Color-Mapping of 4D-CTA for the Detection of Cranial Arteriovenous Shunts

AJNR. American Journal of Neuroradiology
M MeijsF J A Meijer

Abstract

4D CT angiography is increasingly used in clinical practice for the assessment of different neurovascular disorders. Optimized processing of 4D-CTA is crucial for diagnostic interpretation because of the large amount of data that is generated. A color-mapping method for 4D-CTA is presented for improved and enhanced visualization of the cerebral vasculature hemodynamics. This method was applied to detect cranial AVFs. All patients who underwent both 4D-CTA and DSA in our hospital from 2011 to 2018 for the clinical suspicion of a cranial AVF or carotid cavernous fistula were retrospectively collected. Temporal information in the cerebral vasculature was visualized using a patient-specific color scale. All color-maps were evaluated by 3 observers for the presence or absence of an AVF or carotid cavernous fistula. The presence or absence of cortical venous reflux was evaluated as a secondary outcome measure. In total, 31 patients were included, 21 patients with and 10 without an AVF. Arterialization of venous structures in AVFs was accurately visualized using color-mapping. There was high sensitivity (86%-100%) and moderate-to-high specificity (70%-100%) for the detection of AVFs on color-mapping 4D-CTA, even without the availabili...Continue Reading

References

Feb 20, 2010·AJNR. American Journal of Neuroradiology·C M StrotherM L Lindstrom
Apr 6, 2011·Neuroradiology·Peter W A WillemsTimo Krings
Jan 10, 2013·Clinical Neurology and Neurosurgery·Tim R BeijerFrederick J A Meijer
Jan 29, 2013·Journal of Neurology, Neurosurgery, and Psychiatry·Bruce C V CampbellStephen M Davis
Oct 31, 2014·AJNR. American Journal of Neuroradiology·H G J KortmanF J A Meijer
Nov 17, 2017·Scientific Reports·Midas MeijsRashindra Manniesing
Mar 14, 2018·World Neurosurgery·Midas MeijsFrederick Jan Anton Meijer

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Citations

Oct 31, 2020·AJNR. American Journal of Neuroradiology·K H NarsinhD L Cooke

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