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| 1 | Prevalence of unsuspected thyroid nodules in adults on contrast enhanced 16-and 64-MDCT of the chest显示文摘AIM: To determine the prevalence of unsuspected thyroid nodules on contrast enhanced 16and 64-modified discrete cosine transform (MDCT) of the chest, in a population of adult outpatients imaged for indications other than thyroid disease. METHODS: This retrospective study involved review of intravascular contrast-enhanced MDCT scans of the chest from 3077 consecutive adult outpatients, to identify unsuspected thyroid nodules. Exclusion criteria included history of thyroid cancer, known thyroid nodules or thyroid disease and risk factors for thyroid cancer, as evidenced by their medical records. One of 9 radiologists recorded number of nodules, location and bidirectional measurement of largest nodule, as well as amount of thyroid visualized on the chest computed tomography (CT). Presence of nodule was correlated with age, gender, race and percentage of thyroid imaged. RESULTS: A total of 2510 (2510/3077 or 81.6%) study subjects were included in the data analysis; among them,one or more nodules were identified in 629 subjects (629/2510 or 25.1%), with 242 (242/629 or 38.5%) having multiple nodules. Patients with nodule(s) were significantly older than those without (64 ± 13 years vs 58 ± 14 years, P < 0.0001), and female gender was associated with presence of nodule(s) (373/1222 or 30.5% vs 256/1288 or 19.9%, P < 0.0001). Women were also more likely having multiple nodules (167/373 or 44.8%) compared to men (75/256 or 29.3%, P < 0.0001). The majority of nodules (427/629 or 67.9%) were less than 1 cm. CONCLUSION: This retrospective review revealed a prevalence of 25.1% for unsuspected thyroid nodules on contrast-enhanced chest CT. | Sameer Ahmed Pamela T Johnson Karen M Horton Atif Zaheer Saline Tsai Elliot K Fishman | 2012 | World Journal of Radiology2012，4，7： | 4 |
| 2 | In- cremental health care utilization and costs for acute otitis media in children显示文摘 | Ahmed Sameer Shapiro Nina L Bhattacharyya NeilJ | 2014 | The Laryngoscope2014，1，： | 1 |
| 3 | Late endocarditis of Amplatzer atrial septal occluder device in a child显示文摘Bacterial endocarditis following atrial septal defect closure using Amplatzer device in a child is extremely rare. We report a 10-year-old girl who developed late bacterial endocarditis, 6 years after placement of an Amplatzer atrial septal occluder device. Successful explantation of the device and repair of the resultant septal defect was carried out using a homograft patch. The rare occurrence of this entity prompted us to highlight the importance of a closed long-term follow up, review the management and explore preventive strategies for similar patients who have multiple co-morbidities and a cardiac device. A high index of suspicion is warranted particularly in pediatric patients. | Neerod K Jha Laszlo Kiraly John SK Murala Csaba Tamas Haitham Talo Hazem El Badaoui Magdi Tofeig Malaika Mendonca Sameer Sajwani Mary A Thomas Sura Ahmed Al Doory Mohammad D Khan | 2015 | World Journal of Cardiology2015，7，10： | 1 |
| 4 | Metastatic disease to the pancreas: pathologic spectrum and CT patterns显示文摘 | Sameer Ahmed Pamela T. Johnson Ralph Hruban Elliot K. Fishman | 2013 | Abdominal Imaging2013，，1： | 1 |
| 5 | DNA-decorated carbon-nanotube-based chemical sensors on complementary metal oxidesemiconductor circuitry显示文摘 | Chia-Ling Chen Chih-Feng Yang Vinay Agarwal Taehoon Kim Sameer Sonkusale Ahmed Busnaina Michelle Chen Mehmet R Dokmeci | 2010 | Nanotechnology2010，，9： | 1 |
| 6 | Comparison of open and closed hyperthermic intraperitoneal chemotherapy: Results from the United States hyperthermic intraperitoneal chemotherapy collaborative显示文摘BACKGROUND Cytoreductive surgery(CRS)with hyperthermic intraperitoneal chemotherapy(HIPEC)for peritoneal carcinomatosis can be performed in two ways:Open or closed abdominal technique.AIM To evaluate the impact of HIPEC method on post-operative and long-term survival outcomes.METHODS Patients undergoing CRS with HIPEC from 2000-2017 were identified in the United States HIPEC collaborative database.Post-operative,recurrence,and overall survival outcomes were compared between those who received open vs closed HIPEC.RESULTS Of the 1812 patients undergoing curative-intent CRS and HIPEC,372(21%)patients underwent open HIPEC and 1440(79%)underwent closed HIPEC.There was no difference in re-operation or severe complications between the two groups.Closed HIPEC had higher rates of 90-d readmission while open HIPEC had a higher rate of 90-d mortalities.On multi-variable analysis,closed HIPEC technique was not a significant predictor for overall survival(hazards ratio:0.75,95%confidence interval:0.51-1.10,P=0.14)or recurrence-free survival(hazards ratio:1.39,95%confidence interval:1.00-1.93,P=0.05)in the entire cohort.These findings remained consistent in the appendiceal and the colorectal subgroups.CONCLUSION In this multi-institutional analysis,the HIPEC method was not independently associated with relevant post-operative or long-term outcomes.HIPEC technique may be left to the discretion of the operating surgeon. | Jennifer L Leiting Jordan M Cloyd Ahmed Ahmed Keith Fournier Andrew J Lee Sophie Dessureault Seth Felder Jula Veerapong Joel M Baumgartner Callisia Clarke Harveshp Mogal Charles A Staley Mohammad Y Zaidi Sameer H Patel Syed A Ahmad Ryan J Hendrix Laura Lambert Daniel E Abbott Courtney Pokrzywa Mustafa Raoof Christopher J LaRocca Fabian M Johnston Jonathan Greer Travis E Grotz | 2020 | World Journal of Gastrointestinal Oncology2020，12，7： | 1 |
| 7 | 为肾的房间癌的 MDCT 成像追随者肾切除术: 协议优化和肿瘤的模式复发显示文摘 The purpose of this pictorial essay is to review the common and uncommon sites of renal cell carcinoma recurrence throughout the body by examining their appearances on computerized tomography(CT). CT imaging protocols will be discussed. The sites of recurrence have been categorized into 4 groups: chest and mediastinum, abdomen and pelvis, musculoskeletal, and neurological. For each site of recurrence, a representative CT image correlate with discussion is provided. The unique CT appearance of renal cell carcinoma recurrence and how it can be used in lesion detection will be discussed. Renal cell carcinoma recurrences are hypervascular like the primary tumor, which can aid in not only lesion detection but also in some cases, differentiation from other primary tumors. Through CT case review of various sites of recurrence, lesions are shown to be easily seen on arterial phase while sometimes being nearly inconspicuous on venous or delayed phases. Coronal and sagittal reconstructions can also improve diagnostic sensitivity. CT is the most commonly used imaging tool for surveillance of renal cell carcinoma recurrence after nephrectomy. Knowledge of sites of recurrence as well as the utility of arterial phase imaging and multiplanar reconstructions will aid in optimizing detection of disease recurrence. | Stephanie F Coquia Pamela T Johnson Sameer Ahmed Elliot K Fishman | 2013 | World Journal of Radiology2013，5，11： | 1 |
| 8 | 'Runs' from a run: A case of exercise induced ischemic colitis显示文摘Marathon running is a strenuous activity that placesstress on the gastrointestinal system.[1] In fact, 30% to81% of runners report gastrointestinal complaints, whichinclude bloating, abdominal cramps, rectal incontinence,and gastrointestinal bleeding. | Ahmed Faress Sameer Masood Ahmed Mian | 2017 | World Journal of Emergency Medicine2017，8，4： | 0 |
| 9 | Brain Tumor Auto-Segmentation on Multimodal Imaging Modalities Using Deep Neural Network显示文摘Due to the difficulties of brain tumor segmentation, this paper proposes a strategy for extracting brain tumors from three-dimensional MagneticResonance Image (MRI) and Computed Tomography (CT) scans utilizing3D U-Net Design and ResNet50, taken after by conventional classificationstrategies. In this inquire, the ResNet50 picked up accuracy with 98.96%, andthe 3D U-Net scored 97.99% among the different methods of deep learning.It is to be mentioned that traditional Convolutional Neural Network (CNN)gives 97.90% accuracy on top of the 3D MRI. In expansion, the imagefusion approach combines the multimodal images and makes a fused image toextricate more highlights from the medical images. Other than that, we haveidentified the loss function by utilizing several dice measurements approachand received Dice Result on top of a specific test case. The average mean scoreof dice coefficient and soft dice loss for three test cases was 0.0980. At thesame time, for two test cases, the sensitivity and specification were recordedto be 0.0211 and 0.5867 using patch level predictions. On the other hand,a software integration pipeline was integrated to deploy the concentratedmodel into the webserver for accessing it from the software system using theRepresentational state transfer (REST) API. Eventually, the suggested modelswere validated through the Area Under the Curve–Receiver CharacteristicOperator (AUC–ROC) curve and Confusion Matrix and compared with theexisting research articles to understand the underlying problem. ThroughComparative Analysis, we have extracted meaningful insights regarding braintumour segmentation and figured out potential gaps. Nevertheless, the proposed model can be adjustable in daily life and the healthcare domain to identify the infected regions and cancer of the brain through various imagingmodalities. | Elias Hossain Md.Shazzad Hossain Md.Selim Hossain Sabila Al Jannat Moontahina Huda Sameer Alsharif Osama S.Faragallah Mahmoud M.A.Eid Ahmed Nabih Zaki Rashed | 2022 | Computers, Materials & Continua2022，，9： | 0 |
| 10 | Socio-Economic and Environmental Impacts Assessment of Using Different Rainwater Harvesting Techniques in Sarida Catchment, West Bank, Palestine显示文摘A statistically representative questionnaire targeted people using rainwater harvesting(RWH)techniques in rural communities of Sarida catchment,West Bank,Palestine was distributed and analyzed.The main objective of this study is to assess the social,economic,and environmental impacts of adopting RWH techniques(e.g.cisterns,concrete and clay ponds,Wadi ponds,earth dams,and stone terraces)in different uses to increase water availability.The results showed a simple sharing of the female component among beneficiaries,while concrete ponds and cisterns were the most used techniques.Actually,social impacts were noticeable by sharing the same RWH structure and reflected to responsibility skills and role exchange increases.On the other hand,RWH techniques showed a significant economic impact for end users represented by enhancing domestic,agricultural,and recreational activities leading to good profit increase.In addition to food security as output,the most important environmental impact was water wasting prevention,which in turn could be linked to sustainable water management and considered as universal challenge for future generations. | Marwan Ghaleb Ghanem Wasim Ahmed Sameer Shadeed Michel Riksen | 2020 | Journal of Geographical Research2020，3，2： | 0 |
| 11 | Trends and risk factors for opioid administration for non-emergent lower back pain显示文摘BACKGROUND Non-emergent low-back pain(LBP)is one of the most prevalent presenting complaints to the emergency department(ED)and has been shown to contribute to overcrowding in the ED as well as diverting attention away from more serious complaints.There has been an increasing focus in current literature regarding ED admission and opioid prescriptions for general complaints of pain,however,there is limited data concerning the trends over the last decade in ED admissions for non-emergent LBP as well as any subsequent opioid prescriptions by the ED for this complaint.AIM To determine trends in non-emergent ED visits for back pain;annual trends in opioid administration for patients presenting to the ED for back pain;and factors associated with receiving an opioid-based medication for non-emergent LBP in the ED METHODS Patients presenting to the ED for non-emergent LBP from 2010 to 2017 were retrospectively identified from the National Hospital Ambulatory Medical Care Survey database.The“year”variable was transformed to two-year intervals,and a weighted survey analysis was conducted utilizing the weighted variables to generate incidence estimates.Bivariate statistics were used to assess differences in count data,and logistic regression was performed to identify factors associated with patients being discharged from the ED with narcotics.Statistical significance was set to a P value of 0.05.RESULTS Out of a total of 41658475 total ED visits,3.8%(7726)met our inclusion and exclusion criteria.There was a decrease in the rates of non-emergent back pain to the ED from 4.05%of all cases during 2010 and 2011 to 3.56%during 2016 and 2017.The most common opioids prescribed over the period included hydrocodone-based medications(49.1%)and tramadol-based medications(16.9),with the combination of all other opioid types contributing to 35.7%of total opioids prescribed.Factors significantly associated with being prescribed narcotics included age over 43.84-years-old,higher income,private insurance,the obtainment of radiographic imaging in the ED,and region of the United States(all,P<0.05).Emergency departments located in the Midwest[odds ratio(OR):2.42,P<0.001],South(OR:2.35,<0.001),and West(OR:2.57,P<0.001)were more likely to prescribe opioid-based medications for non-emergent LBP compared to EDs in the Northeast.CONCLUSION From 2010 to 2017,there was a significant decrease in the number of nonemergent LBP ED visits,as well as a decrease in opioids prescribed at these visits.These findings may be attributed to the increased focus and regulatory guidelines on opioid prescription practices at both the federal and state levels.Since nonemergent LBP is still a highly common ED presentation,conclusions drawn from opioid prescription practices within this cohort is necessary for limiting unnecessary ED opioid prescriptions. | Chukwuweike U Gwam Ahmed K Emara Noor Chughtai Sameer Javed T David Luo Kevin Y Wang Morad Chughtai Tadhg O'Gara Johannes F Plate | 2021 | World Journal of Orthopedics2021，12，9： | 0 |
| 12 | Modular Multilevel Converter with Wireless Magnetic Power Decoupling for Three-phase MV Adjustable-speed Drives显示文摘In this paper,we propose a modular multilevel converter(MMC)with a wireless magnetic power decoupling approach suitable for medium-voltage high-power variable-speed machine drives.Our proposed power decoupling approach is independent of the operating frequency,which solves the issue of wide fluctuations of low-frequency voltage ripple components in submodule(SM)capacitors,especially at low-speed operations without using any ripple power capacitor.Employing wireless magnetic elements reduces the amount of high-voltage insulation between the transformer windings,resulting in a significant reduction in the overall size of the system.The basic idea of our proposed approach is to magnetically couple the instantaneous three-phase ripple power of each of the three adjacent-arm SMs.The proposed MMC is free from low-frequency capacitors,resulting in enhanced system reliability,volume,and lifetime.The operation principles of the proposed MMC are explained,and a control design is introduced.The performance of the proposed scheme was verified via simulation and experimental tests. | Mohamed Atef Tawfik Mohammad Sameer Irfan Ashraf Ahmed Joung-Hu Park | 2022 | CSEE Journal of Power and Energy Systems2022，8，5： | 0 |
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