Results 51 to 60 of about 6,210,221 (335)
TomographyObjectives: We evaluated the noise reduction effects of deep learning reconstruction (DLR) and hybrid iterative reconstruction (HIR) in brain computed tomography (CT).
Yusuke Inoue +6 more
doaj +1 more source
Preliminary Design and Evaluation of a B-Scan OCT-Guided Needle
Photonics, 2014 Real-time intraoperative B-scan optical coherence tomography (OCT) visualization of intraocular tissues is a desired ophthalmic feature during retinal procedures.
Karen M. Joos, Jin-Hui Shen
doaj +1 more source
Realistic 3D printed imaging tumor phantoms for validation of image processing algorithms [PDF]
arXiv, 2022 Medical imaging phantoms are widely used for validation and verification of imaging systems and algorithms in surgical guidance and radiation oncology procedures. Especially, for the performance evaluation of new algorithms in the field of medical imaging, manufactured phantoms need to replicate specific properties of the human body, e.g., tissue ...
arxiv
The Saccharomyces cerevisiae amino acid transporter Lyp1 has a broad substrate spectrum
FEBS Letters, EarlyView.In Saccharomyces cerevisiae, Yeast Amino acid Transporter family members mediate the import of amino acids, ranging from substrate specialists to generalists. Here, we show that the specialist transporter, Lyp1, has a broader substrate spectrum than previously described, with affinity constants spanning from micromolar to millimolar.
Foteini Karapanagioti +3 more
wiley +1 more source
Frontiers in Physics, 2023 Purpose: To investigate the feasibility of dual-modal on-board spectral-CT/CBCT imaging using a CZT photon-counting detector mounted on a Linac by Monte Carlo simulations.Methods: In this proof-of-concept study, the Monte Carlo software platform of ...
Fengsong Ye, Hui Wang, Jianqiang Fang
doaj +1 more source
Mechanically Powered Motion Imaging Phantoms: Proof of Concept [PDF]
, 2019 Motion imaging phantoms are expensive, bulky and difficult to transport and set-up. The purpose of this paper is to demonstrate a simple approach to the design of multi-modality motion imaging phantoms that use mechanically stored energy to produce motion. We propose two phantom designs that use mainsprings and elastic bands to store energy.
arxiv +1 more source
Silicone phantoms fabricated with multi-material extrusion 3D printing technology mimicking imaging properties of soft tissues in CT [PDF]
arXiv, 2022 Recently, 3D printing has been widely used to fabricate medical imaging phantoms. So far, various rigid 3D printable materials have been investigated for their radiological properties and efficiency in imaging phantom fabrication. However, flexible, soft tissue materials are also needed for imaging phantoms, which are used in various scenarios, such as
arxiv
Social context prevents heat hormetic effects against mutagens during fish development
FEBS Letters, EarlyView.This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere +5 more
wiley +1 more source
Construction of Low-Cost Simulators for Training in Minimally Invasive Breast Procedures
European Journal of Breast HealthObjective: The aim of this work was to describe a technique for building low-cost simulators for training in minimally invasive breast procedures guided by ultrasound (US) and stereotactic mammography (MMG), focusing mainly on training medical ...
Mirian Khéde Careta +3 more
doaj +1 more source
Triggered kV Imaging During Spine SBRT for Intrafraction Motion Management
Technology in Cancer Research & Treatment, 2021 Purpose: To monitor intrafraction motion during spine stereotactic body radiotherapy(SBRT) treatment delivery with readily available technology, we implemented triggered kV imaging using the on-board imager(OBI) of a modern medical linear accelerator ...
Jihye Koo +15 more
doaj +1 more source