echoless

1. There was significant difference of D-dimer between granule group and light spot group or echoless group ( P < 0.01).
   粗颗粒组分别与细光点组、无回声组D-二聚体比较，所有P<0.01，也有高度显著性差异。
2. When the main veins were infiltrated, there were tubular structrues of helminthoid echoless area ( 38%) around them.
   门脉主干受侵时，其周围可见多数蠕虫样无回声的管状结构（38%）。
3. It shows craniopharyngioma echoless and without any color flow signals.
   颅咽管瘤表现为无回声，边界清楚，未见血流信号。
4. It shows hemangioblastoma more echoless images and without any color flow signals. 3.
   血管母细胞瘤表现为以无回声为主的混合回声，其内未见彩色血流信号。
5. It shows metastatic tumors with clear boundary, high echo or circle high echo outside and low echo to echoless inside, without color flow signals and with a wide-arranging edema.
   转移瘤边界均清楚，呈高回声或周边为环状高回声、内部为低回声，均未见彩色血流信号，周围可见大范围的水肿脑组织。
6. It shows AVM with high echo and echoless like a honeycombing, indiscriminate color flow signals in echoless area and no edema echo.
   AVM表现为高回声与无回声混杂的蜂窝样回声，无回声内可见紊乱的彩色血流信号，周边未见明显水肿脑组织。

adj

1. having or producing no echo
   1. the echoless darkness