Journal of

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Background: The aim of this study is to explore the safety and diagnostic performance of dual-source CT scan in comparison with single source CT scan and conventional angiography in patients with coronary heart diseases.
Materials and methods: A systematic review was performed using CRD standard methods. The Cochrane Library, MEDLINE, EMBASE، Google Scholar and TRIP were searched up to April 2009. The references of the marked studies and gray literature were also searched.

Results: 17 articles were included. 9 articles reported the safety and 12 articles reported the diagnostic performance of DSCT.  Generally DSCT was a non-invasive and safe procedure.  Using DSCT the exposure of patient to X-ray was less than 64-slice single source CT (SSCT) and more than conventional angiography. For the DSCT the mean sensitivity was 90.4%, mean specificity was 82%, mean PPV was 83% and mean NPV was 96%. For the SSCT the mean sensitivity was 90.4%, mean specificity was 82%, mean PPV was 83% and mean NPV was 96%. The mean sensitivity, specificity, PPV and NPV of DSCT were slightly higher than SSCT.

Conclusion: DSCT is a noninvasive and relatively safe technology. The diagnostic performance of DSCT is higher than SSCT, but its performance is not so much high to be able to substitute the conventional invasive angiography which is still the gold standard test.

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Background and Aim: The aim of this study was to investigate the income changes resulting from the implementation of this book in the hospitals of the University of Medical Sciences.
Materials & Methods: This cross-sectional study was conducted based on retrospective information related to the first half of 1398 of Shahid Beheshti University of Medical Sciences. Data related to this study were collected from patients' records using hospital information system and hospital intelligent management system of Shahid Beheshti University of Medical Sciences. In order to analyze the data, the average of Rials per service was used for each hospital and type of admission.
Results: The results showed that with the implementation of the book of relative value 2018, the total income of the studied hospitals will increase by 10.67%. In total, the share of total book codes included in the study is 41% of the total, of which 20% is the professional component, 19% is the technical component and 2.4% is anesthesia. After book codes, hoteling with 26% and consumer goods with 14% and medicine with 11% make up the rest.
Conclusion: The approach of the 2018 book is more towards temporary inpatient services and encourages providers not to admit patients to receive services. Also in this book, the proper growth of the technical component of services will occur, which in other words indicates the approach and encouragement of investment in the hospital sector.