Results 81 to 90 of about 270,605 (207)

Characterization and standardization of tissue-simulating protoporphyrin IX optical phantoms

Journal of Biomedical Optics, 2016
. Optical devices for measuring protoporphryin IX (PpIX) fluorescence in tissue are routinely validated by measurements in optical phantoms. Yet there exists limited data to form a consensus on the recipe for phantoms that both mimic the optical ...
Mikael Marois, J. Bravo, S. Davis, S. Kanick   +3 more
semanticscholar   +1 more source

Relative phantom maps and rational homotopy [PDF]

arXiv, 2019
We generalize some results of Gray and McGibbon-Roitberg on relations between phantom maps and rational homotopy to relative phantom maps. Since the $\lim^1$ and the profinite completion techniques do not apply to relative phantom maps, we develop new techniques.
arxiv  

Correction of megavoltage cone-beam CT images of the pelvic region based on phantom measurements for dose calculation purposes. [PDF]

, 2009
Megavoltage cone-beam CT (MVCBCT) is an imaging technology that provides a 3D representation of the patient in treatment position. Because it is a form of x-ray tomography, MVCBCT images give information about the attenuation coefficients of the imaged ...
Aubry, Jean-François, Beaulieu, Luc, Cheung, Joey, Gottschalk, Alexander, Morin, Olivier, Pouliot, Jean   +5 more
core  

Characterization and evaluation of tissue-mimicking gelatin phantoms for use with MRgFUS

Journal of Therapeutic Ultrasound, 2015
BackgroundA tissue-mimicking phantom that accurately represents human-tissue properties is important for safety testing and for validating new imaging techniques.
Alexis I. Farrer, H. Odéen, J. de Bever, B. Coats, D. Parker, A. Payne, D. Christensen   +6 more
semanticscholar   +1 more source

Development of realistic physical breast phantoms matched to virtual breast phantoms based on human subject data.

Medical Physics (Lancaster), 2015
PURPOSE Physical phantoms are essential for the development, optimization, and evaluation of x-ray breast imaging systems. Recognizing the major effect of anatomy on image quality and clinical performance, such phantoms should ideally reflect the three ...
N. Kiarashi, A. Nolte, G. Sturgeon, W. Segars, S. Ghate, L. Nolte, E. Samei, J. Lo   +7 more
semanticscholar   +1 more source

A phantom supernumerary limb after a cervical root lesion [PDF]

, 1952
Macdonald Critchley
openalex   +1 more source

A Link Loss Model for the On-body Propagation Channel for Binaural Hearing Aids

, 2013
Binaural hearing aids communicate with each other through a wireless link for synchronization. A propagation model is needed to estimate the ear-to-ear link loss for such binaural hearing aids.
Chandra, Rohit, Johansson, Anders J
core   +1 more source

Soft Tissue Phantoms for Realistic Needle Insertion: A Comparative Study

Annals of Biomedical Engineering, 2015
Phantoms are common substitutes for soft tissues in biomechanical research and are usually tuned to match tissue properties using standard testing protocols at small strains.
A. Leibinger, A. Forte, Zhengchu Tan, M. Oldfield, F. Beyrau, D. Dini, F. Rodriguez y Baena   +6 more
semanticscholar   +1 more source

Geometric phantom categories do not admit Noetherian t-structures [PDF]

arXiv
There are no Noetherian or Artinian bounded t-structures on geometric phantom or quasi-phantom categories.
arxiv  

Technical Note: Characterization of custom 3D printed multimodality imaging phantoms.

Medical Physics (Lancaster), 2015
PURPOSE Imaging phantoms are important tools for researchers and technicians, but they can be costly and difficult to customize. Three dimensional (3D) printing is a widely available rapid prototyping technique that enables the fabrication of objects ...
M. Bieniosek, Brian J. Lee, C. Levin
semanticscholar   +1 more source