medical specialty,
medicine the learned profession that is mastered by graduate training in a medical school and that is devoted to preventing or alleviating or curing diseases and injuries; "he studied medicine at Harvard"
echography,
sonography,
ultrasonography,
ultrasound using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs
positron emission tomography,
pet using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)