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Strategies to Improve CT Dose Optimization for Hybrid PET/CT Imaging

Open Journal of Medical Imaging 2021年第2期11卷 48-57页

作者： Abdel-Baset Bani Yaseen yasmin md radzi Hussain M. Almohiy Akshay Kohli Mohammad Rawashdeh Faculty of Applied Medical Sciences Jordan University of Science and Technology Irbid Jordan School of Physics Universiti Sains Malaysia Penang Malaysia Department of Radiological Sciences College of Applied Medical Sciences King Khalid University Abha Saudi Arabia Department of Radiology John Hunter Hospital New Lambton Heights Australia

Background: To evaluate whether current dose reduction strategies for the CT component of hybrid Positron Emission Tomography—Computed Tomography (PET/CT) systems could reduce patient dose with maintaining adequate image quality for PET/CT studies. Materials and Methods: Literature survey was initially based on the selection of keywords and years of publication to identify potentially relevant articles, then the further search was conducted on the authors and references from these articles. The abstract of each article was first appraised to decide whether the content was relevant to this research question. The articles were classified into five groups: studies on dosimetry, studies on radiation-induced diseases, studies on dose reduction methods for CT-based attenuation correction (CTAC), studies on dose reduction methods for CT localization, and studies on reducing the need for a full-dose diagnostic CT in PET/CT imaging. 58 peer-reviewed articles were selected and appraised and 29 articles were used to compose this literature review. Results: The published nuclear medicine and medical physics literature were reviewed. CT dose contributed 47% - 81% of the total effective dose of a standard PET/CT study and was associated with radiation-induced diseases. The dose reduction techniques were extracted and divided into three categories: reducing the CT dose for attenuation correction (AC) and localization, selectively localizing CT use, and reducing the need for a full-dose diagnostic CT. Conclusion: Three strategies have been demonstrated, with high potential for reducing patient dose while maintaining an adequate CT image quality, used for CTCA localization and diagnosis, respectively.

关键词： CT Scan Radiation Dose Hybrid Imaging PET Systems CTAC

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Efficacy of intraovarian autologous platelet-rich plasma administration in women with low ovarian reserve: A systematic review and meta-analysis

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Asian pacific Journal of Reproduction 2024年第2期13卷 60-67页

作者： yasmin Sabina Sa’diah Agung Dewanto Lukman A Chandra Department of Obstetrics and Gynecology Faculty of MedicinePublic Health and NursingUniversitas Gadjah MadaYogyakartaIndonesia Department of Pharmacology and Therapy Faculty of MedicinePublic Health and NursingUniversitas Gadjah MadaYogyakartaIndonesia

Objective:To conduct a systematic examination and meta-analysis of the most reliable data from experimental studies evaluating the efficacy of autologous platelet-rich plasma(PRP)on low ovarian ***:A comprehensive search was performed utilizing pertinent search terms across electronic databases,including PubMed,Cochrane,and Google *** included studies that assigned infertile women with low ovarian reserve in experimental *** reserve parameters were measured before and after PRP injection into *** data of each study was retrieved and subsequently ***:Of 301 articles collected and reviewed,six studies were finally included in the *** PRP injection,infertile women showed a non-significant increase in anti-Mullerian hormone(AMH)level(md=0.10;95%CI-0.04,0.23),a significant increase in antral follicular count(AFC)(md=1.88;95%CI 0.47,3.29),and a non-significant reduction in follicle-stimulating hormone(FSH)level(md=-0.22;95%CI-8.32,7.87).Conclusions:Autologous PRP may increase AFC,but not *** it is found beneficial in enhancing ovarian reserve(AFC),further research with strong evidence is still required.

关键词： Platelet-rich plasma Low ovarian reserve Ovarian rejuvenation

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Credit Card Fraud Detection Using Machine Learning Techniques

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Journal of Computer and Communications 2024年第6期12卷 1-11页

作者： Ananya Sarker Must. Asma yasmin md. Atikur Rahman md. Harun Or Rashid Bristi Rani Roy Department of Computer Science and Engineering Bangladesh Army University of Engineering & Technology (BAUET) Natore Bangladesh

Credit card companies must be able to identify fraudulent credit card transactions so that clients are not charged for items they did not purchase. Previously, many machine learning approaches and classifiers were used to detect fraudulent transactions. However, because fraud patterns are always changing, it is becoming increasingly vital to investigate new frauds and develop the model based on the new patterns. The purpose of this research is to create a machine learning classifier that not only detects fraud but also detects legitimate transactions. As a result, the model should have excellent accuracy, precision, recall, and f1-score. As a result, we began with a large dataset in this study and used four machine learning classifiers: Support Vector Machine (SVM), Decision Tree, Naïve Bayes, and Random Forest. The random forest classifier scored 99.96% overall accuracy with the best precision, recall, f1-score, and Matthews correlation coefficient in the experiments.

关键词： Support Vector Machine Decision Tree Nave Bayes Random Forest Matthews Correlation

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Functional constipation in Bangladeshi school aged children:A hidden misty at community

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World Journal of Clinical Pediatrics 2022年第2期11卷 160-172页

作者： md Benzamin ASM Bazlul Karim md Rukunuzzaman md Wahiduzzaman Mazumder Masud Rana Rubaiyat Alam Mohammad Majharul Islam md Shafiul Alam Kamal Hossen Afsana yasmin Kaniz Fathema Mukesh Khadga Aisharza Sultana Aishy Department of Paediatric Gastroenterology and Nutrition Bangabandhu Shiekh Mujib Medical UniversityDhaka 1000Bangladesh Department of Outpatient Hazi Asmot Medical CentreBhairab 2350Bangladesh Department of Paediatric Nephrology Bangabandhu Shiekh Mujib Medical UniversityDhaka 1000Bangladesh Jalalabad Ragib Rabeya Medical College Sylhet 3100Bangladesh

BACKGROUND Constipation is a common problem in children and a frequent cause of hospital visit in both primary&specialized care,which needs proper evaluation&*** of constipation is variable among *** Bangladesh there has been no published data regarding constipation in community among school aged *** To determine the magnitude of functional constipation and its risk factors in community among Bangladeshi school *** This descriptive cross sectional study was conducted in different schools of Dhaka division,*** school aged children between 5-16 years of age who attended school were included in this *** were collected *** clinical history&physical examinations(without digital rectal examination)&available investigations(if done previously)were *** of functional constipation was done by Rome IV criteria and was compared with children without *** with any red flag sign,known chronic disease or any findings suggestive of organic disease and on treatment of constipation were *** analysis of the results was done by using Windows based software device with Statistical Packages for Social Science *** all statistical tests,P value of less than 0.05 was considered as statistically *** Total study populations were 707 and male was 443 and female *** them,134(19%)children had *** constipated children,78 children fulfilled the Rome IV criteria for functional constipation and it was 11%of total *** age of children having functional constipation was 11.24±3.54 years and Male female ratio was 1:***,nausea,abdominal pain,hard stool,blood with hard stool,alternate hard and loose stool and fecal mass in left iliac fossa were analyzed between two group and all were significantly higher in children with functional constipation *** of school,where toilet numbers were inadequate had 2.5 time

关键词： Bangladesh Children Functional constipation

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Assessing Water and Soil Pollution Due to Uttara EPZ, Nilphamari, Bangladesh

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Journal of Geoscience and Environment Protection 2019年第7期7卷 136-153页

作者： md. Emdadul Haque Moury Shermin Arifa yasmin Mukta Department of Disaster Management Begum Rokeya University Rangpur Bangladesh

The Uttara Export Processing Zone (UEPZ) is being the important industrial belt of the northern region. It is an important issue to find out the environmental impact of UEPZ. Water is the most important source of domestic, irrigation and industrial purpose in both rural and urban regions. The present study was carried out to find out the water and soil quality of UEPZ. Five heavy metals were selected (Fe, Cu, Mn, Pb, Cr) to assess water quality of UEPZ and two indices such as heavy metal pollution index (HPI) and contamination index (Cd) were selected to evaluate the impact on water. The results showed that the concentrations of heavy metals in water samples were within the permissible limits of WHO drinking water quality. HPI of water samples in three sites was 20.57 which was lower than 100 the critical value for drinking water. Both results show the region is moderately or slightly polluted. Pollution risks of heavy metal in the soil were evaluated by method of geological acumination index (Igeo) and Pollution load index (PLI) for seven soil samples. The geological evaluation of the cumulative index results showed that the contamination degree of 4 heavy metals follows the sequence of Mn > Zn > Fe > Cu. Then the results of PLI of seven soil sample are 1.474 > 1.398 > 1.372 > 1.308 > 1.302 > 1.290 > 1.289. Both results show the soil sample area were unpolluted to moderately polluted. Finally, an overall impact of UEPZs environment is also discussed in this paper.

关键词： UEPZ Environment Contamination Mitigation Impact Pollution

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An Analysis for Distribution of Natural Radionuclides in Soil, Sand and Sediment of Potenga Sea Beach Area of Chittagong, Bangladesh

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Journal of Environmental Protection 2014年第17期5卷 1553-1563页

作者： Sabina yasmin Bijoy Sonker Barua Masud Kamal md. Abdur Rashid Department of Physics Chittagong University of Engineering and Technology Chittagong Bangladesh Atomic Energy Centre Bangladesh Atomic Energy Commission Chittagong Bangladesh

A HPGe (High Purity Germanium) detector based, low background gamma-ray counting system was used for activity measurement in soil, sand and sediment samples collected from Potenga sea beach area of Chittagong, Bangladesh. The specific radioactivities of Radium (226Ra), Thorium (232Th) and Potassium (40K) were measured in the above samples. The investigation reflects the lower deposition of minerals exist in the collected samples. From the measured specific radioactivities of the above three natural radionuclides, the radium equivalent activity (Raeq), the external hazard index (Hex), the external gamma absorbed dose rate and the annual effective dose were calculated. The obtained mean values of gamma absorbed dose rate in soil and sand samples and annual effective dose in soil, sand and sediment samples were found higher than the worldwide average as reported by United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR, 2000). The Raeq values were in the range of 47.86 to 293.76 Bq·kg-1 and the Hex varied from 0.13 - 0.81, which indicated that the study area was radiologically safe for human being.

关键词： Natural Radioactivity Specific Radioactivity HPGe γ-Ray Detector Radiation Hazard Index Dose Rate Potenga Sea Beach

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COVID-19 Detection from Chest X-Ray Images Using Convolutional Neural Network Approach

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Journal of Computer and Communications 2023年第5期11卷 29-41页

作者： md. Harun Or Rashid Muzakkir Hossain Minhaz Ananya Sarker Must. Asma yasmin md. Golam An Nihal Department of Computer Science and Engineering Bangladesh Army University of Engineering & Technology (BAUET) Qadirabad Cantonment Natore Bangladesh

COVID-19 is a respiratory illness caused by the SARS-CoV-2 virus, first identified in 2019. The primary mode of transmission is through respiratory droplets when an infected person coughs or sneezes. Symptoms can range from mild to severe, and timely diagnosis is crucial for effective treatment. Chest X-Ray imaging is one diagnostic tool used for COVID-19, and a Convolutional Neural Network (CNN) is a popular technique for image classification. In this study, we proposed a CNN-based approach for detecting COVID-19 in chest X-Ray images. The model was trained on a dataset containing both COVID-19 positive and negative cases and evaluated on a separate test dataset to measure its accuracy. Our results indicated that the CNN approach could accurately detect COVID-19 in chest X-Ray images, with an overall accuracy of 97%. This approach could potentially serve as an early diagnostic tool to reduce the spread of the virus.

关键词： COVID-19 Chest X-Ray Images CNN Virus Accuracy

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Effect of Seeding Density on Mat-Type Seedling Quality for Mechanical Transplanting in Dry Season Rice

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Agricultural Sciences 2021年第11期12卷 1231-1243页

作者： Nilufar yasmin Shaikh md. Ashraful Alam Mohammad Kamruzzaman md. Abdullah Al Mamun AKM Saiful Islam Biotechnology Division Bangladesh Rice Research Institute (BRRI) Gazipur Bangladesh Farm Machinery and Post-Harvest Technology Division Bangladesh Rice Research Institute (BRRI) Gazipur Bangladesh Agricultural Statistics Division Bangladesh Rice Research Institute (BRRI) Gazipur Bangladesh

Rice transplanting with a transplanter is a cost-effective process. Due to labor shortages during the peak time of rice transplanting, it is a promising technology in Bangladesh. However, the high-quality mat-type seedling is a prerequisite factor for mechanical transplanting. The experiments were conducted at three different locations (Gazipur, Tangail, and Rangpur) during the dry season (Boro)/2019-20 to determine the best seeding density for high-quality mat-type seedlings to be prepared for mechanical rice transplanters. The effects of seeding rate on seedling quality such as survival rate, seedling strength, stem thickness of newly released boro rice varieties BRRI dhan86, BRRI dhan89, and BRRI dhan92 were studied using four seeding rates (130, 140, 150, 160 g/tray). Results revealed that BRRI dhan92 showed quick seedling emergence compared to BRRI dhan89 and BRRI dhan86. Seedling mortality was found the lowest BRRI dhan92 while the highest in BRRI dhan86. 25 - 30 days old seedling was found suitable for mechanical transplanting in terms of seedling mortality. Seedling height increased with the increase in seed density. BRRI dhan92 showed the highest stem thickness followed by BRRI dhan89 and BRRI dhan86 with seed rate 150 - 160 g per tray. The suitable seeding rate (150 - 160 g/tray) for the studied varieties was found better for raising mat-type seedlings suitable for mechanical transplanting, which could coordinate the production of larger population growth and higher harvest index to achieve high grain yield.

关键词： Rice Seed Density Mortality Seedling Age Stem Thickness Seedling Strength

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Effect of Garlic Paste on the Physicochemical Attributes of Cheese

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Food and Nutrition Sciences 2022年第1期13卷 6-16页

作者： Mouluda Sohany md. Abdul Halim Most. Jesmin Akhter Sabina yasmin Fatehatun Noor Department of Food Engineering and Technology Faculty of Engineering Hajee Mohammad Danesh Science and Technology University Dinajpur Bangladesh Department of Food Science and Nutrition Faculty of Engineering Hajee Mohammad Danesh Science and Technology University Dinajpur Bangladesh Department of Food Processing and Preservation Faculty of Engineering Hajee Mohammad Danesh Science and Technology University Dinajpur Bangladesh

Cheese has recently gained a lot of popularity around the world. This experiment was carried out to make cheese from skim milk with the addition of garlic paste. This study focused on the impact of garlic paste on the physicochemical properties of cheese. Cheese samples S1, S2, S3, and S4 were prepared with 0%, 1%, 3%, and 5% garlic paste, respectively, where S1 was the control sample. Compared to sample S1, the higher proportion of garlic paste incorporation resulted in higher viscosity and water holding capacity;nevertheless, lower values for syneresis were obtained. Although no significant change was observed in the pH values, samples S4 (5% garlic) and S1 (0% garlic) exhibited the highest and lowest pH, respectively. The results in this investigation revealed that garlic inclusion had a substantial impact on the physicochemical parameters of the skim milk cheese.

关键词： Skim Milk Cheese Garlic Paste Physicochemical Properties Syneresis Water Holding Capacity

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Status of ESBL Producing Bacteria Isolated from Skin Wound at a Tertiary Care Hospital in Bangladesh

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Advances in Infectious Diseases 2015年第4期5卷 174-179页

作者： Taslima yasmin md. Abdullah Yusuf Mohammed Abdun Nur Sayam Rezwana Haque Golam Mowla Department of Microbiology North Bengal Medical College Sirajgonj Bangladesh Department of Microbiology National Institute of Neurosciences & Hospital Dhaka Bangladesh Narayngonj General Hospital Narayngonj Bangladesh Department of Microbiology Islami Bank Medical College Rajshahi Bangladesh Department of Community Medicine Mymensingh Medical College Mymensingh Bangladesh

Background: ESBL producing bacteria are increasing with an alarming rate with a wide range of infections. Objective: The purpose of the present study was to see the status of ESBL producing bacteria isolated from skin wounds. Methodology: This cross sectional study was conducted in the Department of Microbiology at Mymensingh Medical College, Bangladesh from January 2011 to June 2011 for a period of 6 months. All the patients, at any age with both sexes presented with skin wound infection, were taken as study population. Wound swab was taken from all patients. Specimens were processed and bacteria were isolated and identified according to standard procedure. The ESBL status was confirmed by double disc diffusion test (DDDT) and minimum inhibitory concentration (MIC) by agar dilution method by standard procedure according to Clinical Laboratory Standard Institute (CLSI). Antimicrobial resistance was done by disc diffusion method. Result: A total number of 84 wound swabs were taken of which the most common ESBL producing bacteria were Esch. coli (61.5%),?Proteus species (78.3%) and Klebsiella species (88.9%). All the isolates were sensitive to imipenem and nitrofurantoin followed by amikacin (92.9%). Conclusion: In conclusion, ESBL producing E. coli is the most common bacteria causing skin wound infection followed by Proteus species with a reduced sensitivity towards antibiotics.

关键词： Extended Spectrum β-Lactamases Escherichia coli Klebsiella Species Gram Negative Bacilli

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