Change in patient-reported confidence score measured by the statement "I feel confident discussing my radiology results with my healthcare provider" assessed before and after viewing the AI-generated video explanation. Scores range from 1 (Strongly Disagree) to 5 (Strongly Agree), where higher scores indicate greater confidence. The outcome is calculated as the difference between post-video and pre-video confidence scores, with positive values indicating improved confidence.

Change in patient-reported worry score measured by the statement "I am worried about misunderstanding my radiology findings" assessed before and after viewing the AI-generated video explanation. Scores range from 1 (Not worried) to 5 (Extremely worried), where lower scores indicate less worry. The outcome is calculated as the difference between post-video and pre-video worry scores, with negative values indicating reduced worry.

Patient-reported perceived usefulness score measured by the statement "Using the AI video explanation improves my understanding of my radiology findings" assessed after viewing the AI-generated video explanation. Scores range from 1 (Strongly Disagree) to 5 (Strongly Agree), where higher scores indicate greater perceived usefulness of the AI video explanation.

Patient-reported ease of use score measured by the statement "The AI video explanation is easy to follow and interact with" assessed after viewing the AI-generated video explanation. Scores range from 1 (Strongly Disagree) to 5 (Strongly Agree), where higher scores indicate greater perceived ease of use of the AI video explanation.

Patient-reported trust score measured by the statement "I trust the AI's explanation to accurately explain my radiology findings" assessed after viewing the AI-generated video explanation. Scores range from 1 (Strongly Disagree) to 5 (Strongly Agree), where higher scores indicate greater trust in the AI explanation's accuracy.

Patient-reported intention to use score measured by the statement "I would like to receive this type of AI-based explanation for future radiology reports" assessed after viewing the AI-generated video explanation. Scores range from 1 (Strongly Disagree) to 5 (Strongly Agree), where higher scores indicate greater intention to use AI explanations in the future.

Patient-reported overall experience score measured by the question "Overall, how was your experience with the video report?" assessed after viewing the AI-generated video explanation. Scores range from 1 (Poor) to 5 (Excellent), where higher scores indicate better overall experience with the AI video explanation.

Patient-reported recommendation likelihood score measured by the statement "I would recommend this type of video explanation to other people to understand their radiology findings" assessed after viewing the AI-generated video explanation. Scores range from 1 (Strongly Disagree) to 5 (Strongly Agree), where higher scores indicate greater likelihood to recommend the AI video explanation to others.

Change in patient knowledge measured by the question "Do you know which part of your body was described in the report?" assessed before and after viewing the AI-generated video explanation. Responses are Yes/No, where the outcome is calculated as the proportion of participants who gained knowledge (changed from "No" to "Yes") after viewing the video.

Change in participant's understanding of the significance of their radiology findings measured on a 5-point Likert scale (1=Not at all to 5=Very well), comparing pre-video to post-video scores

Total time in minutes spent viewing the AI-generated radiology explanation video. This metric assesses overall participant engagement duration with the video content.

Participant-reported helpful aspects measured by the question "What did you find helpful about the video report?" with multiple response options including: findings highlighted in images, avatar using easy-to-understand language, comparisons to normal studies, comparisons to older studies, use of 3D images, easier to understand than written report, and side-by-side comparisons. Responses are analyzed as frequencies and percentages for each component.