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Ｘ线胸片是尘肺诊断的主要客观依据，而尘肺Ｘ线检查必须使用高仟伏摄影，因此高质量的高仟伏胸片是尘肺诊断的关键。河北省推广尘肺高仟伏投照技术已１０年。为摸清各市尘肺投照情况，提高胸片质量，我们抽查了２８７张胸片。主要为近二年投照的各期尘肺胸片，井对其进行质量?
X-ray chest is the main objective evidence of pneumoconiosis diagnosis, and pneumoconiosis X-ray examination must use high thousands of volts photography, high-quality high thousands of volts chest X-ray diagnosis of pneumoconiosis is the key. Hebei Province to promote pneumoconiosis thousands of volts projection technology has been 10 years. In order to find out the situation of pneumoconiosis in cities and improve the quality of chest radiograph, we checked 287 chest radiographs. Mainly for the past two years, the various stages of pneumoconiosis chest, and its quality?