When the x-ray machine appeared, itwas a breakthrough in medicine. This made it possible to see the internal abnormalities in the human body, to find out the state of its organs. But even such a great way carries some flaws. For example, on X-rays, you can take a picture of some organs, but at the same time images of other organs can be superimposed on them.
And in this case, an exceptionally experienced and knowledgeable doctor will be able to decipher the result. Therefore, due to these shortcomings, progress has gone further.
New methods
There are other ways these daysdiagnostics of human internal organs, such as CT or MRI. But then there is a mass of questions. For example, what diagnosis to choose, what is the difference between CT and MRI? Further in the article we describe in detail their differences. We will also explain which diagnosis is more suited to a particular case.
Understand the difference between CT and MRI
Now many doctors recommend patients forbetter diagnostics conduct more thorough examinations, using computed or magnetic resonance imaging. What is this research? What is the difference between CT and MRI? Let's take a closer look:
- CT scan is computed tomography, whichis carried out using the properties of x-rays differently absorbed by different thickness of tissue. That is, CT, in general, is identical to x-ray, but the information obtained with its help is processed quite differently, and the radiation load turns out to be much higher.
- MRI (magnetic resonance imaging)produced using a magnetic field. Hydrogen atoms, due to its effect, change their place, and the tomograph captures this effect and processes it into a three-dimensional image.
As you can see, the question is how does CT differ from MRI, inwhat is the difference between these two diagnostic devices - immediately gets an answer. The main difference is the nature of the waves. Magnetic resonance imaging has electromagnetic waves. When they are affected by different tissues of organs, thanks to this, various data are obtained that are read using the apparatus of the device. And then all the signals are processed and, as in the examination of CT, the image is given on the monitor. Thanks to him, the doctor has the opportunity to see even layer-by-layer sections of organs. In addition, the image can be rotated and, if necessary, increase the desired area.
What else is the difference between CT and MRI?Which tomography is better? Every diagnosis is good and informative. The main difference lies in what pathology can be identified through these methods, and in addition, with the help of which rays this is done.
Scan time difference
Speaking of what is the difference between CT and MRI, it is worthIt should be noted that computed tomography (CT) has a serious radiation effect, and therefore it cannot be used frequently. But on the other hand, X-ray radiation affects the organs for no more than 10 seconds. So, such a study is best done with those people who suffer from claustrophobia.
Magnetic resonance imaging same (MRI) lastsusually from ten minutes and more, depending on the area of study. At the same time it is necessary to maintain immobility. Therefore, MRI is more suitable for people who do not have any major abnormalities in the psyche. As for children, when using a magnetic resonance examination, they give anesthesia.
Based on the foregoing, one can understand the difference between MRI and CT. What is the best MRI or CT scan for you? This question can only be answered by a doctor, based on the characteristics of your body.
When is MRI applied?
Inexperienced people who suffer variousdiseases, referring to the attending physician, ask a question about how CT differs from MRI. But since we have already found an answer to it, then we will talk further about the diseases for which it is best to use an MRI, and where is a CT scan.
MRI gives the most complete information when studying soft tissue. Therefore, it is prescribed in the following cases:
- if a person has a formation in the muscle tissue, fat cells, in the abdomen and pelvic area (this is done to get a complete picture after the study using ultrasound);
- in various diseases of the brain and spinal cord;
- when there is a suspicion that in the area of the brain or spinal cord there are disturbances in the blood circulation;
- when you need to examine the intervertebral discs or the state of the tissues of the joint.
And when is computed tomography applied? She is prescribed:
- for the study of bone tissue in the spine and joints;
- when bone tissue is affected by tumor formations;
- when the bones of the skeleton were injured;
- with pathologies in the abdominal organs, small pelvis, as well as in the lungs;
- with atherosclerotic changes in the vascular system.
Contraindications
Based on what has been described above, the doctor will be able to choose the right type of diagnosis for each patient individually. But there are some contraindications that should be considered.
These include the following:
- CT scan is not allowed during pregnancy.
- MRI is not prescribed:
- in the presence of any metal parts implanted in the body;
- with electronic devices in tissues (for example, a pacemaker);
- suffering from claustrophobia;
- with a person's weight over 150 kg;
- patients with neurological disorders who are not able to stay long in one position.
A small conclusion
The question of which is better from two surveyschoose, is given to each person who needs to undergo a diagnosis of internal organs. And in order not to harm his health and get as much useful information as possible, the patient must ask his doctor about the difference between CT and MRI. And the specialist will help determine what is more suitable for the patient in each case.
