Asst. Prof. Tolga Cukur, a faculty member of UMRAM, Department of Electrical and Electronics Engineering and Neuroscience Program at Bilkent University, has been recently awarded the EMBO (European Molecular Biology Organization) Installation Grant. He is among 8 scientists this year who have been selected for this grant. The objective of the Installation Grant is to support young scientists in life sciences to establish their own research groups in member states. See more information here.

A recent study by Dr. Tolga Cukur of UMRAM has been published in IEEE Transactions on Medical Imaging. The study describes a novel image acquisition/reconstruction strategy that mitigates signal loss in rapid steady-state free precession (SSFP) imaging. Although SSFP imaging offers very high SNR efficiency, it suffers from signal loss in regions of large magnetic field inhomogeneities. The developed strategy combines tailored data acquisition patterns with compressed sensing reconstructions to minimize signal loss without increasing scan time. Click here for the full article.

A new study by Dr. Tolga Cukur of UMRAM has been published in Magnetic Resonance in Medicine. The study develops a new technique that enables reliable fat/water separation for ultra-fast MRI acquisitions. The proposed technique is a significant advancement over state-of-the-art methods, and it enables a significantly more favorable trade-off between background suppression and broadband excitation during rapid imaging. In vivo experiments conducted during the study show robust performance in the presence of field inhomogeneities, promising great clinical utility. Click here for the full article.

The study which Professor Kader Karli Oguz, UMRAM researcher Arzu Ceylan Has and a group of scientists from Neurology Department of Hacettepe Hospital carried out on patients of ischemic stroke have been published in the January 2015 issue of Stroke. Editorial of the same issue is also on this article. In this study a consecutive series of patients with ischemic stroke, retrospectively determined clinical and imaging features associated with nonsustained AF (n=126), defined as <30-second-lasting supraventricular tachyarrhythmias with irregular RR interval on 24-hour Holter monitoring, and compared  to the patients with persistent/paroxysmal AF (n=239) and no AF (n=246).  Leison probability distribution map of each patient group has been created by working on DWI signs and leison volumes were  calculated.  For full article see PMID: 25634003 .

A new study by Hüseyin Boyacı has been published in Journal of Vision. In early retinotopic areas of the human visual system,information from the left and right visual hemifields 2 (VHFs) is processed contralaterally in two hemispheres. Despite this segregation, we have the perceptual experience of a unified, coherent, and uninterrupted single visual field. How exactly the visual system integrates information from the two VHFs and achieves this perceptual experience still remains largely unknown. In this study using fMRI,  candidate areas that are involved in interhemispheric integration and the perceptual experience of a unified, global motion across VHFs has been explored. The full article can be found here:

Ilhan Atagun of Ataturk hospital working with a group of investigators including Oktay Algin of UMRAM investigated certain regions of the brain using magnetic resonance spectroscopy in patients with psychological disorders.  In the study on 30 patients they found abnormalities in chemistry of their brain. The title of the associated manuscript is "Investigation of Heschl's gyrus and planum temporale in patients with schizophrenia and bipolar disorder: A proton magnetic resonance spectroscopy study". Authors are M.İ. Atagün, E.M. Şıkoğlu, S.S. Cana, G. Karakaş-Uğurlu, S. Ulusoy-Kaymak, A. Çayköylü, O. Algın, M.L. Phillips, C.M.Moore, D. Öngür. The article was published in  Schizophr. Res. in 2014.

A new artice by Huseyin Boyaci has been published in Journal of Vision. In this study the effects of contiguity and figure-ground organization on the area rule of lightness is investigated.In a simple two-dimensional (2D) display composed of two uniform surfaces with different luminances, the lightness of the darker surface varies as a function of its relative area while its luminance is held constant (Gilchrist & Radonjić, 2009; Li & Gilchrist, 1999). This phenomenon is known as the area rule of lightness, and although it is extensively studied in the literature, the underlying principles are still largely unknown. The article can be found in the link: