نتایج جستجو برای: panoramic
تعداد نتایج: 5155 فیلتر نتایج به سال:
Background and Aim: To compare the radiographic distance from the inferior part of mandibular second and third molars to the superior border of mandibular canal on radiographs obtained by conventional periapical radiographs, intraoral photostimulable phosphor plate (Intraoral PSP) and panoramic photostimulable phosphor plate (Panoramic PSP). Subjects and Methods: The study was carried out on 25...
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...
introduction: mandibular fracture is the most common facial bone fracture due to facial trauma. a variety of imagings have been used for diagnosis of mandibular fractures. however, the choice of imaging for diagnosis of mandibular fractures is controversial.present study compares the accuracy of the three most common imaging methods in mandibular fracture diagnosis panoramic radiography, corona...
conclusions the relationship between cac found on dental panoramic radiographs and two cva risk factors--hypertension and mi-- was significant. therefore, it seems that detection of cac on panoramic images of dental patients must be considered by dentists. results among 200 studied samples, 22 of the patients (11%) had carotid artery calcification on the dental panoramic radiograph. in total, 5...
The objective of this study was to develop a new practical method to reconstruct a high-quality panoramic image in which radiographers would be free from the onerous task of correctly locating the patient's jaws within the image layer of the panoramic unit. In addition, dentists would be able to freely select any panoramic plane to be reconstructed after the acquisition of the raw scan data. A ...
Introduction The present work describes a study in which, based on patient dose measurements, thermoluminescent dosimeters were used to obtain the diagnostic reference level arising from panoramic radiography. Materials and Methods Ten panoramic units and a sample of 15 patients per X-ray unit were studied. Two thermoluminescent dosimeter chips were placed on the skin surface of selected organs...
OBJECTIVE To determine the prevalence of carotid artery calcification as detected on panoramic radiographs in a Saudi population. METHODS This cross sectional study was conducted at the College of Dentistry, King Saud University, Saudi Arabia between March 2008 and January 2009. Five hundred and fifty-five panoramic radiographs of Saudi patients aged 30 years and above was collected from th...
In this paper we describe the application of a predictive Kalman filter to the display of panoramic images. We discuss integrating a panoramic imaging system with prediction of viewing direction to create an effective telepresence system over low bandwidth links. Panoramic imaging using a reflective mirror surface offers an alternative to pan-tilt systems for obtaining a 360 degree field of vie...
This paper proposes polycentric panoramas as a general model of panoramic images. The model formalizes essential characteristics of panoramic geometry. It is able to describe a wide range of panoramic images, including those potentially of future interest, or previously introduced such as single-center, multi-perspective, or concentric panoramas [1, 5, 13, 16]. This paper presents geometrical f...
This work aimed to evaluate the occurrence of suggestive images of styloid process elongation in panoramic radiographs, noting their frequency according to sex, age, and location, as well as measure and classify the types and patterns of calcification of elongated styloid processes. 2,500 panoramic radiographs were evaluated in a Radiology Clinic in Recife, PE, Brazil, performed between 2008 an...
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