The Dynamic CT Study of Peripheral Lung Cancer and Pulmonary Inflammatory Pseudotumor / 实用放射学杂志

ABSTRACT

Objective To investigate the dynamic CT features of peripheral lung cancer (PLC) and pulmonary inflammatory pseudotumor(IPT).Methods 23 patients with PLC and 6 patients with IPT were undergone plain and dynamic enhanced CT scans (beginning at 30 s after the onset of injection,serial scan were obtained at 30 s intervals within 180 s) before surgery or administration of antibiotic.Results The average CT values of plain CT,CT enhanced attenuation at 30 s and 90 s were significantly different between PLC and IPT.There were no significant decline following peak enhancement in IPT but PLC within 180 s.Conclusion The comprehensive analysis of plain CT value,enhanced CT value at 30 s,and the decreasing rate after 90 s of administration of contrast material may be useful in differential diagnosis between PLC and IPT.