Maxillofacial CT scan

The maxillofacial five-score CT examination can timely and accurately diagnose the fracture site, fracture type and fracture displacement, which is of great significance for the clinical development of the correct treatment plan. The scanning position is in the supine position, the scanning baseline is the mandibular angle, and the scanning range is from the mandibular angle to the eyebrow arch. Observe the guidance of the technicians during the inspection, keep the position and do not move, and cooperate with the examination to calmly breathe, hold your breath, do not swallow, and do not blink your eyes. Basic Information Specialist classification: growth and development check classification: CT Applicable gender: whether men and women apply fasting: fasting Tips: For those who need to be fasted for 4 hours before the examination. Normal value There was no abnormality in the angiography. Clinical significance Abnormal results The type of maxillary fracture can be determined by observing and recording the number of bone fractures in the maxillofacial region. Patients who need to be examined for maxillofacial fractures in the population. Precautions Taboo before inspection: 1. Before the examination, the CT doctor should be informed of the detailed medical history and various examination results. If you have your own saved X-ray film, magnetic resonance film and previous CT film, you need to submit it to CT doctor for reference. 2, to explain to the doctor whether there is drug allergy, whether it has asthma, urticaria and other allergic diseases. 3, remove the inspection site clothing including underwear with metal materials and various items: such as headwear, hairpins, earrings, necklaces, jade, coins, belts and keys. 4, need to enhance the person before fasting for 4 hours. 5, if CT enhanced scan or children, unconscious, need to be accompanied by healthy people. 6, CT enhanced scan If you use ion contrast agent, you need to do intravenous injection of iodine allergy test, no response after 20 minutes, before you can check. 7, do not take heavy metal drugs within 1 week, do not do gastrointestinal tincture examination. Patients who have been tested for expectorant need to wait for the sputum to empty; if they are eager to have a CT examination, they should be treated with a cleansing enema or oral laxative to sputum. Requirements for inspection: 1. Obey the instructions of the technicians during the inspection, keep the position and do not move, and cooperate with the examination to calmly breathe, hold your breath, do not swallow, and do not blink your eyes. 2. The CT machine is equipped with a walkie-talkie. If there is any discomfort during the examination or an abnormal situation occurs, the doctor should be informed immediately. Inspection process The GE Light-speed multi-slice spiral CT scanner was used for examination within 48 hours after injury. The scanning position is in the supine position, the scanning baseline is the mandibular angle, and the scanning range is from the mandibular angle to the eyebrow arch. Scanning parameters: voltage 120kV, current 200mA, layer thickness 3.75mm, pitch 0.938, bed speed 9.37mm/rot. After volume scanning, the layer thickness is thinned to 0.625mm, and the reconstruction data is transmitted from the host to the ADW4.2 image post-processing workstation for multi-planar reconstruction (MPR) and three-dimensional reconstruction volume imaging (3D-VR) with a reconstruction interval of 0.625. Use the bone algorithm. Not suitable for the crowd Inappropriate population: Patients with severe heart, lung, and kidney dysfunction.

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