[Reduction of helical artifact using SmartHelical algorithm].
Stair-step artifact is a serious problem in reconstructed images of multiplanar reformation (MPR), surface rendering and maximum-intensity projection (MIP). We developed a new algorithm, SmartHelical Algorithm (SHA), to reduce helical artifacts. SmartHelical Algorithm reduced helical artifacts significantly with slight worsening of longitudinal resolution. Noise was reduced and SNR was increased. SHA reduced stair-step artifact in reconstructed images of MPR, surface rendering and MIP, and improved image quality.
Department of Radiology, Jichi Medical School and Hospital.
O
O
Sakai
Y
Y
Shen
H
H
Hu
F
F
Kimura
M
M
Furuse
D000328:Adult; D000465:Algorithms; D016477:Artifacts; D005147:Facial Bones / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*