Timing-invariant reconstruction for deriving high-quality CT angiographic data from cerebral CT perfusion data

Radiology
Ewoud SmitMathias Prokop

Abstract

To suggest a simple and robust technique used to reconstruct high-quality computed tomographic (CT) angiographic images from CT perfusion data and to compare it with currently used CT angiography techniques. Institutional review board approval was waived for this retrospective study, which included 25 consecutive patients who had had a stroke. Temporal maximum intensity projection (tMIP) CT angiographic images were created by using prior temporal filtering as a timing-insensitive technique to produce CT angiographic images from CT perfusion data. The temporal filter strength was optimized to gain maximal contrast-to-noise ratios (CNRs) in the circle of Willis. The resulting timing-invariant (TI) CT angiography was compared with standard helical CT angiography, the arterial phase of dynamic CT angiography, and nonfiltered tMIP CT angiography. Vascular contrast, image noise, and CNR were measured. Four experienced observers scored all images for vascular noise, vascular contour, detail of small and medium arteries, venous superimposition, and overall image quality in a blinded side-by-side comparison. Measurements were compared with a paired t test; P ≤ .05 indicated a significant difference. On average, optimized temporal filter...Continue Reading

References

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Citations

Jun 6, 2013·European Radiology·Anja G van der KolkJaco J M Zwanenburg
Apr 27, 2013·AJNR. American Journal of Neuroradiology·A M J FrölichP Schramm
Jun 27, 2015·Radiology·Rashindra ManniesingMathias Prokop
Nov 6, 2014·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Sebastian E BeyerWieland H Sommer
Aug 20, 2014·BioMed Research International·Elyas GhariqMarianne A A van Walderveen
Oct 31, 2014·AJNR. American Journal of Neuroradiology·H G J KortmanF J A Meijer
Jun 4, 2016·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Hans G J KortmanFrederick J A Meijer
Dec 21, 2016·The British Journal of Radiology·Takashi ShirasakaHiroshi Honda
Mar 12, 2016·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Sonu BhaskarChristopher Levi
Mar 10, 2017·Topics in Magnetic Resonance Imaging : TMRI·Scott B Raymond, Pamela W Schaefer
Oct 4, 2017·Neurosurgery·Amy LinDaniel M Mandell
Sep 29, 2019·Journal of Neurosurgery·Sergio BrasilRicardo de Carvalho Nogueira
Apr 22, 2018·Neurology·Wolfgang G KunzKolja M Thierfelder
Oct 1, 2017·Neuroradiology·E M M SantosUNKNOWN PRove-IT investigators
Aug 10, 2019·AJNR. American Journal of Neuroradiology·M MeijsF J A Meijer
Oct 31, 2019·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Kaustubh LimayeSantiago Ortega-Gutierrez

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