hepatic perfusion imaging

Hepatic vascular perfusion imaging blood pool imaging agent is mainly concentrated in the vascular lumen and sinusoids of the liver after intravenous injection. After a certain period of time, the marked red blood cells exchange with the unlabeled red blood cells in the blood pool of the lesion and reach equilibrium; The time varies according to the size of the lesion, about 30 to 120 minutes. When the complete balance is reached, the radioactivity in the lesion area is higher than that in the normal liver tissue, which can be detected in vitro. Basic Information Specialist Category: Cardiovascular Examination Category: CT Applicable gender: whether men and women apply fasting: not fasting Tips: Before the check: taboo: Prepare the liver blood perfusion phase. Normal value The perfusion of the hepatic blood perfusion phase was normal, and the liver blood pool imaging was normal. Clinical significance Abnormal results perfusion in the hepatic perfusion phase was normal or slightly decreased, and the local radioactivity of the hepatic blood pool imaging lesions after 30 to 60 minutes delay was a typical manifestation of hepatic hemangioma. Need to check patients with hepatic hemangioma. Precautions Forbidden before examination: Prepare the liver blood perfusion phase. Contraindications during examination: intravenous injection should be "shot". Inspection process 1. The patient does not need special preparation; 2. Collection method: Liver blood perfusion phase: “shot” injection from the elbow vein, immediately start collecting, 2~3s/frame, 9~16 frames. Not suitable for the crowd Not suitable for checking the crowd: none.