Objectives: To evaluate the use of computed tomography (CT) as an osteoporosis screening tool, evaluating the relation between the bone mineral density (BMD) from maxilla and mandible with the cervical vertebrae, using the Hounsfield units (HU).Methods: It was included in this study a convenience sample of 118 multislice CT examinations from patients who underwent maxilla, mandible and cervical vertebrae (C1 and C2) simultaneously scans. For each patient, the following regions on both sides of head CT scans were assessed in sagittal slice: above maxillary central and lateral incisors apexes; maxillary tuberosity; mandible head; mandible body endosteum; mandible body trabeculae and vertebrae C1 and C2. HU were measured in each area using a 1.5 cm region of interest (ROI) positioned in the center of the slice.Results: It was verified that there is a correlation between the BMD of the C1 and C2 vertebrae and the anterior region of the maxilla. It was not found correlation between the vertebrae, C1 and C2,and the other structures analyzed.Conclusions: This study showed that this method can be a good screening tool to diagnosis ofosteoporosis, when evaluated the correlation between C1 and C2 vertebrae and anterior region of maxilla. More studies are necessary to evaluate the possibility of using CT as an osteoporosisscreening tool.
| Objective: The aim of this study was to evaluate the radiographic aspects of the major salivary glands in sialography and their grade of inflammation with patients' individual characteristics. Methods: A total of 30 radiographic images of both parotid and submandibular glands from 25 patients, who underwent sialography examinations, were retrospectively analyzed. Chi-squared test was performed to correlate the grade of inflammation of each area of the salivary glands with the categorical variables: sex, type and side of the affected gland. Pearson correlation was performed to correlate the grade of inflammation between the main duct and the intraglandular duct and the parenchyma. Results: There was no statistically significant relationship between the grade of inflammation of any of the parts of the salivary glands and the categorical variables in the Chi-squared test (p>0.05). The grade of inflammation in the main duct had a weak correlation with the degree of inflammation in the intraglandular duct (p<0.05). Conclusions: Salivary glands affected by obstruction or inflammation are not significantly related to the sex of patients, not to the type or side of the affected gland. The , but sialography examination demonstrated the delicate anatomy of the ductal system and allowed an accurate visualization of sialoliths and strictures that are two of the most common causes of obstruction, showing its important role in the assessment of salivary gland status. DESCRIPTORS | Sialography; Salivary Glands; Salivary Gland Calculi; Sialadenitis; Diagnosis, Oral. RESUMO | Aspectos radiográficos das glândulas salivares maiores na sialografia • Objetivo: O objetivo deste estudo foi avaliar os aspectos radiográficos das glândulas salivares maiores na sialografia e seu grau de inflamação com as características individuais dos pacientes. Métodos: Trinta imagens radiográficas de ambas as glândulas parótidas e submandibulares de 25 pacientes submetidos a exames de sialografia foram analisadas retrospectivamente. O teste qui-quadrado foi realizado para correlacionar o grau de inflamação de cada área das glândulas salivares com as variáveis categóricas: sexo, tipo e lado da glândula afetada. A correlação de Pearson foi realizada para correlacionar o grau de inflamação entre o ducto principal e o ducto intraglandular e o parênquima. Resultados: Não houve relação estatisticamente significante entre o grau de inflamação de nenhuma das partes das glândulas salivares e as variáveis categóricas no teste qui-quadrado (p>0,05). O grau de inflamação no ducto principal teve uma fraca correlação com o grau de inflamação no ducto intraglandular (p<0,05). Conclusões: As glândulas salivares afetadas por obstrução ou inflamação não estão significativamente relacionadas ao sexo dos pacientes e nem ao tipo ou lado da glândula afetada. O exame de sialografia demonstrou a delicada anatomia do sistema ductal e permitiu uma visualização precisa dos sialólitos e estenoses, que são duas das causas mais comuns de obstrução, mostrando seu importante papel n...
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