نتایج جستجو برای: digital x ray

تعداد نتایج: 956573  

2017
Wenyang Zhao Kenji Sakurai

A visible-light digital camera is used for taking ordinary photos, but with new operational procedures it can measure the photon energy in the X-ray wavelength region and therefore see chemical elements. This report describes how one can observe X-rays by means of such an ordinary camera - The front cover of the camera is replaced by an opaque X-ray window to block visible light and to allow X-...

Journal: :journal of paramedical sciences 0
mojtaba navvabpour department of radiation technology paramedical sciences faculty, shahid beheshti university of medical sciences, tehran, iran mohammad navvabpour material engineering faculty, tehran university, tehran, iran mohammad ghane-e dehkordi medical radiation sciences faculty , shahid beheshti university of medical sciences, tehran, iran hossein nazari moghadam radiation technalogy sciences faculty , radiation technology department paramedical sciences , shahid beheshti university of medical sciences, tehran, iran seyed mohammad reza aazami department of radiation technology, 5 department of radiation technology,paramedical sciences faculty, shahid beheshti university of medical sciences, tehran, iran

the output of x-ray, especially in the field of required energy for diagnosing the disease is very low (in diagnosing lamps, it is less than 1%). in this kind of lamps the rest of the electrical energy is transformed to heat. this considerable amount of heat induces a myriad of too many limitations in choosing higher levels of radiation, particularly in specialized techniques. this process is t...

Background: Gonad shielding has been recommended during pelvic x-rays since the 1950s. The popular method of gonad shielding is placement a lead shield in the midline of the pelvis. The aim of this study was to evaluate the prevalence and utility of gonad shielding in pediatrics undergoing pelvic x-rays.Materials and MethodsFollowing study approval, we retrospectively retrieved data from the di...

Journal: :Nihon Hoshasen Gijutsu Gakkai zasshi 2011
Kimiya Noto Syuhei Minami Ayumi Morishita Tomohiro Yokoi Hiroji Iida Kosuke Matsubara Akihiro Takemura Kichiro Koshida

The purpose of this study was to optimize X-ray conditions for full spine X-ray examinations in slot-scan digital radiography (SSDR). Follow-up of spinal deformities, such as scoliosis, typically involves many radiographs of the patient throughout childhood and adolescence. The Radiation doses for the full spine X-ray examination should be minimized. Recently, SSDR has been introduced for full ...

Journal: :iranian journal of veterinary medicine 2013
mohsen nouri seyed hossein mardjanmehr alireza vajhi iraj norozian davoud faskhoudi

a5.2 year-old holstein cow was presented with lameness andabnormal weight bearing in a slaughterhouse. widening of theperiople and swelling of the heel area in the lateral claw was morepermanent than the medial claw. vertical fissure (vf) involvingthe coronary band to the middle of the dorsal wall of the medialhind claw was observed. it was also extended to the bearingsurface in the inner surfa...

Journal: :The Veterinary record 2006
Tim Davies

Journal: :Physics in medicine and biology 1997
M J Yaffe J A Rowlands

Digital radiography offers the potential of improved image quality as well as providing opportunities for advances in medical image management, computer-aided diagnosis and teleradiology. Image quality is intimately linked to the precise and accurate acquisition of information from the x-ray beam transmitted by the patient, i.e. to the performance of the x-ray detector. Detectors for digital ra...

Journal: :Journal of the Vacuum Society of Japan 2011

Journal: :Journal of the Royal Society of Medicine 2001

2004
R. Ghaffarian

The use of x-ray technique now become an additional inspection tool requirement for quality control and unique defect due to manufacturing for implementation of advanced electronic packages such as ball grid array (BGAs) and chip scale packages (CSPs). Recently, four x-ray systems were evaluated for their defect detection capability especially for damagekracks induced during thermal cycling of ...

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