Mohsen Hajizadeh-Safar
Department of Medical physics, Mashad university of medical sciences, Mashad, IRAN
[ 1 ] - Introduction of a New Standard Student-to-academic-staff Index and Its Evaluation in Mashad University of Medical Scinces
Background: in order to evaluate educational courses, usually different criteria of student and academic staff are being used. These criteria for students include their number, fields, the ratio of post-garaduate students to all students, and for staff, they are composed of their number, their rank in the academic pyramid, as well as the ratio of students to academic staff classified based on t...
[ 2 ] - New approach for attenuation correction in SPECT images, using linear optimization
Background: Photon attenuation as an inevitable physical phenomenon influences on the diagnostic information of SPECT images and results to errors in accuracy of quantitative measurements. This can be corrected via different physical or mathematical approaches. As the correction equation in mathematical approaches is nonlinear, in this study a new method of linearization called ‘Piece ...
[ 3 ] - A survey of annual effective and genetically significant dose from conventional X-ray examinations in 10 counties in Khorasan province-Iran
Background: A study has been conducted to assess two useful radiation protection indices, the annual per-capita effective dose equivalent (AED) and the genetically significant dose (GSD), from conventional diagnostic radiography in 10 counties with more than 1,886,000 inhabitants in Khorasan province in Iran. Materials and Methods: The health centre authorities of Khorasan province were asked t...
[ 4 ] - Introducing "Student Staff Utilized Index" as a quantification index of education
Abstract Background: In this article "Student to Staff Index" was improved by implying student grades and staff academic ranks in every institute as a new "Standard S. to S. Index". Also "Utilized S. from S. Index" was introduced for controlling and ranking the private universities. Methods: This index uses the numbers of classes a...
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