[Retracted] Evaluation of Angiogenesis and Pathological Classification of Extrahepatic Cholangiocarcinoma by Dynamic MR Imaging for E-Healthcare

Table 5

Comparison of the presented technique with existing technique.

The ECC perfusion parameter	Existing technique (r value)	Presented technique (r value)
Ktrans (min^−1)	0.510	0.524
Kep (min^−1)	0.190	0.223
Ve	0.105	0.127