What is the difference between MDCT and MRI of the spine and what method is best to use for diagnostics?
To understand MSCT and MRI – what's the difference, you need to know the working principle of the equipment used.
MRI is magnetic resonance imaging, which are magnetic and radio waves. The computer shows the image of the examined body part. MSCT – multislice computed tomography, based on the use of x-rays. MRI and CT allow professionals to obtain reliable information about existing pathologies at an early stage.
The Equipment used for the CT scan, presented in the form of the following elements:
- magnet – used to create a magnetic field;
- coil – responsible for creation of gradient magnetic fields;
- the computer controls the coil and processes the signals.
The MSCT Examination of the cervical spine is performed using a fan beam of x-rays. They pass through tissue and organs, then fall on special sensors, and converted into electrical signals. The computer receives and processes information, showing a clear image. This technique is used to diagnose and study diseases of the brain and other organs.
MRI is an examination that is conducted to identify diseases of the internal organs. The patient is placed in a magnetic field. The protons in the molecules of the tissue generate a specific signal which is transmitted to the receiving apparatus. Using MRI it is possible to obtain a three-dimensional image with distinct relief that better enables you to examine tissues, organs, cartilage, vertebrae of the neck and back. The advantages of MRI include lack of radiation exposure, which allows several procedures in a row without restrictions.
The Decision on which type of imaging to use, is taken by the doctor in each case individually. The expert takes into account the characteristics of the patient. In some diseases it is possible to use MRI and CT. Before you choose a specific diagnostic procedure, the physician takes into account contraindications. MRI is prescribed in the case of the study of the nervous system, tissues, muscles and joints.
Images of bones visible on CT scan. The content in the skeletal system of protons of hydrogen affects the clarity of the images. For examination bodies, hollow inside (lungs, stomach and kidneys), designate the following types of CT:
- odnorazovaja (obtaining tomographic layer 1);
- role (2-640 simultaneous reconstruction of tomographic slices).
Magnetic resonance imaging indicated for examining the esophagus, trachea, and cardiovascular diseases. When multidetector CT examination the patient is subjected to insignificant exposure. This type of diagnosis is contraindicated for pregnant women because there is a risk of harm to the fetus. Children at an early age cannot be computed tomography. Contraindications to ICLS:
- kidney failure
- the presence of gypsum.
Contraindications for MRI physicians include:
- fear of enclosed spaces (claustrophobia);
- the presence of pacemakers, prostheses;
- the patient's weight exceeds 100 kg.
Rarely, the doctor may identify additional contraindications based on patient history and other factors.
differs from MSCT imaging in the physical phenomenon that allows to obtain images of the target organ. The first diagnostic method based on x-rays, and the second at constant and alternating magnetic fields, including radiofrequency radiation. For such waves the tissues of the patient's body can respond differently.
advantages Of imaging experts identify the images for the body in any plane. the patient does not feel discomfort. The procedure requires no special preparation of the patient for examination.
using the MDCT is possible to obtain thin sections of tissues and organs. If necessary, reformats the images in different planes and showing the structure of the walls of the body. To diagnose some diseases by both considered methods. Magnetic resonance imaging is recommended to take place in diseases of the Central nervous system, muscles and joints. On the images, any pathology will be clearly visible. To study the skeletal system, specialists prescribe MSCT. A similar technique is used in the study of the stomach and intestines. Indications for MRI:
- diseases of the pelvic organs;
- study the blood vessels.
Magnetic resonance computed tomography is indicated for examination of the respiratory and abdominal cavity, kidneys and skeletal system. MSCT is performed atdiagnosing the exact location of the injury. Often patients refuse such a survey for fear of x-ray irradiation. If necessary, the patient is prescribed additional procedures.