ArticleEuropean radiology2013
Optimisation of vascular input and output functions in CT-perfusion imaging using 256(or more)-slice multidetector CT.
Article in European radiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Adjusting input arterial function to improve the accuracy of hypoperfusion assessment in computed tomography perfusion (CTP) for stroke: a preliminary study.Quantitative imaging in medicine and surgery · 2025Article
- Preliminary experience of CT imaging of the ischaemic brain penumbra through spectral processing of multiphasic CTA datasets.Scientific reports · 2023Article
- Relation between stroke severity, patient characteristics and CT-perfusion derived blood-brain barrier permeability measurements in acute ischemic stroke.Clinical neuroradiology · 2016Article
- Relation between reperfusion and hemorrhagic transformation in acute ischemic stroke.Neuroradiology · 2015Article
- Predictors of reperfusion in patients with acute ischemic stroke.AJNR. American journal of neuroradiology · 2015Article
- Radiation dose reduction in cerebral CT perfusion imaging using iterative reconstruction.European radiology · 2014Article
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6 authors.
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Abstract
objectivesTo evaluate the accuracy and reproducibility of CT-perfusion (CTP) by finding the optimal artery for the arterial input function (AIF) and re-evaluating the necessity of the venous output function (VOF).
methodsForty-four acute ischaemic stroke patients who underwent non-enhanced CT, CTP and CT-angiography using 256-slice multidetector computed tomography (MDCT) were evaluated. The anterior cerebral artery (ACA), middle cerebral artery (MCA), internal carotid artery (ICA) and basilar artery were selected as the AIF. Subsequently the resulting area under the time-enhancement curve of the AIF (AUCAIF) and quantitative perfusion measurements were analysed by repeated measures ANOVA and subsequently the paired t test. To evaluate reproducibility we examined if the VOF could be deleted by comparing the perfusion measurements using versus not using the VOF (paired t test).
resultsThe AUCAIF and perfusion measurements resulting from the different AIFs showed significant group differences (all P < 0.0001). The ICA had the largest AUCAIF and resulted in the highest mean transient time (MTT) and lowest cerebral blood flow (CBF), whereas the basilar artery showed the lowest cerebral blood volume (CBV). Not using the VOF showed significantly higher CBV and CBF in 66 % of patients on the ipsilateral (P < 0.0001 and P = 0.007, respectively) and contralateral hemisphere (P < 0.0001 and P = 0.019, respectively).
conclusionSelecting the ICA as the AIF and continuing the use of the VOF would improve the accuracy of CTP. KEY POINTS: • Perfusion imaging is an increasingly important aspect of multidetector computed tomography (MDCT). • Vascular input functions were evaluated for CT-perfusion using 256-slice MDCT. • Selecting different arterial input functions (AIFs) leads to variation in quantitative values. • Using the internal carotid artery for AIF provides optimal perfusion values. • Deleting the venous output function would be detrimental for validity.
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