Method and apparatus for performing registration of medical images

An apparatus for performing registration of medical images, comprising:

• a coordinate conversion device configured to map a virtual coordinate system used by a first medical apparatus and a virtual coordinate system used by a second medical apparatus to each other and to detect a position of a probe of the first medical apparatus in the virtual coordinate system used by the second medical apparatus based on a result of the mapping;
• a volume image determination device configured to determine a volume image corresponding to the detected position from a 3D medical image that is previously captured;
• and
• an image output device configured to extract from the determined volume image a cross-sectional image corresponding to a real-time medical image captured by the first medical apparatus that changes according to a patient's physical movement.

A medical image registration system, comprising:

• a pre-treatment medical imagery apparatus configured to generate a set of pre-treatment medical images of a volume of interest of a patient;
• a real-time medical imagery apparatus configured to generate a treatment medical image in real-time of a volume of interest of the patient;
• and
• a medical image registration apparatus configured to perform registration between the set of pre-treatment medical images and the treatment medical image.