Parathyroid imaging

In recent years, it has been found that 201Tl and 99mTc-MIBI can be concentrated in hyperthyroidism in addition to selective uptake by cardiomyocytes, and thus are widely used for parathyroid imaging for the diagnosis of hyperparathyroidism. . Basic Information Specialist Category: Oncology Inspection Category: Radionuclide Applicable gender: whether men and women apply fasting: fasting Tips: Those with severe cardiopulmonary function should not do this check. Normal value Normal parathyroid glands are not visualized. Clinical significance Abnormal results: Diagnosis of the etiology of hyperparathyroidism, parathyroid hyperplasia, adenoma localization. People who need to be tested: The chest is short of breath, the hands and feet are numb, and the esophagus feels foreign matter. High results may be diseases: thyroiditis, hypothyroidism precautions Before inspection: Do not wear any metal objects. Inspection process 1. 99mTc-MIBI and Na99mTcO4 (perperate) image subtraction method: firstly, the neck and chest static imaging was performed 5 minutes after intravenous injection of 99mTc-MIBI370MBq (10mCi), and then maintained in the same position, intravenous Na99mTcO4370MBq (10mCi) After 20 minutes, the model was re-examined and CT image fusion was performed. The secondary static image is normalized and subtracted, and the parathyroid lesion after depletion of the thyroid image can be obtained. For ectopic lesions, a marker should be made on the body surface. 2. 99mTc-MIBI dual-phase method: static chest and chest imaging was performed 5 minutes and 2 hours after intravenous injection of 99mTc-MIBI370MBq (10mCi). Delayed imaging of the thyroid gland was significantly reduced, while hypertrophic parathyroid lesions remained clear. Disadvantages of this law: The relationship between the lesion and the thyroid is sometimes unknown. Not suitable for the crowd Severe cardiopulmonary dysfunction should be used with caution. Adverse reactions and risks May cause difficulty breathing.