Magnetic *** vibration imaging technology is a cutting-edge technology of modern medicine, the basic principle is in a more powerful magnetic field, recording the body of various organs in the atomic nucleus of hydrogen atoms in the trajectory, after complex calculations to get the detection of organ imaging. Magnetic **** vibration can be used to check the spine and cranial brain, but also on the muscles and various organs of the body imaging, in the clinic has important practical value.
Comparison with electronic devices computed tomography (CT), magnetic **** vibration technology is more secure, less harmful to the body, but its innovation and good use of the time is shorter, there are many people lack of basic mastery of it.
Magnetic *** vibration examination noise is how?
These noises are generated by the current breakage caused by the gradient switching vibration, magnetic *** vibration without these gradient system will not form the signal transmission, reception, not to mention the formation of valuable image information. It is the periodic gradient switching that causes the noise to repeat. The stronger the gradient magnetic field, the higher the noise. With the current level of technology continues to progress, the current magnetic **** vibration imaging equipment formed by the gradient magnetic field associated with the noise level of 65 ~ 95dB, this range is in the FDA (Food and Drug Administration, the international medical audit authority) recognized the safety range.
When the patient cooperates with the staff to wear the special headphones or earmuffs, there will be no damage to the patient's hearing. Nowadays, the equipment researched by merchants has long considered the impact of noise on patients, has taken the initiative to take the noise reduction technology, as far as possible, so that patients can safely and comfortably accept the magnetic **** vibration examination, so the patient must relax when receiving the magnetic **** vibration examination, these noises are unavoidable, are in the tolerable range of safety.
What are the 4 generalizations about the magnetic **** vibration technique?1. Is there a source of radiation
Magnetic **** vibration imaging and CT is not the same, magnetic **** vibration and will not use X-rays, such as with a strong source of radiation auxiliary modalities. The essence of magnetic resonance is to look for the trajectory of the hydrogen atoms in the body cells, and then carry out a lot of measurements of this line of action, and use the computer mapping to produce the final image. It is hardly a source of radiation.
Compared with CT, magnetic **** vibration of the imaging precision is higher, can produce cross-sectional, coronary virus, three-dimensional image of a variety of physical models, can be analyzed from several aspects of the disease, which is very critical to the physician's observation and diagnosis, are very effective.
2. The contrast agent is not safe
Before the magnetic **** vibration, it is very likely to have to inject the contrast agent, and many people are worried that this is not going to have an adverse effect on the body. The contrast agent is an adjunctive modality that can be used to improve the actual results of the imaging. The contrast agent can also accompany the blood to each organ for a short period of time, which in turn assists the physician in distinguishing whether the organs of the structure are in good condition while imaging, and can also differentiate between a diseased organ and a diseased organ that is reasonable or malignant.
The contrast medium is essentially a medicine, and some patients may feel unwell after touching it, mainly because of mild symptoms such as nausea and vomiting and nausea and nausea, but more serious side effects such as pain in the internal organs and difficulty in breathing may also be caused. It is important to pay attention to your physical condition immediately after the application of contrast media, and to communicate with your doctor immediately if there is any reflection.
3. Noise during the test
In the case of magnetic **** vibration, the patient is likely to hear a relatively loud noise, but there is no need to worry too much, this is the equipment in the development of indoor spatial precision positioning, in simple terms, that is, in a clear lying on the side of the person's specific address.
Feeling that the noise is too loud, you can wear ear muffs or cell phone headphones, which are generally given in hospital outpatient clinics.
4. Frequently Asked Questions
To do magnetic **** vibration of the important common problem is to excise the body of all metal manufacturing, including but not limited to cobalt-nickel-iron aluminum alloy, especially women patients, to change early without metal material lining of the underwear, otherwise it is likely to cause embarrassment.
The internal structure of the body has a copper sheet, cardiac pacemaker installation patients, to communicate with the doctor early to determine whether they can carry out the test, in order to prevent the occurrence of unpleasant adverse effects.