Murat Dağli

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Signal detection in the analysis of blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) may be greatly hindered by cardiac pulsatility artifacts. Vessel pulsation, cerebrospinal fluid movement, and tissue deformation are all associated with the cardiac cycle and all can produce fMRI signal variance. Most cognitive fMRI studies(More)
PURPOSE We examined age-related changes in baseline regional cerebral blood volume (rCBV) and response to acetazolamide stimulation by using dynamic contrast-enhanced MR imaging. METHODS Thirty healthy volunteers ranging widely in age (23 to 82 years) were examined before and after intravenous injection of acetazolamide with dynamic susceptibility(More)
OBJECTIVE The mean platelet volume (MPV) can be used as an indicator of platelet activation. However, it has been shown that the platelet/lymphocyte ratio (PLR) can provide useful predictive information about inflammation and aggregation pathways. The neutrophil/lymphocyte ratio (NLR) may also be helpful as a marker of systemic or local inflammation. The(More)
UNLABELLED We have developed an image-based compartmental analysis for estimating effective renal plasma flow (ERPF in units of milliliters per minute) from the full time-activity curves of regions of interest (ROI) placed over the heart, kidneys and bladder. METHODS Kidney or time-activity curves are corrected for physical attenuation using estimates of(More)
PURPOSE To determine whether whole-brain acetazolamide-induced changes in regional cerebral blood volume (rCBV) can be assessed on a conventional gradient 1.5-T MR system using 3-D dynamic susceptibility contrast-enhanced MR imaging. METHODS A 3-D frequency-shifted (FS) burst technique was used to assess the intravascular first pass of contrast agent.(More)
We present a case of posttraumatic infarction in the territory supplied by the lateral lenticulostriate artery after a minor head injury in a child. A 2.5-year-old child was admited to our emergency room after a head-on fall from a height of 50cm. He developed a right hemiparesis and he could not speak properly for about half an hour. An initial(More)
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