Majid Assadi

Publications (104) View all

• Article: A Pooled Analysis of Diagnostic Value of 99mTc-Ubiquicidin (UBI) Scintigraphy in Detection of an Infectious Process.

  Afshin Ostovar, Mahsan Assadi, Katayoun Vahdat, Iraj Nabipour, Hamid Javadi, Mohammad Eftekhari, Majid Assadi
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  ABSTRACT: Although the data are promising from limited studies with technetium-99m ubiquicidin (Tc-UBI) scintigraphy in detection of infection in humans, these studies have had a limited sample size. This study was conducted to provide a systematic review and meta-analysis of the reported diagnostic accuracy of Tc-UBI scintigraphy in detection of an infectious process. The PubMed/MEDLINE, Web of Science, EMBASE, and Google Scholar literature databases were systematically searched to find the relevant human studies on Tc-UBI scintigraphy. For each eligible study, the true-positive, false-positive, true-negative, and false-negative findings at Tc-UBI scintigraphy were recorded, and the overall statistical parameters were acquired. Ten studies carried out from 2004 to 2010 were included in the analysis. The pooled data sensitivity was 94.5 % and with a 95% confidence interval of 91.2%-96.8%. The pooled specificity was still as high as about 92.7%. The range of reported specificity was from 80% to 100%. The overall accuracy was 93.7% (95% CI: 91.2%-95.7%). The study demonstrated that Tc-UBI scintigraphy can be used to identify an infectious process with admirable accuracy in early views; however, further investigations are recommended.
  Clinical nuclear medicine 06/2013; 38(6):413-6. · 3.92 Impact Factor
• Article: Radiolabeled anti-aquaporin-4 protein antibody imaging: a valuable method for determining neuromyelitis optica.

  Reza Nemati, Somayeh Mehdizadeh, Iraj Nabipour, Abdollatif Amini, Majid Assadi
  Nuclear Medicine Communications 05/2013; 34(5):413-416. · 1.40 Impact Factor
• Article: The value of renal scintigraphy in the diagnosis of intrarenal urinoma.

  Hamid Javadi, Majid Assadi
  European Journal of Nuclear Medicine 04/2013; · 4.53 Impact Factor
• Article: AN UPDATE ON MOBILE PHONES INTERFERENCE WITH MEDICAL DEVICES.

  Ali Mahmoud Pashazadeh, Mahdi Aghajani, Iraj Nabipour, Majid Assadi
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  ABSTRACT: Mobile phones' electromagnetic interference with medical devices is an important issue for the medical safety of patients who are using life-supporting medical devices. This review mainly focuses on mobile phones' interference with implanted medical devices and with medical equipment located in critical areas of hospitals. A close look at the findings reveals that mobile phones may adversely affect the functioning of medical devices, and the specific effect and the degree of interference depend on the applied technology and the separation distance. According to the studies' findings and the authors' recommendations, besides mitigating interference, using mobile phones at a reasonable distance from medical devices and developing technology standards can lead to their effective use in hospital communication systems.
  Radiation Protection Dosimetry 04/2013; · 0.82 Impact Factor
• Article: Serum retinol levels are positively correlated with hemoglobin concentrations, independent of iron homeostasis: a population-based study.

  Seyed Mojtaba Jafari, Gholamreza Heidari, Iraj Nabipour, Roya Amirinejad, Majid Assadi, Afshar Bargahi, Samad Akbarzadeh, Rahim Tahmasebi, Zahra Sanjdideh
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  ABSTRACT: Micronutrient interactions give rise to complex issues that have an impact on preventive strategies when multiple micronutrient deficiencies coexist. The aim of this population-based study was to determine the prevalence of vitamins A and E and iron deficiencies among women 15 to 49 years of age in the northern Persian Gulf region. We hypothesized that serum retinol levels may show correlations with hemoglobin (Hb) concentrations, independent of iron status. A total of 1242 nonpregnant women of reproductive age were selected via a multistage stratified random cluster sampling technique. Serum ferritin and soluble transferrin receptor levels were measured using enzyme immunoassay techniques. Serum retinol (vitamin A) and α-tocopherol (vitamin E) were determined for 727 women by high-performance liquid chromatography. The prevalence of anemia (Hb <12 g/dL), iron deficiency (serum ferritin <15 μg/L), and iron deficiency anemia was 8.7%, 25.4%, and 4.6%, respectively. Vitamin A (<0.7 μmol/L) and vitamin E (<11.6 μmol/L) deficiencies were found in 1.2% and 5.9% of the studied population, respectively. Multiple regression analysis revealed that serum retinol levels exhibit a significant association with Hb concentrations after controlling for serum ferritin levels, anemia associated with chronic disease, and risk factors for anemia. Therefore, most nonpregnant women of reproductive age in the northern Persian Gulf were found to have adequate serum vitamin A and E levels. However, the status of anemia and iron deficiency anemia could be considered a mild public health problem in this region. On the basis of multivariate analyses, we conclude that low serum retinol levels may contribute to anemia, independent of iron homeostasis.
  Nutrition research (New York, N.Y.) 04/2013; 33(4):279-85. · 1.20 Impact Factor