MRI of retroperitoneal space
Diagnostic purpose of an MRI of the retroperitoneal space is examination of the kidneys, adrenal glands, ureters, lymph nodes, blood vessels (large arteries, veins and their branches), soft tissues, the surrounding cellular tissue. In the process of studying Mr imaging anatomy of these structures in the presence of pathological changes in the organs carry out their assessment.
Indications for MRI
- Suspected lesion of the kidneys or adrenal for clinical data or other radiological methods (ultrasound, CT).
- Differential diagnosis of cystic and tumor formation in the kidneys or adrenal glands.
- Diagnosis of inflammatory processes of organs located retroperitoneal.
- Identification of malformations of the urinary tract.
- Planned surgical intervention.
- Assessment of the dynamics of the treatment.
- The suspected expansive process in the retroperitoneum (tumor, lymph node metastases, abscesses).
- Cases when it is impossible to perform excretory urography (intolerance to iodinated contrast media).
Contraindications to Mr-imaging
The implementation of Mr-research cannot be carried out in cases where patients have metal objects in the body, which under the influence of magnetic field can shift and damage adjacent organs and tissues, and sometimes even cause the death of the patient. As well as cases where subjects are devices that can fail under the influence of magnetic field:
When magnetic resonance imaging no radiation exposure to the patient, therefore this method can be used during pregnancy. But, according to numerous reports, first trimester of pregnancy (before 12 weeks of gestation) is a contraindication to MRI.
Attention! Mr study pregnant, especially with contrast, execute only for health reasons or in cases when the data obtained by other radiation methods are insufficient for diagnosis.
Preparation for MRI of the retroperitoneal organs
In the study of kidneys and adrenal glands of special preparation for the research required. However, MRI is best done on an empty stomach (not eating for twelve hours before the intended procedure), especially when conducting an Mr study with contrast. Also recommended for thirty to forty minutes before the procedure take two pills antispasmodic (shpy) that will help you to avoid excessive gas and will allow to obtain an image of good quality.
Don’t forget to bring your medical records (hospital discharge, data about the performed surgical interventions, the direction of a physician on the study, previous conclusions MRI).
How is Mr study
The patient lies on a table for research. He establishes a special coil on the area to be imaged and explains briefly the essence of the procedure. Definitely need to warn you that during the scan you cannot move and at the request of the assistant will need to hold your breath. The average duration of MRT is 20-30 minutes. If there will be additional programs or the enhancement, then study time will increase.
Caution! Before you enter the office, which features a Mr-scanner, you must yourself remove the clothes on which there is some metal items, watches, jewelry. And leave in a specially designated place foreign metal objects (pins, coins, lighters, keys, removable metal dentures, etc.).
Opportunities of Mr-studies of retroperitoneal space
To enhance the diagnostic capabilities of magnetic resonance imaging is best done at high field devices with the magnetic field (at least 1-1. 5 Tesla). Since the scanners of this class have a high resolution, thanks to the various programs have the opportunity to conduct research interested areas in thin slices. This allows you to identify pathological changes in dimensions of a few millimeters, which improves early diagnosis of various diseases of organs located in the retroperitoneal space.
To carry out differential diagnostics and to determine the nature of tumor (benign or malignant) in the kidneys or adrenal glands standard Mr study complement the implementation of special programmes: the diffusion-weighted images and contrast-enhanced (dynamic). Also from the data obtained in conducting the additional Mr, depends on the subsequent treatment strategy and prognosis of the disease. In addition, MRI often obviates the need for invasive diagnostic methods, such as laparoscopy and biopsy.
What studies Mr study?
In MRI of the retroperitoneal space include a study of the renal and adrenal vessels of the kidney (Mr angiography), lymph nodes, evaluation of Mr signal from the surrounding tissue and soft tissue. On Mr-tomograms produce a measurement of the kidneys, renal parenchyma, the inner cavity (pelvis and cups).
In the study the adrenal glands produce the estimation of the thickness of the legs, body, evaluate the structure of the program with the suppression of Mr signal from the fat tissue helps in the diagnosis of space-occupying lesions. Also if you suspect a pathological formation of adrenal shown holding contrast enhancement that will allow you to better visualize the tumor and a differential diagnosis for the installation of the nature of the pathology.
MRI of the kidneys is complemented by conducting contrast urography, which allows to estimate the functional state of the kidneys and urinary tract.
To summarize, I would like to note that Mr imaging has enormous potential in the diagnosis of pathology of organs located in the retroperitoneal space, particularly in detecting tumors. Another advantage of the method is the use of non-ionizing radiation, making it safe for patients (including children) and the lack of sophisticated preparation for the study.