as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
i heard about medical scans being able to detect cancer. can you explain how this works?
user
yes. medical scans can be used to detect cancer by detecting abnormal changes in tissues or organs. for example, ct scans or mri scans can be used to detect abnormal lesions which may be indicative of cancerous growth. additionally, positron emission tomography (pet) scans can be used to detect higher levels of metabolic activity in tissues that could be indicative of cancerous growth.
assistant