"After controlling for patient group and time interval between imaging and surgery, the negative predictive value of 64-MDCT and MRI was higher than that of intraoperative ultrasound. In only eight cases was surgical management changed after intraoperative ultrasound."

Intraoperative Ultrasound of the Liver in Primary and Secondary Hepatic Malignancies: Comparison with Preoperative 1.5 –T MRI and 64-MDCT
Wagnetz U et al.
AJR 2011; 196:562-568

"For all 561 malignant lesions, the sensitivity of intraoperative ultrasound was 95.1%, compared with 96.8% for 64 MDCT and 94.4% for MRI; 64-MDCT was also more sensitive than intraoperative ultrasound in identifying positive liver segments. After controlling for patient group and time interval between imaging and surgery, the negative predictive value of 64-MDCT and MRI was higher than that of intraoperative ultrasound. In only eight cases was surgical management changed after intraoperative ultrasound."

Intraoperative Ultrasound of the Liver in Primary and Secondary Hepatic Malignancies: Comparison with Preoperative 1.5 –T MRI and 64-MDCT
Wagnetz U et al.
AJR 2011; 196:562-568

"For patients undergoing partial liver resection for hepatic malignancies, 64 MDCT and MRI have an equivalent or higher sensitivity in identifying hepatic segments with malignancy, and both 64-MDCT and MRI appear to have a higher predictive value for identifying disease free segments than does intraoperative ultrasound."

Intraoperative Ultrasound of the Liver in Primary and Secondary Hepatic Malignancies: Comparison with Preoperative 1.5 –T MRI and 64-MDCT
Wagnetz U et al.
AJR 2011; 196:562-568