Results 21 to 30 of about 223,710 (297)

Details preserved unsupervised depth estimation by fusing traditional stereo knowledge from laparoscopic images

open access: yesHealthcare Technology Letters, 2019
Depth estimation plays an important role in vision-based laparoscope surgical navigation systems. Most learning-based depth estimation methods require ground truth depth or disparity images for training; however, these data are difficult to obtain in ...
Huoling Luo, Qingmao Hu, Fucang Jia
doaj   +1 more source

Analysis of the Attenuation Coefficient of Composite Silicone Rubber and Gliceryn for Soft Tissue Phantom Applications [PDF]

open access: yesIranian Journal of Medical Physics, 2020
Introduction: Phantom is an object that can be used to investigate the accuracy of radiation dose delivered to patients. Phantom is usually produced from the combination of the silicone rubber as a matrix and glycerin as a filler to form a composite for ...
Asnaeni Ansar   +6 more
doaj   +1 more source

3D printing of radioactive phantoms for nuclear medicine imaging

open access: yesEJNMMI Physics, 2020
Background For multicenter clinical studies, PET/CT and SPECT/CT scanners need to be validated to ensure comparability between various scanner types and brands.
T. Läppchen   +7 more
semanticscholar   +1 more source

Novel Polydimethylsiloxane (PDMS) Pulsatile Vascular Tissue Phantoms for the In-Vitro Investigation of Light Tissue Interaction in Photoplethysmography

open access: yesSensors, 2020
Currently there exists little knowledge or work in phantoms for the in-vitro evaluation of photoplethysmography (PPG), and its’ relationship with vascular mechanics.
Michelle Nomoni   +2 more
doaj   +1 more source

Tissue Phantoms for Biomedical Applications in Raman Spectroscopy: A Review

open access: yesBiomedical Engineering and Computational Biology, 2020
Raman spectroscopy is a group of analytical techniques, currently applied in several research fields, including clinical diagnostics. Tissue-mimicking optical phantoms have been established as an essential intermediate stage for medical applications with
M. Vardaki, N. Kourkoumelis
semanticscholar   +1 more source

A multi-purpose phantom kit for magnetic particle imaging

open access: yesCurrent Directions in Biomedical Engineering, 2021
Phantoms are essential tools for the development and characterization of Magnetic Particle Imaging (MPI), an imaging technique that can quantitatively map the spatial distribution of magnetic nanoparticles (MNP).
Löwa Norbert   +5 more
doaj   +1 more source

Recent advances on the development of phantoms using 3D printing for imaging with CT, MRI, PET, SPECT, and ultrasound

open access: yesMedical Physics (Lancaster), 2018
Purpose Printing technology, capable of producing three‐dimensional (3D) objects, has evolved in recent years and provides potential for developing reproducible and sophisticated physical phantoms.
Valeria Filippou, C. Tsoumpas
semanticscholar   +1 more source

A Systematic Review on 3D-Printed Imaging and Dosimetry Phantoms in Radiation Therapy

open access: yesTechnology in Cancer Research and Treatment, 2019
Introduction: Additive manufacturing or 3-dimensional printing has become a widespread technology with many applications in medicine. We have conducted a systematic review of its application in radiation oncology with a particular emphasis on the ...
R. Tino   +4 more
semanticscholar   +1 more source

Head-compliant microstrip split ring resonator for non-invasive healing monitoring after craniosynostosis-based surgery

open access: yesHealthcare Technology Letters, 2019
A soft and highly directive, proximity-coupled split-ring resonator fabricated with a liquid alloy, copper and polydimethylsiloxane (PDMS) is presented. The same was designed for sensing osteogenesis of calvarial bone.
Mauricio David Perez   +10 more
doaj   +1 more source

Quantum Iterative Reconstruction for Low-Dose Ultra-High-Resolution Photon-Counting Detector CT of the Lung

open access: yesDiagnostics, 2022
The aim of this study was to characterize image quality and to determine the optimal strength levels of a novel iterative reconstruction algorithm (quantum iterative reconstruction, QIR) for low-dose, ultra-high-resolution (UHR) photon-counting detector ...
Thomas Sartoretti   +9 more
doaj   +1 more source

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