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Search Results: 1 - 10 of 191353 matches for " Saddig D. Jastaniah "
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Novel Mixture of Materials Produces Bone- and Soft Tissue-Like Imaging Density  [PDF]
Saddig D. Jastaniah
Open Journal of Biophysics (OJBIPHY) , 2016, DOI: 10.4236/ojbiphy.2016.64010
Abstract: The objective of the present study was to access to imaging material density close to or identical density imaging of bone and soft tissue, from raw materials of nature to be used in different model applications and to provide comprehensive evaluation of the imaging system and techniques under realistic conditions in radiology departments for educational purposes. The palm tree of abundance in Saudi Arabia was chosen to study the date’s seeds and palm leaves in terms of photographic density. The results achieved were referring to the lack of imaging density of dates seeds and palm leaves compared to bone density. Thus, it was necessary to use two additional materials: Salt and eggshells in order to find the highest density and graphic approach to bone density. The present preliminary study indicated that the permanent and stable model can be achieved by palm leaves, salt & eggshell powder with imaging material density close to the imaging density of the bone and soft tissue for achieving more clinical skills and medical education.
Is Long-Term Cell Phone Use Linked to Breast Cancer? A Review of the Evidence  [PDF]
Saddig D. Jastaniah
Advances in Breast Cancer Research (ABCR) , 2016, DOI: 10.4236/abcr.2016.54016
Abstract: Cancer of the breast is the second leading cause of cancer death among women worldwide. The majority of cancer of the breast cases (95%) is not hereditary. Can long-term cell phone use be linked to breast cancer? It is unlikely that electromagnetic radiation is involved, but it could possibly be due to the generated heat (cell phones only occasionally transmit when people are not talking on them). Therefore, is there any method or reported statistics that can be used to link the increasing breast cancer incidence with cell phone use and placement? Some young women who placed their mobile devices, including cell phones, in their bra believed that it caused their cancer because it was on the same side and in the same area their phone was adjacent to and came into contact with their skin for prolonged periods. This review highlights what is known about the link between cell phone use, which continues to increase rapidly, and breast cancer explores the association between prolonged exposure to non-ionizing radiation from cell phones and breast cancer. In conclusion, until more data are obtained concerning whether carrying a cell phone is associated with breast cancer, great care should be taken to avoid any potential risks. Strenuous efforts should be made to encourage users of cell phones to follow mobile device manufacturers’ recommendations, and if possible, to avoid skin contact until the potential risks, if there are any, are fully understood.
Physical Factors Affecting the Interior Radon-Concentrations  [PDF]
Soliman M. S. Abdalla, Saddig D. Jastaniah
Open Journal of Biophysics (OJBIPHY) , 2013, DOI: 10.4236/ojbiphy.2013.31004
Abstract:

Researchers have realized that radon-contaminated air inside buildings is a principal way of human exposure to certain healthy-risks. A model is developed to estimate radon concentrations which consider various parameters: in indoor air radon (radon-222) concentration, air permeability of ground, air pressure difference between outdoor and indoor at ground level, ventilation of building ground and number of air changes per hour due to ventilation. The radon-222 transport into building might dominated by diffusion, pressure driven flow or/and a mixture of both depending on the actual values of the various parameters. So, in several and regular periods of time: January, April, July and October, radon-222 concentrations have been measured in ten rooms of five elementary schools and in five rooms of one high school at Qena city (Upper Egypt). This has been carried out using alpha scintillation counters. We have noticed that in three rooms the value has exceeded 200 Bqm -3 at the basement and only one room at the first floor, and all values have changed with respect to time and localization: They have decreased from July to January and from basement to first floor. For example, radon-222 concentrations obtained by exposing track detectors varied in the range from 20 Bqm-3 up to 100 Bqm-3. The experimental results of the present work have been well fitted with the presented model (calculations) which supports the validity of the presented model. So, to decrease the level of indoor air radon-222 concentrations and to reduce its harmful effects it is recommended to follow the suggestions in the present study and to limit as possible the use of ceramic in the building construction, increase the hours of ventilation and to restrict the use of underground floors in buildings, the underground Metro and garage parking should be carefully (and even mandatory) ventilated.

Helical Computed Tomography in Evaluation of Selected Cases of Acute Abdomen  [PDF]
Saddig D. Jastaniah, Alamin M. Salih
Advances in Computed Tomography (ACT) , 2014, DOI: 10.4236/act.2014.33006
Abstract: Acute abdomen is a common presentation in emergency medicine. It represents 5% to 10% of all Emergency Department (ED) visits. Diagnosis by imaging includes digital X-ray unit, sonography (US) unit and computed tomography (CT) equipment. During the last years, a trend towards increased use of computed tomography in patients with acute abdomen can be seen. Additionally, patient with severe claustrophobic often cannot tolerate MR scanner. The aim of the present study was to investigate the possibility of optimizing Helical CT parameters in the protocol and emphasize the CT features of selected cases of disorders related acute abdominal complain at the Emergency Department both in general and in a number of selected conditions (Urolithiasis, Aortic Aneurysm Rupture and acute cholecystitis). According to this work findings, non-contrast CT after ultrasound is diagnostic modality for patients with urinary stones in the Emergency Department. Contrast-enhanced CT was highly sensitive for acute aortic syndrome and therefore the CT imaging protocols must be adjusted in order to minimize dose from radiation.
Mobile Phone Use and Risk of Thyroid Gland Lesions Detected by Ultrasonography  [PDF]
Naglaa M. Elsayed, Saddig D. Jastaniah
Open Journal of Radiology (OJRad) , 2016, DOI: 10.4236/ojrad.2016.62021
Abstract: In recent years, widespread use of mobile phones has led to a public debate about possible harmful effects on human health. A lot of researchers studied the possible effect of radiofrequency energy (RFE) emitted from cell phones on the human body. Up to our knowledge no one studied the effect of these waves on the thyroid gland by Ultrasonography (US). Our aim was to investigate the possible effects of EMR arising from cell phones on the thyroid gland using US. A prospective study was done on 180 participants, 110 females and 70 males, ranging in age from 15 to 65. A constructed questionnaire was distributed among them before performing US of the neck. Demographic data along with US findings were collected and statistically analyzed. A total of 46.7% of our participants had abnormal findings of the thyroid gland more in non smart phone users and more in females. The commonest abnormality was multinodular goiter (54%). Expanded researches are still needed to answer the question about the hazards of RFE on human health. All efforts should be made to encourage users of cellular phone to follow mobile device recommendations of manufacturers and avoid its possible hazards as possible.
Physical Measurements for the Accuracy of Cone-Beam CT in Dental Radiography  [PDF]
Wed I. Shaibah, Ibrahim A. Yamany, Saddig D. Jastaniah
Open Journal of Medical Imaging (OJMI) , 2014, DOI: 10.4236/ojmi.2014.42008
Abstract:
The introduction of cone-beam computed tomography (CBCT) for the maxillofacial imaging provided opportunities for dental practitioners to request multiplanar imaging. Currently CBCT is used during implant treatment-planning to measure accurately the height of bone available for implant placement to avoid serious problems e.g. compromising vital structure such as the inferior alveolar nerve during placement of implants. We present a physical method to assess the accuracy of measurements obtained from an i-CAT CBCT dental radiography unit used at king abdulaziz university hospital and to appraise the effect of voxel size on the accuracy of measurement by an i-CAT CBCT unit. Not significant difference was found between the physical and CBCT measurements for all the samples. The maximum measurements variation was + or -0.15 mm. Therefore, the linear measurements from i-CAT CBCT unit are accurate and the adjustment of the scan parameters like the FOV and voxel size will not significantly affect this accuracy.
A Mitigating Technique for the Treatment of Small Volumes Drinking Water from Radon Gas  [PDF]
Saddig D. Jastaniah, Bassam Z. Shakhreet, Hanan Y. Abbas
Open Journal of Biophysics (OJBIPHY) , 2014, DOI: 10.4236/ojbiphy.2014.41001
Abstract:
We made an evaluation of a suitable mitigation technique for the treatment of drinking water that was artificially enriched with Rn-222 in laboratory by placing a radium rich granite stone (pitchblende) in a closed container filled with tap water for several days in order to allow Rn-222 concentration to approach its highest possible level. Experiments were designed to investigate the effectiveness of removal of Rn-222 by diffused bubble aeration method at room temperature. The results showed that this method becomes more efficient at higher airto-water ratios. Better aeration depends on the length of travel of bubbles through the water depth. This method is practical and has low capital cost. The removal of Rn-222 from artificially enriched water can be practically achieved by diffused bubble aeration method to greater than 98%.
Real Time Ultrasound Elastography for the Differentiation of Benign and Malignant Thyroid Nodules  [PDF]
Hamad Elniel H. Eltyib, Ibrahim A. Awad, Naglaa M. Elsayed, Saddig D. Jastaniah
Open Journal of Medical Imaging (OJMI) , 2014, DOI: 10.4236/ojmi.2014.41006
Abstract: The purpose of this study was to evaluate the predictive value of real-time ultrasound elastography (RUE) in differentiating benign from malignant thyroid nodules, with fine needle aspiration cytology analysis as the reference standard. A total of 78 consecutive patients with thyroid nodules who were selected for fine needle aspiration biopsies were examined in this prospective study. 78 nodules in these patients were examined by conventional ultrasound, and ultrasound elastography. The final diagnosis was obtained from cytological findings. Tissue stiffness on ultrasound elastography was scored from 1 (low stiffness over the entire nodule) to 5 (high stiffness over the entire nodule and surrounding tissue). On real-time ultrasound elastography, 47 of 62 benign nodules (76%) had a score of 1 or 2, whereas 15 of 16 malignant nodules had a score of 3 to 5, with sensitivity of 93.7%, specificity of 90%, a positive predictive value of 71%, and a negative predictive value of 98%. Real-time ultrasound elastography is a promising imaging technique that is useful in the differential diagnosis of thyroid cancer. Utilization of ultrasound elastography could reduce the rate of thyroid biopsies because of its high elasticity being highly associated with benign cytology.
Magnetic Resonance Imaging for Screening of Woman at High-Risk of Breast Cancer  [PDF]
Reham G. Garout, Howayda M. Ahmed, Saddig D. Jastaniah, Ibrahim A. Awad
Advances in Breast Cancer Research (ABCR) , 2014, DOI: 10.4236/abcr.2014.33009
Abstract:

MRI is an excellent option for detection of breast cancer for some selected groups, including those patients with a high probability to hit the disease. However, the high costs and low availability of the device have led to a decline in the application of imaging MRI. The aim of this study was to review usefulness of MRI as a new complementary way to detect breast cancer in routine annual checkup for women breasts of certain ages and breast mass. A cross-sectional Descriptive MRI study was performed on 105 asymptomatic women with a mean age of 49 years. The study group with at least one risk factor of breast cancer were presenting for routine annual screening or follow up at King Abdulaziz University Hospital in Jeddah. It has been found that, 48 patients had biopsy, they were recommended by magnetic resonance imaging and only 14 had positive results, while magnetic resonance imaging suggested 16 and mammography had 62 positive results. Magnetic resonance imaging is not recommended for the average-risk or the general population either; it had been advised for screening the high-risk women of breast cancer. Sensitivity of magnetic resonance imaging has been found to be much higher than of mammography but specificity was generally lower. We propose that it is reasonable to consider MRI as a complement to mammography in screening patients who were at high risk for breast cancer because Magnetic Resonance Imaging can detect small foci that are occult in mammography but we don’t advise to check with the general population.

Gallbladder Disorders Detected by Ultrasound  [PDF]
Hamad Elniel H. Eltyib, Adel M. Al-Garni, Saddig D. Jastaniah
Open Journal of Medical Imaging (OJMI) , 2014, DOI: 10.4236/ojmi.2014.42012
Abstract:
Patients who have disease of the biliary tract commonly present with acute right upper quadrant pain, nausea or vomiting, mid-epigastric pain, and/or jaundice. Etiologies include inflammation with or without infection, noninflammatory disorders, and benign or malignant neoplasms of the gallbladder or bile ducts. Ultrasound (US) is now accepted as the initial imaging modality of choice for the work-up of suspected biliary tract disease. A retrospective study was carried out at King Abdulaziz University Hospital to discuss the protocol of ultrasound scanning in demonstrating incidence and complication of Gall-bladder (GB) pathologies. Known cases of GB pathologies (100 patients) were surveyed by ultrasound using spatial digital iU22 Philips Convex probe 3.5 MHz. All patients were evaluated with ultrasonogphy following the international scanning guidelines and protocols. The age of the patients is between (9 - 90) years, 68 Patients (68%) were females and 32 patients (32%) were males. Range of age group of accumulation for gallstone presence was (35 - 50) years in females and above 50 years in males. Incidence of gallbladder pathologies are 59% (female 46% and 13% male). Incidence of gallstone is 37%, and ratio of incidence is between male to female 1:3. Other pathologies of gallbladder were found to be acute cholecystities 12%, chronic cholocystities 5%, sludge 2%, carcinoma of the Gall-bladder 1%, Gall-bladder polyps 1% and Emphysematous choleycystities 1%. Ultransonography is a single imaging modality sufficient for evaluation of patient with suspected gallbladder pathologies (gallstone) which can provide information about the presence of gallstone and more over about site and cause of biliary tract obstruction. Ultrasound is highly sensitive and specific means for diagnosis of the gallbladder disorders.
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