焦磷酸钙菱形结晶在红感光板偏振光下呈蓝白色（弱正双折射）。
This rhomboid shaped crystal of calcium pyrophosphate , which appears bluish-white ( weak positive birefringence ) by polarized light with red plate .
二羟焦磷酸钙晶体沉积症的影像学诊断
Radiological diagnosis of calcium pyrophosphate dihydrate crystal deposition disease
焦磷酸钙