title: [Radiation dose reduction using a non-linear image filter in MDCT].
abstract: The development of MDCT enabled various high-quality 3D imaging and optimized scan timing with contrast injection in a multi-phase dynamic study. Since radiation dose tends to increase to yield such high-quality images, we have to make an effort to reduce radiation dose. A non-linear image filter (Neuro 3D filter: N3D filter) has been developed in order to improve image noise. The purpose of this study was to evaluate the physical performance and effectiveness of this non-linear image filter using phantoms, and show how we can reduce radiation dose in clinical use of this filter. This N3D filter reduced radiation dose by about 50%, with minimum deterioration of spatial reduction in phantom and clinical studies. This filter shows great potential for clinical application.
authors.affiliation: Department of Radiology, Showa University Fujigaoka Hospital.
authors.forename: Junya
authors.initials: J
authors.lastname: Nakashima
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takahashi
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Imai
authors.forename: Yotaro
authors.initials: Y
authors.lastname: Ishihara
authors.forename: Kyoichi
authors.initials: K
authors.lastname: Kato
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Nakazawa
mesh_terms: D006801:Humans; D008099:Liver / Q000000981:diagnostic imaging; D008168:Lung / Q000000981:diagnostic imaging; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014567:Urography