perfusion images
Rigid Registration of Renal Perfusion Images Using a Neurobiology-Based Visual Saliency Model
... renal perfusion data exhibiting rapid intensity change and ...for perfusion images and the Itti-Koch model is a better indicator of visual saliency than scale-space ...
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Masked smoothing using separable kernels for CT perfusion images
... 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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Confounding Effect of Large Vessels on MR Perfusion Images Analyzed with Independent Component Analysis
... from perfusion images include thresholding, which results in signal voids, or using spin-echo acquisitions that are insen- sitive to the signal changes in large ...
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Contrast Limited Adaptive Histogram Equalization for Qualitative Enhancement of Myocardial Perfusion Images
... This work presents the effect of contrast limited adap- tive histogram equalization techniques on myocardial perfusion images in color space. The paper is organized as follows. The basic histogram ...
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Cerebral Hemodynamics on MR Perfusion Images before and after Bypass Surgery in Patients with Giant Intracranial Aneurysms
... The perfusion MR studies were performed on 12 axial sec- tions, which were selected to include most of the MCA terri- ...tory. Perfusion MR imaging was performed on 7-mm sections (gap, 0) using a multishot ...
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Comparison of heterogeneity quantification algorithms for brain SPECT perfusion images
... Normal phantom The modified Zubal head phantom [45] was used to simulate normal HMPAO brain perfu- sion SPECT images. First, the 63 anatomical regions of the magnetic resonance imaging (MRI)-Zubal head phantom ...
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Real time cine and myocardial perfusion with treadmill exercise stress cardiovascular magnetic resonance in patients referred for stress SPECT
... The results of each study, exercise stress SPECT and exer- cise stress CMR, were interpreted by separate investiga- tors blinded to the results of the other modality's interpretation. The nuclear interpreter had access ...
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Cardiac CT and MRI guide surgery in impending left ventricular rupture after acute myocardial infarction
... pass perfusion images ...pass perfusion defect persisted on the delayed enhancement MR images taken 55 minutes after the gadolinium injection ...
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Two Dimensional Laser Scanner for Blood Perfusion Imaging Through Curved Sections of Human Forearm
... tissue perfusion in the form of blood flow through that ...of perfusion at a specified area the LDF probe is moved manually and each time the reading has to be noted ...the perfusion images of ...
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Cardiovascular magnetic resonance at 3 0T: Current state of the art
... for perfusion ima- ging when moving from ...first-pass perfusion imaging when moving from ...in perfusion images acquired at ...stress perfusion ima- ging for detecting hemodynamically ...
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Microbubble enhanced ultrasound for the antivascular treatment and monitoring of hepatocellular carcinoma
... and perfusion, further studies of the bioeffects over time will inform whether the therapy contributes to a response and regression of ...which perfusion effects transition from an increase to disruption ...
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Cerebral Perfusion Long Term after Therapeutic Occlusion of the Internal Carotid Artery in Patients Who Tolerated Angiographic Balloon Test Occlusion
... The 2 patients who were claustrophobic and were even- tually excluded from participation did not have any neuro- logic symptoms after carotid balloon occlusion. Of the 6 patients who did not want to participate, 4 ...
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Combined Low Dose Contrast Enhanced MR Angiography and Perfusion for Acute Ischemic Stroke at 3T: A More Efficient Stroke Protocol
... One of the other potential disadvantages of the reduced con- trast dose is increase in the noise level, which can certainly lead to inaccuracies in AIF and subsequently affects the deconvoluted perfusion ...
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Adipose derived mesenchymal stem cells transplantation via portal vein improves microcirculation and ameliorates liver fibrosis induced by CCl4 in rats
... There are still controversies about the most appropriate route of MSC transplantation. In our study, the effective- ness of different transplantation routes was compared. Kim SJ and co-workers have reported that tail ...
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Relationship between grades of macular perfusion and foveal thickness in branch retinal vein occlusion
... Because central foveal thickness in the current study was evaluated at least 6 months after the onset of BRVO and the average period from the first visit to examination was 9 months, the effect of the various time points ...
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Cardiovascular magnetic resonance artefacts
... Another form of preparation pulse used in CMR is the tagging pulse. This pulse introduces spatial tags, i.e. spatially periodic signal intensity modulation in the image and is commonly used to evaluate tissue deform- ...
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Quantitative three dimensional myocardial perfusion cardiovascular magnetic resonance with accurate two dimensional arterial input function assessment
... Ten healthy volunteers (5 male) with an average age (± standard deviation) of 25.7 ± 5.1 years underwent first- pass rest perfusion CMR examinations. All volunteers were scanned upon written informed consent ...
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Combining MRI with NIHSS Thresholds to Predict Outcome in Acute Ischemic Stroke: Value for Patient Selection
... Briefly, we could not obtain data such as reperfusion status, final infarct volumes, and clinical status at day 30 for most patients. There were variable treatments and variable times from stroke onset to imaging and ...
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Perfusion vector—a new method to quantify myocardial perfusion scintigraphy images: a simulation study with validation in patients
... One thousand two hundred eighty-three patients re- ferred for MPS in Malmö, Sweden, in 2007 were consid- ered for inclusion. One of the investigators (ET) categorized all patients into the following groups: nor- mal ...
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ACCURACY OF CT ANGIOGRAPHY IN EVALUATING THE ACUTE STROKE (ISCHEMIC AND HEMORRHAGIC)
... CT images are obtained in the arterial ...CT images to be reformatted in any plane enabling a more complete evaluation of ...clear images of cerebral blood ...
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