Does body weight skew test results for CT, MRI or X-ray?
Sandberg: There is a significant association between body weight, body mass and image quality. Technologists performing the diagnostic procedures use protocols that adjust for these factors. Overall, the desire is to obtain the best-quality image with the minimal exposure to radiation. With radiation-based tests, such as CT and X-ray, shielding is used to minimize exposure to areas not under study. Morbidly obese patients provide the most challenge. Weight restrictions and equipment size limit access to some tests for those 350 pounds and over. Q: Is ultrasound the safest type of testing available to women who are pregnant – whose unborn children are feared to be at certain risk? Sandberg: Ultrasound does not involve radiation or electromagnetic energy, so it can be considered safer for use in pregnancy. However, ultrasound cannot diagnose all pathologies or conditions. Therefore, at times, CT, MRI and X-ray are indicated during pregnancy. Q: Regarding mammography: Should there be any
