نتایج جستجو برای: digital radiography

تعداد نتایج: 325160  

Journal: :AJNR. American journal of neuroradiology 2005
Götz Benndorf Charles M Strother Benjamin Claus Ramin Naeini Hesham Morsi Richard Klucznik Michael E Mawad

We evaluated the feasibility of angiographic CT (ACT) for visualizing metallic stents in three patients who underwent intracranial (n = 2) or extracranial (n = 1) stent placement to treat atherosclerotic lesions. ACT is a new technique that provides cross-sectional CT-like images based on rotational radiography performed with a rotating C-arm-mounted flat-panel detector. ACT allowed for the cle...

2016
Weeraya Tantanapornkul Darika Mavin Jaruthai Prapaiphittayakun Natnicha Phipatboonyarat Wanchanok Julphantong

BACKGROUND The relationship between impacted mandibular third molar and mandibular canal is important for removal of this tooth. Panoramic radiography is one of the commonly used diagnostic tools for evaluating the relationship of these two structures. OBJECTIVES To evaluate the accuracy of panoramic radiographic findings in predicting direct contact between mandibular canal and impacted thir...

2007

Radiographic contrast-enhancement mask (RCM) algorithms were developed to overcome some limitations of general digital radiography (DR). Large attenuation differences of some anatomical regions result in exit radiation having a wide dynamic range. In general radiography, this results in anatomy not being fully visualised in the image or being displayed with suboptimal contrast. Physical tissue ...

2007
E Vano JM Fernandez Soto

PURPOSE To present the experience in patient dose management and the development of an online audit tool for digital radiography. MATERIALS AND METHODS Several tools have been developed to extract the information contained in the DICOM header of digital images, collect radiographic parameters, calculate patient entrance doses and other related parameters, and audit image quality. RESULTS Th...

Introduction: The study was undertaken to evaluate the practice of chest radiography using different digital imaging systems and its influence on dose and image quality.  Materials and Methods: The study was carried out in two hospitals from March 2016 to June 2016. Sixty ambulatory patients aged 21 to 60 years who were able to cooperate without difficulty and weighed between 60 to 80 kg were ...

Journal: :Medicina oral, patologia oral y cirugia bucal 2006
Vanessa Paredes José Luis Gandia Rosa Cibrián

Digital technology is becoming day by day a more important procedure in most of the clinic activities and, thus, orthodontists are increasingly adding digital technology to their orthodontics records. In this article we want to outline the advantages and disadvantages of the use of digital photography, digital radiography as well as one of the latest developments: the digital study stone casts....

2013
Leila Khojastepour Pegah Bronoosh Shahdad Khosropanah Elham Rahimi

OBJECTIVE To report the association of pulp calcification with that of cardiovascular disease (CVD) using digital panoramic dental radiographs. MATERIALS AND METHODS Digital panoramic radiographs of patients referred from the angiography department were included if the patient was under 55 years old and had non-restored or minimally restored molars and canines. An oral and maxillofacial radio...

2008
Ron PINCU

Digital radiography is earning its place in the NDT market, as specialists realize this technology surpasses Film and Film Replacement. Portable digital Radiography provides many benefits to users. Fast images upon request for immediate analysis mean there is no compromise on image quality and no repositioning. Vidisco flat panel systems enable the reduction of working time and costs while enla...

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...

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