Transcranial Sonography and Cerebral Circulatory Arrest in Adults: A Comprehensive Review

Figure 3

Basilar artery shows a systolic spikes pattern. Note that peak intensity is lower than 50 cm/sec and peak width lower than 200 msec. This pattern was obtained by insonation through the foramen magnum at a depth of 82 mm in a 65-year-old female who presented a severe hemorrhagic stroke.