Introduction: E-learning is the use of the internet and associated devices for educational purposes without geographical constraints. This study aims to assess the perception of students at King Saud bin Abdulaziz University for Health Sciences in Jeddah, Saudi Arabia, about E-learning as a teaching modality. Methods: This cross-sectional study was conducted between June 2017 and June 2018. The inclusion criteria consisted of healthcare students (medicine, nursing, and college of sciences and health professions). A 40-item closed-ended questionnaire was distributed to the participants and was divided into six main parts: perception, diversity, implications, efficiency, acceptability, and accessibility of E-learning. Results: The response rate was 94.4% (total = 410, retrieved = 387), of which 61.8% (n = 239) stated that they had heard something about E-learning. Meanwhile, 52.2% (n = 202) of students had no idea about virtual patients. Notably, 73.1% (n = 283) agreed that cell phones can be used as a teaching modality, whereas 52.2% (n = 202) opined that cell phones can play a role in stimulating critical thinking among medical students. Sixty percent (n = 232) of students believed that E-learning has the potential to expand educational opportunities. Compared to male students, female students had a higher perception of cheating and fraud (p = 0.039) during E-learning as well as perception of a decline in personal efforts in quest of knowledge (p = 0.032). Conclusion: There is a growing positive perception of E-learning, but the level of acceptance remains low. Further research is required on how to enhance and maximize the confident utilization of ever-increasing opportunities in E-learning. Establishing well-developed E-learning facilities in Saudi educational institutions will tremendously enhance educational opportunities for its students.

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AngioVac is a vacuum-based device approved in 2014 for percutaneous removal of undesirable materials from the intravascular system. Although numerous reports exist with regard to the use of the AngioVac device in aspiration of iliocaval, pulmonary, upper extremity, and right-sided heart chamber thrombi, very few data are present demonstrating its use in treatment of right-sided endocarditis. In this case report, we describe the novel device used in debulking a large right-sided tricuspid valve vegetation reducing the occurrence of septic embolisation and enhancing the efficacy of antibiotics in clearance of bloodstream infection. Further research is needed in larger RSIE patient populations to confirm the benefits and the potential of improved outcomes associated with the AngioVac device as well as identify its potential complications.

and military devices. Among these applications, medical diagnostics is particularly significant, but it presently requires direct exposure to high doses of radiation, which is harmful to human health, increasing cancer risk, especially in children. [1,2] Hence, X-ray detectors possessing both high sensitivity and high resolution with a low light interface noise [3,4] are required to minimize the radiation exposure during routine medical diagnostics. In the pertinent literature, use of conventional semiconductors for direct X-ray detection has been reported by several groups, including amorphous Se, [5] crystalline Si, [6] Ge, [7] HgI 2 , [8] CdTe, [9,10] and CdZnTe, [9,10] indicating that the most effective materials are indirect bandgap semiconductors [5-10] that exhibit low light interference noise. However, as such devices possess low sensitivity due to the low atomic number values of their materials, [7] as well as they still require expensive fabrication and complex processing methods, there is a high industrial demand for cost-effective highly sensitive X-ray detectors that are more suited for mass production. Ionic perovskite crystals can be processed from solution at low temperatures, in contrast to covalent bond semiconductors, which require a high-temperature crystallization process. Consequently, lead halogen perovskite has emerged as a promising candidate due to its cost-effectiveness, high crystal quality, high absorption cross-section, high illumination, and ability to form High-energy radiation detectors such as X-ray detectors with low light photoresponse characteristics are used for several applications including, space, medical, and military devices. Here, an indirect bandgap inorganic perovskite-based X-ray detector is reported. The indirect bandgap nature of perovskite materials is revealed through optical characterizations, time-resolved photoluminescence (TRPL), and theoretical simulations, demonstrating that the differences in temperature-dependent carrier lifetime related to CsPbX 3 (X = Br, I) perovskite composition are due to the changes in the bandgap structure. TRPL, theoretical analyses, and X-ray radiation measurements reveal that the high response of the UV/visible-blind yellow-phase CsPbI 3 under high-energy X-ray exposure is attributed to the nature of the indirect bandgap structure of CsPbX 3. The yellowphase CsPbI 3-based X-ray detector achieves a relatively high sensitivity of 83.6 μCGy air −1 cm −2 (under 1.7 mGy air s −1 at an electron field of 0.17 V μm −1 used for medical diagnostics) although the active layer is based solely on an ultrathin (≈6.6 μm) CsPbI 3 nanocrystal film, exceeding the values obtained for commercial X-ray detectors, and further confirming good material quality. This CsPbX 3 X-ray detector is sufficient for cost-effective device miniaturization based on a simple design.