CT Perfusion
Functional Imaging of Malignant Gliomas with CT Perfusion
... of CT perfusion images of malignant rat gliomas that have an even lower CNR than previously reported ...of CT perfusion images were improved after ...brain CT perfusion images ...
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Masked smoothing using separable kernels for CT perfusion images
... Background: CT perfusion images have a high contrast ratio between voxels representing different anatomy, such as tissue or vessels, which makes image segmentation of tissue and vascular regions relatively ...
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Usefulness of an Anisotropic Diffusion Method in Cerebral CT Perfusion Study Using Multi Detector Row CT
... cerebral CT perfusion studies using MDCT for improving the accuracy of perfusion parameters and to investigate its usefulness and feasibility in reducing radiation ...
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Posterior reversible encephalopathy syndrome (PRES) and CT perfusion changes
... Posterior reversible encephalopathy syndrome (PRES) can present with focal neurologic deficits, mimicking a stroke and can often represent a diagnostic challenge when presenting atypically. A high degree of suspicion is ...
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CT Perfusion Quantification of Small Vessel Ischemic Severity
... based techniques. CT perfusion (CTP) is cheaper, faster, and more widely available than MR imaging, SPECT, or Xe-CT techniques. CTP is widely used in the evaluation of patients with stroke, but no ...
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Which CT Perfusion Parameter Best Reflects Cerebrovascular Reserve?: Correlation of Acetazolamide Challenged CT Perfusion with Single Photon Emission CT in Moyamoya Patients
... Fig 2. Clustered box-and-whisker graphs show the differences in the mean values of baseline and drug-challenged CT perfusion parameters between the normal and impaired cerebrovascular reserve groups in each ...
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Role of CT perfusion in acute ischemic infarct
... row CT Scanner. The CT images were acquired by using a 120-kV and 450-mAs ...unenhanced CT of the whole brain, four adjacent 5-mm-thick sections were selected starting at the level of the basal ...
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Diagnostic Accuracy of CT Angiography and CT Perfusion for Cerebral Vasospasm: A Meta Analysis
... ⫽ CT angiography; CTP ⫽ CT perfusion; DCI ⫽ delayed cerebral ischemia; DOR ⫽ diagnostic OR; DSA ⫽ digital subtraction angiography; ICA ⫽ internal carotid artery; LR ⫽ likelihood ratio; LR ⫺ ⫽ ...
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Perfusion Deficits and Mismatch in Patients with Acute Lacunar Infarcts Studied with Whole Brain CT Perfusion
... dual-source CT system (Siemens, Erlan- gen, Germany) with a 98-mm z-cover- age and 26 time points acquired at each ...injector. CT perfusion imaging parame- ters were 80 kV(peak), 250 mAs, ...syngo ...
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Dynamic CT Perfusion Imaging of Acute Stroke
... dynamic CT perfusion imaging could help to determine whether IV fibrinolysis, angiog- raphy and intraarterial recanalization, hepariniza- tion, neuroprotective medication, hypothermia, or early ...
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Alberta Stroke Program Early CT Scoring of CT Perfusion in Early Stroke Visualization and Assessment
... The CT stroke protocol using a 4-section CT scanner (LightSpeed; GE Healthcare, Milwaukee, Wis) comprised pre- and postcontrast head scans from the skull base to the ...respectively. CT ...
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CT Perfusion Parameter Values in Regions of Diffusion Abnormalities
... Control CT Perfusion Values We measured control reference values to compare with the values in regions of diffusion ...measured perfusion parameter values, pixels with CBF values greater than 2 SDs ...
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The role of CT perfusion in the characterisation of solitary renal lesions an added value to multiphasic CT
... This is to certify that this dissertation work titled “THE ROLE OF CT PERFUSION IN THE CHARACTERISATION OF SOLITARY RENAL LESIONS - AN ADDED VALUE TO MULTIPHASIC CT” of the candidate ...
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Assessment of the Reproducibility of Postprocessing Dynamic CT Perfusion Data
... There are several significant limitations of the cur- rent study. First, all data analysis was performed by using a single commercially available software pro- gram (CT Perfusion, GE Medical Systems) that ...
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Quantitative analysis of CT-perfusion parameters in the evaluation of brain gliomas and metastases
... All elaborated data, corresponding to the mean values with their standard deviations inside the outlined ROIs, the contralateral ROIs and their ratios were recorded in an output text file. These data were initially used ...
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Evaluation of CT Perfusion in the Setting of Cerebral Ischemia: Patterns and Pitfalls
... ischemic perfusion patterns followed by an illustrative series of technical/diagnostic challenges of CTP interpre- tation in the setting of acute stroke ...
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Effect of Training and Experience on Qualitative and Quantitative CT Perfusion Data
... C T perfusion (CTP) imaging has been gaining recognition in the clinical setting for evaluation of patients with cere- brovascular diseases. However, the role of CTP in patients with acute stroke has not yet been ...
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CT Perfusion Spot Sign Improves Sensitivity for Prediction of Outcome Compared with CTA and Postcontrast CT
... RESULTS: Primary outcome criteria were met in 18 patients (61%). CTP spot sign presence was an independent predictor of hematoma expansion or poor outcome (P ⫽ .040) and demonstrated greater sensitivity (78%) than spots ...
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C Arm Conebeam CT Perfusion Imaging in the Angiographic Suite: A Comparison with Multidetector CT Perfusion Imaging
... is small, and the results only demonstrate the feasibility of the technique. Second, these data acquisitions were performed at a single institution (Department of Neuroradiology, University Er- langen-Nuremberg, Germany) ...
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Dynamic CT Perfusion Imaging in Subarachnoid Hemorrhage–Related Vasospasm
... There are some practical limitations to the techniques used in this study. First, although most of the blood pooled around the basilar artery in the posterior fossa, as seen on unenhanced CT immediately following ...
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