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Dento Maxillo Facial Radiology

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https://www.readbyqxmd.com/read/28707954/lymphoepithelial-carcinoma-of-salivary-glands-ct-and-mr-imaging-findings
#1
Pingzhong Wang, Jie Yang, Qiang Yu
OBJECTIVES: To depict the CT and MR imaging characteristics of salivary gland lymphoepithelial carcinoma (LEC) and provide more diagnostic information for this malignancy. METHODS: One hundred and three salivary gland LEC subjects were retrospectively reviewed. The subjects include 35 males with a mean age of 40.8 years and 68 females with a mean age of 49.4 years. Of 103 subjects, 86 subjects were in the parotid gland, five in the submandibular gland, one in the sublingual gland, three in the cheek, and eight in the palate...
July 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28707526/diagnostic-validity-of-periapical-radiography-and-cbct-for-assessing-periapical-lesions-that-persist-after-endodontic-surgery
#2
Casper Kruse, Rubens Spin-Neto, Jesper Reibel, Ann Wenzel, Lise-Lotte Kirkevang
OBJECTIVES: Traditionally, healing after surgical endodontic retreatment (SER); i.e. apicectomy with or without a retrograde filling, is assessed in periapical radiographs (PR). Recently, the use of Cone Beam CT (CBCT) has increased within endodontics. Generally, CBCT detects more periapical lesions than PR, but basic research on the true nature of these lesions is missing. The objective was to assess the diagnostic validity of PR and CBCT for determining inflammation in SER-cases that were re-operated (SER-R) due to unsuccessful healing, using histology of the periapical lesion as reference for inflammation...
July 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28707525/is-there-a-role-for-ultrasound-guided-sialoplasty-in-the-management-of-salivary-duct-strictures
#3
Jimmy Makdissi, Lee Feinberg, Amit Roy
Ductal stricture is a common cause of obstructive salivary gland disease. Balloon dilatation of the parotid duct as a minimally invasive technique is currently carried out under fluoroscopic guidance or during sialendocopy. We present a case report of ultrasound guided balloon dilatation. A 45 year old lady presented with a long history of obstructive symptoms affecting the right parotid gland. Ultrasound examination revealed a tortuous right main parotid duct with marked dilatation throughout its course and multiple sites of focal stricture formation...
July 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28707524/applicability-of-cameriere-s-and-drusini-s-age-estimation-methods-to-a-sample-of-turkish-adults
#4
Hatice Boyacioglu Dogru, Nihal Avcu, Nursel Akkaya, Humeyra Ozge Yilanci, Dincer Goksuluk
OBJECTIVES: The aim of this study was to investigate the applicability of Drusini's and Cameriere's methods to a sample of Turkish people. METHODS: Panoramic images of 200 individuals were allocated into two groups as study and test groups and examined by two observers. Tooth coronal indexes (TCI), which is the ratio between coronal pulp cavity height and crown height, were calculated in the mandibular first and second premolars and molars. Pulp/tooth area ratios (ARs) were calculated in the maxillary and mandibular canine teeth...
July 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28707523/strut-analyses-for-detecting-osteoporosis-using-dental-panoramic-radiography
#5
Jae Joon Hwang, Jeong-Hee Lee, Young Hyun Kim, Ho-Gul Jeong, Yoon Jeong Choi, Wonse Park, Sang-Sun Han
OBJECTIVES: The aim of this study was to identify variables that can be used for osteoporosis detection using strut analysis, fractal dimension (FD), and the gray level co-occurrence matrix (GLCM) using multiple regions of interest (ROIs) and to develop an osteoporosis detection model based on panoramic radiography. METHODS: A total of 454 panoramic radiographs from oral examinations in our dental hospital from 2012 to 2015 were randomly selected, equally distributed among osteoporotic and non-osteoporotic patients (n=227 in each group)...
July 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28555506/capability-of-cbct-to-identify-patients-with-low-bone-mineral-density-a-systematic-review
#6
Eliete N S Guerra, Fabiana T Almeida, Fernanda V Bezerra, Paulo T D S Figueiredo, Maria A G Silva, Graziela De Luca Canto, Camila Pachêco-Pereira, André F Leite
The aim of this study was to systematically review the literature about the capability of CBCT images to identify individuals with low bone mineral density (BMD). As the literature is scarce regarding this topic, the purpose of this systematic review is also to guide future research in this area. A detailed search was performed in five databases without restrictions of time or languages. Additionally, a grey literature search was conducted. The Quality Assessment Tool for Diagnostic Accuracy Studies-2 was applied to evaluate the methodological design of selected studies...
July 3, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28452576/the-effects-of-a-common-stainless-steel-orthodontic-bracket-on-the-diagnostic-quality-of-cranial-and-cervical-3t-mr-images-a-prospective-case-control-study
#7
Michele Cassetta, Nicola Pranno, Alessandro Stasolla, Nicola Orsogna, Davide Fierro, Costanza Cavallini, Vito Cantisani
OBJECTIVES: To evaluate the effect of orthodontic stainless steel brackets and two different types of archwires on the diagnostic quality of 3-T MR images. METHODS: This prospective, case-control study was conducted following Strengthening the Reporting of Observational Studies in Epidemiology guidelines. The recruitment was conducted among orthodontic patients. 80 subjects, requiring MRI for the presence of temporomandibular disorders, were enrolled and divided into four groups: 20 patients using aligners (control group); 20 patients with stainless steel brackets without archwires; 20 patients with stainless steel brackets and nickel-titanium archwires; and 20 patients with stainless steel brackets and stainless steel archwires...
June 21, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28511564/head-and-neck-effective-dose-and-quantitative-assessment-of-image-quality-a-study-to-compare-cone-beam-ct-and-multislice-spiral-ct
#8
Cosimo Nardi, Cinzia Talamonti, Stefania Pallotta, Paola Saletti, Linda Calistri, Cesare Cordopatri, Stefano Colagrande
OBJECTIVES: To evaluate the effective dose and image quality of horizontal CBCT in comparison with multislice spiral CT (MSCT) in scans of the head, cervical spine, ear and dental arches. METHODS: A head and neck Alderson-Rando(®) phantom (The Phantom Laboratory, Salem, NY) equipped with 74 thermoluminescence dosemeters was exposed according to 5 different scans in CBCT and 4 different scans in MSCT. Spatial and contrast resolutions, in terms of modulation transfer function and contrast-to-noise ratio (CNR), were measured to obtain a quantitative assessment of image quality...
June 20, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28511561/depression-of-the-maxillary-sinus-anterior-wall-and-its-influence-on-panoramic-radiography-appearance
#9
Kazuhito Yoshida, Motoki Fukuda, Kenichi Gotoh, Eiichiro Ariji
OBJECTIVES: To clarify the depression aspect of the maxillary sinus anterior wall and to investigate its relationship with the panoramic image appearance of a diagonal line from the inferior part of the so-called panoramic innominate line to the medial portion of the orbital floor line. METHODS: Based on CT data, panoramic images were simulated for two typical cases with and without anterior wall depression. Next, on axial CT images of 1689 subjects (3378 sinuses) stored in our image database, the wall depths were measured and analyzed for their relationships with the panoramic appearances of the diagonal line, classified into invisible, obscure and clear patterns...
June 20, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28467114/changes-in-the-distributions-of-fluorine-18-labelled-fluoro-2-deoxy-d-glucose-accumulation-into-tongue-related-muscles-after-dissection-in-patients-with-tongue-cancer
#10
Shinji Kito, Hirofumi Koga, Masafumi Oda, Tatsurou Tanaka, Ikuya Miyamoto, Masaaki Kodama, Manabu Habu, Shinya Kokuryo, Kenji Osawa, Noriaki Yamamoto, Shinobu Matsumoto-Takeda, Nao Wakasugi-Sato, Noriaki Kawanabe, Daigo Yoshiga, Shun Nishimura, Takaaki Joujima, Ayae Kito-Shingaki, Masataka Uehara, Masaaki Sasaguri, Yasuhiro Morimoto
OBJECTIVES: To elucidate the changes in the distributions of fluorine-18-labelled fluoro-2-deoxy-d-glucose ((18)F-FDG) accumulation in the tongue muscles of patients following four kinds of surgical operations for tongue cancers. METHODS: The changes in the distributions of (18)F-FDG accumulations in the tongue muscles on positron emission tomography (PET)-CT, in association with imaging findings on CT and MRI, were retrospectively analyzed before and after four kinds of surgical operations for 50 patients with tongue cancers...
June 20, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28613936/the-employment-of-thermographic-examinations-in-the-diagnostics-of-diseases-of-the-paranasal-sinuses
#11
Iwona Niedzielska, Sebastian Pawelec, Zbigniew Puszczewicz
OBJECTIVES: The paper was aimed at assessing the diagnostic value of a thermographic examination of pathology of the paranasal sinuses. METHODS: 39 patients meeting inclusion criteria for the study. The cases of unilateral inflammations of the maxillary sinuses (odontogenic and non-odontogenic, acute and chronic) were chosen on the basis of a comprehensive panel of diagnostic tests including among other things: a radiological examination, endoscopy, the histopathological assessment of the state of the collected mucous membrane...
June 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28613920/diagnosis-of-alveolar-and-root-fractures-in-macerated-canine-maxillae-a-comparison-between-two-different-cbct-protocols
#12
Solange Kobayashi-Velasco, Fernanda C S Salineiro, Ivan O Gialain, Marcelo G P Cavalcanti
OBJECTIVE: To compare two small field of view (FOV) cone-beam computed tomography (CBCT) protocols with different voxel sizes, and number of frames for the diagnosis of root and alveolar fractures in macerated canine maxillae. METHODS: Eighty incisor teeth from the canine species were inserted in eighty anterior alveolar sockets of twenty canine maxillae. An operator randomly divided each maxilla site (eighty sites in total) into four equal groups of 20 sites: 1 (sound tooth and non-fractured alveolar socket); 2 (sound tooth and fractured alveolar socket); 3 (fractured root and non-fractured alveolar socket); 4 (fractured root and fractured alveolar socket)...
June 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28467118/reliability-and-accuracy-of-three-imaging-software-packages-used-for-3d-analysis-of-the-upper-airway-on-cone-beam-computed-tomography-images
#13
Hui Chen, Maureen van Eijnatten, Jan Wolff, Jan de Lange, Paul F van der Stelt, Frank Lobbezoo, Ghizlane Aarab
OBJECTIVES: The aim of this study was to assess the reliability and accuracy of three different imaging software packages for three-dimensional analysis of the upper airway using CBCT images. METHODS: To assess the reliability of the software packages, 15 NewTom 5G(®) (QR Systems, Verona, Italy) CBCT data sets were randomly and retrospectively selected. Two observers measured the volume, minimum cross-sectional area and the length of the upper airway using Amira(®) (Visage Imaging Inc...
June 14, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28467130/masseter-muscle-measurement-performed-by-ultrasound-a-systematic-review
#14
Ana Paula Reis Durão, Aline Morosolli, Jackie Brown, Reinhilde Jacobs
The aim of this study was to systematically review the existing scientific literature and evidence about (a) the validation of masseter muscle ultrasonography for accurate assessment of muscle thickness and (b) the reproducibility of masseter muscle thickness measures. An electronic literature search was conducted using determined keywords on specific databases. Preliminary search revealed 298 articles listed in Medline, Scopus and Web of Science. 60 duplicates were rejected, leaving 238 articles for review...
June 8, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28402714/3d-dental-image-registration-using-exhaustive-deformable-models-a-comparative-study
#15
Maria-Pavlina Kalla, Theodore L Economopoulos, George K Matsopoulos
OBJECTIVES: Image registration is commonly used in dental applications for aligning imaging data sets, which is particularly useful when assessing the progression or regression of particular pathomorphic conditions. However, due to the nature of the processed data or the data acquisition process itself, rigid body registration may be insufficient to accurately align the processed data sets. In such cases, deformable models are employed. This study presents a comparison of four well-established deformable models for aligning CBCT volumes...
May 24, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28511563/authors-response-development-and-validation-of-a-questionnaire-to-evaluate-infection-control-in-oral-radiology-consistent-statistical-analyses-and-methodology
#16
Eliana D da Costa, José E Corrente, Glaucia M B Ambrosano
No abstract text is available yet for this article.
July 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28384073/the-estimation-of-skeletal-maturity-of-patients-with-cleft-lip-and-palate-using-statistical-shape-analysis-a-preliminary-study
#17
Sung-Hun Kim, Youn-Kyung Choi, Sang Min Shin, Yong-Seok Choi, Tetsutaro Yamaguchi, Masahiro Takahashi, Koutaro Maki, Soo-Byung Park, Yong-Il Kim
OBJECTIVES: To propose a skeletal maturity assessment method by developing a statistical regression analysis model through the integration of lateral and axial images of the cervical vertebrae of patients with cleft lip and palate obtained through CBCT. METHODS: 49 patients with cleft lip and palate (28 females, 21 males; age range, 4-16 years) underwent CBCT examination, and the hand-wrist radiographic data were selected. With coordinates of landmarks from lateral and axial images of the cervical vertebrae, Procrustes analysis and principal component (PC) analysis yielded PC scores of each cervical vertebra, with the centroid size as the size factor...
July 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28375696/development-and-validation-of-a-questionnaire-to-evaluate-infection-control-in-oral-radiology-methodological-issues-to-avoid-misinterpretation
#18
Saeid Safiri, Erfan Ayubi
No abstract text is available yet for this article.
July 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28350523/comparison-of-micro-ct-and-cone-beam-ct-on-the-feasibility-of-assessing-trabecular-structures-in-mandibular-condyle
#19
Xin Liang, Zuyan Zhang, Jianping Gu, Zhihui Wang, Bart Vandenberghe, Reinhilde Jacobs, Jie Yang, Guowu Ma, Haibin Ling, Xuchen Ma
OBJECTIVES: To evaluate the accuracy of CBCT in assessing trabecular structures. METHODS: Two human mandibles were scanned by micro-CT (Skyscan 1173 high-energy spiral scan micro-CT; Skyscan NV, Kontich, Belgium) and CBCT (3D Accuitomo 170; Morita, Japan). The CBCT images were reconstructed with 0.5 and 1 mm thicknesses. The condylar images were selected for registration. A parallel algorithm for histogram computation was introduced to perform the registration...
July 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28332866/comparing-cone-beam-computed-tomography-with-periapical-radiography-for-assessing-root-canal-obturation-in-vivo-using-microsurgical-findings-as-validation
#20
Dongzhe Song, Lan Zhang, Wei Zhou, Qinghua Zheng, Xingyu Duan, Xuedong Zhou, Dingming Huang
OBJECTIVES: The aim of this study was to verify whether there is a difference in the in vivo performance characteristics of CBCT and periapical radiography (PR) in assessing the apical extension of root canal obturation (RCO) and to evaluate the ability of CBCT in void detection using microsurgical findings as validation. METHODS: This study included 323 tooth roots that required surgical treatment and for which pre-existing periapical radiographs and CBCT images were available...
July 2017: Dento Maxillo Facial Radiology
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