[Radiation dose reduction using a non-linear image filter in MDCT].
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.
Nakashima
Junya
J
Department of Radiology, Showa University Fujigaoka Hospital.
Takahashi
Toshiyuki
T
Takahashi
Yoshimasa
Y
Imai
Yasuhiro
Y
Ishihara
Yotaro
Y
Kato
Kyoichi
K
Nakazawa
Yasuo
Y
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