摘要
目的 探讨严重急性呼吸综合征 (SARS)的早期X线和CT表现。方法 对 2 8例SARS患者的早期X线和CT表现进行分析。患者在发病 1～ 3d内行X线及CT检查。CT检查包括常规螺旋扫描和高分辨率CT(HRCT)。结果 2 8例中胸部CT检查均有异常所见。X线胸片发现病变者占6 0 7% (17/2 8)。影像表现可分为 :(1)单发小片状病灶 :占 82 1% (2 3/2 8)。在CT影像上病变分为 3种形态 :①类圆形磨玻璃样密度病灶 2 0例 ;②肺小叶形态的磨玻璃样密度病灶 2例 ;③小片状实变影像 1例。 (2 )多发小片状磨玻璃样病灶 2例。 (3)大片状影像 3例。 2 8例患者共发现 31个病灶 ,其分布上叶 7个 ,占 2 2 6 % ;中叶 3个 ,占 9 7% ;下叶 2 1个 ,占 6 7 7%。病灶最大径多为 2 0～ 3 5cm。结论 SARS早期X线和CT主要表现为肺内单发小片状影像。CT显示病变的形态为类圆形磨玻璃样密度病灶最为多见。
Objective To study the early X-ray and CT findings of severe acute respiratory syndrome(SARS). Methods Chest radiography and CT were performed in 28 patients with SARS within 1 to 3 days after onset. CT examinations included conventional spiral CT and HRCT. The findings on the radiography and CT images were analyzed. Results Abnormal CT findings were detected in all patients, but chest X-ray abnormalities were observed in only 17 cases (60.7%,17/28).Single small focal patchy opacity was found in 23 cases (82.1%,23/28) on CT. Among them, oval ground-glass opacities were found in 20 cases, lobular distribution ground-glass opacities in 2 cases, and small patchy consolidation in 1 case. Multiple focal ground-glass opacities were found in 2 cases and extensive opacities in 3 cases. 31 lesions were found in these 28 cases and their distributions were as follows: Upper lobes in 22.6%, middle lobe in 9.7% and lower lobes in 67.7%. The maximum diameter ranged from 2.0 ～ 3.5 cm. Conclusion The main imaging features of severe acute respiratory syndrome on the early stage is focal patchy opacities. Oval small ground-glass opacities are the most dominant morphological findings on CT.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2003年第7期597-599,共3页
Chinese Journal of Radiology
