نتایج جستجو برای: biological phantom

تعداد نتایج: 480117  

Journal: :Journal of Quantitative Spectroscopy & Radiative Transfer 2022

We develop a new three-dimensional time-dependent radiative transfer code, TRINITY (Time-dependent Radiative In Near-Infrared TomographY), for in-vivo diffuse optical tomography (DOT). The simulation code is based on the design of long radiation rays connecting boundaries computational domain, which allows us to calculate light propagation with little numerical diffusion. parallelize Message Pa...

Journal: :British journal of anaesthesia 1997
S W Wartan W Hamann J R Wedley I McColl

Using a mail-delivered questionnaire, we surveyed 590 veteran amputees concerning phantom pain, phantom sensation and stump pain. They were selected randomly from a population of 2974 veterans with long-standing limb amputation(s) using a computer random number generator. Eighty-nine percent responded and of these, 55% reported phantom limb pain and 56% stump pain. There was a strong correlatio...

Journal: :Japanese Journal of Radiological Technology 1991

Journal: :iranian journal of medical physics 0
mohammad taghi bahreyni toossi professor, medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran eftekhar rajab bolokat m.sc., in medical physics, mashhad university of medical sciences, mashhad, iran raham salek m.sc., in medical engineering, medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran shahram baiani associate professor, radiation oncology dept., omid hospital, mashhad university of medical sciences, mashhad, iran hamid gholamhoseinian ph.d., student, medical physics dept., faculty of medicine, mashhad university of medical sciences, mashhad, iran mohsen layegh m.sc., in medical physics, omid hospital, mashhad university of medical sciences, mashhad, iran.

introduction: nasopharyngeal carcinoma is one of the most common malignancies in the head and neck region and radiotherapy is its treatment of choice. in spite of the fact that it is widely used, due to the presence of many sensitive organs or tissues in this region, patients may suffer from a wide range of side effects. one such sensitive tissue is the spinal cord. if the absorbed dose to spin...

Journal: :Journal of Neurology, Neurosurgery & Psychiatry 1948

Journal: :Annals of the ICRP 2020

1998
J. DANIEL CHRISTENSEN MARK HOVEY

In the first part, we determine conditions on spectra X and Y under which either every map from X to Y is phantom, or no nonzero maps are. We also address the question of whether such all or nothing behaviour is preserved when X is replaced with V ∧ X for V finite. In the second part, we introduce chromatic phantom maps. A map is n-phantom if it is null when restricted to finite spectra of type...

Journal: :Journal of neurology, neurosurgery, and psychiatry 2000
L H Lu A M Barrett J E Cibula R L Gilmore E B Fennell K M Heilman

OBJECTIVE Patients who misperceive that they are moving their paralysed arm (phantom movements) may not recognise its weakness. Therefore, the relation between phantom limb movements and anosognosia for hemiplegia during selective right hemispheric anaesthesia (the Wada test) was examined. METHODS Nine patients with intractable epilepsy underwent the Wada test. During the right hemispheric in...

Journal: :Physical Review B 2021

We determined the crystal structure of ${\mathrm{Cs}}_{2}{\mathrm{LiRuCl}}_{6}$, which was synthesized in this work, and investigated its magnetic properties. ${\mathrm{Cs}}_{2}{\mathrm{LiRuCl}}_{6}$ has a hexagonal composed linear chains face-sharing ${\mathrm{RuCl}}_{6}$ ${\mathrm{LiCl}}_{6}$ octahedra. In two thirds structural chains, ${\mathrm{Ru}}^{3+}$ ${\mathrm{Li}}^{+}$ sites are almost...

Journal: :IEICE Transactions 2007
Qiang Chen Yasunori Komukai Kunio Sawaya

The peak SAR values of two-element array antennas for mobile handsets in the vicinity of a spherical phantom of a human head are evaluated numerically as a function of the distance between the array antenna and the head phantom when the two elements of a two-element array antenna are either co-phase voltage-fed or reverse-phase voltage-fed. It is found that relation between the worst case of th...

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