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Fig. 5 | Egyptian Journal of Neurosurgery

Fig. 5

From: Intra-operative ultrasound (IOUS) value in cases of AVM and cavernoma excision: single-center experience

Fig. 5

IOUS of AVM Case. Color Doppler image showing bidirectional, high-blood flow within the tubular structures, suggestive of blood flow within an AVM (red arrow). It also gives an idea about the depth of resection needed (here up to 3 cm depth) (white arrow). Color Doppler and its relation to the adjacent dural folds (tentorium cerebelli) (green arrow). High pattern of flow in the nidus which exceeds 25 m/s detected by spectral Doppler US (blue arrow)

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