Results 21 to 30 of about 6,983,337 (380)

Realistic Dynamic Numerical Phantom for MRI of the Upper Vocal Tract

open access: yesJournal of Imaging, 2020
Dynamic and real-time MRI (rtMRI) of human speech is an active field of research, with interest from both the linguistics and clinical communities. At present, different research groups are investigating a range of rtMRI acquisition and reconstruction ...
Joe Martin   +3 more
doaj   +1 more source

Simulation of Capillary Hemodynamics and Comparison with Experimental Results of Microphantom Perfusion Weighted Imaging [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: Perfusion imaging, one of MRI’s techniques, is widely used to test damaged tissues of the body. The parameters used in this technique include cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time (MTT). The MRI scanner
S Shurche, N Riyahi Alam
doaj   +1 more source

Simulation Research of Multi-Pinhole Collimated L-Shell XFCT Imaging System

open access: yesIEEE Access, 2020
Polychromatic source X-ray fluorescence computed tomography (XFCT) is a novel imaging method, which is applied for the diagnosis and treatment studies of early stage cancer.
Yan Luo   +5 more
doaj   +1 more source

Evaluation of the ACR MRI phantom for quality assurance tests of 1.5 T MRI scanners in Estonian hospitals; pp. 328–334 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2014
Since its discovery, magnetic resonance imaging (MRI) has been one of the main methods of imaging in radiology. So far, there are not many national or international guidelines for MRI quality assurance compared to imaging methods that are using ionizing ...
Doris Kaljuste, Mait Nigul
doaj   +1 more source

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

open access: yesZeitschrift 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   +12 more
doaj   +1 more source

A quality assurance phantom for electronic portal imaging devices [PDF]

open access: yes, 2011
Electronic portal imaging device (EPID) plays an important role in radiation therapy portal imaging, geometric and dosimetric verification. Consistent image quality and stable radiation response is necessary for proper utilization that requires routine ...
Cao, Minsong   +6 more
core   +1 more source

iPads in Breast Imaging – A Phantom Study [PDF]

open access: yesGeburtshilfe und Frauenheilkunde, 2014
Introduction: Modern tablet PCs as the iPad are becoming more and more integrated into medicine. The aim of this study was to evaluate the display quality of iPads regarding digital mammography. Materials and Methods: Three experienced readers compared the display quality of the iPad 2 and 3 with a dedicated 10 megapixel (MP) mammography liquid crystal
M, Hammon   +4 more
openaire   +2 more sources

82786 Quantification of the Accuracy of Stereotactic Radiosurgery using Surface Guided Imaging with 3D Printed Head Phantoms

open access: yesJournal of Clinical and Translational Science, 2021
IMPACT: This work assesses clinical implementation of a surface guided imaging system to improve the accuracy radiation delivery for treatment of brain lesions using a patient CT derived head phantom. OBJECTIVES/GOALS: Advancements in radiotherapy design
Victoria Bry   +4 more
doaj   +1 more source

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

open access: yes, 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   +4 more
core   +3 more sources

UWB device for breast microwave imaging: phantom and clinical validations

open access: yesMeasurement, 2019
Microwave imaging has received increasing attention in the last decades, motivated by its application in diagnostic imaging. Such effort has been encouraged by the fact that, at microwave frequencies, it is possible to distinguish between tissues with ...
Alessandro Vispa   +9 more
semanticscholar   +1 more source

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