Hepatobiliary, pancreatic, splenic and renal examination color ultrasound is better or CT is better, according to the purpose of the examination. Color ultrasound is better for simple physical examination, CT is better for more clearly determining the disease, and a combination of both is needed when necessary. Through the liver, gallbladder, pancreas, spleen and kidney color ultrasound, you can check the liver, gallbladder, pancreas, spleen and kidney for the presence of space-occupying lesions (e.g., cysts in the liver, kidney stones, etc.), and whether there is any inflammatory infection (e.g., cholecystitis, nephritis, hepatitis, etc.), which is more affordable and radiation-free. When ultrasound suggests that the liver, gallbladder, pancreas, spleen and kidneys are occupied, unevenly thickened, or other diseases are suspected, further CT examination can be performed. Because of the different working principles of the two, so can not be compared with each other, for different purposes of the examination can be used for different methods of examination. Some diseases require a combination of both, such as gallbladder stones (because some hidden stones do not show up in CT). The choice of which examination method to adopt should be made under the advice and guidance of the doctor.