SYSTEM AND METHODS FOR PROCESSING IMAGES TO MEASURE COLLIMATOR JAW AND COLLIMATOR PERFORMANCE

摘要

Systems and methods are proposed for accurate and efficient automatic measurement of jaw and leaf positioning in multi-leaf collimator imaging systems. Specifically, the method enables the automated and objective processing of images to determine characteristics of collimator jaws and MLC leaves. These novel techniques enable verification of collimator component positioning to ensure accurate beam modulation for radiation application procedures.

主权项

1. A method for image processing for jaw positioning, the method comprising:
a. receiving image data corresponding to an image generated by an imaging system comprising a plurality of jaws, a detector, and a radiation source; b. calculating an expected position of an edge of a first jaw of the plurality of jaws based on the image data; c. deriving a minimum position and a maximum position based on the expected position for the edge of the first jaw; d. verifying an availability of the minimum and maximum positions; e. interpolating a minimum pixel value based on the minimum position and a maximum pixel value based on the maximum position; f. generating a target pixel value based on an average pixel value of the minimum pixel value and the maximum pixel value; and g. determining a target position based on the target pixel value.