ORCID Profile
0000-0002-2938-4365
Current Organisation
USDA Agricultural Research Service
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Publisher: SAGE Publications
Date: 2020
Abstract: To document the mammographic breast density (MBD) distribution of Jordanian women and the relationship with MBD with age. Correlation between breast cancer diagnosis and density was also explored. A retrospective review of 660 screening mammograms from King Abdullah University Hospital was conducted. Mammograms were classified into 2 groups: normal (return to routine screening) and breast cancer and rated using the American College of Radiology (ACR) Breast Imaging-Reporting and Data System (BI-RADS) 5th edition for MBD. The association between MBD and age was assessed by descriptive analyses and Kruskal-Wallis test. To compare between normal and breast cancer groups, chi-square post hoc tests with Bonferroni adjustment was used. Groups consisted of 73.9% (n = 488) normal group and 26.1% (n = 172) breast cancer group. A significant inverse relationship was demonstrated between age and MBD among the normal ( r = −.319, P .01) and breast cancer group ( r = −.569, P .01). In total, 69% (n = 336) of women in the normal group and 71% (n = 122) in the breast cancer group and 79.1% (n = 159) of the normal group and 100% (n = 48) of the breast cancer group aged 40 to 49 years reported high MBD (ACR BI-RADS c or d). Most of women in both the normal and breast cancer groups evidenced increased MBD. Increased MBD was inversely proportional to age. As MBD has a known link to increased breast cancer risk and the decreased sensitivity of mammography and it is vital that future screening guidelines for Jordanian women consider the unique breast density distribution of this population.
Publisher: Elsevier BV
Date: 11-2018
DOI: 10.1016/J.COMPBIOMED.2018.09.020
Abstract: To investigate the knowledge and practice of computed tomography (CT) radiographers working in Jordan. This Institutional Review Board (IRB) approved study disseminated a questionnaire via social media and recruited 54 Jordanian CT radiographers. The questionnaire comprised 36 questions ided into four sections: demographics an evaluation of knowledge regarding CT exposure modifications to CT exposure for paediatric patients dose units and diagnostic reference levels (DRLs). Descriptive and inferential statistics including Chi-square tests, Mann-Whitney U tests, independent s les t-tests and Kruskal-Wallis H tests were employed. Statistical significance was considered below p < 0.05. The 54 participants had various qualifications, with the majority holding a Bachelor's degree (n = 35, 64.8%) and the rest holding a Diploma (n = 19, 35.2%). In order to pass the questionnaire, participants needed to score 13 correct answers. The overall number of radiographers who correctly passed the questionnaire was 48 (88.9%). None of the participants correctly stated all the DRL values for chest, abdomen and brain CT. However, four out of 54 respondents (7.4%) knew the chest DRL value, three (5.6%) participants correctly estimated the abdominal DRL value but only two (3.7%) knew the DRL for the brain. Good general knowledge was found amongst radiographers regarding the relationship of each exposure parameter to the image quality and patient dose. However, there was poor knowledge of diagnostic reference levels and the order of the organ radiation sensitivity. The need for CT radiographers to undertake further education that focuses on radiation exposure in CT is highlighted.
Publisher: Wiley
Date: 30-08-2019
DOI: 10.1002/ACM2.12711
Publisher: SAGE Publications
Date: 17-05-2018
Abstract: The study aims to assess the level of patients’ awareness and knowledge regarding radiation and dosage along with the associated risks from computed tomography (CT) scan. This cross-sectional study used questionnaires, which were distributed to the diagnostic imaging departments of six large local hospitals in Jordan between September 2014 and March 2015. A total of 600 patients completed the questionnaire, out of which, 52.33% of respondents were female and 47.6% male. The findings show insignificant effects of gender on patient’s knowledge ( P = .596) and significant effect of employment and profession on positive scores ( P = .000). Similarly, no statistical differences were found between gender and correct answers ( P = .707). This cohort of patients demonstrated a lack of awareness and knowledge about the use of ionizing radiation for diagnostic imaging. Thus, there may exist a similar lack of information that will require imaging professionals to raise patients’ awareness and offer them the appropriate information.
Publisher: American Geophysical Union (AGU)
Date: 26-11-2020
DOI: 10.1029/2020GB006561
Abstract: A potential strategy for mitigating nitrous oxide (N 2 O) emissions from permanent grasslands is the partial substitution of fertilizer nitrogen (N fert ) with symbiotically fixed nitrogen (N symb ) from legumes. The input of N symb reduces the energy costs of producing fertilizer and provides a supply of nitrogen (N) for plants that is more synchronous to plant demand than occasional fertilizer applications. Legumes have been promoted as a potential N 2 O mitigation strategy for grasslands, but evidence to support their efficacy is limited, partly due to the difficulty in conducting experiments across the large range of potential combinations of legume proportions and fertilizer N inputs. These experimental constraints can be overcome by biogeochemical models that can vary legume‐fertilizer combinations and subsequently aid the design of targeted experiments. Using two variants each of two biogeochemical models (APSIM and DayCent), we tested the N 2 O mitigation potential and productivity of full factorial combinations of legume proportions and fertilizer rates for five temperate grassland sites across the globe. Both models showed that replacing fertilizer with legumes reduced N 2 O emissions without reducing productivity across a broad range of legume‐fertilizer combinations. Although the models were consistent with the relative changes of N 2 O emissions compared to the baseline scenario (200 kg N ha −1 yr −1 no legumes), they predicted different levels of absolute N 2 O emissions and thus also of absolute N 2 O emission reductions both were greater in DayCent than in APSIM. We recommend confirming these results with experimental studies assessing the effect of clover proportions in the range 30–50% and ≤150 kg N ha −1 yr −1 input as these were identified as best‐bet climate smart agricultural practices.
Publisher: Informa UK Limited
Date: 31-05-2016
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 09-2018
DOI: 10.1097/HP.0000000000000886
Abstract: Background: Radiologists are at higher risk of adverse health effects due to their occupational radiation exposure therefore, applying protection techniques is imperative. Studies on radiologists’ compliance in this regard are scarce. We aimed to assess compliance with radiation safety practices among radiologists. Methods: Questionnaires were distributed to radiologists in tertiary hospitals. The questionnaire was designed to assess compliance in three domains: using personal protective devices, using exposure-reduction techniques during fluoroscopic exposures, and using personal dose-monitoring devices. Descriptive analysis of the compliance was performed. Results: Sixty-two radiologists were included in the analysis. Use of leaded aprons and thyroid shields was commonplace, whereas only 3.2% ever use leaded eyeglasses. About half of the radiologists always considered reducing the time of exposure and avoided exposure by the primary beam, and the other half did that sometimes. Most of the radiologists (66.1%) always complied with reducing the number of unnecessary exposures, and the rest only complied sometimes. Most of the radiologists (93.5%) always used single personal dose-monitoring devices, most commonly at the neck level over the collar. There was no difference in compliance between different sexes, position descriptions, hospital types, hospital sizes, or years of experience. Conclusion: Future compliance improvement strategies for radiologists should focus on use of thyroid shields and leaded eyeglasses and use of exposure-reduction techniques during fluoroscopic operations.
Publisher: IOP Publishing
Date: 10-2019
Abstract: This study aimed to investigate the current status of Diagnostic Reference Levels (DRLs) in paediatric CT across Jordan. The dose data for four main CT examinations (brain, chest, abdominopelvic, and chest, abdomen and pelvis (CAP)) in hospitals and imaging centres (n = 4) were measured. The volume CT dose index (CTDI
Publisher: Elsevier BV
Date: 11-2017
DOI: 10.1016/J.RADI.2017.07.005
Abstract: Nosocomial infections add health-related and financial burdens on health systems. This study aims to evaluate the radiographers' knowledge of nosocomial infection control practices in Jordan. A cross-sectional questionnaire-based assessment was conducted. The main domains of the knowledge based test were the nature of nosocomial infections, standard precautions, and infection control practices specific to the radiology department. Comparison of knowledge among radiographers was assessed using the Student t-test and ANOVA. Multiple linear regression was used to find predictors of the knowledge score. The final analysis included 100 radiographers from educational, private, and public hospitals. Mean knowledge score was 66.2% (SD: 20.3%, range: 25.0-100%). Questions with the lowest correctly scored were about the main source of infections (17%), recapping used needles (27%), gloves use (27%), the necessity of using overshoes (26%) and a cap (26%) when there is a risk of biological fluid splashes, the necessity of using sterile gloves (7%) and protective masks (5%) during all invasive procedures, the manoeuvrability around a sterile field (54%), and the safety of passing the imaging plate to the scrub nurse in order to place it under the radiographer's direction (37%). Predictors of knowledge score were the academic degree and training status (R Knowledge of infection control practices among Jordanian radiographers was moderate. Future training should focus on handling used needles, the use of protective barriers, and the manoeuvrability around sterile fields. Improved academic curriculum and on-site training could enhance knowledge in infection control practices.
Publisher: Wiley
Date: 23-06-2020
DOI: 10.1002/JMRS.414
Location: United States of America
No related grants have been discovered for haytham alewaidat.