is a mri a test or imaging
Imaging tests take pictures of places inside the body to see if there is a tumor or infection present. There are various ways to capture images of the inside of a patientâs body, from using sound waves to x-rays to radioactive dyes. These tests do not generally cause pain.Imaging tests include x-rays, CT scans, MRIs, echocardiograms, PET scans and ultrasound.While many imaging tests use some form of radiation, it is hard to estimate the doses for different exams. For more information about radiation safety in pediatric imaging, go to imagegently.org.maging tests take pictures of places inside the body to see if there is a tumor or infection present. There are various ways to capture images of the inside of a patientâs body, from using sound waves to x-rays to radioactive dyes. These tests do not generally cause pain.