Xiao Wang has always felt that he is in good health, but recently, he has always felt a little stiff in his neck, and he has a headache from time to time. At the suggestion of a friend, he decided to go to the hospital to see a doctor.
After an initial diagnosis, the doctor recommended an MRI to get a deeper understanding of his physical condition. However, after hearing the word "magnetic resonance", Xiao Wang suddenly became a little hesitant.
"Doctor, I've heard that MRI will have radiation, this... Will it cause harm to the body?" Xiao Wang's tone was a little worried.
The doctor looked at him and smiled slightly, "The question you mentioned is interesting. In fact, many people have misconceptions about the radiation of magnetic resonance. So, what kind of radiation problems have you heard about?"
Xiao Wang scratched his head and said a little embarrassedly: "It's just... I heard that magnetic resonance has a lot of radiation, which may cause harm to the body. ”
The doctor nodded, and instead of answering directly, he said, "Next, I will explain to you in detail the principle of magnetic resonance and whether it really exists as you call the 'radiation' problem." ”
This answer made Xiao Wang even more curious, and he decided to listen carefully to the doctor's explanation.
High-resolution imaging: MRI provides very detailed and clear images of soft tissue structures. This is critical for diagnosing tumors, inflammation, injury, and other soft tissue lesions.
Non-invasive and safe: Compared to other imaging methods, MRI is a non-invasive test that does not use ionizing radiation, so it is considered a relatively safe test method.
Multiplanar imaging capabilities: MRI is capable of multiplanar imaging, which means it can show the lesion from multiple angles, helping doctors get a more complete picture of the condition.
Early lesion detection: MRI is very sensitive for the detection of early lesions, which can help detect and treat diseases in time.
Functional imaging: In addition to structural imaging, magnetic resonance can also perform functional imaging such as diffusion-weighted imaging (DWI) and perfusion-weighted imaging (PWI), which can provide information about tissue function and hemodynamics.
Wide range of applications: Magnetic resonance imaging is suitable for the diagnosis of a wide range of diseases, including but not limited to brain diseases (such as cerebral infarction, brain tumors, etc.), spine and joint diseases, abdominal and pelvic diseases, and cardiovascular diseases.
Magnetic resonance can cause cancer: This rumor may stem from a misunderstanding of the word "radiation". However, MRI does not use ionizing radiation, but rather magnetic fields and radiofrequency waves, so it does not increase the risk of cancer like X-rays or CTs.
Magnetic resonance imaging is harmful to the mother and fetus: Because magnetic resonance does not use ionizing radiation, it is generally considered a relatively safe test for both the mother and the fetus (if necessary and following appropriate safety guidelines). However, this rumor may lead people to mistakenly believe that MRI is harmful to pregnant women and fetuses.
Magnetic resonance imaging is not possible if you have metal on your body: Although a strong magnetic field can interact with metal objects during an MRI and may generate heat or cause metal objects to displace, not all metals are affected. Modern MRI equipment has been designed with this in mind, and there is a detailed screening process prior to the examination to ensure patient safety. In addition, some special metal implants, such as certain types of pacemakers or nerve stimulators, may require special evaluation before the test.
Magnetic resonance imaging can diagnose all diseases: While magnetic resonance imaging is very useful in medical diagnosis, it does not diagnose all diseases. Every medical imaging technique has its limitations, and magnetic resonance is no exception. It is particularly good at showing soft tissue and nervous system structures, but not all diseases can be accurately diagnosed in this way.
MRI is time-consuming and uncomfortable: The length of an MRI depends on the sequence and area of the examination required. Although some tests may take a long time, this is not the case for all MRI tests. In addition, while MRI machines generate noise when they are running, modern equipment often takes measures to reduce noise and provide a more comfortable examination environment.
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