نتایج جستجو برای: direct digital subtraction radiography

تعداد نتایج: 746259  

Maryam Tofangchiha, Mojtaba Hossein Nahtaj, Neda Hajihassani,

Introduction: External root resorption is a clinical problem that often cannot be detected clinically. Thus, radiography plays a crucial role in its diagnosis. However, optimal radiographic quality with minimal radiation exposure {2.1 [EN] Verify English word/phrase choice} is an important factor in selecting the appropriate radiographic technique. The aim of this study was the comparison of ac...

2017
Sadaksharam Jayachandran

X‐rays were discovered in 1895 by Wilhelm Roentgen. Digital radiology has overtaken conventional screen‐film radiography since it was introduced in the mid‐1980s.[1] Digital imaging uses sensor of solid‐state, and information is presented and stored as an image using a computer. The dawn of the digital era in dental radiography came in 1987 with the first digital radiography system called radio...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
شیرین سخدری shirin sakhdari dental school, islamic azad university, tehran-iran.دانشکده دندانپزشکی، دانشگاه آزاد اسلامی، واحد تهران. پیمان مهرورزفر peyman mehrvarzfar dental school, islamic azad university, tehran-iran.دانشکده دندانپزشکی، دانشگاه آزاد اسلامی، واحد تهران. سمیه صفری somayeh safari مریم پژوتن maryam pazhutan dental school, islamic azad university, tehran-iran.دانشکده دندانپزشکی، دانشگاه آزاد اسلامی، واحد تهران محمدجواد خرازی فرد mohammad-javad kharazifard tehran university of medical sciences, tehran-iran.دانشگاه علوم پزشکی تهران

objective: vertical root fracture (vrf) is among the most common causes of endodontic treatment failures. this study aims to compare charge-coupled devices (ccd) and photostimulable phosphor plates (psp) for detection of vertical root fractures in endodontically treated teeth.   methods: in this diagnostic in vitro study, 40 maxillary anterior teeth were selected and after preparation and root ...

Journal: :AJR. American journal of roentgenology 2005
Marc C J M Kock Jan N M Ijzermans Karen Visser Shahid M Hussain Willem Weimar Peter M T Pattynama Gabriel P Krestin M G Myriam Hunink

OBJECTIVE The objective of our study was to evaluate the diagnostic agreement, the impact on decision making, and the costs of contrast-enhanced MR angiography and digital subtraction angiography in the workup of living renal donors. CONCLUSION Contrast-enhanced MR angiography for the preoperative evaluation of renal donors is superior to digital subtraction angiography in revealing vascular ...

Journal: :iranian endodontic journal 0
maryam tofangchiha assistant professor ,shahid beheshti university of medical sciences,dental faculty,oral medicine department mamak adel mahin bakhshi mahsa esfehani pantea nazeman mojgan ghorbani-elizeyi

introduction: vertical root fracture (vrf) is a complication which is chiefly diagnosed radiographically. recently, film-based radiography has been substituted with digital radiography. at the moment, there is a wide range of monitors available in the market for viewing digital images. the present study aims to compare the diagnostic accuracy, sensitivity and specificity of medical and conventi...

Journal: :Japanese Journal of Radiological Technology 1999

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