Results 21 to 30 of about 62,132 (278)

MPI Phantom Study with A High-Performing Multicore Tracer Made by Coprecipitation [PDF]

open access: yes, 2019
Magnetic particle imaging (MPI) is a new imaging technique that detects the spatial distribution of magnetic nanoparticles (MNP) with the option of high temporal resolution.
Eberbeck, Dietmar   +8 more
core   +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

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 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

Influence of wall thickness and diameter on arterial shear wave elastography: a phantom and finite element study [PDF]

open access: yes, 2017
Quantitative, non-invasive and local measurements of arterial mechanical properties could be highly beneficial for early diagnosis of cardiovascular disease and follow up of treatment.
Bini, Fabiano   +6 more
core   +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

The validity and reliability of the exposure index as a metric for estimating the radiation dose to the patient [PDF]

open access: yes, 2020
Introduction With the introduction of digital radiography, the feedback between image quality and over-exposure has been partly lost which in some cases has led to a steady increase in dose.
A. England   +16 more
core   +4 more sources

Spherical deconvolution of multichannel diffusion MRI data with non-Gaussian noise models and spatial regularization [PDF]

open access: yes, 2015
Spherical deconvolution (SD) methods are widely used to estimate the intra-voxel white-matter fiber orientations from diffusion MRI data. However, while some of these methods assume a zero-mean Gaussian distribution for the underlying noise, its real ...
Aja-Fernández, Santiago   +13 more
core   +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

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

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