|
KMID : 0384620090200040244
|
|
Korean Journal of Medical Physics
2009 Volume.20 No. 4 p.244 ~ p.252
|
|
|
A Study on Compensation for Imaging Qualities Having Artifact with the Change of the Center Frequency Adjustment and Transmission Gain Values at 1.5 Tesla MRI
|
|
Lee Jae-Seung
Lee Sun-Yeob
Goo Eun-Hoe
Park Cheol-Soo
Lee Han-Joo
|
|
|
Abstract
|
|
|
|
The purpose of this study is to compensate for susceptibility and a ferromagnetic body artifact using CFA and TGV on MR Imaging. A total of 30 patients (15 men and 15 women, mean age: 45 years) were performed on head and neck diseases. MR Unit used a 1.5T superconducting magnet (GE medical system, High Density). This study have investigated by changing with CFA and TGV (70, 90, 110, 130, 150) searching for compensation values about susceptibility and a ferromagnetic body artifact in 60 kg standards of body weight (p<0.05). As a quality results, Image qualities were obtained at different score from CFA and TGV (70, 90, 110, 130, , , , , , , , , , p<0.05). Absolute CNRs (TG, CNRpre, CNRpost) were acquired with (70:, , 90:, , 110:, , 130:, , 150: , , p<0.05). In conclusions, this study could be compensated for metal and flow artifacts surrounding the tissues having artifact by changing CFA and TGV.
|
|
|
KEYWORD
|
|
|
Transmission Gain Values, Center Frequency Adjustment, Artifacts, Absolute contrast to noise ratio
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|