Journal of Cerebrovascular and Endovascular Neurosurgery

Korean Society of Cerebravascular Surgeons (대한뇌혈관외과학회)
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Evaluation of the Accuracy in Maximum Intensity Projection Images of Cerebral Computed Tomographic Angiography for the Diagnosis of Cerebral Vasospasm Following Subarachnoid Hemorrhage, in Comparison to Digital Subtraction Angiography

  • Kim, Jong-Hoon (Department of Neurosurgery, Yeungnam University Medical Center) ;
  • Yi, Ji-Hyun (Department of Radiology, Yeungnam University Medical Center) ;
  • Chang, Chul-Hoon (Department of Neurosurgery, Yeungnam University Medical Center) ;
  • Jung, Young-Jin (Department of Neurosurgery, Yeungnam University Medical Center)
  • Received : 2017.03.30
  • Accepted : 2018.03.11
  • Published : 2018.03.31
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Abstract

Objective : The purpose of this retrospective study is to determine the accuracy of maximum intensity projection (MIP) images of computed tomographic angiography (CTA) for diagnosis of cerebral vasospasm (CV) following subarachnoid hemorrhage (SAH) compared with that of digital subtraction angiography (DSA). Materials and Methods : For patients admitted to our hospital for SAH, MIP images of CTA and DSA were checked at admission, and images were taken again 1 week later. This protocol was used in 39 cases. MIP images of CTA and DSA examinations were reviewed by two independent readers. Results : Accuracy of MIP images of CTA in various arterial segments, using DSA as the gold standard: the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy for different segments varied from 84 to 97, 33-100, 84-100%, 25-85, and 79-97%, respectively, for readers. Accuracy of CTA in various vasospasm severity, using DSA as the gold standard: the sensitivity, specificity, PPV, NPV, and accuracy for different vasospasm severity varied from 44 to 100, 69-100, 36-100%, 61-100, and 88-100%, respectively, for readers. Accuracy of CTA in central segments versus peripheral segments, using DSA as the gold standard: the sensitivity, specificity, PPV, NPV, and accuracy for central segments and peripheral segments varied from 90 to 94, 68-83, 93-97%, 56-69, and 87-93%, respectively, for readers. Conclusion : MIP imaging of CTA is a useful modality when diagnosing CV after SAH.

Keywords

References

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