Avaliação do Seio Maxilar: Radiografia Panorâmica Versus Tomografia Computadorizada de Feixe Cônico

O objetivo deste estudo retrospectivo implica em comparar a presença de velamento, o espessamento de mucosa e a presença de septo no seio maxilar em radiografias panorâmicas e tomografias computadorizadas de feixe cônico (TCFC). A amostra foi composta por 100 pacientes do arquivo, que apresentavam as radiografias panorâmicas e as TCFC antes do início do tratamento ortodôntico, sendo 57 mulheres e 43 homens, com média de idade de 19,08 anos. Foram incluídas nesta pesquisa apenas os exames que apresentavam boa qualidade e bom posicionamento do paciente. A avaliação do velamento, espessamento de mucosa e presença de septo no seio maxilar foi realizada por um único examinador calibrado, de forma independente, nas radiografias e nas TCFC. A concordância entre os exames foi avaliada por meio do teste Kappa. Os resultados demonstraram boa concordância entre as radiografias panorâmicas e TCFC (Kappa entre 0,62 a 0,72), com -90, -88 e 89% de convergência entre os métodos, para velamento do seio maxilar; espessamento de mucosa e presença de septo no seio maxilar, respectivamente. Pode-se concluir que foi encontrada concordância satisfatória na avaliação do velamento, espessamento de mucosa e presença de septo no seio maxilar entre as radiografias panorâmica e TCFC. Dessa forma, as características do seio maxilar foram identificadas, de maneira semelhante, na radiografia panorâmica e na TCFC.Palavras-chave: Tomografia Computadorizada por Raios X. Radiografia Panorâmica. Diagnóstico.AbstractThe objective of this retrospective study was to compare the presence of filled maxillary sinus, mucosal thickening and the presence of septum in the maxillary sinus on panoramic radiographs and concomitant computed tomography (CBCT) scans. The sample consisted of 100 patients from the archive who presented the panoramic radiographs and the CBCT before the beginning of the orthodontic treatment, being 57 women and 43 men, with a mean age of 19.08 years. Only the exams that presented good quality and good positioning of the patient were included in this study. The evaluation of the presence of filled maxillary sinus, mucosal thickening and the presence of septum in the maxillary sinus was performed by a single examiner, regardless of who was calibrated on panoramic radiograph and CBCT. The agreement among the exams was assessed by means of Kappa test. The results showed good agreement between panoramic radiograph and CBCT (Kappa between 0.62 and 0.72), with -90, -88 and 89% convergence between the methods, for the presence of filled maxillary sinus, mucosal thickening and presence of septum in the maxillary sinus, respectively. It can be concluded that satisfactory agreement was found in the evaluation of the the presence of filled maxillary sinus, mucosal thickening and presence of septum in the maxillary sinus between the panoramic and CBCT radiographs. Thus, the characteristics of the maxillary sinus were similarly identified in panoramic radiography and CBCT.Palavras-chave: Tomography, X-Ray Computed. Radiography, Panoramic. Diagnosis.

Download Full-text

Incidental findings detected with panoramic radiography: prevalence calculated on a sample of 2017 cases treated at a major Italian trauma and cancer centre

Oral Radiology ◽

10.1007/s11282-020-00488-1 ◽

2020 ◽

Author(s):

Sogol Ghassemzadeh ◽

Luca Sbricoli ◽

Anna Chiara Frigo ◽

Christian Bacci

Keyword(s):

Maxillary Sinus ◽

Incidental Findings ◽

Total Population ◽

Panoramic Radiography ◽

Panoramic Radiograph ◽

Panoramic Radiographs ◽

Carotid Artery Calcification ◽

Total Prevalence ◽

Dental Practitioners ◽

The Right

Abstract Objectives This study aimed to assess the prevalence of incidental findings, not strictly related to dentistry, viewed with panoramic radiography. Methods Panoramic radiographs performed between December 2013 and June 2016 were retrospectively collected. These images were analyzed, searching for incidental findings. All the information collected was statistically analysed Results A total of 2307 Panoramic Radiograph were analyzed and 2017 of them were included in the study. 529 incidental findings were seen: 255 (48.2%) were ESP (Elongation of Styloid Process), 167 were CAC (Carotid Artery Calcification) (31.57%), 36 were maxillary sinus pathologies (6.8%) and 71 were other incidental findings (13.42%). The total prevalence of IF was 26, 23%., CAC was 8.28% in the total population, and it was higher in women (9.82%) than men (6.54%). 48.5% of CAC were bilateral. When unilateral, the right side showed a higher right side prevalence. The prevalence of ESP was 12.64% in total population (men: 13.82%; women: 11.60%). 84.71% of ESP were bilateral and, when present unilaterally, no side difference was seen. 13.33% of the ESP appeared segmented. The prevalence of maxillary sinus pathologies was 1.78% (men: 2.32%; women: 1.31%). Only 8.33% of these pathologies were bilateral, and, when unilateral, they were mostly present on the right side. Between the 71 other IF (prevalence: 3.52%), sialoliths and tonsilloliths were assessed most frequently. Conclusion Due to the high prevalence of incidental findings detected with panoramic radiography, dental practitioners should be aware of the various pathologic conditions seen on the panoramic radiographs.

Download Full-text

Maxillary Sinus Findings in the Elderly: A Panoramic Radiographic Study

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-10-6-41 ◽

2009 ◽

Vol 10 (6) ◽

pp. 41-48 ◽

Cited By ~ 2

Author(s):

Keerthilatha M. Pai ◽

Anuna Laila Mathew ◽

Amar A. Sholapurkar

Keyword(s):

Maxillary Sinus ◽

Panoramic Radiography ◽

Statistical Significance ◽

Panoramic Radiograph ◽

The Elderly ◽

Elderly Subjects ◽

Radiographic Study ◽

Diagnostic Quality ◽

Upper Jaw ◽

Mucosal Thickening

Abstract Aim The aim of the present study was to investigate the prevalence of maxillary sinus findings in elderly subjects above the age of 50 through the use of panoramic radiography and to test the hypothesis that such findings are more prevalent in dentate subjects. Methods and Materials A total of 105 subjects over the age of 50 years were examined both clinically and radiographically in the Department of Oral Medicine and Radiology of the Manipal College of Dental Sciences in Manipal, India, over a period of three months for various reasons. Eight were excluded due to the lack of diagnostic quality of their radiographs. The manually calculated kappa test was used to determine the statistical significance of intra-examiner reliability. The other data were analyzed using a manually calculated z-test for proportions where z ≥ 1.96 or p<0.05 were considered statistically significant. Results The prevalence of radiographic maxillary sinus findings in 97 elderly subjects (aged above 50 years) were investigated with the use of panoramic radiography. Fifty subjects had at least one natural tooth radiographically in the upper jaw and 39 subjects were radiographically edentulous in the upper jaw. Mucous cysts or diffused mucosal thickenings were found in 42.26% of the subjects. Of the mucosal thickenings, 74.35% were found in subjects with a dentate upper jaw (p<0.05). The prevalence of a mucous cyst was 2.06% in subjects with a dentate upper jaw and a finding of no mucous cysts in edentulous subjects suggests an odontogenic cause. Conclusions According to the findings of the present study, the presence of mucosal thickening or mucosal cysts may be due to the presence of irritative stimuli, often an infection of dental origin, as these findings are more prevalent in dentulous subjects. Clinical Significance The panoramic radiograph is an excellent diagnostic tool for the identification of mucosal thickening and mucosal cysts. The accurate diagnosis of infective foci (chronic apical periodontitis, deep pockets caused by periodontitis) is necessary, because in conditions of decreased host resistance it may lead to acute sinusitis. Citation Mathew AL, Sholapurkar AA, Pai KM. Maxillary Sinus Findings in the Elderly: A Panoramic Radiographic Study. J Contemp Dent Pract [Internet]. 2009 Nov; 10(6):041-048. Available from: http://www.thejcdp.com/journal/ view/volume10-issue6-mathew.

Download Full-text

Evaluation of the Accuracy of Panoramic Radiograph in the Definition of Maxillary Sinus Septa

Acta Medica (Hradec Kralove Czech Republic) ◽

10.14712/18059694.2019.76 ◽

2002 ◽

Vol 45 (4) ◽

pp. 173-175 ◽

Cited By ~ 19

Author(s):

Samer Kasabah ◽

Radovan Slezák ◽

Antonín Šimůnek ◽

Jiří Krug ◽

Miguel Cevallos Lecaro

Keyword(s):

Ct Scan ◽

Maxillary Sinus ◽

Panoramic Radiography ◽

Panoramic Radiograph ◽

The Other ◽

Negative Results ◽

Other Hand ◽

Maxillary Sinus Septa ◽

False Diagnosis ◽

Definition Of

The purpose of this study was to determine the accuracy of panoramic radiography in identification of maxillary sinus septa. Out of 68 sinuses were radiographically examined using both panoramic and computerized tomographic radiographs (CT scan). Using CT scan, 24 (35.9 %) out of 68 cases maxillae showed at least one septum, 22 sinuses (32.3 %) showed one septum, whereas two sinuses (2.9 %) exhibited two septa. Panoramic radiograph led to a false diagnosis regarding the presence or absence of sinus septa in 18 of 68 sinuses (26.5 %). On the other hand, they gave negative diagnosis of sinus septa in 12 of 24 septa (50 %). There was fully agreement between the two methods (positive septa) only in 12 of 24 septa (50 %). We cannot depend on panoramic radiograph for the detection of sinus septa because it can lead to false or negative results.

Download Full-text

X‐Ray‐Computed Radiography and Tomography Study of Electrolyte Invasion and Distribution inside Pristine and Heat‐Treated Carbon Felts for Redox Flow Batteries

Energy Technology ◽

10.1002/ente.201901214 ◽

2019 ◽

Vol 8 (3) ◽

pp. 1901214 ◽

Cited By ~ 3

Author(s):

Marcus Gebhard ◽

Maike Schnucklake ◽

André Hilger ◽

Maximilian Röhe ◽

Markus Osenberg ◽

...

Keyword(s):

Computed Radiography ◽

X Ray ◽

Redox Flow Batteries ◽

Heat Treated ◽

Flow Batteries ◽

X Ray Computed ◽

Treated Carbon

Download Full-text

Efficacy of Panoramic Radiography in the Detection of Osteoporosis in Post-Menopausal Women When Compared to Dual Energy X-Ray Absorptiometry

The Open Dentistry Journal ◽

10.2174/1874210601711010350 ◽

2017 ◽

Vol 11 (1) ◽

pp. 350-359 ◽

Cited By ~ 5

Author(s):

Shambulingappa Pallagatti ◽

Priyanka Parnami ◽

Soheyl Sheikh ◽

Deepak Gupta

Keyword(s):

Early Stage ◽

Panoramic Radiograph ◽

Dual Energy ◽

Mineral Density ◽

Panoramic Radiographs ◽

X Ray ◽

Dexa Scan ◽

The People ◽

Average Accuracy ◽

Post Menopausal

Objective:It is a well-known fact that osteoporosis affects the people with old age and remains unnoticeable until the patient presents with fracture. Various studies in the literature reveal that panoramic radiographs may prove to be beneficial in the detection of Osteoporosis in patients. Henceforth this present study was aimed to validate the use of Klemetti Index (KI) on panoramic radiographs so as to detect osteoporosis in the patients at an early stage.Methods:60 postmenopausal women were selected. A panoramic radiograph was taken to grade their mandibular cortex on the basis of Klemetti Index. All the panoramic radiographs were evaluated by 5 different Oral Medicine and Radiology specialists. Later all the patients were subjected to dual energy X-ray absorptimetry (DEXA) scan for bone mineral density evaluation. The results were evaluated statistically.Results:The average accuracy of the five observers to demonstrate normal bone, osteopenia and osteoporosis when compared to DEXA scan was 58.08%, 63.3% and 64.74% respectively. The observations of the 5 observers on the basis of KI were not statistically different from the BMD evaluation done with the help of DEXA Scan.Conclusion:Panoramic radiographs can be used as a screening tool for the evaluation as well as early detection of osteoporosis with the usage of Klemetti Index.

Download Full-text

Identification of the Bony Canal of the Posterior Superior Alveolar Nerve and Artery in the Maxillary Sinus: Tomographic, Radiographic, and Macroscopic Analyses

The Scientific World JOURNAL ◽

10.1155/2015/878205 ◽

2015 ◽

Vol 2015 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Iris Jasmin Santos German ◽

Daniela Vieira Buchaim ◽

Jesus Carlos Andreo ◽

Elio Hitoshi Shinohara ◽

Ana Lúcia Alvares Capelozza ◽

...

Keyword(s):

Maxillary Sinus ◽

Three Dimensional ◽

Lateral Wall ◽

Panoramic Radiograph ◽

3D Ct ◽

Identification Methods ◽

Panoramic Radiographs ◽

Bony Canal ◽

Common Shape ◽

Posterior Anterior

The aim of this study was to identify the shape and route of the bony canal of the posterior superior alveolar artery (PSAA) and posterior superior alveolar nerve (PSAN) using different identification methods, including computed tomography (CT), panoramic radiograph, and macroscopic evaluation (corpse and dry skull). Twenty-four patients were analyzed by CT and panoramic and posterior anterior (PA) radiographs; additionally, 90 dry skulls and 21 dissected anatomical specimens were examined. Three-dimensional-CT revealed that the lateral wall of the maxillary sinus resembled a tunnel format in 60% of the treated patients. Out of all 24 patients, the panoramic radiograph identified the bony canal in only one patient; whereas the PA radiograph identified it in 80% of the patients. The dry skulls showed tunnellike routes of the PSAA and PSAN in 65% of the cases. Moreover, the pathway was also visibly observed in the dissected anatomical specimens as a straight shape in 85% of the cases. Thus, our results demonstrated that the most common shape of the bony canal of the PSAA and PSAN is the tunnel format with a straight route by 3D-CT, posterior anterior radiography, and macroscopic evaluation. However, in the panoramic radiographs, it was difficult to identify this canal.

Download Full-text

Diagnostic accuracy of panoramic radiography and ultrasonography in detecting periapical lesions using periapical radiography as a gold standard

Dentomaxillofacial Radiology ◽

10.1259/dmfr.20190290 ◽

2020 ◽

Vol 49 (6) ◽

pp. 20190290

Author(s):

Zeynep Betül Arslan ◽

Hilal Demir ◽

Dila Berker Yıldız ◽

Füsun Yaşar

Keyword(s):

Diagnostic Accuracy ◽

Predictive Value ◽

Gold Standard ◽

Panoramic Radiography ◽

Imaging Techniques ◽

Panoramic Radiograph ◽

Periapical Lesion ◽

Panoramic Radiographs ◽

Periapical Lesions ◽

Anterior Teeth

Objectives: The purpose of this study was to compare the accuracy of imaging techniques in diagnosing periapical lesions. Methods: Imaging records of 80 patients (51 females, 29 males, aged between 14 and 75 years) including periapical and panoramic radiographs and ultrasonographic images were selected from databases of Selcuk University Dentistry Faculty. Periapical radiographs were accepted as gold-standard and 160 anterior maxillary and mandibular teeth with or without periapical lesion were included to the study. Three specialist observers (dental radiologists) evaluated the presence and appearance of periapical lesions on panoramic radiograph and ultrasonographic images. Sensitivity, specificity, positive predictive value, negative predictive value and diagnostic value of panoramic radiographs and ultrasonography were determined. Results: Sensitivity was 0.80 and 0.77 for ultrasonographic images and panoramic radiographs, respectively which shows that periapical lesion was correctly detected in 80% of the cases with ultrasound and in 77% of the cases with panoramic radiography. Specificity values were determined as 0.97 for ultrasound and 0.95 for panoramic radiography. Overall diagnostic accuracy was 0.86 and 0.84 for ultrasound and panoramic radiography, respectively. Conclusions: Periapical and panoramic radiographs are commonly used to visualize periapical lesions. Besides, ultrasonography is an alternative method to digital radiographic techniques in the diagnosis of anterior teeth with periapical lesions.

Download Full-text

Use of X-ray Tomography for the Experimental Verification of a Mathematical Model for the Recovery of Cu and Cd in a Flow-By Porous Electrode Reactor.

International Journal of Chemical Reactor Engineering ◽

10.1515/1542-6580.2930 ◽

2012 ◽

Vol 10 (1) ◽

Cited By ~ 1

Author(s):

Oscar G. Olvera ◽

Gretchen T. Lapidus-Lavine

Keyword(s):

Mathematical Model ◽

Electrode Potential ◽

Porous Electrode ◽

Electrochemical Reactor ◽

X Ray ◽

Model Predictions ◽

X Ray Computed ◽

Reactor Operating ◽

Metallic Deposit ◽

Good Agreement

In this work a mathematical model for a flow-by electrochemical reactor operating galvanostatically for the Cu and Cd electrodeposition and hydrogen evolution reaction (HER) has been proposed. X-ray computed tomography was used to measure experimental metallic distributions. Good agreement was found between the experimental measurements and model predictions for conversion, current efficiencies, electrode potential and metallic deposit distributions. Differences were observed between experimental results and model predictions and were attributed to a change in Cd electrodeposition and HER kinetics.

Download Full-text

Prevalence Of Maxillary Sinus Jaw Mucuous Cysts In University Dental Radiology Service

International Archives of Medicine ◽

10.3823/2488 ◽

2017 ◽

Vol 10 ◽

Author(s):

Joaquim Lira Saraiva Neto ◽

Lidia Audrey Rocha Valadas Marques ◽

Edilson Martins Rodrigues Neto ◽

Barbara Betty De Lima ◽

Francineudo Oliveira Chagas ◽

...

Keyword(s):

Maxillary Sinus ◽

Panoramic Radiography ◽

Dental Radiology ◽

Retention Cyst ◽

Panoramic Radiographs ◽

Radiology Service ◽

Digital File ◽

Mucous Retention Cyst ◽

Mucous Cyst ◽

The Right

Background: Mucosal cyst of the maxillary sinus or antral pseudocyst is one of great importance injury, being the pathology that affects more the maxillary sinus. Their discovery, in most cases, it is for the interpretation of the images in routine panoramic radiography. Aims: The research aimed to evaluate the prevalence of mucous cyst in maxillary sinus in radiology clinic at Ceara Federal University. Material and Methods: To this study conduction, were analyzed 1996 panoramic radiographs from a digital file obtained between April 2011 to April 2013 Results:. Aspects as gender, affected side and teeth absence next to the cyst in the respective quadrant were evaluated.It was observed in the sample the occurrence of 45 patients with suggested images of mucous cysts in maxillary sinus,making a prevalence of 2,25%. From them, 26 (57,8%)were female and 19 (42,2%) were male. 48 maxillary sinuswere affected with the wound, from which28 (58,3%) it was in the left side and 20 (41,7%) in the right site. Three patients presented the wound in both sides, what represents 6,7% of the affected patients. From those 48 Mucous retention cyst, 40 (83,3%) were not related to an edentulous area in ipsilateral quadrant and 8 (16,7%) were shown next to an edentulous area. Conclusion: The conclusion was that the cyst of retention mucous in the maxillary sinus had prevalence in males and in the left side of the maxillary sinus. It was not found a relation between the cyst and the edentulous area.

Download Full-text

Going Beyond Appearances: Examination of Hidden Paint Layers in a Gulistan of Sa'di from the Freer Gallery of Art

10.5479/si.9728213.v1 ◽

2019 ◽

Author(s):

Elisabetta Polidori ◽

Emily Jacobson ◽

Blythe McCarthy

Keyword(s):

Seventeenth Century ◽

Computed Radiography ◽

Imaging Technology ◽

X Ray ◽

New Information ◽

X Ray Computed ◽

Technical Study ◽

The Many

<div>Among the many manuscripts at the Freer Gallery of Art is a lavishly illuminated copy of the <i>Gulistan</i> of Sa‘di (F1998.5). This manuscript was transcribed in an elegant nasta‘liq script by renowned calligrapher Sultan ‘Ali Mashhadi in Herāt (present-day Afghanistan) in 1468, but much of its history is unknown. The text includes six paintings that were added in the seventeenth century during the reign of Mughal emperor Shah Jahan in India. Stains on the versos of the painted pages provide tantalizing traces of the existence of earlier illustrations underneath the Mughal ones. A technical study incorporating infrared and ultraviolet imaging, X-ray computed radiography, and targeted pigment analyses has revealed new information about these preexisting paintings. The size of the figures and the intermediate changes to the compositions suggest there were several working phases for the manuscript. A revised chronology now includes these phases and further enriches our understanding of this complex manuscript. From a technical standpoint, this research highlights both the challenges and undeniable potential of imaging technology for the study of Islamic manuscript paintings, many of which have been reworked at various times in their history.</div>

Download Full-text