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Neuroimaging in neonatal seizures Volume 17, numéro 1, March 2015

TEST YOURSELF

(1) Which patterns of injury on MRI can be found in a child with hypoxic-ischaemic encephalopathy and how do the patterns relate to neurodevelopmental outcome in later childhood?


(2) For a full-term infant presenting with seizures on day 6 after birth, an intraventricular and thalamic haemorrhage on cranial ultrasound is identified. Which diagnosis should be ruled out and which sequence should be added to the MRI protocol?


(3) Neuroimaging findings in infants with a CNS infection are often dependent on a specific variable, which variable is this?

 

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Answers

(1) The patterns most commonly found in hypoxic-ischaemic encephalopathy are the basal ganglia-thalamic pattern and the watershed pattern. Basal ganglia-thalamic injury is primarily related to motor impairment and watershed injury primarily to cognitive impairment.

 

(2) A cerebral sinovenous thrombosis should be ruled out and an MR venography should be added to the protocol, since absent flow across one of the sinuses will confirm the diagnosis of sinovenous thrombosis.

 

(3) Neuroimaging in infants with CNS infections can show a wide variety of abnormalities, often defined by the organism causing the infection.

 

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