نتایج جستجو برای: computed radiography

تعداد نتایج: 226905  

2015
Fatemeh Salemi Abbas Shokri Hamed Mortazavi Maryam Baharvand

OBJECTIVES Radiographic examination is one of the most important parts of the clinical assessment routine for temporomandibular disorders. The aim of this study was to compare the diagnostic accuracy of cone-beam computed tomography(CBCT) with panoramic radiography and spiral computed tomography for the detection of the simulated mandibular condyle bone lesions. STUDY DESIGN The sample consis...

Journal: :Thorax 2002
N L Müller H Coxson

The role of chest radiography and computed tomography in the evaluation of pulmonary emphysema and chronic bronchitis is reviewed.

Journal: :Radiation protection dosimetry 2013
Juha Koivisto Timo Kiljunen Jan Wolff Mika Kortesniemi

The objective of this study was to assess and compare the organ and effective doses in the knee area resulting from different commercially available multislice computed tomography devices (MSCT), one cone beam computed tomography device (CBCT) and one conventional X-ray radiography device using MOSFET dosemeters and an anthropomorphic RANDO knee phantom. Measurements of the MSCT devices resulte...

Journal: :Dento maxillo facial radiology 2002
C Bou Serhal R Jacobs L Flygare M Quirynen D van Steenberghe

AIM To assess the accuracy of panoramic radiography and spiral or computed tomography for the localisation of the mental foramen. MATERIALS AND METHODS The distance from the alveolar crest to the mental foramen was measured from panoramic radiographs, spiral tomograms and CT scans. The same distance was measured during implant surgery using a specially designed caliper. RESULTS Panoramic ra...

H Montazer lotf elahi , M Dehghani, M Moeini, R Bardal,

Background and Aim: Cone beam computed tomography (CBCT) produces high-quality data in periodontal diagnosis and treatment planning. The aim of this study was to compare the accuracy of CBCT with intraoral digital and conventional radiography in the measurement of periodontal bone defects.  Methods and Materials: In this diagnostic research, two hundred and eighteen artificial osseous d...

Journal: :journal of dentistry, tehran university of medical sciences 0
roghieh bardal bardal hassan jahanihashemi maryam mostafavi esmaeil kalhor maryam tofangchiha mahdieh dehghani

objectives: the optimal goal of radiography is to provide high-quality diagnostic images with the least patient radiation dose. the aim of this study was to evaluate the accuracy of cone-beam computed tomography (cbct) and intraoral photostimulable phosphor plate (psp) digital and film-based conventional radiography for detection of artificial cancellous bone defects. materials and methods: fiv...

Journal: :مجله تحقیق در علوم دندانپزشکی و فک و دهان 0
احمدرضا طلاییپور ar talayi pour ialamic azad university teh iranدانشکده دندانپزشکی ازاد تهران لادن حافظی l hafezi ialamic azad university teh iranدانشکده دندانپزشکی ازاد تهران اعظم یاراحمدی a yarahmadi ialamic azad university teh iranدانشکده دندانپزشکی ازاد تهران ایسان غزنوی a ghaznavi oromeyeh university dental branchدانشکده دندانپزشکی ارومیه بخش رادیولوژی ایسل ایرانپور a iranpor ialamic azad university teh iranدانشکده دندانپزشکی ازاد تهراند لیلا سحابی l sahabi ialamic azad university teh iranدانشکده دندانپزشکی ازاد تهران

background and aim: clinical and radiographic diagnoses of dental root fractures have always been difficult and require high accuracy in dental care and treatment. the aim of this study was to compare the diagnostic accuracy of intraoral digital radiography (psp) and cbct in the detection of horizontal root fracture (hrf) and vertical root fracture (vrf). materials and methods: for this experim...

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 ...

2008
Petra Tenkanen-Rautakoski Hannu Järvinen Ritva Bly

The collective effective dose to the population from all x-ray examinations in Finland in 2005 was estimated. The numbers of x-ray examinations were collected by a questionnaire to the health care units (response rate 100 %). The effective doses in plain radiography were calculated using a Monte Carlo based program (PCXMC), as average values for selected health care units. For computed tomograp...

2014
Prashant P Jaju Sushma P Jaju

Panoramic radiography and computed tomography were the pillars of maxillofacial diagnosis. With the advent of cone-beam computed tomography, dental practice has seen a paradigm shift. This review article highlights the potential applications of cone-beam computed tomography in the fields of dental implantology and forensic dentistry, and its limitations in maxillofacial diagnosis.

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