lymphography

Lymphatic imaging shows the anatomical distribution of the lymphatic system, which is simple, fast, safe and non-invasive. Not only can provide information on the structural changes of the lymphatic system, but also can dynamically display the lymphatic reflux function, so it has unique value in identifying lymphedema and monitoring the efficacy. Basic Information Specialist classification: Oncology examination classification: microscopy Applicable gender: whether men and women apply fasting: not fasting Tips: Do not check after a meal and after strenuous exercise. Normal value After the injection of imaging agent, the lymphatic reflux is smooth, the left and right are basically symmetrical, the lymphatic chain image is coherent; the radioactive distribution in the lymph node is even; the liver, kidney and bladder can be developed. Clinical significance Abnormal results to understand the anatomical distribution and physiological function of lymph nodes; diagnosis of tumor lymph node metastasis, such as lymphatic imaging, local lymph node image loss or radioactive uptake is significantly reduced; adjuvant diagnosis of malignant lymphoma involves lymph node radioactivity reduction or even defect, image enlargement, may be Multiple lymph node fusion; the diagnosis of limb lymphedema, lymphatic imaging shows that the lymph nodes are not developed for a long time or the lymphatic chain image is interrupted, with distant radioactivity retention or collateral circulation, skin reflow. Patients in need of examination who have malignant or benign lymphoid diseases or tumors need to be tested for clinical treatment options and prognosis. Precautions Taboo before the test: Do not check after a meal and after strenuous exercise. Requirements for inspection: Pay attention to the correct posture and follow the doctor's request. Inspection process Injecting radioactive colloids in the direction of the heart or the interstitial space of the tissue (particle diameter <2nm = or high molecular substance, can enter the capillary lymphatics through the endothelium of the lymphatic vessels and the pinocytosis of endothelial cells, draining to the lymph nodes, partially staying there, It is taken up by the sinusoidal cells; the remaining lymphatic output is advanced, and is gradually taken up by the lymph nodes, and finally reaches the thoracic duct and enters the blood circulation and is swallowed by the liver spleen mononuclear macrophages. Not suitable for the crowd Inappropriate people: pregnant women and those who are allergic to imaging agents are not suitable.

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