Volume : IX, Issue : IV, April - 2019

CORRELATION STUDY OF TRANSCRANIAL DOPPLER WITH MRA AND CV DOPPLER IN ANTERIOR CIRCULATION ISCHEMIC STROKES

Prof. Dr. M. Jawahar, Dr. Saranya Masilamani, Dr. Lakshmi Narasimhan

Abstract :

TCD using pulsed doppler transducer can show the spectral flow waveforms, blood flow direction, velocities and intensity in the intracereal vessels,thereby we can assess the significance of intracranial vessel stenosis and the existing collateral circulation. OBJECTIVES: To study correlation of transcranial Doppler study with MR angiography and CV Doppler in ischaemic strokes. METHODOLOGY : We studied 48 patients admitted with ischaemic stroke in neurology department . MRI with MRA , CV Doppler and TCD studies were performed .TCD analysis showed decrease in mean flow velocity( MFV ) in the upstream vessels distal to the occlusion with increase in pulsatility index(PI).There is a definite correlation between magnitude of extracranial carotid stenosis and intracranial MCA&ACA bloodflow reduction as assessed by TCD.Intra cranial vessel stenosis can be very well delineated by regional mean bloodflow reduction,increased flow velocity and increased pulsatility index in the upstream vessels2,5. RESULTS : Of the 48 patients,15 patients had extracranial and 27 patients had intracranial occlusion and rest had botetween eh. In intracranial proximal ICA occlusion , the decrease in MFV in ipsilateral MCA and ACA was 70% and 40% respectively. In MCA occlusions the decrease in MFV in ipsilateral MCA was 60%. Among patients with intracranial ICA occlusions , the increase in PI in ipsilateral MCA and ACA was 58% and 47% respectively . In MCA occlusions the increase in PI in ipsilateral MCA was 40% Among patients with extracranial CCA and ICA occlusion decrease in MFV and increase in PI was 70% and 60% in ipsilateral MCA and ACA respectively . Conclusion : The statistical coefficient for mean flow velocity was p =0.662 / P <0.05 and that for pulsatility index was p=0.541 / P < 0.05 . Thereby TCD provides insight into a wide range of intra and extracranial vascular pathologic conditions and their effects on cereal hemodynamics2,5

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

CORRELATION STUDY OF TRANSCRANIAL DOPPLER WITH MRA AND CV DOPPLER IN ANTERIOR CIRCULATION ISCHEMIC STROKES, Prof.Dr.M.Jawahar, Dr.Saranya Masilamani, DR.Lakshmi Narasimhan INDIAN JOURNAL OF APPLIED RESEARCH : Volume-9 | Issue-4 | April-2019

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