Apparatus and method for tracking feature's position in human body

A method for tracking position of a feature in a subject comprising the steps of:

• operating a CT scanner to generate and display CT images of a volume within the subject;
• operating said CT scanner to generate projection X-Ray images of said volume wherein said images are responsive to X-Ray emitted by two X-Ray sources displaced from each other;
• and
• generating and displaying stereoscopic images from said projection X-Ray images, wherein said stereoscopic images are spatially registered to said CT images.

A CT scanner for scanning a subject comprising:

• a gantry stator;
• at least one gantry rotor, mounted on said gantry stator capable of rotating about a scanned subject;
• a CT subsystem comprising:
• at least one CT X-Ray source mounted on said at least one rotor;
• at least one CT X-Ray detector array mounted on said at least one rotor;
• wherein said at least one CT X-Ray source and said at least one X-Ray detector are configured to rotate together about said scanned subject, and wherein said CT detector array is capable of receiving radiation emitted by said CT X-Ray source and attenuated by the subject to be scanned;
• and
• a first image processor capable of generating and displaying CT images of a volume within the subject;
• and
• a fluoroscopy subsystem comprising:
• at least a first and a second cone beam X-Ray sources displaced from each other mounted on said at least one rotor;
• a 2D detector mounted on said at least one rotor, wherein said at least a first and a second cone beam X-Ray sources and said 2D detector array are configured to rotate together about said scanned subject, and wherein said 2D detector is capable of receiving radiation emitted by said at least first and second X-Ray sources and attenuated by the subject to be scanned;
• and
• a second image processor capable of generating projection X-Ray images of said volume, wherein the images are responsive to X-Ray separately emitted by each of said at least first and second cone beam X-Ray sources;
• and
• a third image processor capable of generating and displaying fluoroscopic images composed of said projection X-Ray images, wherein said fluoroscopic images are spatially registered to said CT images.