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Improved Turnaround Times | Median time to first decision: 12 days

Research ArticleBrain

CT Angiographic Source Images: Flow- or Volume-Weighted?

M. Sharma, A.J. Fox, S. Symons, A. Jairath and R.I. Aviv
American Journal of Neuroradiology February 2011, 32 (2) 359-364; DOI: https://doi.org/10.3174/ajnr.A2282
M. Sharma
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A.J. Fox
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S. Symons
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A. Jairath
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R.I. Aviv
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    Fig 1.

    A, Fitted regression line and scatterplot of hypoattenuation volumes of CTA-SI and CBF defect volumes in cubic centimeters. B, logPCCT hypoattenuation volumes and logCBV defect volumes.

  • Fig 2.
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    Fig 2.

    Plots of residuals for CBF defect volumes (A) and logCBV defect volumes (B) based on the linear regression equation. The residual is the difference between the predicted and actual observed value.

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    Fig 3.

    CBF (A) and CBV (B) maps. C, The hypoattenuation of CTA source image and gray-white matter differentiation loss correspond more closely with the CBF than with the CBV map. D, PCCT hypoattenuation corresponds most closely with CBV defect.

  • Fig 4.
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    Fig 4.

    CBF map (A) reveals a large defect within the right MCA territory, while the CBV map (B) shows a substantially smaller region of infarction. C, CTA source image show hypoattenuation and gray-white matter differentiation loss in the right MCA territory corresponding to the CBF defect. D, PCCT image demonstrates subtle questionable posterior Sylvian hypoattenuation.

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American Journal of Neuroradiology: 32 (2)
American Journal of Neuroradiology
Vol. 32, Issue 2
1 Feb 2011
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M. Sharma, A.J. Fox, S. Symons, A. Jairath, R.I. Aviv
CT Angiographic Source Images: Flow- or Volume-Weighted?
American Journal of Neuroradiology Feb 2011, 32 (2) 359-364; DOI: 10.3174/ajnr.A2282

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CT Angiographic Source Images: Flow- or Volume-Weighted?
M. Sharma, A.J. Fox, S. Symons, A. Jairath, R.I. Aviv
American Journal of Neuroradiology Feb 2011, 32 (2) 359-364; DOI: 10.3174/ajnr.A2282
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