Ultralow Dose MSCT Imaging in Dental Implantology

Widmann, Gerlig; Al-Ekrish, Asma’a Abdurrahman

doi:10.2174/1874210601812010087

Cited by 10 publications

(10 citation statements)

References 33 publications

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“…Ultrasound, MSCT, MRI, and other imaging techniques are widely used in the early diagnosis of PC. Imaging techniques can be used to directly observe the location, size, shape, invasion, and surrounding organ tissue of the lesion, so as to make an effective differential diagnosis and more accurate clinical staging evaluation of PC [26][27][28]. MRI is a chemical imaging technology, which has the advantages of high soft-tissue resolution, multiple imaging sequences and no ionizing radiation, etc.…”

Section: Discussionmentioning

confidence: 99%

Clinical Significance of Color Ultrasound, MRI, miR-21, and CA199 in the Diagnosis of Pancreatic Cancer

Yang

et al. 2021

Journal of Oncology

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Background. To investigate the clinical significance of color ultrasound, magnetic resonance imaging (MRI), miR-21, and CA199 in the diagnosis of pancreatic cancer (PC). Methods. A total of 160 patients with PC admitted to our hospital from April 2018 to February 2021 were included in the PC group, and another 100 patients with benign pancreatic disease during the same period were included in the pancreatic benign disease group. Color ultrasound and MRI were used for imaging examination of the two groups of PC patients, and the sensitivity, accuracy, and specificity of the two methods for preoperative diagnosis of PC were calculated, respectively. A total of 100 healthy people who underwent physical examination during the same period were included in the control group. Serum CA199 levels of the three groups were detected by ELISA assay. The level of serum miR-21 in the three groups was detected by qRT-PCR. A receiver operating curve (ROC) was drawn to analyze and calculate the sensitivity, specificity, and accuracy of the two serum markers and the combination of color ultrasound and MRI in the detection of PC. Results. Serum CA199 and miR-21 levels in the PC group were significantly higher than those in the benign lesion group and control group. CA199 and miR-21 levels in the benign lesion group were higher than those in the control group. Both color ultrasound and MRI showed a higher detection rate for PC, and the sensitivity and accuracy were significantly higher than those of CA199 and miR-21. The sensitivity, specificity, and accuracy of combined detection were 91.88%, 96.00%, and 93.46%, respectively, which were significantly higher than those of single detection. Conclusion. The combined detection of color ultrasound, MRI, miR-21, and CA199 have a high application value in the early diagnosis of PC, which can effectively improve the sensitivity and accuracy of clinical diagnosis, reduce the probability of missed diagnosis and misdiagnosis, and provide a reference for the rational clinical treatment plan and prognosis.

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Section: Discussionmentioning

confidence: 99%

Clinical Significance of Color Ultrasound, MRI, miR-21, and CA199 in the Diagnosis of Pancreatic Cancer

Yang

et al. 2021

Journal of Oncology

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“…Assim, quando bem indicada, a TCMD passa a ser uma opção para avaliação da região dentomaxilofacial, conforme demonstrado pelos resultados deste e de outros estudos [3][4][5][6][7]11,12 . A implementação desse protocolo com baixa dose de radiação em TCMD torna-se uma ferramenta útil em especial para avaliação de pacientes internados em hospitais.…”

Section: Discussionunclassified

“…Este equipamento, quando adequadamente programado, expõe o paciente a uma menor dose de radiação quando comparado ao protocolo médico padrão, assemelhando-se à Tomografia Computadorizada de Feixe Cônico (TCFC), mantendo a resolução espacial e a nitidez apropriadas para avaliação das estruturas ósseas e dentárias 3,4 . Estudos comparando a TCMD com baixa dose de radiação e a TCFC não encontraram diferenças quanto a qualidade da imagem e medidas lineares [5][6][7] .…”

Section: Introductionunclassified

ULTRA Tomografia Computadorizada Multidetectores com ultra baixa dose de radiação e impressão 3D como auxiliares para cirurgia guiada em implantodontia

Rodrigues

Torriani

Giacomini

et al. 2021

Rev. da Fac. de Odontologia, UPF

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Objetivo: relatar um caso clínico de reabilitação com implante dentário imediato realizado utilizando Tomografia Computadorizada Multidetectores (TCMD) com ultra baixa dose de radiação, software de código aberto para manipulação das imagens e impressão 3D de baixo custo do guia cirúrgico. Relato de caso: paciente, sexo masculino, 50 anos de idade, foi avaliado clinicamente relatando dor na região do dente 45, com suspeita de fratura radicular. Como complemento ao exame clínico, o paciente realizou TCMD com ultra baixa dose de radiação para avaliar a condição dentária e do tecido ósseo adjacente. Tendo sido diagnosticada fratura radicular vertical, procedeu-se ao planejamento virtual do implante e à confecção do guia cirúrgico. As imagens em formato DICOM da TCMD foram convertidas para formato STL (Stereolithography) para manipulação e confecção do guia cirúrgico virtual. Esse guia foi impresso em PLA (poliácido láctico) utilizando impressora 3D pelo método FDM (Fusão e Deposição de Material). Após a exodontia atraumática, o guia cirúrgico foi posicionado nos dentes adjacentes e o implante foi inserido. Clinicamente, o paciente encontra-se assintomático, o implante sem sinais clínicos de inflamação e a prótese em função. Uma segunda tomografia do paciente permitiu comparar de forma tridimensional a posição final do implante e o planejamento virtual, que se mostraram equivalentes. Considerações finais: a impressão 3D em PLA mostrou-se uma solução com custo acessível para a produção de guias cirúrgicos, fornecendo previsibilidade e segurança ao implantodontista.

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“…Interestingly, the lowest dose (0.03 mSv) was measured with a CBCT unit and the highest dose (8.30 mSv) with a different CBCT unit, proving that (depending on the model and setting use) MSCT radiation levels may be even lower than CBCT scan radiation levels. MDCT with optimized low-dose protocols may be considered as an alternative to CBCT in dento-maxillofacial evaluation, as it guarantees comparable image quality with considerable dose reduction, while also preserving soft-tissue detail [ 74 , 75 ].…”

Section: Imagingmentioning

confidence: 99%

Craniofacial Osteomas: From Diagnosis to Therapy

Tarsitano

Ricotta

Spinnato

et al. 2021

JCM

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An osteoma is a benign bone lesion with no clear pathogenesis, almost exclusive to the craniofacial area. Osteomas show very slow continuous growth, even in adulthood, unlike other bony lesions. Since these lesions are frequently asymptomatic, the diagnosis is usually made by plain radiography or by a computed tomography (CT) scan performed for other reasons. Rarely, the extensive growth could determine aesthetic or functional problems that vary according to different locations. Radiographically, osteomas appear as radiopaque lesions similar to bone cortex, and may determine bone expansion. Cone beam CT is the optimal imaging modality for assessing the relationship between osteomas and adjacent structures, and for surgical planning. The differential diagnosis includes several inflammatory and tumoral pathologies, but the typical craniofacial location may aid in the diagnosis. Due to the benign nature of osteomas, surgical treatment is limited to symptomatic lesions. Radical surgical resection is the gold standard therapy; it is based on a minimally invasive surgical approach with the aim of achieving an optimal cosmetic result. Reconstructive surgery for an osteoma is quite infrequent and reserved for patients with large central osteomas, such as big mandibular or maxillary lesions. In this regard, computer-assisted surgery guarantees better outcomes, providing the possibility of preoperative simulation of demolitive and reconstructive surgery.

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Ultralow Dose MSCT Imaging in Dental Implantology

Cited by 10 publications

References 33 publications

Clinical Significance of Color Ultrasound, MRI, miR-21, and CA199 in the Diagnosis of Pancreatic Cancer

Clinical Significance of Color Ultrasound, MRI, miR-21, and CA199 in the Diagnosis of Pancreatic Cancer

ULTRA Tomografia Computadorizada Multidetectores com ultra baixa dose de radiação e impressão 3D como auxiliares para cirurgia guiada em implantodontia

Craniofacial Osteomas: From Diagnosis to Therapy

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