Preliminary study of whole-brain CT perfusion imaging in patients with intracranial tumours adjacent to large blood vessels

Chen, T.; Guo, D.; Zheng, Fang; Zhong, Wansi; Zhao, Jian Nong; Jiang, Yuzhu

doi:10.1016/j.crad.2013.08.010

Cited by 12 publications

(9 citation statements)

References 25 publications

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“…4D-CTA as part of whole brain CT perfusion studies for evaluating intracranial tumours adjacent to large blood vessels has been described as a ‘one-stop’ examination. 29 This includes a conventional non-enhanced CT image, enhanced CT images, CT perfusion images and 4D-CTA images that can be obtained simultaneously.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of four-dimensional CT angiography in detection and characterisation of arteriovenous malformations and dural arteriovenous fistulas

et al. 2015

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A retrospective review was made to assess the accuracy of four dimensional CT angiogram (4D-CTA) in diagnosis of arteriovenous malformations (AVM) and dural arteriovenous fistulas (DAVF), with catheter-based digital-subtraction angiogram (DSA) being gold standard. 33 pairs of investigations (DSA and 4D-CTA) were performed primarily for suspicion of AVM/DAVF. Based on blinded reports, sensitivity and specificity for detection of AVM/DAVF were 77% (95% CI: 46-95%) and 100% (95% CI: 83-100%) respectively. Positive predictive value was 100% (95% CI: 69-100%) and negative predictive value 87% (95% CI: 66-97%). 4D-CTA is a practical minimally-invasive technique for evaluating cerebrovascular pathologies. There is good agreement between the findings of 4D-CTA and DSA despite the differences in temporal and spatial resolutions. 4D-CTA may obviate the need for DSA in a subgroup of patients who would otherwise have undergone this invasive investigation, which carries a risk of important complications.

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Section: Discussionmentioning

confidence: 99%

Accuracy of four-dimensional CT angiography in detection and characterisation of arteriovenous malformations and dural arteriovenous fistulas

et al. 2015

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“…The limited scan coverage (2-4 cm coverage) is another limitation of PCT, making whole tumor assessment difficult. However, the advent of shuttle mode imaging and large multi-row detector technology enables whole brain PCT coverage [52,53]. Differences in PCT protocol (e.g.…”

Section: Discussion: Strengths and Challenges Of Pctmentioning

confidence: 99%

Dynamic perfusion CT in brain tumors

Yeung

Yartsev

Fainardi

et al. 2015

European Journal of Radiology

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“…Generally, the CBF and CBV are increased in the solid part of the tumor and decreased in the necrotic parts. Prior studies showed significantly increased CBF and CBV with prolonged TTP and MTT in meningioma itself [3] . In one prior study, ischemia at parenchymal edema around the meningioma has been reported [7] .…”

Section: Discussionmentioning

confidence: 96%

“…By using modern multi-slice CT scanners, it is now common to cover a large area or even entire brain for CTP, so it is not uncommon to detect abnormal perfusion in brain stem and posterior fossa. Newer scanners (eg, 320 row detector) can cover 160 mm isotropic volume data of the entire brain [3] . The main physiologic parameters evaluated by CTP are CBF, CBV, and MTT.…”

Section: Discussionmentioning

confidence: 99%

Spinal canal meningioma mimicking posterior fossa ischemia on CT perfusion: A CT perfusion pitfall

Sotoudeh

2018

Radiology Case Reports

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The recent approach to treat acute stroke is to extend treatment window in patients with salvageable peri-infarct ischemia which increases the application of the perfusion imaging, specifically computed tomography perfusion (CTP). In this paper, I am presenting a case of left middle cerebral artery infarction which was evaluated by CTP under “code stroke.” The patient had an incidental spinal canal meningioma which was out of field of view in CTP but mimicked right cerebellar ischemia on CTP. Although ischemia has been previously reported within the peripheral parenchymal edema surrounding a meningioma, in this patient there was no evidence of edema in the right cerebellum on magnetic resonance imaging. I believe the CTP findings are secondary to steal phenomena at right vertebral artery or compression upon the venous plexus. Recently, by using modern computed tomography scanners, it is common to cover the entire brain in CTP. The emergency radiologist should be aware of this pitfall that spinal canal pathologies which are out of field of view can mimic posterior fossa ischemia.

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Preliminary study of whole-brain CT perfusion imaging in patients with intracranial tumours adjacent to large blood vessels

Cited by 12 publications

References 25 publications

Accuracy of four-dimensional CT angiography in detection and characterisation of arteriovenous malformations and dural arteriovenous fistulas

Accuracy of four-dimensional CT angiography in detection and characterisation of arteriovenous malformations and dural arteriovenous fistulas

Dynamic perfusion CT in brain tumors

Spinal canal meningioma mimicking posterior fossa ischemia on CT perfusion: A CT perfusion pitfall

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