后方伴声影
Behind with sound shadow
以上为机器翻译结果，长、整句建议使用 人工翻译 。
扩张的胆囊管内出现强回声团，后方伴声影，是胆囊管结石直接征象，但其超声检查的敏感性不高；
Strong echoes in the dilated cystic ducts with shadows in posterior were the direct sign of the cystic duct lithes, but the sensitivity was very low.
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