One click 3D ultrasound to MR registration

It is necessary to use an ultrasound imaging devices for Radio Frequency Ablation (RFA) of cancers or biopsy on liver, prostate, thyroid, and so on. However, it is very hard to discriminate a small tumor and its surrounding tissues when the tumor has less than a diameter of 1cm. Thus physician refers previously acquired diagnostic MR or CT images during those procedures in common. Furthermore, some medical devices manufacturing companies have released a ultrasound imaging device with fusion imaging technologies which can simultaneously display the same images together the live ultrasound image with the same patient´s MR or CT. However, they needs many manual inputs. It has manually registered the coordinates of both MR and ultrasound as the physician needs to manually specify several corresponding points on both MR images and US images. In this paper, we introduced fusion imaging system via just one-click interaction for liver MR to ultrasound image which is the majority of the RFA or biopsy.