Guttmann's sign

例句：

1. 1.The Guttmann sign is a test used to diagnose certain types of dementia.
   古特曼符号是一种用于诊断某些类型痴呆症的测试。
2. 2. In the study, the researchers found that the Guttmann sign was associated with an increased risk of Alzheimer's disease.
   在这项研究中，研究人员发现古特曼符号与阿尔茨海默病的风险增加有关。
3. 3. The patient's family members were concerned about the Guttmann sign and sought medical advice.
   患者家属对古特曼符号表示担忧，并寻求医疗建议。