CT scanning, or computed tomography, is a revolutionary technique in the field of modern medicine. It uses X-ray and computer technology to show the internal structure of the human body in the form of tomographic images, which provides doctors with a more accurate basis for diagnosis.
CT examination has a wide range of applications in many medical fields, such as neurology, oncology, cardiovascular, etc. During a CT scan, the patient is usually asked to lie still on the table.
The CT scanner rotates around the patient and emits X-rays that penetrate the patient's body. After passing through the body, these X-rays are received by detectors and converted into digital signals, which are then processed by computers to produce tomographic images. These images can clearly show the internal structure of the human body, helping doctors to spot lesions and determine the condition.
As an advanced medical imaging technology, CT examination provides strong support for medical diagnosis. With the continuous progress of science and technology, CT examination technology will also continue to improve and contribute more to the cause of human health.
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01
How harmful is a CT done?
The X-rays used in CT examinations are a type of ionizing radiation that has a damaging effect on human cells. However, fortunately, the radiation dose of the CT examination equipment used in medicine has been strictly controlled within safe limits.
The radiation dose of a routine CT scan is usually much lower than the level that can cause significant harm to the human body. Therefore, in general, the damage to the human body from a CT scan is relatively small.
However, despite this, we still cannot ignore the potential risks of radiation to the human body. In particular, certain special populations, such as pregnant women, children, the elderly, and people with certain medical conditions, may be at higher risk when undergoing CT scans.
In addition, frequent CT scans or multiple high doses of radiation in a short period of time may also increase the risk of radiation damage.
Therefore, when performing a CT scan, we should follow the doctor's advice and guidance as much as possible to ensure the necessity of the examination and minimize unnecessary radiation exposure.
At the same time, doctors should also reasonably control the radiation dose of CT examination according to the specific situation of the patient, so as to protect the patient's health to the greatest extent.
02
If you do a CT CT, is there any radiation? The doctor told the truth
First of all, let's be clear that any medical examination that involves radiation, including CT, has some amount of radiation. However, the key to whether this radiation is harmful to the human body depends on the size of the dose.
The X-rays used in CT scans, although they have a certain ionizing effect, their doses are well below the threshold for harming the human body. In addition, with the continuous advancement of medical technology, the radiation dose of CT equipment is gradually decreasing, ensuring that it is within a safe range.
Secondly, the radiation dose of CT examination is related to many factors such as the examination site, scanning parameters, and equipment model. In general, the radiation dose of head CT is lower than that of abdominal CT, while the dose of CT in children is adjusted according to age and weight.
In addition, modern CT equipment often uses dose-modulating technology, which can automatically adjust the radiation dose according to the patient's specific situation, thereby minimizing the impact of radiation on the patient.
Finally, although there is a certain amount of radiation in CT examination, its value in disease diagnosis is irreplaceable. Through CT scanning, doctors can understand the patient's condition more accurately and formulate a more appropriate treatment plan for the patient.
Therefore, patients should actively cooperate with their doctor for CT scan if necessary, while following their doctor's advice to minimize unnecessary radiation exposure.
03
You should know the precautions of CT examination
First of all, the CT scan is performed by X-rays, so patients should be informed of the risks and necessity of radiation before the examination. While the radiation dose of CT is relatively low, long-term exposure or overuse may increase the risk of health problems such as cancer.
Therefore, the physician should carefully assess the patient's condition, ensure that CT scans are necessary, and minimize the number of examinations and radiation dose as much as possible.
Secondly, patients need to be well prepared before the CT scan. In general, patients need to wear comfortable clothing and remove all metal objects from their body, such as earrings, necklaces, watches, etc., to avoid interfering with the image.
If the patient has a special health condition or needs special care, such as diabetes, heart disease, etc., the doctor should be informed in advance so that the doctor can develop a personalized examination plan.
During the examination, the patient needs to remain calm and not move or speak to avoid affecting the clarity of the image. If a patient needs to hold a certain position for an extended period of time, the doctor can provide the necessary support and comfort to ensure the patient's comfort and safety.
Finally, after the CT scan, the patient needs to take care of rest and observe the physical condition. Since the CT scan uses X-rays, patients may experience some discomfort or fatigue after the examination. If you experience any abnormal symptoms or discomfort, you should inform your doctor in time so that it can be dealt with promptly.
04
CT examination is contraindicated, and 5 types of people are not suitable
First of all, pregnant women are one of the contraindications to CT scanning. Because CT scans involve radiation, these rays can be potentially harmful to the fetus, increasing the risk of fetal malformations or other health problems. Therefore, pregnant women should consult their doctor and weigh the pros and cons before having to undergo a CT scan.
Secondly, children are also sensitive to CT scans. Children divide cells more rapidly and are more susceptible to radiation than adults. Although CT is of high diagnostic value in children, the dose of radiation should be strictly controlled and unnecessary duplication should be avoided.
Third, people with severe heart, liver, and kidney insufficiency are also not suitable for CT examination. These people are already impaired in their organ function and are unable to effectively metabolize and excrete radioactive substances, which may increase the damage to the body from radiation.
Fourth, people with thyroid disease also need to be cautious about undergoing CT scans. The thyroid gland is very sensitive to radiation, and overexposure can lead to thyroid dysfunction or other complications. Therefore, these people should consult an endocrinologist before undergoing a CT scan.
Finally, people who are allergic to iodine contrast media are also contraindicated to CT scanning. When performing CT enhanced scans, iodine contrast media is often required to improve image quality.
However, people who are allergic to iodine contrast media may experience severe allergic reactions that can be life-threatening. Therefore, these people should undergo an allergy test before undergoing CT scans and choose other tests under the guidance of their doctors.