Results 31 to 40 of about 6,203,552 (359)

Quantitative characterization of viscoelastic behavior in tissue-mimicking phantoms and ex vivo animal tissues. [PDF]

open access: yes, 2018
Viscoelasticity of soft tissue is often related to pathology, and therefore, has become an important diagnostic indicator in the clinical assessment of suspect tissue.
Bajwa, Neha   +7 more
core   +10 more sources

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 microwave tomography with huber regularization applied to realistic numerical breast phantoms [PDF]

open access: yes, 2016
Quantitative active microwave imaging for breast cancer screening and therapy monitoring applications requires adequate reconstruction algorithms, in particular with regard to the nonlinearity and ill-posedness of the inverse problem.
Bai, Funing   +2 more
core   +2 more sources

Organosilicon phantom for photoacoustic imaging

open access: yesJournal of Biomedical Optics, 2015
Photoacoustic imaging is an emerging technique. Although commercially available photoacoustic imaging systems currently exist, the technology is still in its infancy. Therefore, the design of stable phantoms is essential to achieve semiquantitative evaluation of the performance of a photoacoustic system and can help optimize the properties of contrast ...
Francesco Faita   +12 more
openaire   +6 more sources

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

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 method for delineation of bone surfaces in photoacoustic computed tomography of the finger [PDF]

open access: yes, 2015
Photoacoustic imaging of interphalangeal peripheral joints is of interest in the context of using the synovial membrane as a surrogate marker of rheumatoid arthritis.
Biswas, Samir   +3 more
core   +3 more sources

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
Ruediger Schulz-Wendtland   +4 more
openaire   +3 more sources

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

A Monte Carlo study of organ and effective doses of cone beam computed tomography (CBCT) scans in radiotherapy [PDF]

open access: yes, 2017
Cone-beam CT (CBCT) scans utilized for image guided radiation therapy (IGRT) procedures have become an essential part of radiotherapy. The aim of this study was to assess organ and effective doses resulting from new CBCT scan protocols (head, thorax, and
Abuhaimed, Abdullah   +2 more
core   +1 more source

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