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European Radiology

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01-11-2017 | Neuro

The value of whole-brain CT perfusion imaging and CT angiography using a 320-slice CT scanner in the diagnosis of MCI and AD patients

Authors: Bo Zhang, Guo-jun Gu, Hong Jiang, Yi Guo, Xing Shen, Bo Li, Wei Zhang

Published in: European Radiology | Issue 11/2017

Abstract

Objectives

To validate the value of whole-brain computed tomography perfusion (CTP) and CT angiography (CTA) in the diagnosis of mild cognitive impairment (MCI) and Alzheimerʼs disease (AD).

Methods

Whole-brain CTP and four-dimensional CT angiography (4D-CTA) images were acquired in 30 MCI, 35 mild AD patients, 35 moderate AD patients, 30 severe AD patients and 50 normal controls (NC). Cerebral blood flow (CBF), cerebral blood volume (CBV), mean transit time (MTT), time to peak (TTP), and correlation between CTP and 4D-CTA were analysed.

Results

Elevated CBF in the left frontal and temporal cortex was found in MCI compared with the NC group. However, TTP was increased in the left hippocampus in mild AD patients compared with NC. In moderate and severe AD patients, hypoperfusion was found in multiple brain areas compared with NC. Finally, we found that the extent of arterial stenosis was negatively correlated with CBF in partial cerebral cortex and hippocampus, and positively correlated with TTP in these areas of AD and MCI patients.

Conclusions

Our findings suggest that whole-brain CTP and 4D-CTA could serve as a diagnostic modality in distinguishing MCI and AD, and predicting conversion from MCI based on TTP of left hippocampus.

Key Points

• Whole-brain perfusion using the full 160-mm width of 320 detector rows

• Provide clinical experience of 320-row CT in cerebrovascular disorders of Alzheimerʼs disease

• Initial combined 4D CTA-CTP data analysed perfusion and correlated with CT angiography

• Whole-brain CTP and 4D-CTA have high value for monitoring MCI to AD progression

• TTP in the left hippocampus may predict the transition from MCI to AD

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Title: The value of whole-brain CT perfusion imaging and CT angiography using a 320-slice CT scanner in the diagnosis of MCI and AD patients
Authors: Bo Zhang
Guo-jun Gu
Hong Jiang
Yi Guo
Xing Shen
Bo Li
Wei Zhang
Publication date: 01-11-2017
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 11/2017
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-017-4865-1

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

The value of whole-brain CT perfusion imaging and CT angiography using a 320-slice CT scanner in the diagnosis of MCI and AD patients

Abstract

Objectives

Methods

Results

Conclusions

Key Points

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Objectives

Methods

Results

Conclusions

Key Points

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