, Nadine +3 more
openaire +1 more source
The Charles Bonnet Syndrome: ‘Phantom Visual Images’
Perception, 1991The 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.
G, Schultz, R, Melzack
openaire +2 more sources
Functional magnetic resonance imaging reference phantom
Magnetic Resonance Imaging, 2009Functional magnetic resonance imaging (fMRI) is widely used to pinpoint active brain areas. Changes in neuronal activity modulate the local blood oxygenation level, and the associated modulation of the magnetic field homogeneity can be detected with magnetic resonance imaging.
openaire +2 more sources
Multiparameter solid phantom for fluorescence imaging standardization
Clinical and Preclinical Optical Diagnostics, 2017Despite recent advances in fluorescence imaging, standardization of systems remains an unmet need. We developed a new comprehensive phantom that resolves multiple system parameters simultaneously and could be used for system performance comparison.
Anastasopoulou, M. +6 more
openaire +2 more sources
Imaging Phantoms: Conventional X-ray Imaging Applications
2013An imaging phantom is a specially designed physical object that is scanned or imaged in medical imaging to evaluate, analyze, and optimize the performance of various imaging modalities. These phantoms are readily available and provide more consistent results than the use of a living subject or cadaver; their use also serves to avoid subjecting a human ...
Kwan-Hoong Ng, Chai-Hong Yeong
openaire +1 more source
Computerized evaluation of mammographic image quality using phantom images
Computerized Medical Imaging and Graphics, 1998A simple, quick and computerized method for quantitatively evaluating the image quality of mammography phantom images has been developed. Images of the American College of Radiology (ACR) mammographic accreditation phantoms were acquired under different X-ray techniques, scored and ranked subjectively by five expert readers, and digitized for ...
openaire +2 more sources
A real vessel phantom for imaging experimentation
Medical Physics, 1997Vascular phantoms are used to evaluate imaging techniques such as ultrasound (US), CT, and angiography. They are expected to mimic the vasculature, surrounding tissue, and blood, and therefore must meet specific requirements on the mimicking materials, with respect to x‐ray attenuation and acoustic properties (velocity, attenuation).
W, Dabrowski +4 more
openaire +2 more sources