Results 31 to 40 of about 272,932 (318)

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

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 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

Development of quality standards for multi-center, longitudinal magnetic resonance imaging studies in clinical neuroscience [PDF]

open access: yes, 2020
Magnetic resonance imaging (MRI) data is generated by a complex procedure. Many possible sources of error exist which can lead to a worse signal. For example, hidden defective components of a MRI-scanner, changes in the static magnetic field caused by a ...
Vogelbacher, Christoph
core   +1 more source

Automatic phantom test pattern classification through transfer learning with deep neural networks [PDF]

open access: yes, 2020
Imaging phantoms are test patterns used to measure image quality in computer tomography (CT) systems. A new phantom platform (Mercury Phantom, Gammex) provides test patterns for estimating the task transfer function (TTF) or noise power spectrum (NPF) and simulates different patient sizes.
arxiv   +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

A Stable Phantom Material for Optical and Acoustic Imaging

open access: yesJournal of Visualized Experiments, 2023
Establishing tissue-mimicking biophotonic phantom materials that provide long-term stability are imperative to enable the comparison of biomedical imaging devices across vendors and institutions, support the development of internationally recognized standards, and assist the clinical translation of novel technologies.
Hacker, Lina   +6 more
openaire   +4 more sources

Additively manufactured test phantoms for mimicking soft tissue radiation attenuation in CBCT using Polyjet technology

open access: yesZeitschrift für Medizinische Physik, 2023
Objectives: To develop and validate a simple approach for building cost-effective imaging phantoms for Cone Beam Computed Tomography (CBCT) using a modified Polyjet additive manufacturing technology where a single material can mimic a range of human soft-
Sepideh Hatamikia   +11 more
doaj  

3D printing 18F radioactive phantoms for PET imaging

open access: yesEJNMMI Physics, 2021
Purpose Phantoms are routinely used in molecular imaging to assess scanner performance. However, traditional phantoms with fillable shapes do not replicate human anatomy.
Daniel Gillett   +8 more
doaj   +1 more source

Phantom reference image

open access: yes, 2020
A proton density weighted phantom ...
, Bruno, , Burak, , Pierre, Juergen
openaire   +2 more sources

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