Conclusion There are varied clinical manifestations in pneumothorax patients with thoracic X-ray negative. CT was the best diagnosis way of the disease.
结论胸片阴性的气胸患者，临床表现多种多样，CT是诊断该病的最佳方法。
Processing the aluminum weld image from the scanning of the X ray negative can derive the binary image of the weld defects.
利用X射线底片扫描成像法得到铝合金焊缝图像，再通过图像处理方法即可得到焊接缺陷二值图象。
In the female osteoarthritis patients, the serum testosterone level had negative correlation with the ISOA, the severe degree score of the X-ray manifestation and the symptomatic score of TCM.
女性肾阳虚型骨性关节炎患者血清睾酮水平的高低与骨关节炎严重性指数（ISOA）、X线表现轻重程度及中医症状评分负相关。
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