Which applications, either for diagnostic purposes or for therapeutic purposes, do not involve ionizing radiation? Check all that apply.CT scanMRIultrasoundlaser surgeryradiopharmaceuticalsPET scan

MRI uses magnetic fields and radio waves, which are non-ionizing. Ultrasound uses sound waves, and laser surgery uses light; neither involves ionizing radiation. CT scans use ionizing X-rays, while radiopharmaceuticals and PET scans involve radioactive emissions, so those choices do not apply.

AI-written and checked against the verified answer.