Results 21 to 30 of about 6,084,382 (354)

Materials for phantoms for terahertz pulsed imaging [PDF]

open access: yesPhysics in Medicine and Biology, 2004
Phantoms are commonly used in medical imaging for quality assurance, calibration, research and teaching. They may include test patterns or simulations of organs, but in either case a tissue substitute medium is an important component of the phantom. The aim of this work was to identify materials suitable for use as tissue substitutes for the relatively
Gillian C. Walker   +3 more
openaire   +3 more sources

Developing a Phantom for the Positronium Imaging Evaluation

open access: yesActa 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.   +2 more
openaire   +2 more sources

Classification of phantoms for medical imaging

open access: yesProcedia CIRP, 2023
Phantoms are physical models that mimic biological tissue and its properties in medical imaging. They play an important role in medical quality assurance, research, education, and training, since they can offer an adequate test environment. As the use of medical imaging modalities is a growing field in medicine phantoms are likewise evolving very ...
Wegner, Marie   +2 more
openaire   +1 more source

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

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

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

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

Tissue mimicking phantoms for fluorescence imaging [PDF]

open access: yesSaratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine, 2020
The article describes the development of the optical phantom mimicking flavin adenine dinucleotide (FAD) and skin collagen fluorescence. The results of experimental studies using fluorescence imaging and fluorescence spectroscopy methods are demonstrated. The method of optical phantom production for quick calibration of fluorescence imaging devices for
Shupletsov, V. (Valery)   +8 more
openaire   +4 more sources

Modified Contrast-Detail Phantom for Determination of the CT Scanners Abilities for Low-Contrast Detection

open access: yesApplied Sciences, 2021
Computerised tomography (CT) continues to be a corner stone medical and radiologic imaging modalities in radiology and radiotherapy departments. Its importance lies in its efficiency in low contrast detectability (LCD).
Moshi Geso   +10 more
doaj   +1 more source

Assessment of CT Imaging Protocols Impacts on Calculation of Point Dose in Water Phantom using Radiotherapy Treatment Planning System

open access: yesFrontiers in Biomedical Technologies, 2020
Purpose: Point dose calculation in the Treatment Planning System (TPS) is performed using Computed Tomography (CT) images because CT images data have the tissue electron density information.
Gholamreza Fallah Mohammadi   +1 more
doaj   +1 more source

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