Abstract #1535
T1 relaxation of the liver; Comparison of the continuous wave and stretched type adiabatic hyperbolic scant (HS) pulses for the assessment of liver function
Yukihisa Takayama 1 , Akihiro Nishie 2 , Yoshiki Asayama 2 , Kousei Ishigami 2 , Yasuhiro Ushijima 2 , Daisuke Okamoto 2 , Nobuhiro Fujita 2 , Koichiro Morita 2 , Tomoyuki Okuaki 3 , and Hiroshi Honda 2
1
Department of Radiology Informatics and
Network, Kyushu University, Graduate School of Medical
Sciences, Fukuoka, Fukuoka, Japan,
2
Department
of Clinical Radiology, Kyushu University, Graduate
School of Medical Sciences, Fukuoka, Japan,
3
Philips
Healthcare APAC, Tokyo, Japan
Image quality and diagnostic capability to assess liver
function of T1ρ map were compared among three different
methods: continuous wave pulse(CW), stretched type
adiabatic heperbolic scant 8(HS8) pulse with pulse
duration of 5ms(adiabatic-HS8-5) and adiabatic-HS8 pulse
with pulse duration of 10ms(adiabatic-HS8-10). There was
no significant difference in image quality scores
between adiabatic-HS8-5 and adiabatic-HS8-10, but both
showed significantly higher scores comparing with
CW-T1ρ(p<0.05). Regarding the assessment of liver
function, CW showed the highest correlation coefficient
between T1ρ relaxation and ICG-R15 among three methods.
Two adiabatic-HS8-5 pulses allowed generating
homogeneous T1ρ maps, but CW was more advantageous to
assess liver function.
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