Results 11 to 20 of about 138,343 (192)

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

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

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

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

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

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

Assessment of image quality and dose calculation accuracy on kV CBCT, MV CBCT, and MV CT images for urgent palliative radiotherapy treatments. [PDF]

open access: yes, 2016
A clinical workflow was developed for urgent palliative radiotherapy treatments that integrates patient simulation, planning, quality assurance, and treatment in one 30-minute session.
Barani, Igor   +9 more
core   +1 more source

Development of 3D-Printed Heterogeneous Tumour Phantom for Quantitative Analysis in PET/CT Imaging [PDF]

open access: yesMATEC Web of Conferences, 2021
Tumours are heterogenous growths that consists of different types of cells with varying genetic expressions. The complex structure of the tumour makes cancer treatment difficult due to the heterogeneity of each of the cancer cells that react differently ...
Tang Ming Zhao   +3 more
doaj   +1 more source

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