Results 11 to 20 of about 61,625 (311)
BMC Medical Imaging, 2021 Background The commonly used NEMA IEC Body phantom has a number of defects, hindering its application for detecting micro-lesions and measuring the performance parameters of computed tomography (CT).
Shujie Lu +5 more
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A cadaveric breast cancer tissue phantom for phase‐contrast X‐ray imaging applications
Animal Models and Experimental Medicine, 2023 Background As mammography X‐ray imaging technologies advance and provide elevated contrast in soft tissues, a need has developed for reliable imaging phantoms for use in system design and component calibration.
Cody C. Rounds +4 more
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Simulation of Capillary Hemodynamics and Comparison with Experimental Results of Microphantom Perfusion Weighted Imaging [PDF]
Journal 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
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Physics and Imaging in Radiation Oncology, 2023 Purpose: Periodic imaging quality assurance (QA) of magnetic resonance imaging linear accelerator (MRL) is critical. The feasibility of a new MRL imaging phantom used for QA in the low field was evaluated with automated image analysis of various ...
James J. Sohn +3 more
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Technology in Cancer Research & Treatment, 2022 Purpose: Radiomics entails the extraction of quantitative imaging biomarkers (or radiomics features) hypothesized to provide additional pathophysiological and/or clinical information compared to qualitative visual observation and interpretation.
Rebecka Ericsson-Szecsenyi MSc +7 more
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Zeitschrift 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
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Materials for phantoms for terahertz pulsed imaging [PDF]
Physics 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
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A standard system phantom for magnetic resonance imaging [PDF]
Magnetic Resonance in Medicine, 2021 PurposeA standard MRI system phantom has been designed and fabricated to assess scanner performance, stability, comparability and assess the accuracy of quantitative relaxation time imaging. The phantom is unique in having traceability to the International System of Units, a high level of precision, and monitoring by a national metrology institute ...
Karl F. Stupic +19 more
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Realistic Dynamic Numerical Phantom for MRI of the Upper Vocal Tract
Journal 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
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Developing a Phantom for the Positronium Imaging Evaluation
Acta 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
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