부산대학교 도서관

The purpose of this study was to evaluate the T1 relaxation times to distinguish between media with different contrast agent molarities (0.5 mmol/mL and 1.0 mmol/mL) for different magnetic field strengths (1.5 T and 3.0 T) in magnetic resonance imaging. Herein, we used the T1 mapping technique instead of signal intensities for evaluation. The T1 times were shorter for higher molarities at the same magnetic field strength (p = 0.043); however, there were no significant distinctions for the same molarity at different magnetic field strengths. The rate of change of the T1 duration for half the molarity of the phantom concentration was higher at low concentrations of the contrast agent. Therefore, the results indicate that higher concentrations of the contrast agent may not be necessary to obtain better imaging contrast.