Computer Automated Quantification of Respiratory Motion in a Fluoroscopic Movie

Abstract

Organ motion uncertainty associated with respiration is a major factor affecting radiation therapy in the thorax and abdominal regions. A number of approaches have been developed to characterize and reduce this uncertainty [1]. These approaches share a common requirement: The need to measure internal anatomic motion in real time. Although quantitative measurements through fluoroscopic observation is often used in a research setting, the time and effort associated with such measurements precludes their clinical use on a routine basis. The development of a computer automated tool which would quantify fluoroscopic respiratory motion could greatly increase confidence in the these new treatment mechanisms.