SENSOR COORDINATE CALIBRATION IN AN ULTRASOUND SYSTEM

摘要

Sensor coupled to the ultrasound probe provides position information related to an ultrasound imaging position in the object. A processor performs first registration between the medical image and the ultrasound image based on the anatomical feature in the ultrasound image and a medical image of the object acquired by imaging modality different from the ultrasound apparatus, obtains first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, performs second registration between the sensor and the medical image based on the position information and the first registration information, and obtains second registration information based on the second registration. A display may display a portion of the medical image corresponding to the ultrasound imaging position based on the second registration information. The medical image includes one of SPECT, PET, MR, PET-CT, and PET-MR image.

主权项

1. A medical imaging apparatus comprising:
an ultrasound apparatus including an ultrasound probe configured to transmit and receive an ultrasound signal to obtain an ultrasound image of an object; a sensor coupled to the ultrasound probe and configured to provide a position information related to an ultrasound imaging position in the object; and a processor configured to extract a certain anatomical feature from the ultrasound image and the certain anatomical feature from a medical image of the object acquired by an imaging modality different from the ultrasound apparatus, perform a first registration between the medical image and the ultrasound image based on the certain anatomical feature, obtain a first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, perform a second registration between the sensor and the medical image based on the position information and the first registration information, obtain a second registration information based on the second registration, and control a display to display a portion of the medical image, corresponding to the ultrasound imaging position based on the second registration information, wherein the medical image comprises one of a single-photon emission computed tomography (SPECT) image, a positron emission tomography (PET) image, a magnetic resonance (MR) image, a PET-computed tomography (CT) image, and a PET-MR image.