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Fig. 2 | Critical Ultrasound Journal

Fig. 2

From: Transcranial Doppler ultrasound in the ICU: it is not all sunshine and rainbows

Fig. 2

a Transcervical window, phased-array probe. Note that the distal internal carotid artery is insonated and that angle correction is not needed in pulsed-wave Doppler. b Transforaminal window, phased- array probe. Note the inverted V configuration of the posterior circulation on color Doppler imaging (coded blue, indicating that blood is moving away from the transducer), depicted by both vertebral arteries (VA) and the basilar artery (BA), showing also the corresponding spectral Doppler on the inferior channel. F: foramen magnum; VA vertebral artery; BA basilar artery. c Transorbital window, phased-array probe. G: ocular globe

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