In recent research developed by our group, it was characterized and described the technical acquisition parameters of magnetic resonance imaging (MRI), with magnetic field intensity (MFi) of 1.5T, and its processing for printing three‐dimensional (3D) models of articular cartilage of patella. Such methodology should significantly contribute to the improvement of diagnosis, therapeutic planning and outcomes in the treatment of chondral patellar lesions. On the other hand, the influence of MFi in the processing and quality of 3D printed models was not established. The aim of this research was to characterize such influence, comparing qualitatively images and models generated from the intensities of 1.5 and 3T. For this, a healthy individual, female, 25 years old and with no orthopedic antecedents or complaints compatible with patellar chondropathy was evaluated. The patient was submitted to MRI of the knee in equipment of 1.5 T (HDxT ‐ General Electric®) and 3T (MD750 ‐ General Electric®). Volumetric axial sequences were established from 3D T2 Cube FS and 3D Fiesta HR sequences for both intensities. The 3D Merge FS sequence, available exclusively in the 3T equipment, was also considered in the analyzes. The images were processed in InVesalius® and Magics® software for the construction of 3D models in a virtual environment. The influence of MFi was established considering the image processing and the quality achieved in the virtual and printed models. The results showed that all sequences, in both intensities, allowed the generation of the models. In contrast, the quality achieved was higher in models obtained by the 3D Merge FS sequence. It was concluded that the MFi influences the process of obtaining 3D models of patellar articular cartilage. Therefore, the use of higher MFi is recommended due to the availability of more efficient acquisition sequences, such as Merge FS.This abstract is from the Experimental Biology 2019 Meeting. There is no full text article associated with this abstract published in The FASEB Journal.
Introdução: Os Pecomas são tumores de células epitelióides, de origem mesenquimal, normalmente benignos e extremamente raros. São encontrados mais frequentemente no retroperitônio, em região abdominopélvica, no trato gastrointestinal e no trato ginecológico, podendo ser encontrada também em tecidos moles e ossos. Recentemente foram publicados aproximadamente 100 casos de Pecoma, e cerca de 30% desses são de origem uterina, sendo o corpo do útero a região mais acometida. Em sua grande maioria possuem comportamento benigno, sendo raro o acometimento de estruturas ou órgãos vizinhos. Relato do caso: Trata-se de uma paciente de 38 anos, que apresentava sangramento uterino persistente, volume uterino aumentado e anemia associada. O ultrassom transvaginal mostrava a presença de vários nódulos sugestivos de leiomiomas. Após tratamento cirúrgico com histerectomia abdominal total, o anatomopatológico confirmou a presença de miomatose uterina, neoplasia intraepitelial cervical grau III e Pecoma de colo uterino. O exame de imunohistoquímica confirmou o diagnóstico de Pecoma, através da positividade para HMB-45, no achado cirúrgico. Conclusão: Portanto, por haver um número pequeno de relatos e estudos sobre o diagnóstico e tratamento do Pecoma, é importante e relevante estudarmos mais sobre essa afecção para melhorar os níveis de evidências e conhecimento sobre tal doença.
A Gravidez Ectópica ocorre quando existe a implantação do blastocisto fora do endométrio. É considerada uma causa comum de morbidade e mortalidade, principalmente em mulheres no período reprodutivo. De todas as gestações ectópicas, a tubária é a mais frequente. A gravidez ectópica gemelar, por sua vez, é extremamente rara (1 a cada 20.000 casos) sendo ainda mais incomum quando apresenta os batimentos cardíacos fetais. Apresentamos o caso de uma paciente com gravidez ectópica tubária gemelar, com presença de batimentos cardíacos fetais e que cursou com quadro de abdome agudo hemorrágico, sendo necessário a realização de uma laparotomia exploradora de urgência e salpingectomia à direita.
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