I was asked to have another cat scan on my stomach, will a mri do the same thing? will it? i am relucatant to put any more radiation into my body.

It depends: While MRI is very good for evaluating most abdominal organs, it is often not very good for evaluating the stomach and intestines. Because the MRI takes some time to acquire, there is usually some motion in the gut that makes the pictures blurry and hard to read. Depending on the question your doctor has, the benefits of a repeat ct scan may outweigh the risk of this small radiation dose.

Depends: This depends on the disease process. Mri as in mrcp is suitable for bile duct evaluation and certain liver and spleen conditions such as hemochromatosis and in some cases can evaluate the liver and pancreatic masses to better advantages. Mri however is more susceptible to motion and has poorer image resolution compared to ct.