نتایج جستجو برای: ray radiography
تعداد نتایج: 313003 فیلتر نتایج به سال:
BACKGROUND Ultrasound (US) is a good first-line alternative for the diagnosis of bone fractures in adults as well as children. Our study shows that, compared to X-ray, in a resource-constrained environment, on-site US has a high sensitivity (98%) and specificity (96%) in the diagnosis of bone fractures. PURPOSE To compare the accuracy of on-the-spot US with conventional radiography in the scr...
Radiography has been part of chiropractic diagnostics since shortly after its discovery in 1895, the same year D.D. Palmer discovered chiropractic. In fact, it was B.J. Palmer who brought x-ray to chiropractic in 1910.1 This is what led to a very interesting and rich chiropractic history of technique innovators with their varied radiographic biomechanical analysis systems. Many different x-ray ...
Several tests of radiology have been designed to predict difficult laryngoscopy, but there were few relative studies of Chinese patients. Our study is to investigate the accuracy of lateral neck radiography in predicting difficult laryngoscopy in Chinese patients. The operative database of Xuanwu Hospital, Capital Medical University, was reviewed and all the patients who had performed lateral n...
تعیین زاویه افقی مناسب اشعه جهت جداسازی کانال های دندان پرمولر اول ماگزیلای دو کاناله بصورت برون تنی
چکیده ندارد.
abstract background: the x-ray machines used for radiodiagnosis should meet certain quality assurance (qa) programmes . these are necessary to have good quality radiographs at reasonably low exposure to patients. materials and methods: dose reduction methods in abdomen x-ray examination were carried out in 10 hospitals in tehran. this paper presents the work, which was implemented on 200 pa...
Novel radiography approaches based on the wave nature of x-rays when propagating through matter have a great potential for improved future x-ray diagnostics in the clinics. Here, we present a significant milestone in this imaging method: in-vivo multi-contrast x-ray imaging of a mouse using a compact scanner. Of particular interest is the enhanced contrast in regions related to the respiratory ...
Digital x-ray radiographic systems are desirable as they offer high quality images which can be processed, transferred, and stored without secondary steps. However, current clinical systems are extraordinarily expensive in comparison to film-based systems. Thus, there is a need for an economical digital imaging system for general radiology. The x-ray light valve (XLV) is a novel digital x-ray d...
OBJECTIVE To study an established triage nurse x ray requesting system to determine whether sending defined groups of patients for radiography before assessment by doctors or emergency nurse practitioners (ENPs) resulted in shorter waiting times for patients without compromising quality of care. METHODS Prospective randomised controlled study of "walking wounded" patients attending a district...
Das/Cheng/Pai/AAPM//2002 Historical Perspective 1826 Joseph Niepce First Photograph 1836 J. M. Daguerre Concept of developer 1889 Eastman Kodak Cellulose nitrate base for emulsion 1890 Hurter &Driffield Defined the term optical density 1895 Roentgen First Radiograph 1896 Carl Schlussner First glass plate for radiography 1913 Kodak Film on Cellulose nitrate base 1918 Kodak Double emulsion film 1...
BACKGROUND This study was to investigate the relationship among aortic artery calcification (AAC), cardiac valve calcification (CVC), and mortality in maintenance hemodialysis (MHD) patients. METHODS All MHD patients in Shanghai Ruijin Hospital in July 2011 were included. To follow up for 42 months, clinical data, predialysis blood tests, echocardiography, and lateral lumbar X-ray plain radio...
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