Acute pulmonary embolism: some noticeable unenhanced CT imaging signs / 中华放射学杂志

ABSTRACT

Objective To describe some unenhanced spiral CT imaging signs that can clue to acute pulmonary embolism.Methods By retrospectively analyzing spiral CT imaging of acute pulmonary embolism proved by clinical treatment in 49 cases, some noticeable abnormal imaging signs were found.Results Among the 49 cases, 10 cases had abnormal attenuation changes in the pulmonary arteries, 6 of them had local high-attenuation centrally and 4 of them had local low-attenuation centrally.Conclusion The final diagnosis of acute pulmonary embolism depends on enhanced CT scan.But for cases that they could not use contrast media or cases that they only underwent unenhanced CT because of nonspecific heart-pulmonary symptom, abnormal attenuation changes of pulmonary arteries can clue to acute pulmonary embolism.