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Fig. 3 | Malaria Journal

Fig. 3

From: Mechanisms of Transcranial Doppler Ultrasound phenotypes in paediatric cerebral malaria remain elusive

Fig. 3

Representative images of Transcranial Doppler Ultrasound phenotypes in children with cerebral malaria. A Normal middle cerebral artery (MCA) TCD flow velocities and waveform for a 3-year-old child. B TCD with increased systolic flow velocity, increased diastolic flow velocity, Lindegaard ratio (LR) < 3. These findings represent a child categorized as having hyperaemia. C TCD with decreased systolic flow velocity, decreased diastolic flow velocity, decreased mean flow velocity. These findings represent a child categorized as having low flow. D TCD with normal systolic flow velocity, reduced diastolic flow velocity, increased pulsatility index. These findings represent a child categorized as having microvascular obstruction. E TCD with increased systolic flow velocity, increased diastolic flow velocity, LR > 3. These findings represent a child categorized as having cerebral vasospasm. F TCD with increased systolic flow velocity, increased diastolic flow velocity, increased mean flow velocity in the basilar artery. At the same time, all measurements in the MCAs were normal. These findings represent a child categorized as having isolated posterior circulation high flow

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