Results 241 to 250 of about 138,112 (286)

Breast Phantoms for Microwave Imaging

IEEE Antennas and Wireless Propagation Letters, 2014
Herein, we study the dielectric properties of various mixtures susceptible to be used in manufacturing of reference inhomogeneous breast phantoms dedicated to the experimental validation of microwave breast imaging systems in the 0.5-6-GHz frequency range.
Joachimowicz, Nadine, Conessa, Christophe, Henriksson, Tommy, Duchêne, Bernard   +3 more
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Phantom Images

2021
kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 40 Nr.
openaire   +1 more source

Anisotropic phantoms in Magnetic Resonance Imaging

2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015
Even though Magnetic Resonance Imaging (MRI) gives possibility to obtain qualitatively very good images, most quantitative results obtained by means of MRI are biased with high dependence on particular hardware parameters, imaging sequence used, and properties of analysed sample.
Artur, Krzyzak, Krzysztof, Klodowski, Zbigniew, Raszewski   +2 more
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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.
Ramon Q, Erkamp, Stanislav Y, Emelianov, Andrei R, Skovoroda, Matthew, O'Donnell   +3 more
openaire   +2 more sources

Imaging CDMAM phantom with tomosynthesis

SPIE Proceedings, 2008
We 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, Andy Smith, Chris Ruth, Zhenxue Jing   +3 more
openaire   +1 more source

Phantom kidney on perfusion renal imaging

Seminars in Nuclear Medicine, 1984
A 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
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Reference phantoms for microwave imaging

2017 11th European Conference on Antennas and Propagation (EUCAP), 2017
Microwave 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, Duchêne, Bernard, Conessa, Christophe, Meyer, Olivier   +3 more
openaire   +1 more source

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.
G, Schultz, R, Melzack
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Functional magnetic resonance imaging reference phantom

Magnetic Resonance Imaging, 2009
Functional 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