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Development of image quality related reference doses called acceptable quality doses (AQD) in paediatric CT exams in Qatar
Published 2022“…The median CTDIvol values for the above weight groups were 16, 20, 22, 22, 27 and 27 mGy and the median DLP values for these weight groups were 271, 377, 463, 486, 568 and 570 mGy cm, respectively, for head CT. …”
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The impact of automatic tube current modulation related settings of a modern GE CT scanner on image quality and patient dose; details do matter
Published 2024“…<h3>Purpose</h3><p dir="ltr">To investigate the operation principles of the automatic tube current modulation (ATCM) of a modern GE healthcare CT scanner, and the impact of related settings on image quality and patient dose.…”
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Diagnosing type 2 diabetes using Hemoglobin A1c: a systematic review and meta-analysis of the diagnostic cutpoint based on microvascular complications
Published 2020“…</p><h3>Conclusions</h3><p dir="ltr">The prevalence of nephropathy and moderate retinopathy was increased in subjects with HbA1c values ≥ 6.5% confirming the high specificity of this value for diagnosing T2DM; however, at HbA1c < 6.5% retinopathy increased at age > 55 years and, most strikingly, in African-Americans, suggesting there may be excess microvascular complication prevalence (particularly nephropathy) in individuals below the diabetes diagnostic threshold.…”
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The balancer model in international relations. (c2009)
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Implementation of trust region methods in optimization. (c1998)
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Regulation of cAMP homeostasis by the efflux protein MRP4 in cardiac myocytes
Published 2011“…MRP4-deficient mice displayed enhanced cardiac myocyte cAMP formation, contractility, and cardiac hypertrophy at 9 mo of age, an effect that was compensated transiently by increased phosphodiesterase expression at young age. …”
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Multisystem inflammatory syndrome in children (MIS-C) secondary to COVID-19 mRNA vaccination – A case report from Qatar
Published 2022“…After he received appropriate immunomodulatory treatment (IVIG and methylprednisolone) as per the guideline, he showed marked clinical improvement. Our case report highlights the need to consider MIS-C as a potential differential in young patients who present with unexplained multisystem illness with increased inflammatory markers and negative microbiologic work-up. …”
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Selective changes in cytosolic β-adrenergic cAMP signals and L-type Calcium Channel regulation by Phosphodiesterases during cardiac hypertrophy
Published 2020“…In SHAM and CH LVMs, a short isoprenaline stimulation (Iso, 100 nM, 15 s) elicited a similar transient increase in cAMP with a half decay time (t1/2off) of ~50 s. …”
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Tuning dual-Fe sites in Fe–N–C dual-atom catalysts by sulfur doping for enhanced CO₂ electroreduction: Insights from the first-principles computations
Published 2025“…<p dir="ltr">This study explores the impact of sulfur doping on the surface and electronic structure of Fe–N–C dual-atom catalysts for electrochemical CO<sub>2</sub> reduction, using first-principles density functional theory (DFT) computations. …”
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Effectiveness of Positron Emission Tomography for Predicting Chemotherapy Response in Colorectal Cancer Liver Metastases
Published 2010“…For example, a few years ago an extrahepatic metastasis effectively eliminated surgical resection, but a combination of chemotherapeutic options and surgical techniques has expanded the indications for resection and increased the population of patients who may benefit.1,2 Neoadjuvant chemotherapy has increased the resectability rate by 11% to 37%.1 Unfortunately, greater than 80% of patients undergoing hepatic resection will have recurrences, mostly within the first 2 years.2 Nonetheless, the only hope for cure is resection, and prior surgical dogma based on the number of lesions, size of the tumor-free resection margin, and presence of resectable extrahepatic disease must be questioned.3- 5 The current standard approach to surgical planning is contrast-enhanced computed tomography (CT) or magnetic resonance imaging (MRI) for specific tumor characteristics or contraindications to CT.6 Several series showed that focal extrahepatic disease, an isolated pulmonary lesion, can be safely resected, with 5-year survival rates of 29% to 58%.7,8 In 1 series,7 17 of 30 patients required 3 or more resections. …”
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Characterization of brain lesions using MRI/spectroscopy versus FDG PET fused with MRI
Published 2008“…Objectives: To retrospectively compare the diagnostic value of MRI with integrative spectroscopy (MRI/spec), to anatomically fused FDG PET/MRI (PET/MRI) in brain lesions. …”
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Reduced HDL-cholesterol in long COVID-19: A key metabolic risk factor tied to disease severity
Published 2024“…Findings indicated significant metabolic shifts in severe Long-COVID-19 cases, mainly a marked drop in HDL-C levels and a doubled increase in ferritin levels and insulin resistance compared to the mild cases and controls. …”
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Land surface temperature responses to land use dynamics in urban areas of Doha, Qatar
Published 2024“…Specifically, the mean summer LST increases by 7.64 °C (0.34 °C annually), and the mean winter LST decreases by 4.87 °C (0.22 °C annually). …”
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