Abstract：
:This technical note describes a novel CT scan protocol that includes a non-enhanced CT, dynamic CTA, and perfusion of the whole brain and CTA of the carotid arteries using a 320-row area detector CT scanner, with a unique contrast injection and acceptable radiation exposure dose in patients presenting with acute ischemic stroke. The acquisition parameters and reconstruction parameters will be discussed including the use of model-based iterative reconstruction (MBIR), time summing (tMIP), and subtraction techniques to optimize the results of this protocol.Key Points• Scanning on a 320-row area detector CT can achieve both brain perfusion with dynamic angiography and reconstructed arterial and venous CTA, and supra aortic trunk angiography, in a single acquisition. • It provides, in a single exam, a full diagnostic workup, i.e., all the acquisitions that are needed to make a quick decision, with reasonable exposure to ionizing radiation and reduced amount of medium contrast, in case of acute ischemic stroke presentation.
journal_name
Eur Radioljournal_title
European radiologyauthors
Ognard J,Dissaux B,Haioun K,Nonent M,Gentric JC,Ben Salem Ddoi
10.1007/s00330-019-06041-xsubject
Has Abstractpub_date
2019-09-01 00:00:00pages
4930-4936issue
9eissn
0938-7994issn
1432-1084pii
10.1007/s00330-019-06041-xjournal_volume
29pub_type
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