X-rays, CT, MRI, a sentence to let you understand which tests to do! Traumatic bone: coarse look at the X-ray film, look at the CT, MRI can not see; cervical spine, lumbar spine: the best MRI, the second choice CT; brain, spinal cord: brain infarction to see MRI, bleeding to see CT, the rest including brain tumors mostly MRI best; chest: a general understanding of the X-ray film, detailed analysis of the choice of CT, look at the lungs do not choose MRI, heart the following single; abdomen, pelvis: in addition to the intestines, organs in general ultrasound can be, CT, MRI have their own advantages; heart: high-risk chest pain patients to exclude coronary heart disease can choose CT, look at the heart itself with ultrasound can be, MRI better. Heart: CT can be used to rule out coronary heart disease in patients with high-risk chest pain, and ultrasound can be used to look at the heart itself, while MRI is better. How to choose these tests? 1, trauma bone various trauma, suspected of injury to the bone, X-ray film quickly and easily, should be the first choice; and further more detailed observation, you can choose CT. ultrasound, MRI for the bone cortex medulla, etc. not very clear, far less effective than X-ray-based X-ray film and CT. 2, cervical spine, lumbar spine, muscle intervertebral disc disease (cervical spondylosis, lumbar disc herniation, etc.), the need to observe the intervertebral disc and the corresponding nerve roots MRI is also preferred for the examination of joints, muscles, and fatty tissues. For brain and spinal cord diseases, MRI has the strongest soft tissue resolution and can directly obtain clear three-dimensional images, using different sequences to obtain more comprehensive diagnostic information. However, for hemorrhagic stroke (e.g., “cerebral hemorrhage”), CT examination can be performed under emergency conditions to detect abnormalities at the earliest and obtain early diagnosis. In the case of ischemic stroke (cerebral infarction), MRI can detect abnormalities earlier than CT, so early CT without detecting abnormalities often cannot exclude cerebral infarction. 4, chest diseases X-ray chest film can roughly examine the heart, aorta, lungs, pleura, ribs, etc., and can see, for example, enlarged heart shadow, increased lung texture, lung calcification points, aortic node calcification, etc.. Compared with X-ray, CT chest examination shows a clearer structure, and the sensitivity of detecting and accuracy of showing lesions in the chest are better than conventional X-ray chest film, especially for the confirmation of early lung cancer diagnosis chest CT has decisive significance. High-resolution CT further increases the resolution of lung observation, which is significant for certain diseases (e.g. interstitial lung disease). However, the radiation dose of CT examination is significantly higher than that of X-rays, and MRI has very limited application for the diagnosis of lung diseases. 5, abdominal and pelvic diseases The diagnosis of gallbladder diseases relies heavily on ultrasound, which is superior to CT and MRI. this is mainly because, the abdominal organs are affected by breathing and have greater motion, which affects CT and MRI imaging, while ultrasound is not affected by this. The accuracy of ultrasound for the liver, spleen, pancreas, kidney, pelvic organs, etc. is higher than that of CT and MRI with experienced ultrasonographers, but ultrasound is greatly disturbed by gas, so the accuracy of ultrasound diagnosis is greatly reduced for areas containing more gas, such as the intestine. ① Different parts, different observation focus, the choice of imaging methods are different ② Not the more expensive test, the more suitable for you