Table 1. Definition of image fusion technique.

Image fusion technique	Definition	Reported benefits	Reported negatives
Cognitive (visually estimated) fusion	The operator forms a visual link between the MRI images and the real time ultrasound pictures then targeting the suspected areas	Low cost	Very operator-dependent
Software assisted fusion	The MRI images are uploaded and registered to the real time ultrasound by a software. Using this combined picture, a target area requiring biopsy is projected	High costs	Moderately operator dependent
In-bore MRI biopsy	Fusion between prior MRI images and a real time MRI during the procedure	Specific material for MR environment, cost and time intensive	Little operator dependent