MRI of facial features

The facial features MRI is an MRI examination of facial features to diagnose the presence of lesions on the face. MRI scanning technology is a routine MRI examination technique, including imaging sequence, parameters and scanning orientation, for MRI examination at each site. Basic Information Specialist Category: Otolaryngology Examination Category: Nuclear Magnetic Resonance Applicable gender: whether men and women apply fasting: not fasting Tips: Those who install artificial heart pacemakers and nerve stimulators are forbidden to check. Normal value Subcutaneous fat and bone marrow showed high signals on T1WI, T2WI and proton density images; cortical bone, air, ligament, tendon and fibrocartilage showed low signal; muscle and joint hyaline cartilage showed moderately low signal. Fluids, such as intra-articular fluid, inflammation or edema and tumor tissue, are low on T1WI and high on T2WI. The hematoma shows different signs of intensity depending on the length of the bleeding. Check for abnormal lumps and areas. Clinical significance Abnormal result Eye indication 1. Ankle tumor; 2, eye muscle disease; 3, vascular lesions, including internal iliac varices, vascular malformations, internal carotid cavernous fistula, etc.; 4, trauma; 5. Non-metallic intraocular and intraorbital foreign bodies; 6, inflammation inside the sputum. Nasopharyngeal indications 1. Nasopharyngeal tumors; 2. Nasopharyngeal granulomatous lesions; 3, sinus tumors, cysts, polyps and mucosal thickening, sinus effusion, empyema and so on. Facial indication 1, a variety of facial benign and malignant tumors; 2, a variety of facial vascular lesions; 3. Facial granulomatous lesions; 4, facial lymphadenopathy. People who need to be examined: the nose, the eyes, the face with abnormal feelings, and the painful people. Precautions Forbidden before examination: fasting and water-free 4 hours before imaging examination, training patients to hold their breath. Requirements for inspection: Check the relaxed mood, follow the doctor's instructions to check, please bring the medical records, X-ray film, CT film, and previous MRI films along with the MRI room for reference. Inspection process MRI scanning technology is a routine MRI examination technique, including imaging sequence, parameters and scanning orientation, for MRI examination at each site. Unlike CT, MRI scans require not only cross-sectional images, but also sagittal or (and) coronal images, as well as T1WI and T2WI. Different anatomical features and different tissue relaxation times require different scanning orientations and appropriate pulse sequences and scanning parameters. According to the length of TE, T2WI can be divided into three types: heavy, medium and light. Changes in signal intensity in different T2WI lesions can help determine the nature of the lesion. Not suitable for the crowd Inappropriate crowd: 1. Those who install artificial heart pacemakers and nerve stimulators are forbidden to check. 2. It is forbidden to check if there is a silver clip in the skull and a metal foreign object in the eyeball. 3. The ECG monitor cannot enter the MRI examination room. Those who have undergone arterial surgery, have had heart surgery and have an artificial heart valve are forbidden to check. 4, a variety of critically ill patients: such as coma after trauma or accident, irritability, arrhythmia, respiratory insufficiency, constant blood loss and incontinence and so on. 5. Metal objects (such as internal fixed steel nails) cannot be inspected at the inspection site. 6. Pregnant women should be examined carefully. If they are pregnant, please inform the doctor. Adverse reactions and risks Nothing.