نتایج جستجو برای: phantom

تعداد نتایج: 17254  

2012
Yasuhide Nagoshi Akira Watanabe Saiko Inoue Tomoki Kuroda Mitsuo Nakamura Yoshitake Matsumoto Kenji Fukui

BACKGROUND Amputation of an extremity often results in the sensation of a "phantom limb" where the patient feels that the limb that has been amputated is still present. This is frequently accompanied by "phantom limb pain". We report here the use of milnacipran, a serotonin and norepinephrine reuptake inhibitor, to treat phantom limb pain after amputation of injured or diseased limbs in three p...

Journal: :Brain : a journal of neurology 2006
Karen T Reilly Catherine Mercier Marc H Schieber Angela Sirigu

The loss of a limb leads to sensorimotor modifications that are frequently accompanied by the vivid experience that the missing limb is still present, and that it can be moved at will. Furthermore, amputees can clearly distinguish between phantom movements of the fingers and of more proximal joints, like movements of the elbow. This phenomenon raises the question of whether these specific phant...

2017
Min-Joo Kim Seu-Ran Lee Min-Young Lee Jason W Sohn Hyong Geon Yun Joon Yong Choi Sang Won Jeon Tae Suk Suh

Development and comparison of spine-shaped phantoms generated by two different 3D-printing technologies, digital light processing (DLP) and Polyjet has been purposed to utilize in patient-specific quality assurance (QA) of stereotactic body radiation treatment. The developed 3D-printed spine QA phantom consisted of an acrylic body phantom and a 3D-printed spine shaped object. DLP and Polyjet 3D...

Journal: :Physical Review C 2021

Background: About 50% of heavy elements are produced by the slow neutron capture process ($s$ process) in stars. The element gallium is mostly during weak $s$ massive stars.Purpose: Our activation at ${k}_{\mathrm{B}}T\phantom{\rule{4pt}{0ex}}\ensuremath{\approx}25$ keV first experiment a series and time-of-flight measurements on $^{69}\mathrm{Ga}$ $^{71}\mathrm{Ga}$ relevant for astrophysics.M...

Journal: :Proceedings. Biological sciences 1996
V S Ramachandran D Rogers-Ramachandran

Although there is a vast clinical literature on phantom limbs, there have been no experimental studies on the effects of visual input on phantom sensations. We introduce an inexpensive new device--a 'virtual reality box'--to resurrect the phantom visually to study inter-sensory effects. A mirror is placed vertically on the table so that the mirror reflection of the patient's intact had is 'supe...

Ghazale Geraily, Heydar Toolee Shaghayegh Fahimi Monzari

Introduction: Total Skin Electron Therapy (TSET) and Total Body Irradiation (TBI) are kinds of treatment which use electron and photon beams to treat special types of cancers. The aim of these techniques are to deliver uniform dose to the entire skin while minimizing delivered dose to organs at risk. To check the homogeneity of dose delivery in TBI and TSET, using a humanoid ph...

ذکریایی, سید سلمان, صبا, ولی اله,

Introduction: In diagnostic and therapeutic procedures, dosimetric studies are performed on the dosimetric systems in order to comply the radiation safety standards. Monte Carlo methods are used due to the high complexity and cost of patient-specific phantom construction. The high complexity of the digitized phantoms greatly increases the time and computational task of the Monte Carlo calculati...

2017
Syahir Mansor Elisabeth Pfaehler Dennis Heijtel Martin A. Lodge Ronald Boellaard Maqsood Yaqub

PURPOSE In longitudinal oncological and brain PET/CT studies, it is important to understand the repeatability of quantitative PET metrics in order to assess change in tracer uptake. The present studies were performed in order to assess precision as function of PET/CT system, reconstruction protocol, analysis method, scan duration (or image noise), and repositioning in the field of view. METHO...

Journal: :Physics in medicine and biology 2011
Melanie Freed Andreu Badal Robert J Jennings Hugo de las Heras Kyle J Myers Aldo Badano

The purpose of this study is to characterize the x-ray properties of a dual-modality, anthropomorphic breast phantom whose MRI properties have been previously evaluated. The goal of this phantom is to provide a platform for optimization and standardization of two- and three-dimensional x-ray and MRI breast imaging modalities for the purpose of lesion detection and discrimination. The phantom is...

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