Which is better ultrasound or MRI of abdomen?
Diseases of the abdominal cavity are a common pathology that requires timely diagnosis. Than before to identify a pathology, the more the chances of recovery. A significant role in providing beam diagnostics, especially ultrasound and MRI.
When choosing a method of study of abdominal organs is often the question arises which one is the best to use. It depends on many reasons, first and foremost, from the existing pathological changes.
Indications for ULTRASOUND study of the abdomen
Ultrasound is screening method of the study, so the diagnosis begins with him. This method of visualization is carried out in cases of suspected pathological changes in the liver and the intrahepatic bile ducts, pancreas, gall bladder and common bile duct and spleen.
Ultrasonography may reveal the following changes:
- inflammatory changes in the organs;
- traumatic injuries of the abdomen;
- the presence of cystic formations (including that of parasitic origin);
- space-occupying lesions focal and diffuse (benign and malignant tumors);
- free fluid in the abdomen (fluid or blood);
- spread of the cancer beyond the organ.
Added to that modern ultrasound equipment can detect signs of stomach cancer, although this is not a method of choice for studies of this organ. Inflammatory changes of the Appendix, that is an indirect manifestation of appendicitis is manifested by the presence of free fluid in the pelvis can also be detected when conducting an ultrasound. In conjunction with the clinical picture, these data may help in diagnosis.
The advantages of MRI examination of the abdomen and stomach
MRI is a more accurate method than ultrasound. It is possible to make an accurate diagnosis, which could not be put with other radiation methods. The main advantage of imaging is the ability to detect pathological changes at an early stage. This is especially important if cancer is diagnosed.
I want to add that using MRI it is possible to conduct a survey of the stomach, to detect signs of appendicitis, to establish the number and nature of free fluid in the abdominal cavity. In addition, this visualization method is able to estimate more accurately the germination of cancer than an ultrasound.
It should be noted that MRI can be performed with contrast enhancement. While postcontrast tomography is able to show the exact spread of the cancer into the surrounding tissue, as well as using contrast to detect pathological education is very small in size.
Contraindications to tomography
It should be said that MRI is contraindications associated with the presence of a constant magnetic field in the office, as well as exposure to electromagnetic radiation.
Attention, this method cannot be performed in the following cases:
- if the patient has a pacemaker;
- if the patient is in severe unconscious (not able to lie still during the scan);
- if there are metal objects in the body (surgical plates, stents, etc.);
- in the early stages of pregnancy (in this case it is possible to study only for health reasons).
Comparing diagnostic capabilities of ultrasound and MRI
The diagnostic capabilities of these two methods is presented in the table:
Comparative data possibilities of ultrasound and MRI in the detection of pathological changes in the abdominal cavity.
|Contraindications||Virtually no||The study could not be carried out in many cases (contraindications listed above)|
|The identification of pathology||It is not always possible to identify all pathological changes||In almost all cases detected pathology|
|The diagnosis of cancer||Cannot always detect cancer, especially early on||It is possible not only to detect the presence of the tumor, but also to assess the growth into adjacent organs and distant metastases|
|Detection of gastric cancer||Using this method it is difficult to examine the stomach, as the air prevents the passage of ultrasonic waves||Shows the thickness of the wall of the stomach, and sometimes the presence of pathological changes in it|
|Fluid in the abdominal cavity||Can identify (mainly in the presence of large amounts of fluid)||Better identify fluid than the UZI even in a small amount, allows to establish her character|
|Identify symptoms of appendicitis||The Appendix is not visible, you can identify fluid in the pelvic cavity, as a manifestation of appendicitis||Often visualized the Appendix, you can see the signs of appendicitis, including fluid in the pelvis|
|The time of the||To 10 minutes||20-30 minutes, if you use contrasting and complementary programs time tomography of the abdomen may increase to 40-50 minutes|
|Examination of pregnant women||Can be performed in cases of suspected pathology of the abdominal cavity, stomach, appendicitis||Only on strict conditions|
|Examination of children||Is||Often performed under General anesthesia (so as to obtain high-quality images needed to lie down during the scan still)|
|(including in cases of suspected appendicitis)|
|The cost of the study||Relatively inexpensive||The cost is several times higher than ultrasound|
Comparative data possibilities of ultrasound and MRI in the detection of pathological changes in the abdominal cavity
In conclusion, I would like to say that if a diagnostic manipulation of the abdomen is performed to clarify the poor health of the patient at a sufficiently clear clinical picture, the only ultrasound may be sufficient. If you want to make a General survey of the abdomen to determine the cause of illness of the patient, it is better to conduct an MRI. Note that in this situation, ultrasound examination does not guarantee a perfect result, especially if the cause of the cancer malady is. In addition, this method more accurately determine the pathology of the stomach and signs of appendicitis.