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Relationship between transcranial Doppler and CT data in acute intracerebral hemorrhage
Joan Martí-Fàbregas1, Roberto Belvís, Esteve Guàrdia
1Department of Neurology, Cerebrovascular Unit, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain.
Insights
Transcranial Doppler (TCD) pulsatility index (PI) correlates with CT findings in acute intracerebral hemorrhage (ICH). Increased PI may indicate intracranial hypertension and mass effect, offering a noninvasive assessment tool.
Area of Science:
- Neuroimaging
- Neurology
- Medical Devices
Background:
- Intracerebral hemorrhage (ICH) diagnosis relies on CT scans.
- A noninvasive method to correlate with CT findings in ICH is needed.
Purpose of the Study:
- To determine which transcranial Doppler (TCD) variables correlate with CT findings in patients with acute ICH.
Main Methods:
- Prospective study of 51 patients with acute supratentorial ICH.
- CT and TCD performed within 12 hours of symptom onset.
- Analyzed TCD pulsatility index (PI) from middle cerebral arteries in affected and unaffected hemispheres.
Main Results:
- TCD pulsatility index (PI) positively correlated with hematoma volume, hypoattenuation, and total ICH volume.
- PI was increased in patients with intraventricular hemorrhage.
- PI correlated with midline shift, suggesting mass effect.
Conclusions:
- TCD parameters, particularly PI, correlate with CT findings in acute ICH.
- Elevated PI likely reflects intracranial hypertension and mass effect.
- Further research is needed to establish clinical applications of TCD in ICH management.
Background And Purpose:
It would be useful to have a noninvasive test for correlation with CT findings in patients with intracerebral hemorrhage (ICH). We determined which transcranial Doppler (TCD) variables are related to which CT data in patients with ICH.
Methods:
We prospectively included 51 patients (age +/- SD, 66.2 +/- 12.4 years; 30 men, 21 women) with first-ever supratentorial, nontraumatic ICH. CT and TCD examination were performed in the acute stage (less than 12 hours from symptom onset). TCD recordings were obtained from the middle cerebral arteries, and the following variables were analyzed: systolic (Vs), diastolic (Vd), mean (Vm) velocities, and pulsatiliy index from the affected (a) and unaffected (u) hemispheres.
Results:
PIs obtained for both hemispheres were positively correlated with hematoma volume (aPI, r=0.43, P=.001; uPI, r=0.44, P=.001), volume of hypoattenuation (aPI r=0.64, P <.0001; uPI, r=0.39, P=.005), total volume (aPI, r=0.59, P <.0001; uPI, r=0.48, P <.0001), and midline shift (aPI, r=0.28, P=.04; uPI, r=0.29, P=.03). Both PIs were increased in patients with intraventricular hemorrhage (aPI, P=.01; uPI P=.004). No TCD parameter was correlated with ventricular size.
Conclusion:
Most TCD parameters were correlated with CT data in the acute stage of ICH. An increase in PI probably reflects intracranial hypertension and mass effect. Further studies are needed to determine the clinical application of our findings.
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