There are a wide variety of medical imaging tests available today, including CR, DR, DSA, CT, MRI, ultrasound, nuclear medicine, etc. Some of these imaging tests can cause varying degrees of damage to the body, plus, their cost can vary from high to low. Therefore, it is quite necessary to avoid unnecessary medical imaging examinations, which are beneficial both for the body and for the family economy. Careful preparation before the examination Careful preparation before the examination is a prerequisite to avoid repeated examinations, therefore, it is very necessary for you to consult about the examination before you undergo medical imaging examinations. Usually, for radiographic examinations of the extremities and chest walk to do without much preparation. In contrast, for patients with a proposed diagnosis of urinary stones who intend to have an abdominal plain or intravenous pyelogram, it is necessary to prepare the bowel the night before and perform the examination without eating or drinking the next day. The same is true for barium enemas. For upper gastrointestinal barium meal and digital subtraction angiography (DSA for short), fasting is sufficient. Once a patient has had a barium meal, he or she should not proceed to a lumbar spine or abdominal plain film, or an abdominal CT examination to prevent barium from blocking the lesion and producing artifacts. If you go to the nuclear medicine department for a PET/CT examination, not only are you not allowed to eat or drink, but you also have to test your blood sugar, and you can only perform this nearly 10,000 yuan examination if your blood sugar is under control. On the contrary, before doing abdominal CT examination, it must be done regularly and quantitatively according to the doctor’s request, after taking 1% contrast agent orally, and the purpose is to make each anatomy fully displayed for the diagnosing physician to identify. If CT is used for coronary imaging, the heart rate should also be controlled to about 65 times and the heart rate should be flush so that the coronary arteries made will be reliable. When women undergo gynecological examination with ultrasound, they must hold their urine in order to help the doctor get the correct judgment. In addition to some of the above requirements, is to remove all metal clasps, zippers, necklaces, jade pendants, bras, as well as plasters, paints, etc. in the examination area, that is, before doing the female pelvic magnetic resonance examination, also have to remove the birth control ring before the examination, to avoid artifacts masking the condition, as well as causing its displacement or burns. Actively cooperate with the doctor during medical imaging examinations, you must listen to the doctor’s call, especially in the grasp of exhalation and inhalation. During a chest x-ray, the doctor asks you to inhale, the purpose of which is to fill the lungs, and then asks you to hold your breath, in order to reduce the blurred artifacts produced by the movement of the lungs due to breathing. Likewise, when doing an abdominal plain film, the same is true. In a CT or MRI of the chest or abdomen, this is not only to reduce motion artifacts, but also to prevent the scan from being discontinuous due to your breathing, which may cause a missed diagnosis. When performing the last loose pressure film of the urinary tract, wait patiently for the doctor’s instructions and hold your breath when the doctor sees the contrast running to a certain area, you have to respond immediately to avoid missing a valuable peristaltic wave, and the same goes for a barium meal of the digestive tract. When doing digital subtraction angiography, it becomes quite important to hold your breath, as it depends on the success of the angiography. Likewise, scanning after intravenous contrast injection in CT and MRI is not allowed to breathe, especially in CT or MRI angiography, once breathing will produce step artifacts, which will affect the reliability of diagnosis. When doing a barium meal examination of the digestive tract, the doctor asks you to turn the body position not too violently, you that flash, the action is too fast, so that the doctor did not see anything. Especially when the doctor asks you to swallow a mouthful of barium in your mouth, you can swallow only when you are told to swallow, and during the process of swallowing, your body should not move so that the doctor can not capture the process of barium running, especially the first mouthful of barium is crucial to the diagnosis. Similarly, there is also the examination of heart three films, must cooperate well with the doctor, and strive for a one-time success. Therefore, when you are planning to visit a hospital, you can find out through your friends and family which hospital in your area will be more effective in treating your disease, and also inquire whether conservative treatment, surgical treatment, minimally invasive interventional treatment, or radiation treatment will be more effective. Once you determine the treatment method used, and even which hospital, you can then go to that hospital for the relevant medical imaging tests. This is because, each hospital doctor have their own experience, he will be according to their own professional habits that which examination can be done, which examination can not be done; at the same time, because he has done so long in their own hospital, but also has long adapted to their own hospital imaging department examination methods, plus look at their own film, in line with their own treatment ideas, and even will migrate Mohua to their own unit generated imaging The information has a high degree of trust. In view of this, there is no need for you to go to other hospitals for examination. Otherwise, you will have to go backwards and have a new medical imaging examination. Likewise, after you are discharged from the hospital, you may be asked to have your imaging reviewed at intervals, and I would recommend that you go back to the same medical imaging department for a review. Because there is also a problem with the method of examination or habit, the results of the examination at the same hospital are more comparable than the results of the two previous examinations. Otherwise, when you go to another hospital, the photos are not comparable, which will cause problems for the design of the next treatment plan. Grasp the timing of examination As we all know, any disease has a process of occurrence and development. For example, if you have a cough with blood in your sputum recently, once you take a chest X-ray and find a lump, the doctor considers lung cancer as a high possibility, and then you have to do CT further examination immediately afterwards. At this time, you and your family will have to seriously consider the previous questions in addition to discussing which treatment would be better to use, which involves the issue of family members signing a chemical pledge. If you hesitate and make up your mind to do the surgery only after half a month, the result will definitely lead to another CT examination before the surgery to ensure that the surgery is not a big deal. After the surgery, a medical imaging test must be performed for comparison and to determine what the results of the treatment are. After being discharged from the hospital, you have to follow the doctor’s orders for a review. In the early stage, the interval may be shorter, for example: three months, six months. Of course, this depends on the degree of benignity and malignancy of the lesion, but as the patient survives longer, and if the patient does not have any clinical symptoms, then it will be changed to annual review. Patients who are in good condition may undergo CT review, and for those who are not in good financial condition, digital plethysmography may be used instead. In addition, sometimes female patients have to consider avoiding their menstrual period. Selective examination according to the condition There are many kinds of medical imaging examinations, which have their own characteristics and advantages, but also have mutual complementarity and permeability, so that the strengths and weaknesses can be used for you as much as possible. This is not only to listen to the doctor’s words, but also to listen to the doctor’s voice, and even, you can also side step from multiple angles, if necessary, you can specifically consult with the medical imaging experts, on your disease need to do which test is more suitable. Usually, for the bones of the extremities, radiography is sufficient. Cranial CT is preferred for head trauma. For nodular lesions in the chest, or diffuse disease, a CT scan of the chest may be performed. For the differential diagnosis of hepatocellular carcinoma, hemangioma, and abscess, magnetic resonance imaging can be performed. For patients with abdominal trauma, abdominal ultrasound examinations of the liver, gallbladder, pancreas, spleen, and kidney are largely done, as well as for ectopic pregnancy. MRI may be considered for the spinal cord, intervertebral discs, knee meniscus, and soft tissues. However, when it comes to calcification, CT examination is preferable. If the possibility of systemic tumor metastasis is considered, nuclear medicine examination may be considered appropriate, and the same is true for myocardial ischemia, to look at its perfusion. Combination of gold standard examination and screening examination Any examination has the problem of reliability, which is usually called “gold standard”, for example, the examination of blood vessels by digital subtraction angiography is a gold standard, but it is costly and especially invasive, and sometimes it can even bring some risks. If you plan to do this examination, it is better to plan to do the treatment at the same time, such as: performing interventional embolization, interventional dilatation, interventional chemotherapy, etc. In this case, it is no longer practical to do any CT angiography, magnetic resonance angiography, or even their simulation endoscopy. Conversely, these non-invasive examinations can be considered if they are used as a screening test or because the patient is too old, critical, emergency, or seriously ill to bear the above risks anymore. Keep the imaging data All the above medical imaging data, especially the photos, you need to keep well for future review and comparison. It is even possible to reduce the number of unnecessary tests or alternate between high and low grade imaging because of the availability of these medical imaging materials. Of course, perhaps with it, the relevant imaging may no longer be needed at all. Therefore, you have to arrange the examinations according to their chronological order from back to front, put the same flat scan and enhancement together, and put all medical imaging information in categories, such as: radiographs, CT, MRI, ultrasound, and nuclear medicine. This important information can be used to determine for you whether you can proceed to phase II treatment or whether it would be more appropriate to change to another treatment method.