Quantification of Perfusion Using Bolus Tracking Magnetic Resonance Imaging in Stroke
نویسندگان
چکیده
منابع مشابه
Quantification of perfusion using bolus tracking magnetic resonance imaging in stroke: assumptions, limitations, and potential implications for clinical use.
BACKGROUND MR techniques have been very powerful in providing indicators of tissue perfusion, particularly in studies of cerebral ischemia. There is considerable interest in performing absolute perfusion measurements, with the aim of improving the characterization of tissue "at risk" of stroke. However, some important caveats relating to absolute measurements need to be taken into account. The ...
متن کاملQuantification Issues in Bolus-Tracking Perfusion MRI
Bolus-tracking perfusion MRI is based on the monitoring of the first passage of a bolus of contrast agent through the brain tissue and a brain-feeding artery. The contrast agent is injected rapidly in the antecubital vein in the patients arm by means of an MR-compatible power injector. This bolus of contrast agent is pushed in the direction of the heart by means of a saline flush. Continuous dy...
متن کاملCardiac magnetic resonance dual bolus myocardial perfusion quantification superior to the single bolus analysis method
Methods In this substudy of the NOMI-trial (ClinicalTrials.gov identifier: NCT01398384), CMR rest and adenosine stress perfusion were analyzed in 119 patients at 4 months after acute myocardial infarction with TIMI 2-3 flow after primary PCI. A balanced turbo gradient echo sequence with non-shared prepulse was used in 1.5 tesla MR scanner (Achieva, Philips Medical Systems). MBF was quantified u...
متن کاملCerebral perfusion imaging by bolus tracking.
Cerebral perfusion may be visualized by the dynamic imaging of an intravenously injected bolus (a few milliliters) of clinically approved gadolinium-containing contrast media. During its passage through the vasculature of the brain, the contrast agent induces magnetic field disturbances, which can be seen as signal loss on appropriately weighted dynamic MRI. This article deals with the quantita...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Stroke
سال: 2002
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.0000014208.05597.33