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3-dimensional adaptive raw-data filter: evaluation in low dose chest multidetector-row computed tomography.

Takeshi Kubo·Mizuki Nishino·Aya Kino·Norihiko Yoshimura·Pei-Jan Paul Lin·Masaya Takahashi·Vassilios Raptopoulos·Hiroto Hatabu
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Abstract

OBJECTIVES: To evaluate a 3-dimensional adaptive raw-data filter in reducing streak artifacts in low dose chest computed tomographic (CT) images. METHODS: Fourteen adult patients who underwent low dose chest CT examination (parameters: 25 or 50 mAs, 120 kV) on 64-detector CTscanner were included in this study. We prepared 2 sets of contiguous 5-mm thick images by reconstruction with and without 3-dimensional adaptive raw-data filter (filter-processed and unprocessed images). Streak artifacts and visualization of peripheral vessels in both filter-processed and unprocessed images were evaluated using a 5-point scale. Upper, middle, and lower thorax were evaluated separately. RESULTS: The difference in artifact severity was statistically significant in upper and lower thorax (P = 0.002 and 0.03, respectively), whereas it was not significant in middle thorax (P = 0.13). The difference in the visibility of peripheral pulmonary vessels was not statistically significant in all anatomical regions. CONCLUSIONS: The 3-dimensional adaptive raw-data filter reduced streak artifacts in low dose chest CT in upper and lower thorax.

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AdultAgedAged, 80 and overArtifactsFemaleHumansImaging, Three-DimensionalMaleMiddle AgedRadiation DosageRadiography, ThoracicTomography, X-Ray ComputedComparative StudyJournal Article

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Takeshi Kubo, Mizuki Nishino, Aya Kino, Norihiko Yoshimura, Pei-Jan Paul Lin, Masaya Takahashi, Vassilios Raptopoulos, Hiroto Hatabu. 3-dimensional adaptive raw-data filter: evaluation in low dose chest multidetector-row computed tomography.. https://doi.org/10.1097/01.rct.0000221951.60393.64

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