نتایج جستجو برای: beam computed tomography cbct

تعداد نتایج: 367528  

آریامنش, حافظ, خالصی, میثم, فردمال, جواد, فلاحی, سامان, فیروز, فرناز, موسوی, سحر, حیدری, بیژن ,

Introduction & Objective: Study of bone quality before treatment is very important. The aims of this study were to assess bone quality with density values obtained by cone-beam computed tomography (CBCT) and to determine the correlations between bone density and primary stability of dental implants. Materials & Methods: In this experimental in vitro study 32 implants were inserted into fresh ...

Journal: :European journal of radiology 2008
Rudolf Boeddinghaus Andy Whyte

A review of state-of-the-art maxillofacial imaging is presented. Current imaging techniques include intra-oral radiographs, dental panoramic tomography, multidetector helical computed tomography, cone-beam computed tomography (CBCT) and magnetic resonance imaging (MRI). The commonest conditions encountered in clinical radiological practice are reviewed, including maxillofacial deformities, comp...

2013
Prashant P. Jaju Mayuri Jain Ajita Singh Akanksha Gupta Rishi Raj

Cone beam computed tomography (CBCT) is the modern third dimension applied in the field of oral maxillofacial region. With lower radiation dose compared to conventional CT, its applications in dentistry has increased tremendously. Artefacts can seriously degrade the quality of computed tomographic (CBCT) images, sometimes to the point of making them diagnostically unusable. To optimize image qu...

Journal: :International endodontic journal 2014
Y-H Liang L Jiang X-J Gao H Shemesh P R Wesselink M-K Wu

AIM To test the ability of periapical radiography (PA) and cone-beam computed tomography (CBCT) to determine the presence/absence of periapical lesions and examine the reliability of volumetric measurements of periapical lesions on CBCT scans. METHODOLOGY After tooth extractions in human mandibles, bone defects were cut at the base of extraction sockets to mimic periapical bone lesions. The t...

2015
George Puthenpurayil John Tatu Elenjickal Joy Justin Mathew Vinod R. B. Kumar

Cone beam computed tomography (CBCT, also referred to as C-arm computed tomography [CT], cone beam volume CT, or flat panel CT) is a medical imaging technique of X-ray CT where the X-rays are divergent, forming a cone.[1] CBCT systems have been designed for imaging hard tissues of the maxillofacial region. CBCT is capable of providing sub-millimeter resolution in images of high diagnostic quali...

Journal: :Dental clinics of North America 2014
Kenneth Abramovitch Dwight D Rice

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...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2010
Yehya A Mostafa Amr Ragab El-Beialy Gihan A Omar Mona Salah Fayed

Cone-beam computed tomography (CBCT) has become popular, and its many inherent advantages are indisputable. Nevertheless, CBCT is prescribed cautiously because the radiation dosage is higher than that of conventional radiography. When and to what extent should CBCT be prescribed for orthodontic patients? The purpose of this article is to present 4 curious cases in which a considerable discrepan...

ژورنال: :مجله دانشگاه علوم پزشکی همدان 0
بیژن حیدری bijan heidari سامان فلاحی saman fallahi فرناز فیروز farnaz firouz جواد فردمال javad faradmal سحر موسوی sahar mosavi میثم خالصی meysam khalesi حافظ آریامنش

مقدمه و هدف: بررسی کیفیت استخوان قبل از درمان کاری است حیاتی لذا هدف از این مطالعه ارزیابی کیفیت استخوان با میزان دانسیته حاصل از توموگرافی کامپیوتری با اشعه مخروطی (cone-beam computed tomography cbct) و تعیین رابطه بین دانسیته استخوان و ثبات اولیه ایمپلنت های دندانی می باشد. روش کار: در این مطالعه تجربی آزمایشگاهی 32 ایمپلنت در استخوان تازه گوسفند قرار داده شد. دانسیته استخوانی محل های دریافت ...

Journal: :iranian journal of radiology 0
solmaz valizadeh department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran; dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran hamidreza pouraliakbar dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran leila kiani rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran yaser safi department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran leila alibakhshi department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran; department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. tel: +98-2122907040, fax: +98-2188804037

conclusions ultrasound is recommended as the first choice when fb is located within the superficial soft tissues with no bone around it. in case of penetration of fb into deeper tissues or beneath bone, ct or cbct are recommended. otherwise, considering lower dose, cbct is preferred over ct. we can use mri if the fb is not ferromagnetic. however, ct is the first choice in emergency situations b...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید