https://repository.sustech.edu/handle/123456789/23307 Sat, 11 Apr 2026 15:34:14 GMT 2026-04-11T15:34:14Z https://repository.sustech.edu/handle/123456789/23450 التنبؤ بتقدير وتحليل العوامل المعززة في هجرة الأطباء السودانيين للخارج للفترة من (2008 – 2018م) باستخدام منهجية بوكس- جينكنز عبدالله محمد عبدالله, هنادي تناول هذا البحث منهجية بوكس- جينكنز للتنبؤ بأعداد الأطباء السودانيين المهاجرين للخارج، واعتمد على سلسلة بيانات ثلث سنوية للفترة (2008 - 2018م)، ومن خلال الرسم البياني واختبار ديكي- فوللر المطور اتضح أن السلسلة غير ساكنة عند المستوى وأنها ساكنة عند الفرق الأول، وبمقارنة نماذج مختلفة مع النموذج المقترح اتضح أن النموذج المناسب هو ARIMA(3,1,11) من خلال اجتيازه لاختبارات الفحص والتشخيص، وتم تطبيق النموذج في التنبؤ للفترة (2019- 2024م)، وخلص البحث إلى اعتماد نتائج النموذج المقترح للتنبؤ بأعداد الأطباء السودانيين المهاجرين للخارج، واستخدام أساليب تنبؤية أخرى ومقارنة نتائجها بنماذج ARIMA. Sat, 01 Jun 2019 00:00:00 GMT https://repository.sustech.edu/handle/123456789/23450 2019-06-01T00:00:00Z https://repository.sustech.edu/handle/123456789/23392 Enhancement Pattern of liver Lesions:AComputerized Tomography Based Study Musa Eltrifi, Rehab; Elfadil Mohamed Garelnabi, Mohamed; Edward Ayad, Caroline The Objectives of this study wereto evaluate the enhancement pattern of liver lesions in the triphasic spiral computerized tomography (CT), as well as to validate the most suitable protocol for lesion detection correlated with the final CT opinion/diagnosis, in addition to find textural changes of liver and spleen, highlighting the most common associated findingsin those cases.A sample of 100 patients was used, their ages were from (24 – 88) years old, both genders were included. All were diagnosed to have liver lesions. This study was conducted in Radiology Department Wad MedaniHospital and ELsoni Clinic Center- WadMedani-Sudan, during the period from January 2015 up to January 2018.The sample included 26 cases of simple cyst ,2 with both cysts and abcess,19 of heamangioma,27hepatocelluler carcinoma(HCC )and 26 with metastases. Results showed that the most common liver enhancement pattern was heterogeneous in the hepatic arterial phase and in the portal venous phase. This finding was seen in 23% and 19% of lesions including (HCC) and metastases causing the liver texture to be heterogeneous. Other patterns of enhancement were not common sending-off homogeneous pattern in the cases of the cysts 21% and heamangioma 15%.The mean attenuation measurement of the cysts in the hepatic arterial phase was 35HU±69.98, and it increased in the portal venous phase to a mean of 39.92HU±72.40.Cysts and abscess showed HUof -705.00±134.35 in the arterial phase then showed an increasing at the venous phase to be -550.00±70.71 then reduced at the equilibrium phase to be-805.00HU±134.35.Haemangiomas was 44.42HU ±17.38in the arterial phase and increased in the venous phase 48.19HU±25.73 then decreased in the equilibrium phase 47.27HU±22.78.On average, the HCCwas 52.3 HU±25.90 less than the adjacent liver parenchyma in the arterial phase,57.31HU±26.44in the venous phase and 54.15HU±24.06 at the equilibrium phase. Metastases also showed an increasing in the attenuation pattern after contrast enhancement from 73.54HU±63.62in arterial phase to be increased in the venous phase80.94HU±67.50then it decreased to be 75.31 HU±57.30at the equilibrium phase .The study showed that there is a significant difference of the HU between all the detected liver lesions in all scanning phase at p= 0.000.The presence of liver enhancing lesions were in association with liver and spleen texture changes.Ascitis was found in most of the cases constituting 47(47%) of the cases. The study concludedthat triphasic CT Scan is an acknowledged imagingtool in characterizing liver lesions and evaluation of liver and spleen textural changes and detection of the associated findings Sat, 01 Jun 2019 00:00:00 GMT https://repository.sustech.edu/handle/123456789/23392 2019-06-01T00:00:00Z https://repository.sustech.edu/handle/123456789/23388 Concordance of Breast Imaging Reporting and Data System with Routine Interpretation of Digital Mammography A.Wanasi, Mayson; Edward Ayad, Caroline; Abdu Mohamed Abdu, Duha; Gamalalddin Yaqob, Mahasin The American College of Radiology’s (ACR) Breast Imaging Reporting and Data System (BI-RADS) provide a lexicon that give a standard way of reporting mammogram that help ensure better follow up of suspicious findings.The study conduct to assess the concordance of final findings of mammograms reported using BI-RADS lexicons and the final impression of radiologist those using routine interpretation of mammogram. The data descriptively analyzed and Kappa value was determined to measure the concordance. The result appeared as the concordance of the breast composition was (k = 0.5) that point Moderate agreement. According to mass, the presence of the mass was (k = 0.83) that was a Very Good agreement, the shape of the mass was (k = 0.53) that a Moderate agreement, the margin of the mass was (k = 0.475) that point Moderate agreement, the density of the mass was (k = 0.74) that point a good agreement, in addition the associate calcifications was (k = 1) that point a total agreement. According to calcification the Kappa value was for presence (k = 0.87) that point to Very Good agreement, the morphology of the calcifications was (k = 0.85) that point to Very Good agreement and distribution was (k = 1) that point Very Good agreement. In addition, the architectural distortion was (k = 0.85) that point to Very Good agreement, and A symmetry was (k =0.138) it was poor agreement. The intramammary lymph node was (k = 0.65) that point a good agreement and the overall agreement and concordance to the final finding was (k = 0.58) that point to a moderate agreement. As the conclusion the study revealed that there is a wide variation in wording of the mammography report between the radiologists. Therefore, it is very important to follow the BIRAD lexicon in order to avoid any misunderstanding or confusion. Sat, 01 Jun 2019 00:00:00 GMT https://repository.sustech.edu/handle/123456789/23388 2019-06-01T00:00:00Z https://repository.sustech.edu/handle/123456789/23387 IL1β exon5 3954 C/T Polymorphism: A potential Risk Factor for the Susceptibility to Rheumatoid Arthritis in Sudanese Patients A. khalil, Hind; A Fadl, Manal Rheumatoid arthritis (RA) is a chronic inflammatory disease, usually causes progressive destruction of the joints. The genetic information is important for understanding the mechanisms of the disease. Cytokines are considered to play an important role in the pathogenesis of RA, as the imbalance between pro- and anti-inflammatory cytokines was known to promote the induction of autoimmunity, inflammation and joint destruction. This study aimed to demonstrate ―for the first time‖ a possible association of the 3954 C/T polymorphism (rs1143634) in exon 5 of IL-1β and the RA predisposition in Sudanese patients. A cross sectional association study was conducted, involving 84 unrelated RA patients and 93 healthy controls. The IL-1β (rs1143634) polymorphism was detected by PCR followed by RFLP technique using TaqI restriction enzyme. The result showed that 83.3% of the examined RA patients are females with high significant difference between cases and controls and five folds increased risk of female than males (P=0.001, OR=5.33, CI=2.64-10.77). 48.8% of the cases are at age less than 35 years. Family history of RA was reported in 26% of the cases, with no significant difference between cases and controls (p=0.07). None of the participants was smoker, 100% of the cases live sedentary live. The genotype analysis of IL1β exon5 3954 C/T (rs1143634) polymorphism showed a significant association with RA (P=0.001). In addition, the analysis considering the mutant genotypes CT+TT versus the wild genotype CC also suggests a high significant association of IL1β exon5 polymorphism with the risk of RA susceptibility in our patients and it increase peoples’ risk 2.6 folds to RA predisposition (P=0.001, OR=2.64, CI= 1.38-5.03). Carriage of the rare mutant IL-1 β (+3954) allele T was higher in arthritis patients as compared to the controls, however, the difference was insignificant (P=0.75). 68% of the RA patients showed articular manifestation, of which 70.6% have the mutant T allele. The result of this study, for the first time in Sudan, suggest that the 3954 C/T IL1 β (rs1143634) polymorphism is associated with the risk of RA, and the carriage of the mutant allele might be a predictive factor for the onset of clinical manifestation of rheumatoid arthritis in Sudanese patients. Sat, 01 Jun 2019 00:00:00 GMT https://repository.sustech.edu/handle/123456789/23387 2019-06-01T00:00:00Z