Magnetic resonance spectroscopy

Magnetic resonance spectroscopy (MRS) is the only non-invasive technique for determining the chemical composition of a specific tissue region in vivo. It is the perfect combination of magnetic resonance imaging and magnetic resonance spectroscopy. It is a new type based on magnetic resonance imaging. Functional analysis of diagnostic methods. Installation of artificial heart pacemakers and neurostimulators is prohibited. Basic Information Specialist Category: Neurological Classification: Nuclear Magnetic Resonance Applicable gender: whether men and women apply fasting: fasting Reminder: Those who have had arterial and heart disease surgery and have artificial heart valves are forbidden to do this test. Normal value Check for abnormal lumps and areas. Clinical significance Abnormal results: The brain, heart, skeletal muscle and liver are the most widely studied. There are many brain magnetic resonance spectroscopy studies, such as cerebral infarction, brain tumor, white matter and gray matter, epilepsy and metabolic diseases, especially brain tumor research, brain tumor and non-neoplastic lesions, brain The identification of benign and malignant tumors, the classification of malignant tumors, the identification of postoperative recurrence and necrosis of tumors, and the identification of primary and metastatic tumors have great clinical value. In addition, they can identify craniopharyngioma and pituitary tumors, and brain. Tumors and extracranial tumors, and determine central nervous system tumors in the ventricles. The application in the heart is mainly in the study of myocardial metabolism such as myocardial ischemia and cardiomyopathy. The main research of liver 31P-MRS includes liver metabolic diseases, hepatitis cirrhosis and liver tumors. MRS can provide metabolic information of prostate tissue to help identify prostate cancer and benign prostatic hyperplasia. MRS can also non-invasively detect metabolites and intracellular pH values ​​of skeletal muscle phospholipid metabolism and energy metabolism, and study abnormal changes in phospholipid metabolism and energy metabolism of bone and soft tissue tumors. People to check: people with brain, heart, skeletal and liver tumors. Precautions Taboo before inspection: no special contraindications. Requirements for inspection: Check your relaxation and follow the doctor's instructions. Inspection process The content of some compounds and metabolites in the tissue and their concentrations. Since the atomic protons in each tissue are in the form of certain compounds, these compounds or metabolites have a certain chemical shift in a certain chemical environment, and There are small changes in the peaks in the magnetic resonance spectrum, and their small changes in peak and chemical concentrations are acquired by a magnetic resonance scanner, which is converted into a numerical spectrum. These chemical information represent the concentration of the corresponding metabolite in the tissue or body fluid, reflecting the metabolic state of the tissue cells. That is, magnetic resonance spectroscopy expresses its pathological changes in terms of tissue cell metabolism. 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.