Results 21 to 30 of about 41,405 (209)

Agarose Gel Characterization for the Fabrication of Brain Tissue Phantoms for Infrared Multispectral Vision Systems

Gels, 2023
Synthetic phantoms that recreate the characteristics of biological tissues are valuable tools for systematically studying and comprehending physiologies, pathologies, and biological processes related to tissues. The reproduction of mechanical and optical
Efraín Albor-Ramírez, Miguel Reyes-Alberto, Luis M. Vidal-Flores, Enoch Gutierrez-Herrera, Miguel A. Padilla-Castañeda   +4 more
doaj   +1 more source

Phantoms for performance assessment of optical coherence tomography systems [PDF]

, 2012
In this paper, we describe the procedures to make epoxy resin and agarose phantoms designed using Mie scattering calculations. The phantoms are constructed to be used in the estimation of point spread function (PSF) of an optical coherence tomography ...
S. A. Hojjatoleslami, Corr, S.A., Podoleanu, A.G., Price, M.C., Podoleanu, Adrian Gh., Avanaki, M.R.N., Avanaki, Mohammad R.N., Mazrae Khoshki, R., Mark C. Price, Rohollah Mazraeh Khoshki, Price, Mark C., Adrian G. Podoleanu, Mohammad R. N. Avanaki, Corr, Serena A., Khoshki, Rohollah Mazraeh, Serena A. Corr, Hojjatoleslami, S.A.   +16 more
core   +1 more source

Time-gated transillumination and reflection by biological tissues and tissuelike phantoms: simulation versus experiment [PDF]

, 1997
A numerical method is presented to solve exactly the time-dependent diffusion equation that describes light transport in turbid media. The simulation takes into account spatial variations of the scattering and absorption factors of the medium and the ...
García, N., Michielsen, K., Raedt, H. De, Michielsen, K.,, García, N.,, Raedt, H. De,   +5 more
core   +1 more source

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

Translating Imaging Into 3D Printed Cardiovascular Phantoms: A Systematic Review of Applications, Technologies, and Validation. [PDF]

, 2022
Translation of imaging into 3-dimensional (3D) printed patient-specific phantoms (3DPSPs) can help visualize complex cardiovascular anatomy and enable tailoring of therapy.
Nguyen, Christopher, Illi, Joël, Windecker, Stephan, Praz, Fabien, Gloeckler, Martin, Bernhard, Benedikt, Pilgrim, Thomas, Haeberlin, Andreas, Gräni, Christoph   +8 more
core   +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

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

3D printing of radioactive phantoms for nuclear medicine imaging. [PDF]

, 2020
BACKGROUND For multicenter clinical studies, PET/CT and SPECT/CT scanners need to be validated to ensure comparability between various scanner types and brands. This validation is usually performed using hollow phantoms filled with radioactive liquids.
Läppchen, Tilman, Krause, Thomas, Meier, Lorenz P., Rominger, Axel, Prenosil, George, Hentschel, Michael, Klaeser, Bernd, Fürstner, Markus   +7 more
core   +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