An investigation of a CT noise reduction using a modified of wiener filtering-edge detection

C. Anam, T. Fujibuchi, T. Toyoda, N. Sato, F. Haryanto, R. Widita, I. Arif, G. Dougherty

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The aims of this study were to investigate the noise reduction in a CT image using a modified Wiener filtering-edge detection method. We modified the noise reduction algorithm of a combination of the Wiener filter and edge detection by addition of a dilation stage after edge detection. We then evaluated kernel size of the Wiener filter, threshold values in the edge detection, and size of structuring elements in the dilation process. Images of adult anthropomorphic and self-built wire phantoms were acquired by the new 4-row multislice CT Toshiba Alexion™. The images of the anthropomorphic phantom were used for a visual evaluation, while the images of the wire-phantom were used to obtain the spatial resolution and noise of the images. A Wiener filter-edge detection filter coupled with dilation, potentially reduced more CT noise. We found that the spatial resolution and noise of the filtered images were influenced by the size of the Wiener filter kernel, threshold of edge detection, and size of structuring element.

Original languageEnglish
Article number12022
JournalJournal of Physics: Conference Series
Volume1217
Issue number1
DOIs
Publication statusPublished - Jun 17 2019
Event8th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application, ISNPINSA 2018 - Semarang, Central Java, Indonesia
Duration: Sep 26 2018 → …

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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