Results 41 to 50 of about 2,962,605 (298)

A feasible and automatic free tool for T1 and ECV mapping [PDF]

, 2017
Purpose: Cardiac magnetic resonance (CMR) is a useful non-invasive tool for characterizing tissues and detecting myocardial fibrosis and edema. Estimation of extracellular volume fraction (ECV) using T1 sequences is emerging as an accurate biomarker in ...
Altabella, Luisa, Borrazzo, Cristian, Carbone, Iacopo, Carni', Marco, Catalano, Carlo, DI CASTRO, Elisabetta, Fiorelli, Andrea, Francone, Marco, Galea, Nicola   +8 more
core   +1 more source

Kernel-based Image Reconstruction from Scattered Radon Data [PDF]

, 2016
Computerized tomography requires suitable numerical methods for the approximation of a bivariate function f from a finite set of discrete Radon data, each of whose data samples represents one line integral of f .
DE MARCHI, Stefano, Iske, Armin, Sironi, Amos   +2 more
core   +1 more source

A Review on the 3D Printing of Functional Structures for Medical Phantoms and Regenerated Tissue and Organ Applications

Engineering, 2017
Medical models, or “phantoms,” have been widely used for medical training and for doctor-patient interactions. They are increasingly used for surgical planning, medical computational models, algorithm verification and validation, and medical devices ...
Kan Wang, Chia-Che Ho, Chuck Zhang, Ben Wang   +3 more
doaj   +1 more source

Exposure computational models with voxel phantoms coupled to EGSnrc Monte Carlo code

Brazilian Journal of Radiation Sciences, 2023
In computational dosimetry of ionizing radiation, the energy deposited in radiosensitive organs and tissues is evaluated when an anthropomorphic simulator (phantom) is irradiated using Exposure Computational Models (ECMs).
José Wilson Vieira, Viriato Leal Neto, Pedro Henrique Avelino de Andrade, Alex Cristóvão Holanda de Oliveira, Vanildo Júnior de Melo Lima, Isabelle Viviane Batista de Lacerda, Luís Rodrigo Dandrada, Arykerne Nascimento Casado da Silva, William de Souza Santos, Ivan Eufrázio de Santana, Whoody Alem Wanderley Araripe Farias, Larissa Cristina Silva dos Santos, Fernanda Gonçalves Oliveira, Fernando Roberto de Andrade Lima   +13 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

Ensemble tractography [PDF]

, 2016
Fiber tractography uses diffusion MRI to estimate the trajectory and cortical projection zones of white matter fascicles in the living human brain. There are many different tractography algorithms and each requires the user to set several parameters ...
Caiafa, César Federico, Pestilli, Franco, Takemura, Hiromasa, Wandell, Brian A.   +3 more
core   +3 more sources

A Direct D-Bar Method for Partial Boundary Data Electrical Impedance Tomography With a Priori Information [PDF]

, 2017
Electrical Impedance Tomography (EIT) is a non-invasive imaging modality that uses surface electrical measurements to determine the internal conductivity of a body.
Alsaker, Melody, Hamilton, Sarah J., Hauptmann, Andreas   +2 more
core   +2 more sources

TomoPhantom, a software package to generate 2D–4D analytical phantoms for CT image reconstruction algorithm benchmarks

SoftwareX, 2018
In the field of computerized tomographic imaging, many novel reconstruction techniques are routinely tested using simplistic numerical phantoms, e.g. the well-known Shepp–Logan phantom.
Daniil Kazantsev, Valery Pickalov, Srikanth Nagella, Edoardo Pasca, Philip J. Withers   +4 more
doaj   +1 more source

Methodological approach to development of dosimetric models of the human skeleton for beta-emitting radionuclides

Радиационная гигиена, 2019
Objective of the study: to develop a skeleton model for assessing red bone marrow dose from osteotropic beta-emitting radionuclides. This article describes the modeling methodology which takes into account the individual variability of the macro- and ...
M. O. Degteva, E. A. Shishkina, E. I. Tolstykh, V. I. Zalyapin, P. A. Sharagin, M. A. Smith, B. A. Napier   +6 more
doaj   +1 more source

Accelerated High-Resolution Photoacoustic Tomography via Compressed Sensing [PDF]

, 2016
Current 3D photoacoustic tomography (PAT) systems offer either high image quality or high frame rates but are not able to deliver high spatial and temporal resolution simultaneously, which limits their ability to image dynamic processes in living tissue.
Arridge, Simon, Beard, Paul, Betcke, Marta, Cox, Ben, Huynh, Nam, Lucka, Felix, Ogunlade, Olumide, Zhang, Edward   +7 more
core   +2 more sources