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作者应用高分辨力薄层断面CT 扫描对50例病人进行了检查,其中20例病史1～3年经开胸肺活检确诊为隐原性纤维性肺泡炎(CFA),30例为病程18个月的系统性硬化病人。使用Elscint 2002扫描机,扫描时间5秒,取仰卧位,在深吸气状态下由肺尖至肺底,以层厚3mm、间隔10mm 扫描5秒。结果在胸部X 线片示双肺下野有广泛阴影的20例CFA 病人中,16例(80%)CT 示:双下肺周围呈新月形分布,4例变化非常广泛但无此种特征。30例系统性硬化病人中仅13例(43%)有胸部X 线异常,而CT 显示明显肺异常者20例(66%),因此用本文特定条件下的CT 诊断纤维性肺泡炎优于胸部X 线片。
Fifty patients were examined by high-resolution thin-section CT scan. Among them, 20 cases had a history of open-chest thoracic biopsy for cryptogenic fibromyalgia (CFA) in 1 to 3 years and 30 in 18 Systemic sclerosis of the month. Using the Elscint 2002 scanner, the scan time was 5 seconds and the supine position was taken. From the apical point to the bottom of the lungs in deep inspiration, a scan was made for 5 seconds at a layer thickness of 3 mm and an interval of 10 mm. Results Of the 20 CFA patients with widespread shadows in the lower lungs on the chest radiographs, 16 (80%) CT showed a crescent-shaped distribution around the lower double lung, with four very variable but no such features. Thirteen cases (43%) of 30 patients with systemic sclerosis had chest X-ray abnormalities, whereas CT showed 20 cases (66%) of patients with clear lung abnormalities. Therefore, the CT diagnosis of fibrosing alveolitis under the specific conditions of this paper is superior to the chest X-ray film.