Forward-projected Model-based Iterative Reconstruction SoluTion in Temporal Bone Computed Tomography: A Comparison Study of All Reconstruction Modes
| Autor: | So Tsushima, Mariko Kurokawa, Akira Baba, Kenji Ino, Keisuke Nyunoya, Ryo Kurokawa, Eriko Maeda, Jiro Sato, Rumiko Torigoe, Haruomi Yamaguchi, Moto Nakaya, Yukiko Usui, Osamu Abe, Takeru Q. Suyama, Tomoya Tanishima, Yoshiaki Ota, Kenta Nakata, Akifumi Hagiwara, Wataru Gonoi |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male genetic structures Iterative reconstruction 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Optical transfer function Temporal bone Image Processing Computer-Assisted Medicine Humans Radiology Nuclear Medicine and imaging Image resolution Aged Retrospective Studies business.industry Temporal Bone Middle Aged Noise medicine.anatomical_structure Osseous spiral lamina Female Tomography Spatial frequency business Tomography X-Ray Computed 030217 neurology & neurosurgery Algorithms Biomedical engineering |
| Zdroj: | Journal of computer assisted tomography. 45(2) |
| ISSN: | 1532-3145 |
| Popis: | Objective Identify appropriate reconstruction modes of Forward-projected model-based Iterative Reconstruction SoluTion (FIRST) in temporal bone computed tomography (CT) and investigate the contribution of spatial resolution and noise to the visual assessment. Methods Sixteen temporal bone CT images were reconstructed. Two blinded radiologists assessed 8 anatomical structures and classified the visual assessment. These visual scores were compared across reconstruction modes among each anatomical structure. Visual scores and contrast-to-noise ratio, noise power spectrum (NPS) at low (NPSLow) and high (NPSHigh) spatial frequencies, and 50% modulation transfer function relationships were evaluated. Results Visual scores differed significantly for the stapedius muscle and osseous spiral lamina, with CARDIAC SHARP, BONE, and LUNG modes for the osseous spiral lamina scoring highest. Visual scores significantly positively correlated with NPSLow, NPSHigh, and 50% modulation transfer function but negatively with contrast-to-noise ratio. Conclusions Modes providing higher spatial resolution and lower noise reduction showed an improved visual assessment of CT images reconstructed with FIRST. |
| Databáze: | OpenAIRE |
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