نتایج جستجو برای: تکنیک cbct

تعداد نتایج: 31707  

مقدمه: توموگرافی کامپیوتری با اشعه مخروطی CBCT)) یک روش جدید تصویربرداری است که در آن از یک پرتو مخروطی شکل استفاده می شود. این تکنیک به طور گسترده ای در حیطه ی رادیولوژی دندانپزشکی مورد پذیرش قرار گرفته است. CBCT توسط بسیاری از دندانپزشکان به عنوان روش تصویربرداری منتخب در کنار سایر روش های متداول برای...

2017
Ankit Chanani Haridas Das Adhikari

Background Differential diagnosis of periapical cysts and granulomas is required as their treatment modalities are different. Aim The aim of this study was to evaluate the efficacy of cone beam computed tomography (CBCT) in the differential diagnosis of periapical cysts from granulomas. Settings and Design A single-centered observational study was carried out in the Department of Conservati...

2016
Anne Richter Bülent Polat Ingulf Lawrenz Stefan Weick Otto Sauer Michael Flentje Frederick Mantel

BACKGROUND Evaluation of set up error detection by a transperineal ultrasound in comparison with a cone beam CT (CBCT) based system in external beam radiation therapy (EBRT) of prostate cancer. METHODS Setup verification was performed with transperineal ultrasound (TPUS) and CBCT for 10 patients treated with EBRT for prostate cancer. In total, 150 ultrasound and CBCT scans were acquired in ra...

Journal: :Journal of endodontics 2016
Kreena Patel Francesco Mannocci Shanon Patel

INTRODUCTION This in vivo study assessed whether there was a difference between periapical radiographs (PRs) and cone-beam computed tomographic (CBCT) imaging in the detection, assessment, and management of external cervical resorption (ECR). The secondary aim was to determine if parallax radiographs were of any further benefit compared with a single PR. METHODS PR and CBCT data were gathered...

2013
Vania Tacher MingDe Lin Nikhil Bhagat Nadine Abi Jaoudeh Alessandro Radaelli Niels Noordhoek Bart Carelsen Bradford J. Wood Jean-François Geschwind

The advent of cone-beam computed tomography (CBCT) in the angiography suite has been revolutionary in interventional radiology. CBCT offers 3 dimensional (3D) diagnostic imaging in the interventional suite and can enhance minimally-invasive therapy beyond the limitations of 2D angiography alone. The role of CBCT has been recognized in transarterial chemo-embolization (TACE) treatment of hepatoc...

2017
Oh-Kyun Kwon Seung-Won Yang Jee-Hwan Kim

PURPOSE This study compared the SCGAs measured in three types of radiographic images (panoramic, CBCT panoramic-section, and CBCT cross-section images) with values measured using the protrusive occlusal record. MATERIALS AND METHODS SCGAs were measured in 20 patients on a semi-adjustable articulator using the protrusive interocclusal record. Panoramic and CBCT images were obtained. SCGAs were...

Journal: :Medical dosimetry : official journal of the American Association of Medical Dosimetrists 2006
Olivier Morin Amy Gillis Josephine Chen Michèle Aubin M Kara Bucci Mack Roach Jean Pouliot

In this article, we describe a clinical mega-voltage cone-beam computed tomography (MV CBCT) system, present the image acquisition and patient setup procedure, discuss the positioning accuracy and image quality, and illustrate its potential use for image-guided radiation therapy (IGRT) through selected clinical examples. The MV CBCT system consists of a standard linear accelerator equipped with...

Journal: :Pain physician 2010
Michael F Powell Diane DiNobile Arra S Reddy

BACKGROUND Isocentric C-arm fluoroscopic cone beam CT (CBCT) is a new technique for near real time 3-D volume imaging guidance of percutaneous interventional procedures. In combination with digital flat panel detectors, CBCT has high spatial resolution with isotropic voxel size, allowing for high resolution image reconstruction in any plane, including 3D rotational reconstructions. CBCT combine...

2005
S. A. Graham J. H. Siewerdsen D. J. Moseley H. Keller N. A. Shkumat D. A. Jaffray

Cone-beam computed tomography (CBCT) presents a highly promising and challenging advanced application of flatpanel detectors (FPDs). The great advantage of this adaptable technology is in the potential for sub-mm 3D spatial resolution in combination with soft-tissue detectability. While the former is achieved naturally by CBCT systems incorporating modern FPD designs (e.g., 200 – 400 um pixel p...

2014
Maria Eugenia Guerrero Jorge Noriega Reinhilde Jacobs

PURPOSE This study was performed to determine the efficacy of observers' prediction for the need of bone grafting and presence of perioperative complications on the basis of cone-beam computed tomography (CBCT) and panoramic radiographic (PAN) planning as compared to the surgical outcome. MATERIALS AND METHODS One hundred and eight partially edentulous patients with a need for implant rehabil...

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