Results 11 to 20 of about 57,882 (315)

Absolute Quantification in Diagnostic SPECT/CT: The Phantom Premise

Diagnostics, 2021
The application of absolute quantification in SPECT/CT has seen increased interest in the context of radionuclide therapies where patient-specific dosimetry is a requirement within the European Union (EU) legislation.
Stijn De Schepper, Gopinath Gnanasegaran, John C. Dickson, Tim Van den Wyngaert   +3 more
doaj   +1 more source

Repeatability and Reproducibility Uncertainty in Magnetic Resonance-Based Electric Properties Tomography of a Homogeneous Phantom

Tomography, 2023
Uncertainty assessment is a fundamental step in quantitative magnetic resonance imaging because it makes comparable, in a strict metrological sense, the results of different scans, for example during a longitudinal study.
Alessandro Arduino, Francesca Pennecchi, Ulrich Katscher, Maurice Cox, Luca Zilberti   +4 more
doaj   +1 more source

Study for pediatric protocol optimization in chest CT scans

Brazilian Journal of Radiation Sciences, 2019
Radiological exams are increasingly used in clinic for diagnostic analysis of different types of pathologies. These tests are associated with a dose that is received by the patient.
Marcel Javier FREDERICO, Yolma Banguero, Hugo Cerecetto, Priscila Santana, Fernando Oliveira, Arnaldo Prata Mourao   +5 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

Microwave Radar-Based Breast Cancer Detection:Imaging in Inhomogeneous Breast Phantoms [PDF]

, 2009
This letter presents, for the first time, experimental work on microwave breast cancer imaging using inhomogeneous breast phantoms. A recently designed 31-antenna array is used in imaging experiments. The imaging system operates in the full ultrawideband
A. Preece, Klemm, M, Gibbins, DR, Preece, AW, M. Klemm, I. J. Craddock, Benjamin, R, J. A. Leendertz, D. Gibbins, R. Benjamin, Leendertz, JA, Craddock, IJ   +11 more
core   +1 more source

Details preserved unsupervised depth estimation by fusing traditional stereo knowledge from laparoscopic images

Healthcare Technology Letters, 2019
Depth estimation plays an important role in vision-based laparoscope surgical navigation systems. Most learning-based depth estimation methods require ground truth depth or disparity images for training; however, these data are difficult to obtain in ...
Huoling Luo, Qingmao Hu, Fucang Jia
doaj   +1 more source

Numerical and experimental evaluation of phantoms for off-body wireless communications [PDF]

, 2011
The effects of a numerical and a physical phantom on different antenna configurations are evaluated. Input response, radiation patterns and efficiency are considered in the presence of the phantoms.
Paul, DL, G.S Hilton, D.L. Paul, McGeehan, JP, Giddens, H, H. Giddens, Hilton, GS, J.P. McGeehan   +7 more
core   +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

Novel Polydimethylsiloxane (PDMS) Pulsatile Vascular Tissue Phantoms for the In-Vitro Investigation of Light Tissue Interaction in Photoplethysmography

Sensors, 2020
Currently there exists little knowledge or work in phantoms for the in-vitro evaluation of photoplethysmography (PPG), and its’ relationship with vascular mechanics.
Michelle Nomoni, James M. May, Panayiotis A. Kyriacou   +2 more
doaj   +1 more source

Reproducibility of identical solid phantoms [PDF]

, 2022
SIGNIFICANCE: Tissue-like solid phantoms with identical optical properties, known within tolerant uncertainty, are of crucial importance in diffuse optics for instrumentation assessment, interlaboratory comparison studies, industrial standards, and ...
Spinelli L., Pifferi A., Frabasile L., Lanka P., Lacerenza M., Qi H., Torricelli A., Zhao F., Levoni P., Cubeddu R.   +9 more
core   +1 more source