MRI of the pelvis
Pathology of the hip joint is common among all age groups from newborns to the elderly. In addition to traumatic injuries, there are a number of diseases (congenital, degenerative, age-related, autoimmune), the pathological process which captures primarily the soft tissues, ligaments, joint cavity. The greatest diagnostic value in such cases has an MRI of the hip joint.
The study is based on performing layer-by-layer scanning of the authority in increments of five millimeters. It allows you to create a three-dimensional image of the body, performing not only transverse scans, but also longitudinal. Image technology based on the detection of radio pulses of the response of fabrics under conditions of electromagnetic fields of high voltage.
Arthritis – acute or chronic inflammation of the joints that develops in the background of various diseases (rheumatoid arthritis, rheumatic fever, Reiter’s disease, psoriasis).
Using MRI hip arthritis it is possible to identify the disease in its early stages when x-rays and CT scans cannot see the pathological deviations. This allows adequate treatment and stop the progression of the disease.
Arthrosis is a chronic degenerative disease of cartilage, accompanied by the gradual destruction of the joint.
In choosing the tactics of treatment and to establish the degree of disability, an important stage of the disease, which can be identified by characteristic features: thinning of the cartilage plate, the presence of osteophytes – acute calcification on the surface of bone, narrowing of the joint space and the condition of synovial fluid.
X-ray allows you to evaluate the arthrosis in two projections (frontal and lateral), MRI of the hip joint shows pathologic changes in three-dimensional projection, which makes the diagnosis more accurate.
Aseptic necrosis of the femoral head pathology, the frequency of which is increasing in recent years. For the disease characterized by the withering away of the articular surface of the femur, without the development of infectious process. The reasons for the development of this disease are many: poor blood circulation, degenerative processes, genetic factors.
Necrosis is a serious disease that leads to permanent disability in connection with the loss of the ability to move.
Performing MRI of the hip joint, it is possible to detect the disease at early stages and pursue conservative treatment (without surgery) to slow the progression of the disease. In the later stages carry out joint replacement. For precise adjustment of the prosthesis and to control the condition after the surgery, also make magnetic resonance imaging.
Sarcoidosis – a chronic multi-organ disease. Lose develops in many organs: lungs, muscles, and bones. Often sarcoidosis is accompanied by the development of pain in the large joints. Arthralgia sarcoidosis usually symmetrical.
MRI of the hip joint and pelvic bones allows to identify specific changes that will help to establish the correct diagnosis. For sarcoidosis, the characteristic pathological changes of the tissues around the joint (muscles, ligaments). In the acute phase of sarcoidosis intra picture may resemble arthritis.
On MRI of the sacroiliac joint in the sarcoidosis to identify areas of osteoporosis and lesions of the long bones and atrophy of muscles of the pelvis. All characteristic sarcoid changes can be diagnosed at MRI of the hip joint, the method also allows to carry out differential diagnostics of sarcoidosis from other diseases.
MRI of the sacroiliac joints allows to make a diagnosis of oncological processes, both benign and malignant growth. Creating a three-dimensional picture, a CT scan shows bone infiltration and the condition of the cartilage, but also the involvement of neighboring organs and lymph nodes.
Suitable magnetic resonance imaging and to assess the effectiveness of treatment without extra radiation exposure, unlike x-rays and CT scans.
In preparation for the examination
MRI of the proximal joint of the lower limb and pelvis no preparation is needed. But, going to study, you should know that when doing research on the bones of the pelvis, the photographs will also be visible and the pelvic organs, the condition of which may be important for determining the prevalence of pathological process, for example in the detection of the tumor.
Visualization of the pelvic organs can interfere with the high content of gases in the intestine, therefore, going for an MRI of the iliac-sacral joint or hip joint, is to refrain from foods that contribute to gas production (bread, vegetables, dairy products) for several days before the test, as well as food on the day of the study for four to five hours before the procedure.
Magnetic resonance imaging is used for decades, which allowed the doctors to make sure she was safe even for pregnant women and infants. This is a huge advantage of the method before CT scan and x-rays.
However, the generation of a powerful magnetic field at the time of diagnosis forces us to make restrictions on the use of the method:
- Metal construction (apparatus Elizarova).
- Metallic implants (clips on blood vessels).
- Electronic implants (pacemakers).
Prosthesis titanium prosthesis is not a contraindication to magnetic resonance imaging, as the alloy is inert with respect to the magnetic field. But the use of titanium chips when performing tattoos prohibited conduct research.
All of the above contraindications are monitored more strictly, the more powerful the scanner and are absolute.
There are limitations to the method, associated with the design of the apparatus and methods of procedure:
- acute mental disorders;
- severe somatic condition of the patient;
- weight more than one hundred and thirty pounds;
Magnetic resonance imaging – a method of accurate diagnosis, which can be done many times within a short period of time, without harm to the patient, which distinguishes it from CT and x-rays.
If you compare CT and MRI, plus first will serve more affordable price of computer tomography. This entails increasing the availability of research, as by equipping the medical institutions with equipment, and due to the lower cost study.
X-rays also does not lose its relevance and has indications for in cases of simple fractures and sprains, when there is no need for complicated and expensive method of diagnostics (CT and MRI).