Carotid Doppler Ultrasonography in Preoperative Assessment of Coronary Artery Bypass Graft Surgery in an Iranian Population: Association Between Atherosclerosis Risk Factors and Carotid Stenosis
Among all cardiovascular risk factors, it seems that serum HDL, smoking, left main coronary stenosis and hypertension could be associated with significant carotid artery stenosis in CABG candidates
The Effect of Aging on Resting-State Brain Function: An fMRI Study
multi-method analysis of functional connectivity data may be critical to capture the full effect of aging on the health of brain networks
Evaluation of hydrogen peroxide- enhanced endoanal ultrasound in detecting the internal orifice and type of fistula-in-ano
Hydrogen peroxide-enhanced EUS is a suitable method for detecting the internal orifice of anal fistulas. It can be used for detecting trans-sphincteric fistulas, which are the most common type
Correlation of Lund-Mackay and SNOT-20 Before and After Functional Endoscopic Sinus Surgery (FESS): Does the Baseline Data Predict the Response Rate?
The outcome of FESS in patients with CRS is moderately related to primary symptoms according to SNOT-20 as well as the Lund-Mackay radiologic score
Reliability of determination of bony landmarks of the distal femur on mr images and mri-based 3d models
Background/Objective: Consistent determination of the anatomical landmarks on image or image-based three dimensional (3D) models is a basic requirement for reliable analysis of the human joint kinematics using imaging techniques. We examined the intra- and inter-observer reliability of determination of the medial and lateral epicondyle landmarks on 2D MR images and 3D MRI-based models of the knee. Materials and Methods: Sixteen coronal plane MRI recordings were taken from 18 healthy knees using a knee coil with T2-weighted fast spin-echo sequence and 512×512 pixel size. They were then processed by the Mimics software to provide the coronal and axial plane views and to create a 3D image-based model of the femur. Each image was reviewed twice, at least one-day apart. The interclass correlation coefficient, standard error of measurement, and coefficient of variation were calculated to assess the intra- and inter-observer reliability of the landmark determination by six experienced radiologists. A mixed model ana
Uncommon Patterns of Intracranial Aneurysms: A Pictorial Essay
Intracranial aneurysms are relatively common, with a prevalence of approximately 4%. Unruptured aneurysms may cause symptoms mainly due to a mass effect, but the real danger is when an aneurysm ruptures, leading to a subarachnoid hemorrhage
Improvement of White Matter Fiber Tracking Based on Diffusion-Tensor MR Imaging Data Using Modified Speed Functions
White matter tractography is a non-invasive method, which reconstructs three-dimensional trajectories of the brain tracts using diffusion-tensor imaging (DTI) data. Due to the partial volume effect of DTI data, some of tractography algorithms are unable to follow the correct pathways after the crossing and branching regions. The main challenge for tractography methods has been the ability to detect these regions. Fast marching techniques are capable of tracking the fibers with wide spreading