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Dento Maxillo Facial Radiology

Michael Dau, Amir Edalatpour, Ralf Schulze, Bilal Al-Nawas, Abdulmonem Alshihri, Peer W Kämmerer
OBJECTIVES: The aim of this study was to compare the subjective quality rating of panoramic radiography (PAN) and cone beam computed tomography (CBCT) in planning of dental implant procedures by clinicians with different educational background. METHODS: Radiographic images (PAN and CBCT) of 42 patients were examined as follows: 10 maxillary (MX) anterior region, 16 MX posterior region and 16 mandibular (MD) posterior region. These sites were used for planning of dental implant insertion...
October 19, 2016: Dento Maxillo Facial Radiology
Marcin Fraczek, Maciej Guzinski, Monika Morawska-Kochman, Kamil H Nelke, Tomasz Krecicki
OBJECTIVES: The growing awareness of increased X-ray exposure to the public has led to the propagation of several methods for reducing the radiation dose during CT examination. Low-dose CT protocols do not, however, have an established role in pre-operative evaluation. The aim of this article was to assess the usefulness of nasal endoscopy in the selection of patients under pre-operative care for low-dose CT examination. METHODS: A cadaver head was used to discover institutional minimum acceptable CT image quality and scanning settings...
October 17, 2016: Dento Maxillo Facial Radiology
Heraldo L D da Silveira, Mathias P Fontana, Heloísa E D da Silveira
No abstract text is available yet for this article.
October 12, 2016: Dento Maxillo Facial Radiology
Daniel Fouladi, Hediyeh Mahmoudian, Masoumeh Johari
No abstract text is available yet for this article.
October 12, 2016: Dento Maxillo Facial Radiology
Nobuo Kashiwagi, Takamichi Murakami, Masafumi Toguchi, Katsuyuki Nakanishi, Shojiro Hidaka, Hideyuki Fukui, Masatomo Kimura, Mutsukazu Kitano, Noriyuki Tomiyama
OBJECTIVES: To present and characterize CT and MR imaging findings of metastases to the parotid nodes. METHODS: CT (n = 10) and MR (n = 11) images from 14 patients with metastases to the parotid nodes were reviewed. The primary tumour sites were the ocular adnexa in five patients, facial skin in four patients, upper aerodigestive tract in four patients and thyroid gland in one patient. CT and MR images were evaluated with emphasis on the size and number of parotid tumours, their location in the parotid gland, the presence of associated clinically pathological cervical nodes or previous history of cervical node metastasis, margin characteristics and the presence of central necrosis...
October 11, 2016: Dento Maxillo Facial Radiology
Felix P Kuhn, Georg Spinner, Filippo Del Grande, Michael Wyss, Marco Piccirelli, Stefan Erni, Pascal Pfister, Michael Ho, Bert-Ram Sah, Lukas Filli, Dominik A Ettlin, Luigi M Gallo, Gustav Andreisek, Andrei Manoliu
OBJECTIVES: To qualitatively and quantitatively compare MR imaging of the temporomandibular joint (TMJ) at 7.0 T using high-permittivity dielectric pads and 3.0 T using a clinical high-resolution protocol. METHODS: IRB approved study with written informed consent. 12 asymptomatic volunteers were imaged at 7.0T and 3.0T using 32-channel head coils. High-permittivity dielectric pads consisting of barium titanate in deuterated suspension were used for imaging at 7...
October 5, 2016: Dento Maxillo Facial Radiology
Ivna A Lopes, Rosana M A Tucunduva, Roberta H Handem, Ana Lucia A Capelozza
OBJECTIVES: The aim of this study was to identify the type and frequency of incidental findings (IFs) in the maxillofacial region of CBCT scans with different sizes of field of view (FOV), and the clinical relevance of the findings was classified as requirement or not of monitoring, treatment or referral to a specialist. METHODS: We analyzed 150 CBCT examinations, divided according to the size of the FOV into 3 groups: 6-cm maxilla, 6-cm mandible and 13-cm maxilla/mandible...
October 5, 2016: Dento Maxillo Facial Radiology
Louise Hauge Matzen, Lars Schropp, Rubens Spin-Neto, Ann Wenzel
OBJECTIVES: To 1)compare pathological findings related to the mandibular third molar in panoramic images (PAN) and CBCT; 2)estimate the frequency of removals if pathological findings were indicative; and 3)assess factors in PAN associated with resorption and marginal bone loss at the second molar as observed in CBCT. METHODS: 379 mandibular third molars were examined with PAN and CBCT. Four observers registered resorption and marginal bone loss at the second molar and increased periodontal space at the third molar in both imaging modalities...
September 28, 2016: Dento Maxillo Facial Radiology
Hélios Bertin, Raphael Bonnet, Anne-Sophie Delemazure, Emmanuelle Mourrain-Langlois, Jacques Mercier, Pierre Corre
OBJECTIVE: Non-tumor salivary diseases are common. Imaging studies are essential for their diagnosis and before undergoing an endoscopic or surgical treatment. In this study we aimed at presenting our procedure and results obtained with three dimensional cone-beam CT (3D-CBCT) sialography for non-tumor salivary gland diseases. METHODS: Patients with parotid or submandibular salivary symptoms were examined by 3D-CBCT sialography. They received an intraductal injection of 0...
September 2, 2016: Dento Maxillo Facial Radiology
Jean-Philippe Dillenseger, Catherine-Isabelle Gros, Amira Sayeh, Johary Rasamimanana, Fabrice Lawniczak, Jean-Marie Leminor, Jean-François Matern, André Constantinesco, Fabien Bornert, Philippe Choquet
OBJECTIVES: Quantitative and qualitative image quality evaluation of two different dental CBCT scanners. METHODS: 2 CBCT systems were evaluated in this study: - one small field of view (FOV) (50mm diameter) system that also allows 2D dental panoramic imaging; - and one large FOV CBCT system (50-180mm diameter). These devices were all tested with installed acquisition default modes and proprietary reconstruction software, enabling high-resolution bone imaging. Quantitative analyses were carried out to measure spatial resolution, linearity and homogeneity...
August 31, 2016: Dento Maxillo Facial Radiology
Monika Litko, Jacek Szkutnik, Marcin Berger, Ingrid Różyło-Kalinowska
OBJECTIVES: The aim of this study was to investigate the correlation between the lateral pterygoid muscle (LPM) attachment type and temporomandibular joint (TMJ) disc position on sagittal and coronal MR scans. METHODS: 191 patients (148 females, 43 males), aged 14-60 years, underwent MR investigations of the TMJs in the intercuspal position (IP) and open-mouth position (OMP). The disc position was evaluated on oblique sagittal and coronal images in the IP and OMP on many MRI sections showing all portions of the joint...
August 30, 2016: Dento Maxillo Facial Radiology
Andrea I Schmid, Michael Uder, Michael M Lell
OBJECTIVES: Aim of this study was to evaluate image quality and radiation dose in low dose head neck computed tomography (CT) comparing two different commercially available iterative reconstruction algorithms SAFIRE and ADMIRE with fixed and automated tube voltage adaptation (TVA). METHODS: CT examinations of 103 patients were analysed. 58 patients were examined on a single-source CT at fixed tube voltage of 120 kV and reconstructed with FBP and sinogram affirmed iterative reconstruction (SAFIRE, strength level 3)...
August 19, 2016: Dento Maxillo Facial Radiology
Adam A Dmytriw, Jin Soo A Song, Sarah Power, Guillaume Saliou, Karel terBrugge
A 32 year-old male presented with a pulsatile facial mass with palpable thrill and audible bruit. Imaging revealed a very large diffuse left sided facial arteriovenous malformation with extensive bilateral supply as well as a previously ligated left external carotid artery. Endovascular treatment was required to control associated hemorrhagic events as well as for palliation and was delivered via the contralateral and ipsilateral collateral supply because of ligation of the direct route to the nidus. In addition the patient received intravenous bevacizumab and intra-arterial bleomycin therapy...
August 19, 2016: Dento Maxillo Facial Radiology
Shumei Murakami, Rinus G Verdonschot, Miyoshi Kataoka, Naoya Kakimoto, Hiroaki Shimamoto, Sven Kreiborg
OBJECTIVES: Metallic compounds present in the oral and maxillofacial regions (OMRs) cause large artefacts during MR scanning. We quantitatively assessed these artefacts embedded within a phantom according to standards set by the American Society for Testing and Materials (ASTM). METHODS: Seven metallic dental materials (each of which was a 10-mm(3) cube embedded within a phantom) were scanned [i.e. aluminium (Al), silver alloy (Ag), type IV gold alloy (Au), gold-palladium-silver alloy (Au-Pd-Ag), titanium (Ti), nickel-chromium alloy (NC) and cobalt-chromium alloy (CC)] and compared with a reference image...
August 19, 2016: Dento Maxillo Facial Radiology
Abdullah Ebrahim Laher, Mike Wells
OBJECTIVES: This ultrasound based cross sectional study aimed to visualise, locate as well as compare the position of the mental foramen with regard to its relationship to various soft tissue landmarks. METHODS: One hundred Black and Caucasian subjects were included. An ultrasound transducer was used to locate the mental foramina. Distances to various landmarks were measured and compared. RESULTS: All mental foramina were visualised. The mean soft tissue distance of the entire group from the mental foramen on the right and left sides respectively were as follows: a) 3...
August 10, 2016: Dento Maxillo Facial Radiology
Shinya Kotaki, Junichiro Sakamoto, Kornkamol Kretapirom, Ngamsom Supak, Yasunori Sumi, Tohru Kurabayashi
OBJECTIVES: Diffusion tensor imaging (DTI) can provide structural information and objective values for nerves. The aims of this study were to perform quantitative evaluation and fibre tracking of the normal inferior alveolar nerve (IAN) using DTI on 3.0-T MRI. METHODS: DTI was applied to 92 IANs of 46 healthy volunteers. Circular regions of interest (ROIs) were placed on three different positions at the mandibular foramen, second molar and mental foramen of each nerve on apparent diffusion coefficient (ADC) and fractional anisotropy (FA) maps, and the ADC and FA of each ROI were measured...
August 5, 2016: Dento Maxillo Facial Radiology
Kari Antila, Mikko Lilja, Martti Kalke
OBJECTIVES: The motivation behind this work was to design an automatic algorithm capable of segmenting the exterior of the dental and facial bones including the mandible, teeth, maxilla and zygomatic bone with an open surface (a surface with a boundary) from CBCT images for the anatomy-based reconstruction of radiographs. Such an algorithm would provide speed, consistency and improved image quality for clinical workflows, for example, in planning of implants. METHODS: We used CBCT images from two studies: first to develop (n = 19) and then to test (n = 30) a segmentation pipeline...
August 2, 2016: Dento Maxillo Facial Radiology
Katarzyna Z Furmaniak, Marzena A Kołodziejska, Kazimierz T Szopiński
OBJECTIVES: The aim of this study was to assess radiation awareness among dentists, radiographers, dentistry students and radiography students from the Medical University of Warsaw. METHODS: A questionnaire containing 13 multiple-choice questions was administered to 200 dentists, 200 radiographers, 100 dentistry students and 100 radiography students. Participants were asked about basic knowledge concerning dental radiological examinations. RESULTS: In total, 301 (50...
July 29, 2016: Dento Maxillo Facial Radiology
Romeo Patini, Mariantonietta Arrica, Enrico Di Stasio, Patrizia Gallenzi, Massimo Cordaro
OBJECTIVES: A systematic review was conducted to assess the effectiveness of MRI in evaluating upper airway structures in children affected by obstructive sleep apnoea syndrome (OSAS). METHODS: A literature search was performed in the Cochrane Central Register of Controlled Trials, Web of Science, Scopus and PubMed databases from their inception to 31/03/2016, including available randomized controlled trials and controlled clinical trials published in English assessing the use of MRI integrated with traditional polysomnography (PSG) among children up to 15 years of age affected by OSAS...
September 2016: Dento Maxillo Facial Radiology
Raghdaa A Mostafa, Eman A Arnout, Mona M Abo El-Fotouh
OBJECTIVES: The aim of the present study was to assess the feasibility of using mandibular CBCT radiomorphometric indices and box-counting fractal dimension (FD) to detect osteoporosis in post-menopausal females, compare them with the healthy control group and to correlate the findings with the bone mineral density measured by dual X-ray absorptiometry (DXA). METHODS: This study consisted of 50 post-menopausal females, with age ranging from 55 to 70 years. Based on their DXA results, they were classified into osteoporotic and control groups...
September 2016: Dento Maxillo Facial Radiology
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