1. A method for associating coronary angiography image annotations with a SYNTAX score for assessment of coronary artery disease comprising: receiving and processing a plurality of angiogram videos from a coronary angiography study into a plurality of frames for each of the plurality of angiogram videos; selecting and displaying a key frame from the plurality of frames for each of the plurality of angiogram videos in a browsing interface; receiving a selection of one of the key frame from a user; displaying the angiogram video associated with the selected key frame in a video viewer interface; receiving a lesion annotation from the user for a frame of the angiogram video; based on receiving the lesion annotation, displaying a SYNTAX score questionnaire in the video viewer interface; based on receiving answers to the SYNTAX score questionnaire from the user, annotating the frame of the angiogram video with the answers to the SYNTAX score questionnaire from the user; and saving the answers to the SYNTAX score questionnaire with the annotated frame in a database.