نتایج جستجو برای: ornl phantom

تعداد نتایج: 17596  

Journal: :Physical review 2022

The $R(1)$, $R(3)$, and $P(3)$ rovibrational transitions in the (2-0) overtone band of HD molecule are measured Doppler-free saturation using technique NICE-OHMS spectroscopy. For line, hitherto not observed saturation, we report a frequency $203\phantom{\rule{0.16em}{0ex}}821\phantom{\rule{0.16em}{0ex}}936\phantom{\rule{0.16em}{0ex}}805\phantom{\rule{0.16em}{0ex}}(60)$ kHz. dispersive line sha...

2015
Susanne Ziegler Bjoern W. Jakoby Harald Braun Daniel H. Paulus Harald H. Quick

BACKGROUND In integrated PET/MR hybrid imaging the evaluation of PET performance characteristics according to the NEMA standard NU 2-2007 is challenging because of incomplete MR-based attenuation correction (AC) for phantom imaging. In this study, a strategy for CT-based AC of the NEMA image quality (IQ) phantom is assessed. The method is systematically evaluated in NEMA IQ phantom measurements...

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

2002
Han Lim

NOTICE This technical report does not necessarily represent final EPA decisions or positions. It is intended to present technical analysis of issues using data that are currently available. The purpose in the release of such reports is to facilitate the exchange of technical information and to inform the public of technical developments which may form the basis for a final EPA decision, positio...

Journal: :journal of lasers in medical sciences 0
mohsen erfanzadeh laser and plasma research institute, shahid beheshti university.g.c., tehran, iran. saied alikhani laser and plasma research institute, shahid beheshti university.g.c., tehran, iran. mohammad ali ansari laser and plasma research institute, shahid beheshti university.g.c., tehran, iran. ezeddin mohajerani laser and plasma research institute, shahid beheshti university.g.c., tehran, iran.

introduction: in this study, arrangement of a low-cost optical tomography device compared to other methods such as frequency domain diffuse tomography or time domain diffuse tomography is reported. this low-cost diffuse optical imaging technique is based on the detection of light after propagation in tissue. these detected signals are applied to predict the location of in-homogeneities inside p...

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

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید