论文信息 - High Resolution <formula formulatype="inline"><tex Notation="TeX">$^{13}$</tex></formula>C MRI With Hyperpolarized Urea: In Vivo <formula formulatype="inline"><tex Notation="TeX">$T_{2}$</tex></formula> Mapping and <formula formulatype="inline"> <tex Notation="TeX">$^{15}$</tex></formula>N Labeling