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Avaliação de sinal-ruído em imagens mamográficas utilizando a técnica Unsharp Mask

Authors: Shimamoto, Ana Laura; Carneiro, Pedro Cunha; Patrocinio, Ana Claudia; Orpheu, Guilherme;

Avaliação de sinal-ruído em imagens mamográficas utilizando a técnica Unsharp Mask

Abstract

Breast cancer is considered a serious public health problem worldwide, not only for the number of growing cases diagnosed each year, but also for the financial investment that is required to address diagnostic and treatment issues. Studies have ensured that the quality of medical imaging significantly interferes with ensuring a reliable diagnosis, affecting the sharpness of each structure. In this research, we used mammographic images from two different databases, and quantified the contribution of medical image parameters Signal-to-Noise Ratio (SNR) e Peak Signal-to-Noise Ratio (PSNR) as contrast enhancers, using smoothing filters and sharpening masks, with their criteria (Radius, Amount, Threshold) varied within a predefined interval. As a result, for some mammograms, the applied technique was not satisfactorily efficient, promoting only small variations in the parameters used for the comparative purpose. It is hypothesized for this phenomenon, the ranges of variation of the criteria being considered too small, and the need to investigate other contrast and sharpness enhancing parameters to obtain a processed and high-quality medical image.

XII SIMPÓSIO DE ENGENHARIA BIOMÉDICA - IX SIMPÓSIO DE INSTRUMENTAÇÃO E IMAGENS MÉDICAS

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Keywords

Câncer de mama, mamografia, Unsharp Mask., Breast cancer, mammography, Unsharp Mask

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
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78
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Cancer Research