Results 101 to 110 of about 6,983,337 (380)

Functional imaging equivalence and proof of concept for image-guided adaptive radiotherapy with fixed gantry and rotating couch

Advances in Radiation Oncology, 2016
Purpose: The purpose of this article is to present the first imaging experiments to demonstrate the functional equivalence between a conventional rotational gantry and a fixed-beam imaging geometry, and the feasibility of an iterative image ...
Ilana Feain, PhD, Chun-Chien Shieh, PhD, Paul White, MMedPhys, Ricky O'Brien, PhD, Sandra Fisher, MMedPhys, William Counter, PhD, Peter Lazarakis, PhD, David Stewart, BRadTherapy, Simon Downes, MMedPhys, Michael Jackson, MBBS, Siddhartha Baxi, MBBS, Brendan Whelan, PhD, Kuldeep Makhija, BSc, Chen-Yu Huang, PhD, Michael Barton, MBBS, Paul Keall, PhD   +15 more
doaj   +1 more source

Tutorial on phantoms for photoacoustic imaging applications

Journal of Biomedical Optics
Photoacoustic imaging (PAI) is an emerging technology that holds high promise in a wide range of clinical applications, but standardized methods for system testing are lacking, impeding objective device performance evaluation, calibration, and inter-device comparisons.
Lina Hacker, James Joseph, Ledia Lilaj, Srirang Manohar, Aoife M. Ivory, Ran Tao, Sarah E. Bohndiek, null Members of IPASC   +7 more
openaire   +4 more sources

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi, Daisuke Katagiri, Takeyuki Watadani, Shunichi Matsuda, Hiroshi Kaneko, Noritoshi Arai   +5 more
wiley   +1 more source

High-speed, high-frequency ultrasound, \u3ci\u3ein utero\u3c/i\u3e vector-flow imaging of mouse embryos [PDF]

, 2019
Real-time imaging of the embryonic murine cardiovascular system is challenging due to the small size of the mouse embryo and rapid heart rate. High-frequency, linear-array ultrasound systems designed for small-animal imaging provide high-frame-rate and ...
Aristizabal, Orlando, Ketterling, Jeffrey A., Phoon, Colin K. L., Silverman, Ronald H., Turnbull, Daniel H., Yiu, Billy Y. S., Yu, Alfred C. H.   +6 more
core   +1 more source

Simulations of a micro-PET System based on Liquid Xenon

, 2011
The imaging performance of a high-resolution preclinical microPET system employing liquid xenon as the gamma ray detection medium was simulated. The arrangement comprises a ring of detectors consisting of trapezoidal LXe time projection ionization ...
Andreyev, A., Bryman, D., Glister, J., Kurchaninov, L., Lu, P., Miceli, A., Muennich, A., Retiere, F., Sossi, V.   +8 more
core   +1 more source

Characterisation of a phantom for multiwavelength quantitative photoacoustic imaging

Physics in Medicine and Biology, 2016
Quantitative photoacoustic imaging (qPAI) has the potential to provide high- resolution in vivo images of chromophore concentration, which may be indicative of tissue function and pathology.
Martina Fonseca, B. Zeqiri, P. Beard, B. Cox   +3 more
semanticscholar   +1 more source

Seeing the phantom: A functional magnetic resonance imaging study of a supernumerary phantom limb

Annals of Neurology, 2009
AbstractObjectiveSupernumerary phantom limb (SPL) is a rare neurological manifestation where patients with a severe stroke‐induced sensorimotor deficit experience the illusory presence of an extra limb that duplicates a real one. The illusion is most often experienced as a somesthetic phantom, but rarer SPLs may be intentionally triggered or seen. Here,
Khateb, Asaid, Simon, Stéphane R., Dieguez, Sebastian, Lazeyras, François, Momjian-Mayor, Isabelle, Blanke, Olaf, Landis, Theodor, Pegna, Alan J., Annoni, Jean-Marie   +8 more
openaire   +7 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Probabilistic approach to limited-data computed tomography reconstruction

, 2019
In this work, we consider the inverse problem of reconstructing the internal structure of an object from limited x-ray projections. We use a Gaussian process prior to model the target function and estimate its (hyper)parameters from measured data.
Jidling, Carl, Purisha, Zenith, Schön, Thomas B., Särkkä, Simo, Wahlström, Niklas   +4 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source