Cone-beam computed tomography (CBCT) is an advanced imaging modality that has high clinical applications in the field of dentistry. CBCT proved to be a successful investigative modality that has been used for dental and maxillofacial imaging. Radiation exposure dose from CBCT is 10 times less than from conventional CT scans during maxillofacial exposure. Furthermore, CBCT is highly accurate and...

statement of the problem: most of the soft tissue calcifications within the head and neck region might not be accompanied by clinical symptoms but may indicate some pathological conditions. purpose: the aim of this research was to determine the prevalence of soft tissue calcifications in cone beam computed tomography (cbct) images of mandibular region. materials and method: in this cross sectio...

Three dimensional computed tomography is a computationally intensive procedure, requiring large amounts of R A M and processing power. Parallel methods for two dimensional computed tomography have been studied, but not edended or applied to 3D cone beam tomography. A discussion on how the 3D cone beam tomography problem can be implemented in parallel using MPI is given. W e show an improvement ...

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The use of cone beam computed tomography (CBCT) is growing in the clinical arena due to its ability to provide 3D information during interventions, its high diagnostic quality (sub-millimeter resolution), and its short scanning times (60 s). In many situations, the short scanning time of CBCT is followed by a time-consuming 3D reconstruction. The standard reconstruction algorithm for CBCT data ...

Conventional (both chemical and digital) radiography renders a three-dimensional (3-D) anatomical structure two dimensionally with inherit distortions. This limitation posts a steep learning curve for novice operators to interpret information from the resulting images. In many incidences, it becomes a matter of guesswork even to the experienced user, like the relationship of the maxillary molar...

PURPOSE This study was performed to investigate the influence of object shape and distance from the center of the image on the volumetric accuracy of cone-beam computed tomography (CBCT) scans, according to different parameters of tube voltage and current. MATERIALS AND METHODS Four geometric objects (cylinder, cube, pyramid, and hexagon) with predefined dimensions were fabricated. The object...

At the end of the millennium, cone-beam computed tomography (CBCT) heralded a new dental technology for the next century. Owing to the dramatic and positive impact of CBCT on implant dentistry and orthognathic/orthodontic patient care, additional applications for this technology soon evolved. New software programs were developed to improve the applicability of, and access to, CBCT for dental pa...

A comparison of image quality and dose delivered between two differing computed tomography (CT) imaging modalities-fan beam and cone beam-was performed. A literature review of quantitative analyses for various image quality aspects such as uniformity, signal-to-noise ratio, artifact presence, spatial resolution, modulation transfer function (MTF), and low contrast resolution was generated. With...

background: cross- sectional tomograms have been used for optimal pre-operative planning of dental implant placement. the aim of the present study was to assess the accuracy of cone beam computed tomography (cbct) measurements of specifi c distances around the mandibular canal by comparing them to those obtained from multi-slice computed tomography (msct) images. materials and methods: ten hemi...