The measurement of temperature variation along the surface of the body, provided by digital infra... more The measurement of temperature variation along the surface of the body, provided by digital infrared thermal imaging (DITI), is becoming a valuable auxiliary tool for the early detection of many diseases in medicine. However, DITI is essentially a 2-D technique and its image does not provide useful anatomical information associated with it. However, multimodal image registration and fusion may overcome
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014
Three-dimensional medical image reconstruction using different images modalities require registra... more Three-dimensional medical image reconstruction using different images modalities require registration techniques that are, in general, based on the stacking of 2D MRI/CT images slices. In this way, the integration of two different imaging modalities: anatomical (MRI/CT) and physiological information (infrared image), to generate a 3D thermal model, is a new methodology still under development. This paper presents a 3D THERMO interface that provides flexibility for the 3D visualization: it incorporates the DICOM parameters; different color scale palettes at the final 3D model; 3D visualization at different planes of sections; and a filtering option that provides better image visualization. To summarize, the 3D thermographc medical image visualization provides a realistic and precise medical tool. The merging of two different imaging modalities allows better quality and more fidelity, especially for medical applications in which the temperature changes are clinically significant.
RESUMO: As imagens digitais geram uma grande quantidade de dados o que torna evidente a necessida... more RESUMO: As imagens digitais geram uma grande quantidade de dados o que torna evidente a necessidade de se utilizar alguma técnica de compressão com objetivo de reduzir o tamanho do arquivo, facilitando assim o armazenamento e a transmissão. Os métodos que atingem altas taxas de compressão geralmente o fazem através de remoção da redundância e de detalhes poucos perceptíveis na visualização, o que implica em perda de informação. Imagens médicas, de uma maneira em geral, não devem sofrer perdas no processo de compressão. A compressão de imagem com wavelets tem mostrado bons resultados em estudos recentes. Neste trabalho foi utilizada a transformada wavelet de inteiros reversível que permite realizar a compressão sem perdas. Alguns filtros wavelets foram avaliados e comparados com outras técnicas de compressão sem perdas. PALAVRAS-CHAVES: compressão, senograma, tomografia, wavelet, lossless (compressão sem perda) INTRODUÇÃO A utilização da tomografia computadorizada (Comput(eriz)ed Tom...
In this paper we apply reversible integer wavelet transform to lossless compression of computeriz... more In this paper we apply reversible integer wavelet transform to lossless compression of computerized tomography projections (sinograms). Lossy image compression methods can achieve high compression ratios, but sinograms should not loose information during compression process to not affect the image reconstruction
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014
Three-dimensional medical image reconstruction using different images modalities require registra... more Three-dimensional medical image reconstruction using different images modalities require registration techniques that are, in general, based on the stacking of 2D MRI/CT images slices. In this way, the integration of two different imaging modalities: anatomical (MRI/CT) and physiological information (infrared image), to generate a 3D thermal model, is a new methodology still under development. This paper presents a 3D THERMO interface that provides flexibility for the 3D visualization: it incorporates the DICOM parameters; different color scale palettes at the final 3D model; 3D visualization at different planes of sections; and a filtering option that provides better image visualization. To summarize, the 3D thermographc medical image visualization provides a realistic and precise medical tool. The merging of two different imaging modalities allows better quality and more fidelity, especially for medical applications in which the temperature changes are clinically significant.
The measurement of temperature variation along the surface of the body, provided by digital infra... more The measurement of temperature variation along the surface of the body, provided by digital infrared thermal imaging (DITI), is becoming a valuable auxiliary tool for the early detection of many diseases in medicine. However, DITI is essentially a 2-D technique and its image does not provide useful anatomical information associated with it. However, multimodal image registration and fusion may overcome
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014
Three-dimensional medical image reconstruction using different images modalities require registra... more Three-dimensional medical image reconstruction using different images modalities require registration techniques that are, in general, based on the stacking of 2D MRI/CT images slices. In this way, the integration of two different imaging modalities: anatomical (MRI/CT) and physiological information (infrared image), to generate a 3D thermal model, is a new methodology still under development. This paper presents a 3D THERMO interface that provides flexibility for the 3D visualization: it incorporates the DICOM parameters; different color scale palettes at the final 3D model; 3D visualization at different planes of sections; and a filtering option that provides better image visualization. To summarize, the 3D thermographc medical image visualization provides a realistic and precise medical tool. The merging of two different imaging modalities allows better quality and more fidelity, especially for medical applications in which the temperature changes are clinically significant.
RESUMO: As imagens digitais geram uma grande quantidade de dados o que torna evidente a necessida... more RESUMO: As imagens digitais geram uma grande quantidade de dados o que torna evidente a necessidade de se utilizar alguma técnica de compressão com objetivo de reduzir o tamanho do arquivo, facilitando assim o armazenamento e a transmissão. Os métodos que atingem altas taxas de compressão geralmente o fazem através de remoção da redundância e de detalhes poucos perceptíveis na visualização, o que implica em perda de informação. Imagens médicas, de uma maneira em geral, não devem sofrer perdas no processo de compressão. A compressão de imagem com wavelets tem mostrado bons resultados em estudos recentes. Neste trabalho foi utilizada a transformada wavelet de inteiros reversível que permite realizar a compressão sem perdas. Alguns filtros wavelets foram avaliados e comparados com outras técnicas de compressão sem perdas. PALAVRAS-CHAVES: compressão, senograma, tomografia, wavelet, lossless (compressão sem perda) INTRODUÇÃO A utilização da tomografia computadorizada (Comput(eriz)ed Tom...
In this paper we apply reversible integer wavelet transform to lossless compression of computeriz... more In this paper we apply reversible integer wavelet transform to lossless compression of computerized tomography projections (sinograms). Lossy image compression methods can achieve high compression ratios, but sinograms should not loose information during compression process to not affect the image reconstruction
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014
Three-dimensional medical image reconstruction using different images modalities require registra... more Three-dimensional medical image reconstruction using different images modalities require registration techniques that are, in general, based on the stacking of 2D MRI/CT images slices. In this way, the integration of two different imaging modalities: anatomical (MRI/CT) and physiological information (infrared image), to generate a 3D thermal model, is a new methodology still under development. This paper presents a 3D THERMO interface that provides flexibility for the 3D visualization: it incorporates the DICOM parameters; different color scale palettes at the final 3D model; 3D visualization at different planes of sections; and a filtering option that provides better image visualization. To summarize, the 3D thermographc medical image visualization provides a realistic and precise medical tool. The merging of two different imaging modalities allows better quality and more fidelity, especially for medical applications in which the temperature changes are clinically significant.
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