Question

When using contrast media is indication, which type of scan would be used for a patient with an allergy to iodine?

1) CT scan
2) MRI scan
3) Ultrasound scan
4) X-ray

Answer 1

For a patient with an iodine allergy, an MRI scan or ultrasound scan would be used instead of a CT scan, as MRI and ultrasound do not require iodine-based contrast agents and do not use ionizing radiation.

Step-by-step explanation:

When using contrast media for medical imaging and an iodine allergy is a concern, a MRI scan would typically be the preferred choice. MRI uses a magnetic field and radio waves to create detailed images of the body's organs and tissues, without the use of ionizing radiation or iodine-based contrast agents. This makes it a safer alternative for patients with iodine allergies. Another option might be an ultrasound scan, which uses sound waves to produce images and also does not involve ionizing radiation or iodine. X-rays and CT scans typically use iodine-based contrast agents and ionizing radiation, which may not be suitable for patients with iodine allergies.