Replies to This Discussion

Permalink Reply by Dorothy Bulas on May 17, 2011 at 3:24pm

RI can be extremely helpful in neonatal brain imaging.  Changes in RI can be seen with hydrocephalus, HIE, infarcts... the RI's however do change dependent on timing of the exam, and knowledge of the hemodynamics of the heart and body are important as can influence the cranial Doppler tracing.

Whenever reversal of diagstolic flow is noted, consider PDA or other shunts (VV of Galen, hemangioendothelioma)

Extremely elevated ICP can cause reversal of diastolic flow as well.

 

We use RI routinely for all neonates with ventriculomegaly to help the NICU determine when to tap or place a drain for progressive hydrocephalus.. nice method of differentiating atrophy from HC>

 

Low RI can be seen with HIE in the first 48 hours useful in predicting severity of HIE (<.6 )

 

Abnormal asymmetric flow can be seen with infarcts.

 

Permalink Reply by Rob Goodman on May 17, 2011 at 3:41pm

Thanks Dorothy,

Do you do RIs routinely on all neonates or just the large heads/first 48hrs of life?

Dorothy Bulas said:

RI can be extremely helpful in neonatal brain imaging.  Changes in RI can be seen with hydrocephalus, HIE, infarcts... the RI's however do change dependent on timing of the exam, and knowledge of the hemodynamics of the heart and body are important as can influence the cranial Doppler tracing.

Whenever reversal of diagstolic flow is noted, consider PDA or other shunts (VV of Galen, hemangioendothelioma)

Extremely elevated ICP can cause reversal of diastolic flow as well.

 

We use RI routinely for all neonates with ventriculomegaly to help the NICU determine when to tap or place a drain for progressive hydrocephalus.. nice method of differentiating atrophy from HC>

 

Low RI can be seen with HIE in the first 48 hours useful in predicting severity of HIE (<.6 )

 

Abnormal asymmetric flow can be seen with infarcts.