This poster is published under an
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Keywords:
Image verification, Computer Applications-3D, CT, Radioprotection / Radiation dose
Authors:
Y. Shimomiya1, T. Shirasaka1, M. Tachibana2, H. Hamasaki1, K. Ogawa1, M. Namekata3, K. Kumagai2, Y. Nakamura1; 1Fukuoka, Fukuoka/JP, 2Hiroshima, Hiroshima/JP, 3Tokyo, Tokyo/JP
DOI:
10.1594/ecr2014/C-0949
Conclusion
In this study,
we determined that,
because there was no difference in the MTF,
spatial resolution is not influenced by FBP images processed using the TV method.
Based on the results of our evaluation of the NPS,
we determined that because high-frequency sections of images were reduced,
there was no change in the structure of the original image,
and therefore,
noise decreased.
Because there was no significant difference in low-contrast detectability and the raw data used by the CT device for processing is based on DICOM images instead of iterative approximation reconstruction,
detecting signals buried within noise presented difficulties even with the use of the TV method for processing.
However,
for points where detectability was not reduced,
we believe that there will be no data loss for the original image during processing even when the TV processing method is used.
By using the TV method for processing FBP images,
we were able to avoid causing changes in high-contrast sections of images and reduced noise.
This is a method of maintaining the condition of image sections with high CT values after creating volume rendering,
which makes it possible to reduce noise.
Accordingly,
we expect that the quality of volume rendering images will improve in conjunction with the use of the TV method in processing CT-Axial images.