Results 11 to 20 of about 33,291 (265)

Polyacrylamide hydrogel phantoms for performance evaluation of multispectral photoacoustic imaging systems

open access: yesPhotoacoustics, 2021
As photoacoustic imaging (PAI) begins to mature and undergo clinical translation, there is a need for well-validated, standardized performance test methods to support device development, quality control, and regulatory evaluation. Despite recent progress,
Ali Hariri   +5 more
doaj   +1 more source

Evaluation of MLC Thickness and Composite Effects on Collimation Parameters using EGSnrc and IAEA Phase Space Data [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: Recently, multileaf collimators (MLC) have become an important part of any LINAC collimation system because they reduce the treatment planning time and improve the conformity.
K Hadad, H Alipour
doaj   +1 more source

Computed Tomography Attenuation of Three-Dimensional (3D) Printing Materials—Depository to Aid in Constructing 3D-Printed Phantoms

open access: yesMicromachines, 2023
Three-dimensionally printed phantoms are increasingly used in medical imaging and research due to their cost-effectiveness and customizability, offering valuable alternatives to commercial phantoms.
Yuktesh Kalidindi   +9 more
doaj   +1 more source

Agarose Gel Characterization for the Fabrication of Brain Tissue Phantoms for Infrared Multispectral Vision Systems

open access: yesGels, 2023
Synthetic phantoms that recreate the characteristics of biological tissues are valuable tools for systematically studying and comprehending physiologies, pathologies, and biological processes related to tissues. The reproduction of mechanical and optical
Efraín Albor-Ramírez   +4 more
doaj   +1 more source

A review of carotid artery phantoms for doppler ultrasound applications

open access: yesJournal of Medical Ultrasound, 2021
Ultrasound imaging systems need tissue-mimicking phantoms with a good range of acoustic properties. Many studies on carotid artery phantoms have been carried out using ultrasound; hence this study presents a review of the different forms of carotid ...
Kyermang Kyense Dakok   +4 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

Comparisons of Hounsfield Unit Linearity between Images Reconstructed using an Adaptive Iterative Dose Reduction (AIDR) and a Filter Back-Projection (FBP) Techniques [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: The HU linearity is an essential parameter in a quantitative imaging and the treatment planning systems of radiotherapy. Objective: This study aims to evaluate the linearity of Hounsfield unit (HU) in applying the adaptive iterative dose ...
I Suyudi   +4 more
doaj   +1 more source

A brief review for common doppler ultrasound flow phantoms

open access: yesJournal of Medical Ultrasound, 2020
In this review, the flow phantoms and the wall-less flow phantoms with recognized acoustic features (attenuation and speed of sound), interior properties, and dimensions of tissue were prepared, calibrated, and characterized by Doppler ultrasound (US ...
Sabri M Shalbi   +5 more
doaj   +1 more source

Development and application of stable phantoms for the evaluation of photoacoustic imaging instruments. [PDF]

open access: yesPLoS ONE, 2013
Photoacoustic imaging combines the high contrast of optical imaging with the spatial resolution and penetration depth of ultrasound. This technique holds tremendous potential for imaging in small animals and importantly, is clinically translatable.
Sarah E Bohndiek   +4 more
doaj   +1 more source

Establishment of Diagnostic Reference Levels for Computed Tomography Scanning in Hamadan [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: New advancements have increased the capabilities of computed tomography as a sectional medical imaging modality. An important note is assessing absorbed dose to patients and minimizing it when performing computed tomography examinations.
S Jafari   +5 more
doaj   +1 more source

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