Conclusion CT has significant value in localizing and qualifying diagnosis in parotid diseases, and can promote the accuracy diagnosis in malignant tumor of parotid gland.

结论CT扫描对腮腺区肿块的定位、定性有重要价值，可以提高腮腺区恶性肿瘤的诊断符合率。

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To separate the proximal splenic artery from the distal one by arteria pancreatic magna and to inject stimulator respectively is helpful for localizing the tumor in pancreas tail.

以胰大动脉为界区分脾动脉近段与远段分别激发有助于胰尾肿瘤的定位。

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