The Application of Spiral CT for the Diagnosis of Acute Pulmonary Embolism / 实用放射学杂志

ABSTRACT

Objective To study the diagnostic evaluation of spiral CT for acute pulmonary embolism(PE).Methods 24 patients with PE were scanned with SCT(Philips AVEL.)pre-and post-injection of 100 ml contrast medium(Ultravist or Omnipaque 300 mgI/ml)from elbow vein.Enhanced CT scans were started after injection of 15 and 30 seconds respecting.Results The indirect signs on plain CT image werelung-making sparse in 12 cases;lesion of pulmonary infarction in 11 cases;pulmonary hypertension signs in 3 cases;pleural thickening in 4 cases;pleural effusions in 8 cases.The direct signs on enhanced CT images wereIntraluminal filling defect (mural filling defect in 32 vessels;partial filling defect in 30 vessels;total occlusion in 92 vessels and central filling defect that was railway-track sign in 15 vessels)and smaller caliber of pulmonary artery in 14 vessels.Conclusion Enhanced pulmonary SCT angiography is the safe,quick and effective imagilogic examination for acute PE.