PhD theses :Medical Radiologic Sciencehttps://repository.sustech.edu/handle/123456789/13242024-03-29T04:37:47Z2024-03-29T04:37:47ZGrading of mycetoma using Magnetic Resonance ImagingOmer, Mosab Elmahi Abd-ElgaderSupervisor, -Ikhlas Abdulaziz HassanCo-Supervisor, -Afraa Siddig Hassan Omerhttps://repository.sustech.edu/handle/123456789/283692023-04-11T06:05:26Z2023-01-26T00:00:00ZGrading of mycetoma using Magnetic Resonance Imaging
Omer, Mosab Elmahi Abd-Elgader; Supervisor, -Ikhlas Abdulaziz Hassan; Co-Supervisor, -Afraa Siddig Hassan Omer
The aims of the study is to investigate the role of Magnetic Resonance Imaging in classification and grading of mycetoma disease, the study was conducted at the center of Mycetoma Research -Khartoum University during the period 2018-2022.
The study deals with the patients of mycetoma disease transferred to Magnetic Resonance Imaging department in FADIAL hospital, ANTALIA diagnostic center and DAR AL-ELAJ hospital.
The study covered 150 patients including both genders 88.7 % male and 11.3 % female the sample is ranged between 10 years up to 62 years.
The MRI evaluated and the data were collected through a questionnaire contains the manifestation of the disease on Resonance Imaging by radiologists.
The data were analyzed by using SPSS program (Statistical Package for the Social Sciences) version 26 and excel program.
Categorical data were presented as frequencies, percentages and the result were displayed as tables and figures.
The result shows that males are more affected with disease than female with percentage of 88.7% the age is ranged between 21-31 years was more affected with percentage of 42%.
The spots were appeared in all images with prominent appearance 69.7% percentage.
Inlets sinuses appear is shown in 45% from the sample, otherwise bone destruction appearance is highly frequented in the data with percentage 75.7 %.
The ability to grading the disease with MSMB (Mycetoma Skin, Muscle and Bone System) had percentage of 100% that’s mean the new grading system was done with all the samples.
The study conduct that Magnetic Resonance Imaging had great value in grading mycetoma disease but on the other hand it’s not main role in classification between types that causing mycetoma disease.
Thesis
2023-01-26T00:00:00ZStudy of Renal Function in Hypertensive and Diabetic Patients using Renal Scintigraphy and Doppler UltrasonographyAbdalrhman, Nmariq Mohamed MhmoodSupervisor, -Mona Ahmed M.AhmedCo- Supervisor, -Salah Ali Fadlalla Ahmedhttps://repository.sustech.edu/handle/123456789/281522023-02-23T08:46:48Z2022-10-10T00:00:00ZStudy of Renal Function in Hypertensive and Diabetic Patients using Renal Scintigraphy and Doppler Ultrasonography
Abdalrhman, Nmariq Mohamed Mhmood; Supervisor, -Mona Ahmed M.Ahmed; Co- Supervisor, -Salah Ali Fadlalla Ahmed
Diabetes mellitus (DM) and hypertension (HTN) affected the renal function and hence is very important to use the rapid and accurate diagnostic techniques. The objective of the study was to study of renal function in hypertensive and diabetic patients using renal scintigraphy and doppler ultrasonography, this retrospective study was done on 150 patients both gender, their ages ranged between (20 - 85) years with hypertensive and diabetic diseases suffering from renal disorder and referred to nuclear medicine department in radiation and isotopes centre -khartoum (RICK) who underwent renal scintigraphy and doppler Ultrasonography. the renal scintigraphy has been carried out using a dose calibrator to measure the activity of radiopharmaceutical (Tc99m - DTPA as 5mCi) before injection to the patient, as well the data acquired from the region of interest using SPECT gamma camera system model (nucline spirit (DHV) variable angle dual head SPECT and whole body DH -503066-VO) and the Doppler indices (RI and PI) was measured using doppler ultrasound machine Model: medson- sonoac X8, Probe: convex probe (2.5-5 MHz). The results showed that the age and weight affected the result of total GFR in an inverse linear relationship, therefore the GFR decreased linearly when age and weight increases by 0.087 ml/year and 0.06 ml/Kg respectively. while the increase of height directly increases the total GFR values linearly by 0.14 ml/cm. and the BMI showed an inverse linear relationship with total GFR where the total GFR decreases by 0.53 ml/kg/m2, since BMI indicate body mass index, the weight pay an obviously role in the decrease of the total GFR. In doppler ultrasonography the Pulsatility Index (PI) showed inverse linear relationship with GFR where GFR decreases by 58 ml/one unit of PI, similarly the Resistive index (RI) also showed an inverse linear relationship with GFR where it decreased by 141 ml/one unit of RI; but using linear regression relationship only the PI got a significance relation with GFR, therefore the results of total GFR using renal scintigraphy can be predicted using Pulsatility Index (PI) in doppler ultrasonography results objectively by applying the following equation: GFR = 134.31- (57.72×PI), and hence can send the patients to renal scintigraphy if needed based on the doppler results.
Thesis
2022-10-10T00:00:00ZStudy Of Lumbar Vertebrae Morphology Using Multi-Detector Computed TomographyAli, Saeed Taha MohamedSupervisor, -Caroline Edward Ayad Khillahttps://repository.sustech.edu/handle/123456789/278732022-12-05T10:44:13Z2022-09-15T00:00:00ZStudy Of Lumbar Vertebrae Morphology Using Multi-Detector Computed Tomography
Ali, Saeed Taha Mohamed; Supervisor, -Caroline Edward Ayad Khilla
The objectives of this descriptive analytical study are to study the normal morphometric measurements of the lumbar spine, as well as to establish a reference values for adult individuals of both genders relevant to the Jazan population (KSA). However, it includes the pedicle dimensions ,vertebral body , spinal canal, vertebral corpus , chord length as well as pedicle angles from the levels of first lumber vertebra (L1) to fifth lumbar vertebra (L5) using Multi detector Computed Tomography (MDCT).
The study sample included 200 Jazan adult participants (100 were males and 100 were females). The participants’ lumbar vertebrae, pedicles body and canal from (L1 to L5) were evaluated .The selected sample were those who underwent CT lumbar spine and abdominal CT scans done for various reasons, at governmental hospitals Jazan region, pathological cases were excluded. The participants age ranged from 19-75 years old (with the mean of 41.77 years), during the period from March 2016 to July 2020. The two thousand pedicles, one thousand normal lumbar vertebrae (L1 to L5) were analyzed using DICOM viewer for their width, height and length of the pedicles dimensions as well as pedicle axis length. Pedicle angles were also been measured including transverse and sagittal angles. Vertebral body width, depth and height were measured in addition to spinal canal width and spinal canal depth as well as pedicle index, pedicle ratio (CT ratio) and spinal canal ratio.
The mean values of pedicle width of the right and left was found to be gradually increased from L1 to L5 level in both genders. The mean pedicle width in males was (8.39 ± 1.23) mm and in females was 8.47 ± 1.17 mm , the measurement demonstrated that there was significant different between males and females participant(p≤ 0.05) for L3. Results also demonstrated that Pedicle width measurements at L5 was significantly larger in older age than in younger age with no significant differences were found between the mean pedicle width for older and younger ages .
Results conceived that there was no statistical significant difference found between the gender regarding pedicle height and spinal canal width and chord length. Regarding age the study demonstrated statistically significant relation between older and younger ages at L1,L2 and L3 for the transverse pedicle angle(TPA). The angle of inclination showed that the lumbar vertebrae increased gradually from L1 to L5 in both genders . The largest (TPA) was located at female L5 ((30.70 o) and the smallest (TPA) was located at female L1 (18.49 o) and the mean (TPA) in the older age was larger than the mean (TPA) in the younger age with highly significant differences at (p ≤ 0.05) being depicted at all vertebral levels L1to L5. The largest sagittal pedicle angles (SPA) was found in both genders at L5 (18.01o) and L5 (17.45 o) respectively, and the lowest (SPA) was found in males and females at L1 (14.09 o) and L1 (13.97 o) respectively.
The study reveals that there is no significant difference between gender regarding sagittal pedicle angles (SPA). The largest mean value in (mm) for the variable vertebral body width (VBW) was seen at vertebral level L5 in both males (43.97±3.09) and females (43.57±2.51) and the least was at vertebral level L1 in both males (33.29±2.80) and females (32.90±2.54) with statistically significant difference between genders at L3 and L4. Nevertheless, the results suggest that the average mean values for the vertebral body depth (VBD) was higher in males than in females with highly significant difference between gender at all vertebral levels with exception of L5.
There is no statically significant difference between genders regarding the spinal canal depth (SCD) at each vertebral levels.
The pedicle index (PI ratio) demonstrated that there was gradually increasing from L1 to L5 and the results among genders conceived that pedicle index ratio were greater in females than males at each lumbar level with exception of L1, which was greater in males. The pedicle index curve is similar to both the PDH curve and the PDW curve, especially at lumbar levels of L1–L3. PDW curve demonstrated positive linear relationship with Pedicle index and PDH curve demonstrated negative linear relationship with Pedicle index, whereas in the measurements of pedicle ratio were gradually increased from L1 to L5; however, that pedicle ratio were greater in females than males at each lumbar level except for L1 which was greater in males. The pedicle ratio curve was similar to the PDW curve than the VBW curve, especially at lumbar levels of L1–L2, and the PDW curve depicted highly positive linear relationship with Pedicle ratio and VBW curve demonstrated negative linear relationship with Pedicle ratio. Regarding the spinal canal ratio, it demonstrated that the ratio between the width of spinal canal and lumbar vertebral body was 0.6 at L1, L2 and L3 but it becomes 0.5 at L4 and 0.4 at L5. The ratio of the spinal canal demonstrated that there it was gradually decreasing from L1 to L5. This ratio has also demonstrated that the spinal canal ratio was similar to the SCW curve than the VBW curve, along lumbar vertebral levels of L1–L5, SCW curve demonstrated a positive linear relationship with spinal canal ratio and VBW curve depicted no linear relationship with spinal canal ratio.
A Local reference values of lumbar vertebral measurements was established for Saudi-Jazan population. These data might be helpful for the orthopedic surgeons dealing with lumbar vertebral surgery particularly the transpedicular fixation in choosing the suitable threaded screw that can be safely accommodated by the pedicle as orthopedic surgeons should therefore be aware of racial disparities on pedicular parameters.
Thesis
2022-09-15T00:00:00ZEstimation of Non-Small Cell Lung Carcinoma Gross Target Volume Using Fluorine-18 Fluorodeoxyglucose Positron Emission TomographyAwadain, Sami Yahia IbrahimSupervisor, -Mohammed Elfadil Mohamed Gar Elnabihttps://repository.sustech.edu/handle/123456789/278722022-12-05T10:33:05Z2021-10-17T00:00:00ZEstimation of Non-Small Cell Lung Carcinoma Gross Target Volume Using Fluorine-18 Fluorodeoxyglucose Positron Emission Tomography
Awadain, Sami Yahia Ibrahim; Supervisor, -Mohammed Elfadil Mohamed Gar Elnabi
The aim of the study is to estimate and identify the GTV of NSCLC with fluorine-
18 fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) scan instead
of using the CT imaging, The PET scan so useful in estimation of sub mucosal
extension of the tumor as well as in staging and restaging of lung carcinomas and
changing in gross target volume either positively (+) or negatively (-).
This study was conducted in Kuwait Cancer Control Center (kccc) in Kuwait City,
during the period 2016 to 2018.
The study sample included 156 patients with non- small cell lung carcinoma
underwent whole body PET/CT scan.
The features extracted from PET/CT images using Second order statistic and All
these features were calculated for all images and then the data were ready for
discrimination which was performed using step-wise technique in order to select the
most significant feature that can be used to classify the lung cells from PET/CT
images and the results show that The classification showed that the lung cells were
classified well from the rest of the tissues although it has characteristics mostly
similar to surrounding tissue. The classification score matrix generated by linear
discriminate analysis and the overall classification accuracy of lung cells 96.0%,
were the classification accuracy of cardiac 91.6%, lung accuracy 100%, the tumor
99.6%, While the submucosal showed a classification accuracy of 91.2%.
Texture analysis depending on the relative attenuation coefficient of tissues and can
used to avoid invasive technique if the base line for individual tissues being
determined and algorithmic aided computer have been applied.
Thesis
2021-10-17T00:00:00Z