نتایج جستجو برای: dental ct

تعداد نتایج: 292390  

2015
Laurence R Gaalaas Donald Tyndall André Mol Eric Everett

Proximal dental caries remains a prevalent disease with only modest detection rates by current diagnostic systems. X-ray radiography represents the most common and successful means of diagnosing early dental caries lesions, however; many new systems are available without controlled validation of diagnostic efficacy. This study evaluated the caries detection of three new dental radiographic imag...

2017
Anuraag B Choudhary

Introduction DVT or Cone beam Computed Tomography (CBCT) is an advancement in Computed Tomography imaging that has begun to emerge as a potentially low-dose cross-sectional technique for visualizing bony structures in the head and neck. CBCT was first adapted for potential clinical use in 1982 at the Mayo Clinic Biodynamics, Research Laboratory. Exploration of CBCT technologies for use in radia...

2015
Andrei Iagaru Ryogo Minamimoto Craig Levin Amid Barkhodari Mehran Jamali Dawn Holley Zaharchuk Greg

Methods and materials All patients underwent a single-injection of FDG, followed first by PET-CT and subsequently by PET-MRI scan. The PET/CT exams were performed using a GE Discovery 690 PET/CT scanner. The PET/MRI images were acquired on a GE Signa PET/MRI scanner. All PET images were reconstructed with and without the TOF data. Visual analysis of these series was performed for dental metal /...

2016
Dmitriy V. Ivanov Aleksandr V. Dol Dmitriy A. Smirnov

Aim ― Modern dentistry cannot exist without dental implantation. The lifetime of the installed implants depends on condition of the bone and on the quality of the treatment planning and surgery technique. Usually, complications during the implant treatment are related to the inability to accurately predict the condition and location of intraosseous structure that entails the selection of the wr...

ژورنال: مجله دندانپزشکی 2001
کاویانی, فرزانه ,

Concern for adverse effects must accompany any use of ionizing radiation. Such concern for the expanded use of CT scanning, conventional tomography and panoramic in dental implant radiology can be expressed by the establishment of absorbed radiation dose for critical tissues (resulting from these radiographic procedures). Potential patient benefit should be weighted against the risk and other d...

Journal: :Annali dell'Istituto superiore di sanita 2012
Bence Tamas Szabo Levente Pataky Regina Mikusi Pal Fejerdy Csaba Dobo-Nagy

The aim of this study was to compare three different cone-beam CT (CBCT) instruments used in dental clinical practice with micro-CT as gold standard. Three female monkeys' (Macaca fascicularis) skulls were selected and scanned by the tested CBCT-s. The most apical visible root canal level on the CBCT images was used as reference level (RL). After the image acquisition by CBCT-s dental jaw secti...

Introduction: Nowadays the use of cone beam computed tomography in dental imaging is increasing, although this method has a much lower dose than conventional CT scans, it delivers a higher dose than the panoramic and periapical patients therefore, , the aim of this study was to investigate the factors affecting the patients' dose in dental CBCTs and methods of optimizing and reducing the patien...

2013
Andras Anderla Dubravko Culibrk Gaspar Delso Milan Mirkovic

For decades, computed tomography (CT) images have been widely used to discover valuable anatomical information. Metallic implants such as dental fillings cause severe streaking artifacts which significantly degrade the quality of CT images. In this paper, we propose a new method for metal-artifact reduction using complementary magnetic resonance (MR) images. The method exploits the possibilitie...

Journal: :Japanese Journal of Oral and Maxillofacial Surgery 2016

Ahdiyeh Aghaz Bahador Bahadorzadeh, Hossein Ghadiri, Mohammad Reza Deevband Mohammad Reza Kardan Yaser Kasesaz,

Introduction: Cone-beam CT (CBCT) is an imaging system which offers three-dimensional (3D), multiplanar images and has many advantages over computed tomography (CT) including shorter acquisition times for the resolution desired in dentistry, lower radiation dose to the patient, reasonable price and higher spatial resolution but CBCT scanners are unable to display actual Hounsf...

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