1. A method of in vivo imaging of a preselected portion of the lower abdomen of a patient, comprising: injecting the patient with a material including a high contrast material for X-ray imaging and a material for binding the high contrast material to a specific biological site if present in the preselected portion of the lower abdomen of the patient; and generating a CT image of the preselected portion of the lower abdomen of the patient so as to generate an image of the preselected portion of the lower abdomen of the patient and any of said high contrast material disposed therein.