Download or read book Accuracy of Cone beam Computerized Tomography CBCT for the Measurement of Linear Distances in the Mandible an Ex Vivo Study written by Michal Halperin and published by . This book was released on 2011 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Determination of the Accuracy of Cone Beam Computed Tomography and Digital Orthopantomography for the Determination of Bone Quantity in the Mandibular Ramus written by Robin Gallardi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Linear Accuracy and Reliability of Cone Beam CT Derived 2 dimensional Images and Conventional Lateral Cephalometric Images Using Photostimulable Storage Phosphors written by Mazyar Moshiri and published by . This book was released on 2008 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project was to compare the accuracy and precision of linear measurements made on conventional lateral cephalograms (LC) and simulated LC using cone-beam computed tomography (CBCT) to direct measurements on dentate skulls. The linear distances for 5 mid-sagittal and 4 bilateral measurements between anatomical landmarks on 22 skulls were measured by two observers. The skulls were imaged using a CBCT scanner at 4 scan settings: high resolution (0.2mm) and normal resolution (0.4mm) at 20-sec (306 projections) and 40-sec scans (612 projections). Three simulated LC were generated: Ray sum image reconstructions of the maximum thickness mid-sagittal multiplanar projections, a single frame basis projection, and the scout image. LCs were acquired using a storage phosphor system. Projection images were exported into a cephalometric analysis program and linear measurements determined. Analyses were repeated three times and statistically compared to measured anatomic truth using repeated measures general linear model (p [less than or equal to] 0.05). The mean absolute error was used as an index of precision. While there were statistical differences between skull and modality measurements for 6 of the nine measurements, there were no overall differences between LC and CBCT derived image measurements irrespective of method of construction. CBCT imaging provides clinically reliable 2D simulation images however, dose considerations demand that evidence-based selection criteria should be developed for CBCT in orthodontics that take into account the ALARA principle.

Download or read book Accuracy of Linear Measurement in Galileos Cone Beam CT Under Simulated Clinical Condition written by Rumpa Ganguly and published by . This book was released on 2009 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Accuracy of Linear Measures from Conventional Digital and Cone Beam Computed Tomography Simulated Posterior Anterior Cephalograms written by Brian M. Mannari and published by . This book was released on 2007 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project was to compare the accuracy and reliability of linear measurements on posterior-anterior (PA) cephalograms made conventionally using photostimulable storage phosphor imaging plates (PSP) and simulated PA cephalometric images from ray sum reconstruction of cone beam computed tomographic (CBCT) volumetric datasets of the same anatomic specimens. The sample consisted of 19 dried dentate human skulls which were imaged using PA cephalometry using PSP imaging plates and three CBCT datasets at 10 s., 20 s. and 40 s. scanning times from which ray sum simulated PA images were produced. Various anatomic landmarks were identified and truth measurements of 13 selected cephalometric linear dimensions were measured directly on the skulls using a high precision caliper. CBCT datasets were imported into a reconstruction program (Dolphin 3D Software) from which ray sum PA images were constructed. Linear cephalometric measurements on PSP and CBCT simulated PA images were performed by one observer using Dolphin Imaging Software. Intraobserver reliability was determined by calculating and comparing Intraclass correlation coefficient. Mean absolute and percentage errors were calculated for each dimension and modality to quantify the reliability error. Mean modality measurements were compared. All other groups were compared using one-way ANOVA with Tukey post hoc comparisons (p [less than or equal to] 0.05). While the ICC was high, PSP cephalometric absolute error was greater than anatomic distances and CBCT image measurements for 8 for 13 measurements. We found that for most measurements, simulated PA images produced from reconstructed CBCT volumetric dataset were accurate and compared well to PSP cephalometric images except for Z-Ag. We also found that PSP cephalometric images consistently underestimated MO-MO dimensions. Measurements on CBCT simulated PA images are more reliabile and as accuracte as PSP cephalometric measurements. The number of projections comprising the reconstructed simulated PA image did not influence reliability or accuracy. Therefore in accordance with ALARA, when CBCT imaging is used to generate simulated PA images, the lowest number of projections are recommended.

Download or read book Comparative Linear Accuracy and Reliability of Cone Beam CT Derived 2 dimensional and 3 dimensional Images Constructed Using an Orthodontic Volumetric Rendering Program written by Danielle R. Periago and published by . This book was released on 2007 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project was to compare the accuracy and reliability of linear measurements made on 2D projections and 3D reconstructions using Dolphin 3D software (Chatsworth, CA) as compared to direct measurements made on human skulls. The linear dimensions between 6 bilateral and 8 mid-sagittal anatomical landmarks on 23 dentate dry human skulls were measured three times by multiple observers using a digital caliper to provide twenty orthodontic linear measurements. The skulls were stabilized and imaged via PSP digital cephalometry as well as CBCT. The PSP cephalograms were imported into Dolphin (Chatsworth, CA, USA) and the 3D volumetric data set was imported into Dolphin 3D (Version 2.3, Chatsworth, CA, USA).Using Dolphin 3D, planar cephalograms as well as 3D volumetric surface reconstructions were (3D CBCT) generated. The linear measurements between landmarks of each three modalities were then computed by a single observer three times. For 2D measurements, a one way ANOVA for each measurement dimension was calculated as well as a post hoc Scheffe multiple comparison test with the anatomic distance as the control group. 3D measurements were compared to anatomic truth using Student's t test (P [less than or equal to] 50.05). The intraclass correlation coefficient (ICC) and absolute linear and percentage error were determined as indices of intraobserver reliability. Our results show that for 2D mid sagittal measurements that Simulated LC images are accurate and similar to those from PSP images (except for Ba-Na), and for bilateral measurements simulated LC measurements were similar to PSP but less accurate, underestimating dimensions by between 4.7% to 17%.For 3D volumetric renderings, 2/3 rd of CBCT measurements are statistically different from actual measurements, however this possibly is not clinically relevant.

Download or read book Comparative Linear Accuracy of Cone Beam CT Derived 3D Images in Orthodontic Analysis written by April A. Brown and published by . This book was released on 2008 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective. To compare the in vitro reliability and accuracy of linear measurements between cephalometric landmarks on CBCT 3D images with varying basis projection images to direct measurements on human skulls. Methods. Sixteen linear dimensions between anatomical sites marked on 19 human skulls were directly measured. Skulls were imaged with CBCT at three settings: 153, 306, and 612 basis projections. The mean absolute error and modality mean of linear measurements between landmarks on 3D images were compared to the anatomic truth. Results. No difference in mean absolute error between the scan settings was found. The average skull absolute error between marked reference points were less than the distances between unmarked reference sites. Conclusion. CBCT measurements were consistent between scan sequences and for direct measurements between marked reference points. Reducing the number of projections for 3D reconstruction did not lead to reduced dimensional accuracy and potentially provides reduced patient radiation exposure.

Download or read book Interpretation Basics of Cone Beam Computed Tomography written by Shawneen M. Gonzalez and published by John Wiley & Sons. This book was released on 2021-11-09 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interpretation Basics of Cone Beam Computed Tomography, Second Edition is a practical identification guide for interpreting CBCT findings in dental practice. Offering multiple high-quality images for each example provided, this easy-to-use guide is designed for those new to CBCT scans as well as more experienced practitioners in need of a reference tool of normal anatomy, common anatomical variants, and incidental findings. Extensively revised throughout, the Second Edition features a brand-new chapter on findings of the maxilla and mandible, and additional incidental findings and common anatomical variants. Every chapter in the book now includes sections covering anatomic variations, developmental anomalies, pathosis, and other considerations. All information has been carefully reviewed and updated to incorporate recent research in the field and reflect newer guidelines from various specialty organizations. This new edition: Enables rapid reference to common CBCT findings, with multiple images for each finding Features a streamlined framework that makes relevant information easier to find and apply in dental practice Offers hundreds of new images to aid in correctly identifying findings Contains new and updated content, including expanded coverage of CBCT and implants Provides sample reports and explains how they are used in day-to-day clinical practice Interpretation Basics of Cone Beam Computed Tomography, Second Edition remains a must-have resource for all dental practitioner and specialists who use CBCT, dental students in radiology interpretation courses, and residents beginning to use CBCT in their specialty.

Download or read book Cone Beam Computed Tomography in Endodontics written by Shanon Patel and published by Quintessenz Verlag. This book was released on 2019-09-16 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, cone beam computed tomography (CBCT) has become much more widely available and utilised in all aspects of dentistry, including endodontics. Cone Beam Computed Tomography in Endodontics is designed to inform readers about the appropriate use of CBCT in endodontics, and enhance their clinical practice with this exciting imaging modality.

Download or read book Accuracy of Linear TMJ Measurements with Cone Beam Computed Tomography and Digital Cephalometric Radiography written by Michael Jay Hilgers and published by . This book was released on 2005 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purposes of this study were to: (1) determine whether dento-maxillofacial (DMF) cone beam computed tomography (CBCT) produces accurate MPR images of a temporomandibular joint (TMJ) articulation; (2) compare the accuracy of DMF CBCT with traditional digital extraoral radiography; and (3) compare the reproducibility of measurements made of the TMJ using DMF CBCT with traditional digital extraoral radiography. Ten linear measurements of the TMJ and associated structures were compared using 25 dried skull specimens for DMF CBCT as well as cephalometric projections. Means and standard deviations were compared using ANOVA and post-hoc tests (Dunette's Test) at a significance level of p [less than or equal to] .05. The results show DMF CBCT is significantly more accurate than traditional extraoral radiography for all 10 measurements made of the TMJ and associated structures. Although the measurements were less reproducible for the modalities tested than for the measurements made directly on the skulls, all were within clinically acceptable limits.

Download or read book Sensitivity and Accuracy of Cone Beam Computed Tomography in Diagnosing Osseous Defects at the Mandibular Condyle written by Alpesh Patel and published by . This book was released on 2013 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Objectives: To assess the ability of using cone-beam computed tomography (CBCT) to diagnose small osseous defects at the mandibular condyle, this study investigated: 1) the impact of defect size and CBCT scan resolutions on the accuracy of qualitative and quantitative diagnoses of condylar defects and, 2) the ability to determine a suspected defect to be true/false based on CBCT measurements. Methods: Cylindrical holes simulating condylar defects of varied levels of diameter (=2mm; 2-3mm; >3mm) and depth (=2mm; >2mm) were created at 22 fresh pig mandibular condyles, with defect number/size per condyle/quadrant randomly determined. With soft tissues repositioned, CBCT scans (0.4mm, 0.2mm voxel-size) of the pig heads were obtained. Reconstructed CBCT data were analyzed independently by two calibrated, blinded raters using Dolphin-3D to diagnose osseous defects qualitatively (defect identification/localization) and quantitatively (geometric measurements of diameter/depth), which were compared to physical diagnoses obtained from polyvinyl siloxane impressions. Statistical tests were conducted for the research objectives. Results: Overall, qualitative defect identification/localization demonstrated moderate inter-rater reliability, excellent specificity and sensitivity, except for extremely small defects (both diameter and depth

Download or read book Cone Beam Computed Tomography written by David Sarment and published by John Wiley & Sons. This book was released on 2013-10-18 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for the clinician, Cone Beam Computed Tomography helps the reader understand how CBCT machines operate, perform advanced diagnosis using CT data, have a working knowledge of CBCT-related treatment planning for specific clinical tasks, and integrate these new technologies in daily practice. This comprehensive text lays the foundation of CBCT technologies, explains how to interpret the data, recognize main pathologies, and utilize CBCT for diagnosis, treatment planning, and execution. Dr. Sarment first addresses technology and principles, radiobiologic risks, and CBCT for head and neck anatomy. The bulk of the text discusses diagnosis of pathologies and uses of CBCT technology in maxillofacial surgical planning, orthodontic and orthognathic planning, implant surgical site preparation, CAD/CAM surgical guidance, surgical navigation, endodontics airway measurements, and periodontal disease.

Download or read book Interpretation Basics of Cone Beam Computed Tomography written by Shawneen M. Gonzalez and published by John Wiley & Sons. This book was released on 2013-10-18 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interpretation Basics of Cone Beam Computed Tomography is an easy-to-use guide to Cone Beam CT technology for general dental practitioners and dental students. It covers normal anatomy, common anatomical variants, and incidental findings that practitioners must be familiar with when interpreting CBCT scans. In addition to functioning as an identification guide, the book presents and discusses sample reports illustrating how to use this information in day-to-day clinical practice. Organized by anatomical regions, the book is easy to navigate and features multiple images of examples discussed. It also includes a valuable section on legal issues surrounding this new technology, essential for informed and appropriate use.

Download or read book Cone Beam Computed Tomography From Capture to Reporting An Issue of Dental Clinics of North America written by Dale A. Miles and published by Elsevier Health Sciences. This book was released on 2014-07-28 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue of Dental Clinics updates topics in CBCT and Dental Imaging. Articles will cover: basic principles of CBCT; artifacts interfering with interpretation of CBCT; basic anatomy in the three anatomic planes of section; endodontic applications of CBCT; pre-surgical implant site assessment; software tools for surgical guide construction; CBCT for the nasal cavity and paranasal sinuses; CBCT and OSA and sleep disordered breathing; update on CBCT and orthodontic analyses; liabilities and risks of using CBCT; reporting findings in a CBCT volume, and more!

Download or read book Accuracy of Cone beam Computerized Tomography in Determining the Thickness of the Palatal Masticatory Mucosa written by Justin Mitchell Hardison and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: BACKGROUND: The aim was to compare the thickness of the palatal masticatory mucosa as determined on a cone-beam computerized (CBCT) scan versus thickness determined via bone-sounding. METHODS: A total of twenty patients requiring palatal surgery participated. Thickness of the palatal tissue was measured at various points radiographically and clinically. The two techniques were compared to determine the agreement of the two measurement modalities. RESULTS: Analysis of variance determined that there was no significant difference between the two methods. A small bias of the radiographic measurement being larger was found to be statistically significant (0.09 [plus or minus] 0.69mm; p

Download or read book CONE BEAM COMPUTED TOMOGRAPHY IN ORTHODONTICS written by Dr. SHREYA SHARMA and published by Book Rivers. This book was released on 2022-02-07 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cone Beam Computed Tomography in Orthodontics written by Sunil D. Kapila and published by John Wiley & Sons. This book was released on 2014-08-29 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its introduction to dentistry, cone beam computed tomography (CBCT) has undergone a rapid evolution and considerable integration into orthodontics. However, despite the increasing popularity of CBCT and progress in applying it to clinical orthodontics, the profession has lacked a cohesive, comprehensive and objective reference that provides clinicians with the background needed to utilize this technology optimally for treating their patients. Cone Beam Computed Tomography in Orthodontics provides timely, impartial, and state-of-the-art information on the indications and protocols for CBCT imaging in orthodontics, clinical insights gained from these images, and innovations driven by these insights. As such, it is the most current and authoritative textbook on CBCT in orthodontics. Cone Beam Computed Tomography in Orthodontics is organized to progress sequentially through specific topics so as to build the knowledgebase logically in this important and rapidly evolving field. Part I provides the foundational information on CBCT technology, including radiation exposure and risks, and future evolutions in computed tomography. Part II presents the Principles and Protocols for CBCT Imaging in Orthodontics, focusing on developing evidence-based criteria for CBCT imaging, the medico-legal implications of CBCT to the professional and the protocols and integration of this technology in orthodontic practice. Part III provides critical information on CBCT-based Diagnosis and Treatment Planning that includes how to interpret CBCT scans, identify incidental pathologies and the possible other uses of this technology. Part IV covers practical aspects of CBCT’s Clinical Applications and Treatment Outcomes that encompasses a range of topics, including root morphology and position, treatment of impacted teeth, virtual surgical treatment planning and outcomes, and more.