Tests and diagnosis

By Mayo Clinic Staff

For polycystic kidney disease, certain tests can detect the size and number of kidney cysts you have and evaluate the amount of healthy kidney tissue, including:

  • Ultrasound exam. During an ultrasound, a wand-like device called a transducer is placed on your body. It emits inaudible sound waves that are reflected back to the transducer — like sonar. A computer translates the reflected sound waves into images of your kidneys.
  • Computerized tomography (CT) scan. As you lie on a movable table, you're guided into a big doughnut-shaped device that projects very thin X-ray beams through your body. Your doctor is able to see cross-sectional images of your kidneys.
  • Magnetic resonance imaging (MRI) scan. As you lie inside a large cylinder, magnetic fields and radio waves generate cross-sectional views of your kidneys.
Jun. 14, 2014

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