Search for: prospective-study
Article Journal of Personalized Medicine ; Volume 11, Issue 12 , 2021 ; 20754426 (ISSN) ; Najafi, M ; Cheungpasitporn, W ; Thongprayoon, C ; Fathi, M ; Sharif University of Technology
In United States (U.S.), government-funded organizations, such as NLDAC, reimburse travel and subsistence expenses incurred during living-organ donation process. However, in Iran, there is a non-governmental organization called Iranian Kidney Foundation (IKF) that funds the direct and indirect costs of donors through charitable donations and contributions from participants in the exchange program. In this article, for countries outside the U.S. that currently use an equality approach, we propose a potential new compensation-apportionment approach (equitable approach) for kidney-exchange chains and compare it with the currently available system (equality approach) in terms of the...
Article Gastroenterology and Hepatology from Bed to Bench ; Volume 6, Issue 2 , 2013 , Pages 92-95 ; 20082258 (ISSN) ; Ektefa, F ; Tafazzoli, M ; Rostami, K ; Nejad, M. R ; Fathi, M ; Rezaye Tavirani, M ; Oskouie, A. A ; Zali, M. R ; Sharif University of Technology
Aim: This study evaluated serum levels of zinc in patient with CD compare to healthy subjects. Background: Celiac disease (CD) is characterized by small intestinal malabsorption of nutrients as a consequence of ingestion of wheat gluten. Zinc is an essential trace element that it has vital biological functions. Patients and methods: Sera of 30 celiac cases and 30 healthy normal cohorts as control group were obtained. Atomic absorption spectrophotometer was employed for estimating serum zinc level. Results: Zinc concentrations in patients diagnosed with CD were significantly lower than healthy subjects (75.97±12 compared with 92.83±18, P-value < 0.0001). Conclusion: The result of this study...
Kinematic analysis of dynamic lumbar motion in patients with lumbar segmental instability using digital videofluoroscopy, Article European Spine Journal ; Volume 18, Issue 11 , 2009 , Pages 1677-1685 ; 09406719 (ISSN) ; Maroufi, N ; Behtash, H ; Zekavat, H ; Parnianpour, M ; Sharif University of Technology
The study design is a prospective, case-control. The aim of this study was to develop a reliable measurement technique for the assessment of lumbar spine kinematics using digital video fluoroscopy in a group of patients with low back pain (LBP) and a control group. Lumbar segmental instability (LSI) is one subgroup of nonspecific LBP the diagnosis of which has not been clarified. The diagnosis of LSI has traditionally relied on the use of lateral functional (flexion-extension) radiographs but use of this method has proven unsatisfactory. Fifteen patients with chronic low back pain suspected to have LSI and 15 matched healthy subjects were recruited. Pulsed digital videofluoroscopy was used...
Artificial neural network for predicting the safe temporary artery occlusion time in intracranial aneurysmal surgery, Article Journal of Clinical Medicine ; Volume 10, Issue 7 , 2021 ; 20770383 (ISSN) ; Ghodsi, S. M ; Zangeneh Soroush, M ; Ansari, S ; Kamali Ardakani, S ; Sharif University of Technology
Background. Temporary artery clipping facilitates safe cerebral aneurysm management, besides a risk for cerebral ischemia. We developed an artificial neural network (ANN) to predict the safe clipping time of temporary artery occlusion (TAO) during intracranial aneurysm surgery. Method. We devised a three-layer model to predict the safe clipping time for TAO. We considered age, the diameter of the right and left middle cerebral arteries (MCAs), the diameter of the right and left A1 segment of anterior cerebral arteries (ACAs), the diameter of the anterior communicating artery, mean velocity of flow at the right and left MCAs, and the mean velocity of flow at the right and left ACAs, as well...