Results 21 to 30 of about 66,094 (288)

A review of carotid artery phantoms for doppler ultrasound applications

Journal of Medical Ultrasound, 2021
Ultrasound imaging systems need tissue-mimicking phantoms with a good range of acoustic properties. Many studies on carotid artery phantoms have been carried out using ultrasound; hence this study presents a review of the different forms of carotid ...
Kyermang Kyense Dakok, Mohammed Zubir Matjafri, Nursakinah Suardi, Ammar Anwar Oglat, Seth Ezra Nabasu   +4 more
doaj   +1 more source

Influence of wall thickness and diameter on arterial shear wave elastography: a phantom and finite element study [PDF]

, 2017
Quantitative, non-invasive and local measurements of arterial mechanical properties could be highly beneficial for early diagnosis of cardiovascular disease and follow up of treatment.
Bini, Fabiano, Blasi, Giulia, Fiorentini, Stefano, Larsson, Matilda, Maksuti, Elira, Marinozzi, Franco, Urban, Matthew W.   +6 more
core   +1 more source

3D printed patient-specific thorax phantom with realistic heterogenous bone radiopacity using filament printer technology

Zeitschrift für Medizinische Physik, 2022
Current medical imaging phantoms are usually limited by simplified geometry and radiographic skeletal homogeneity, which confines their usage for image quality assessment. In order to fabricate realistic imaging phantoms, replication of the entire tissue
Sepideh Hatamikia, Gernot Kronreif, Alexander Unger, Gunpreet Oberoi, Laszlo Jaksa, Ewald Unger, Stefan Koschitz, Ingo Gulyas, Nikolaus Irnstorfer, Martin Buschmann, Joachim Kettenbach, Wolfgang Birkfellner, Andrea Lorenz   +12 more
doaj   +1 more source

Organosilicon phantom for photoacoustic imaging

Journal of Biomedical Optics, 2015
Photoacoustic imaging is an emerging technique. Although commercially available photoacoustic imaging systems currently exist, the technology is still in its infancy. Therefore, the design of stable phantoms is essential to achieve semiquantitative evaluation of the performance of a photoacoustic system and can help optimize the properties of contrast ...
Roberto Pini, Sandro Meucci, Sandro Meucci, Claudia Kusmic, Cecilia Masciullo, Paolo Armanetti, Nicole Di Lascio, Lucia Cavigli, Francesco Faita, Marco Cecchini, Luca Menichetti, Fulvio Ratto, Cinzia Avigo   +12 more
openaire   +5 more sources

Development and application of stable phantoms for the evaluation of photoacoustic imaging instruments. [PDF]

PLoS ONE, 2013
Photoacoustic imaging combines the high contrast of optical imaging with the spatial resolution and penetration depth of ultrasound. This technique holds tremendous potential for imaging in small animals and importantly, is clinically translatable.
Sarah E Bohndiek, Sandhya Bodapati, Dominique Van De Sompel, Sri-Rajasekhar Kothapalli, Sanjiv S Gambhir   +4 more
doaj   +1 more source

Developing a Phantom for the Positronium Imaging Evaluation

Acta Physica Polonica B Proceedings Supplement, 2022
In this contribution, a concept for a new phantom for positronium imaging with PET scanners is described. The proposed phantom is based on the NEMA IEC phantom in which six high-activity spheres are filled with solutions characterized by a different mean ortho-positronium lifetime.
Łapkiewicz, G., Niedźwiecki, Sz., Moskal, P.   +2 more
openaire   +2 more sources

A brief review for common doppler ultrasound flow phantoms

Journal of Medical Ultrasound, 2020
In this review, the flow phantoms and the wall-less flow phantoms with recognized acoustic features (attenuation and speed of sound), interior properties, and dimensions of tissue were prepared, calibrated, and characterized by Doppler ultrasound (US ...
Sabri M Shalbi, Ammar A Oglat, Balid Albarbar, Fuzi Elkut, M A Qaeed, Ali Abu Arra   +5 more
doaj   +1 more source

Materials for phantoms for terahertz pulsed imaging [PDF]

Physics in Medicine and Biology, 2004
Phantoms are commonly used in medical imaging for quality assurance, calibration, research and teaching. They may include test patterns or simulations of organs, but in either case a tissue substitute medium is an important component of the phantom. The aim of this work was to identify materials suitable for use as tissue substitutes for the relatively
Walker, G.C., Berry, E., Smye, S.E., Brettle, D.S.   +3 more
openaire   +3 more sources

Monte Carlo Simulation for Polychromatic X-ray Fluorescence Computed Tomography with Sheet-Beam Geometry [PDF]

, 2017
X-ray fluorescence computed tomography based on sheet-beam can save a huge amount of time to obtain a whole set of projections using synchrotron. However, it is clearly unpractical for most biomedical research laboratories. In this paper, polychromatic X-
Chen, Mianyi, Deng, Luzhen, He, Peng, Jiang, Shanghai, Wei, Biao   +4 more
core   +3 more sources

Quantitative magnetic resonance imaging phantoms: A review and the need for a system phantom [PDF]

Magnetic Resonance in Medicine, 2017
The MRI community is using quantitative mapping techniques to complement qualitative imaging. For quantitative imaging to reach its full potential, it is necessary to analyze measurements across systems and longitudinally. Clinical use of quantitative imaging can be facilitated through adoption and use of a standard system phantom, a calibration ...
Kathryn E. Keenan, Maureen Ainslie, Alex J. Barker, Michael A. Boss, Kim M. Cecil, Cecil Charles, Thomas L. Chenevert, Larry Clarke, Jeffrey L. Evelhoch, Paul Finn, Daniel Gembris, Jeffrey L. Gunter, Derek L.G. Hill, Clifford R. Jack, Edward F. Jackson, Guoying Liu, Stephen E. Russek, Samir D. Sharma, Michael Steckner, Karl F. Stupic, Joshua D. Trzasko, Chun Yuan, Jie Zheng   +22 more
openaire   +3 more sources