MRI coccyx: preparation, conduct that shows?


  • How to conduct research?
  • How to prepare for the exam?
  • Contraindications
  • Despite the fact that the coccyx is a vestige of a tail, he carries a functional load, so the disease coccygeal spine can be a serious problem for the entire body. For the diagnosis of abnormalities frequently use MRI of the coccyx.

    Coccygeal region of the spine is a vertebrae fused together, normally there may be from three to five. Each successive vertebra is smaller than the previous, so the coccyx similar to a cone, the tip facing downward and anteriorly.

    The function of the coccyx

    To the coccygeal part of the spine attached muscles of the pelvic floor and anus, as well as some bundles of gluteus Maximus, so he is involved in the function of the pelvic organs, as well as in the movements of the hip joint. In addition, it relieves other vertebrae of the load in case of deviations of the case back.

    The disease, which can be seen on MRI

    Like other parts of the spine, coccygeal Department can be subjected to various pathological processes: inflammatory, destructive, traumatic, cancer. The position of the body does not always allows us to see pathology in the x-ray, so often hold Mr imaging of the coccyx.


    A tailbone injury are insidious pathology. Often people do not seek medical care when injury or fall, the pain goes away gradually and life goes on. However, during the fall often leads to fractures, cracks and dislocations coccygeal Department, which will definitely be felt after a certain time.

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    Sometimes the pain returns years later, when people had already forgotten about the injury. This may be due to destructive and chronic inflammation in bone, cartilage and inflammation strangulated nerve fibers passing in this Department.

    X-ray does not always show old fractures and cracks, since the plane of fracture can be complex, therefore conducting a study using MRI of the coccyx. Making layer-by-layer scanning, Mr imaging can identify even complex bone defect and to identify foci of inflammation and destruction.

    Coccyx MRI has advantages and before computed tomography because after injury can be inflammation not only in bones but also in the surrounding soft tissues. For the diagnosis of fresh injury, MRI is also the most effective method, as it can diagnose a large hematoma formed at the fracture and torn ligaments sprains.

    Symptoms from neighboring organs

    Often, an undiagnosed dislocation of the coccyx, lead to a change in its provisions: coccygeal Department is bent anteriorly and may cause pain and dysfunction of the rectum and also a hindrance during a vaginal delivery, therefore, the identification of displacements of this Department with MRI is important for diagnosis of pathologies of the adjacent organs.

    In addition, pain in the pelvis, often associated with diseases coccygeal Department, as a rule, can be taken for diseases of the genitourinary system, therefore MRI of the coccyx becomes part of the diagnostic search.

    Inflammatory and destructive diseases

    Identifiable with MRI of the coccyx low back pain, osteoarthritis of the sacrococcygeal joint, tuberculosis of bones and other inflammatory processes not related to the injury.

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    MRI is the most effective method for the diagnosis of cancer in the sacrococcygeal Department, as it allows to identify the tumor, even of the smallest size, and to determine the prevalence of the process to other organs, tissues and lymph nodes to identify metastasis. For the diagnosis of cancer is often used study with contrast.

    How to conduct research?

    Magnetic resonance imaging for the diagnosis uses the property of electromagnetic field that is generated within the cylindrical capsule machine. Inside the capsule is placed person. Under the action of electromagnetic influence of hydrogen protons in the tissues to create a response signal which the scanner picks up and transformered in the image on the film. Of hydrogen ions in different tissues is significantly different, so the image contrast is obtained.

    The electromagnetic field is safe for humans and can be used for diagnostics multiple times in a short period of time, it also allows you to diagnose children and women during pregnancy.

    The method is painless and does not disturb the integrity of tissues. As contrast agents in MRI use hilate compounds of gadolinium, which is not toxic to humans and are excreted unchanged by the kidneys within a few days after the study. Contrast is injected into a vein before the test jet, or drip during the procedure.

    How to prepare for the exam?

    The study makes no special training. In the study with contrast must not consume any food for five hours prior to the procedure.

    Also going for an MRI, you need to choose clothing without metal elements and lurex. Do not wear jewellery or watches as they will have to be removed during the procedure.

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    • Metal and electronic devices inside and outside the body.
    • Severe claustrophobia.
    • Weight more than one hundred and thirty pounds.

    • Mental and physical condition does not allow long and still be inside the unit.
    • For children under five years of contraindications to anesthesia.
    • Studies with contrast: allergic reactions and hypersensitivity to gadolinium and renal failure.

    Currently, there are apparatuses, the electromagnetic field that does not require confined space (open), they allow to study overweight men and patients with claustrophobia.