نتایج جستجو برای: phantom

تعداد نتایج: 17254  

Journal: :Physical review 2022

Electron-phonon physics has become an integral part of today's materials science world. In this work, the authors present $a\phantom{\rule{0}{0ex}}b$ $i\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}o$ results for zero-point renormalization band gap various semiconductors and insulators. They use a new implementation VASP c...

2004
Laxmaiah Manchikanti Vijay Singh

From Pain Management Center of Paducah, Paducah, Kentucky, and Pain Diagnostic Associates, Niagara, Wisconsin. Address Correspondence: Laxmaiah Manchikanti, MD, 2831 Lone Oak Road, Paducah, Kentucky 42003 E-mail: [email protected] Funding: There was no external funding in preparation of this manuscript. Conflict of Interest: None Since the first medical description of post-amputation phenomena repor...

Journal: :International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2021

Introduction: Radiotherapy is one of the important treatment modalities in cancer treatment. To maintain procedure accuracy, phantom an essential tool for absolute dosimetry conformation and Quality Assurance routine cheek up. This work aims to study absorbed dose various phantoms hence make a comparison result with IAEA recommendation (TRS 398) daily QA Linac. Materials Methods: The experiment...

H.K. Lee, J.H. Cho, J.W. Hong,

Background: This study assessed the clinical usefulness of the solid phantom, which may compensate for the disadvantages of the water phantom, by comparing the radiological doses between the two depending on their depths. Materials and Methods: The experimental equipment used was a linear accelerator for medical use, water phantom, solid phantom, Farmer type ion chamber and electrometer. The di...

2014
Kim J. Boström Marc H. E. de Lussanet Thomas Weiss Christian Puta Heiko Wagner

Amputation often leads to painful phantom sensations, whose pathogenesis is still unclear. Supported by experimental findings, an explanatory model has been proposed that identifies maladaptive reorganization of the primary somatosensory cortex (S1) as a cause of phantom pain. However, it was recently found that BOLD activity during voluntary movements of the phantom positively correlates with ...

Journal: :Journal of rehabilitation medicine 2009
Roberto Casale Francesco Ceccherelli Alaa Abd Elaziz Mohamed Labeeb Gabriele E M Biella

OBJECTIVE To ascertain the existence of contralateral painful muscle areas mirroring phantom pain and to evaluate the short-term effects of anaesthetic vs saline, injected contra notlaterally to control phantom and phantom limb pain. DESIGN Double-blinded cross-over study. SETTING Inpatients; rehabilitation institute. PARTICIPANTS Eight lower limb amputees with phantom limb pain in the pa...

Journal: :iranian journal of medical physics 0
ali aghaebrahimian department of physics, isfahan university of technology, isfahan, iran mohammad hassan alamatsaz department of physics, isfahan university of technology, isfahan, iran

introduction the gamma knife system is designed solely for non-invasive treatment of brain disorders, and it benefits from stereotactic surgical techniques. dose calculations required in the system are performed by gammaplan code; in this code, brain tissue is considered uniform. in the present study, we evaluated the effect of gamma knife system on the obtained dose through simulating a real h...

2017
Om Prakash Gurjar Radha Kishan Paliwal Surendra Prasad Mishra

The aim is to study the density, isodose depths, and doses at different points in slab-pinewood-slab (SPS) phantom, solid phantom SP34 (made up of polystyrene), and chest level of actual patient for developing heterogeneous chest phantom mimicking thoracic region of human body. A 6 MV photon beam of field size of 10 cm × 10 cm was directed perpendicular to the surface of computed tomography (CT...

2012
Krishna Murthy

Purpose: To validate a locally fabricated phantom of Imatrixx-2D Array by comparing its results with ArcCheck phantom and comparing portal dosimetry measurements with the two phantom studies. Materials and Methods: Electronic Portal Imaging Devices and Epiqa software were used for portal dosimetry. An Imatrixx-2D array with a locally fabricated phantom and ArcCheck cylindrical phantom were used...

Journal: :Acupuncture in medicine : journal of the British Medical Acupuncture Society 2004
David Bradbrook

Three case histories are presented in which amputees with acute or chronic phantom limb pain and phantom limb sensation were treated with Western medical acupuncture, needling the asymptomatic intact limb. Two out of the three cases reported complete relief of their phantom limb pain and phantom limb sensation. Acupuncture was successful in treating phantom phenomena in two of these cases, but ...

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