التفاصيل البيبلوغرافية
| العنوان: |
Toward objective quantification of perfusion-weighted computed tomography in subarachnoid hemorrhage: quantification of symmetry and automated delineation of vascular territories. |
| المؤلفون: |
Imielinska, Celina, Liu, Xin, Rosiene, Joel, Sughrue, Michael E., Komotar, Ricardo J., Mocco, J., Ransom, Evan R., Lignelli, Angela, Zacharia, Brad E., Connolly, E. Sander, D’Ambrosio, Anthony L., Connolly, E Sander Jr, D'Ambrosio, Anthony L |
| المصدر: |
Academic Radiology; Jul2005, Vol. 12 Issue 7, p874-887, 14p |
| مصطلحات موضوعية: |
INTRACRANIAL aneurysm ruptures, TOMOGRAPHY, BLOOD circulation, ISCHEMIA |
| مستخلص: |
Rationale and Objectives: Perfusion-weighted computed tomography (CTP) is a relatively recent innovation that estimates a value for cerebral blood flow (CBF) using a series of axial head CT images tracking the time course of a signal from an intravenous contrast bolus. Materials and Methods: CTP images were obtained using a standard imaging protocol and were analyzed using commercially available software. A novel computer-based method was used for objective quantification of side-to-side asymmetries of CBF values calculated from CTP images. Results: Our method corrects for the inherent variability of the CTP methodology seen in the subarachnoid hemorrhage (SAH) patient population to potentially aid in the diagnosis of cerebral vasospasm (CVS). This method analyzes and quantifies side-to-side asymmetry of CBF and presents relative differences in a construct termed a Relative Difference Map (RDM). To further automate this process, we have developed a unique methodology that enables a computer to delineate vascular territories within a brain image, regardless of the size and shape of the brain. Conclusions: While both the quantification of image symmetry using RDMs and the automated assignment of vascular territories were initially designed for the analysis of CTP images, it is likely that they will be useful in a variety of applications. [ABSTRACT FROM AUTHOR] |
|
Copyright of Academic Radiology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
