Ahmed Ali Dawud

Dr. Ahmed Ali Dawud

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 October 2023 in BMC Medical Informatics and Decision Making
Verified
Journal Article
Open access
PDF file
YDYared Daniel Daydulo
Yared Daniel Daydulo
BTBheema Lingaiah Thamineni
Bheema Lingaiah Thamineni
ADAhmed Ali Dawud
Ahmed Ali Dawud
Background: Cardiac arrhythmia is a cardiovascular disorder characterized by disturbances in the heartbeat caused by electrical conduction anomalies in cardiac muscle. Clinically, ECG machines are utilized to diagnose and monitor cardiac arrhythmia noninvasively. Since ECG signals are dynamic in nature and depict various complex information, visual assessment and analysis are time consuming and very difficult. Therefore, an automated system that can assist physicians in the easy detection of arrhythmia is needed. Method: The main objective of this study was to create an automated deep learning model capable of accurately classifying ECG signals into three categories: cardiac arrhythmia (ARR), congestive heart failure (CHF), and normal sinus rhythm (NSR). To achieve this, ECG data from the MIT-BIH and BIDMC databases available on PhysioNet were preprocessed and segmented before being utilized for deep learning model training. Pretrained models, ResNet 50 and AlexNet, were fine-tuned and configured to achieve optimal classification results. The main outcome measures for evaluating the performance of the model were F-measure, recall, precision, sensitivity, specificity, and accuracy, obtained from a multi-class confusion matrix. Result: The proposed deep learning model showed overall classification accuracy of 99.2%, average sensitivity of 99.2%, average specificity of 99.6%, average recall, precision and F- measure of 99.2% of test data. Conclusion: The proposed work introduced a robust approach for the classification of arrhythmias in comparison with the most recent state of the art and will reduce the diagnosis time and error that occurs in the visual investigation of ECG signals.

17 July 2023 in BMC Biomedical Engineering
Verified
Journal Article
Open access
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MHMikael Habtamu
Mikael Habtamu
KTKeneni Tolosa
Keneni Tolosa
KAKidus Abera
Kidus Abera
LDLamesgin Demissie
Lamesgin Demissie
SSSamrawit Samuel
Samrawit Samuel
ADAhmed Ali Dawud
Ahmed Ali Dawud
Background: Epilepsy is a neurological disorder that has a variety of origins. It is caused by hyperexcitability and an imbalance between excitation and inhibition, which results in seizures. The World Health Organization (WHO) and its partners have classified epilepsy as a major public health concern. Over 50 million individuals globally are affected by epilepsy which shows that the patient’s family, social, educational, and vocational activities are severely limited if seizures are not controlled. Patients who suffer from epileptic seizures have emotional, behavioral, and neurological issues. Alerting systems using a wearable sensor are commonly used to detect epileptic seizures. However, most of the devices have no multimodal systems that increase sensitivity and lower the false discovery rate for screening and intervention of epileptic seizures. Therefore, the objective of this project was, to design and develop an efficient, economical, and automatically detecting epileptic seizure device in real-time. Methods: Our design incorporates different sensors to assess the patient’s condition such as an accelerometer, pulsoxymeter and vibration sensor which process body movement, heart rate variability, oxygen denaturation, and jerky movement respectively. The algorithm for real-time detection of epileptic seizures is based on the following: acceleration increases to a higher value of 23.4 m/s2 or decreases to a lower value of 10 m/s2 as energy is absorbed by the body, the heart rate increases by 10 bpm from the normal heart rate, oxygen denaturation is below 90% and vibration should be out of the range of 3 Hz -17 Hz. Then, a pulsoxymeter device was used as a gold standard to compare the heart rate variability and oxygen saturation sensor readings. The accuracy of the accelerometer and vibration sensor was also tested by a fast-moving and vibrating normal person’s hand. Results: The prototype was built and subjected to different tests and iterations. The proposed device was tested for accuracy, cost-effectiveness and ease of use. An acceptable accuracy was achieved for the accelerometer, pulsoxymeter, and vibration sensor measurements, and the prototype was built only with a component cost of less than 40 USD excluding design, manufacturing, and other costs. The design is tested to see if it fits the design criteria; the results of the tests reveal that a large portion of the scientific procedures utilized in this study to identify epileptic seizures is effective. Conclusion: This project is objectively targeted to design a medical device with multimodal systems that enable us to accurately detect epileptic seizures by detecting symptoms commonly associated with an episode of epileptic seizure and notifying a caregiver for immediate assistance. The proposed device has a great impact on reducing epileptic seizer mortality, especially in low-resource settings where both expertise and treatment are scarce.

4 April 2024 in Journal of Electrical Engineering & Technology
Verified
Journal Article
Closed access
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AAAhmed Mohammed Abagaro
Ahmed Mohammed Abagaro
HBHika Barki
Hika Barki
Gelan AyanaGelan Ayana
Gelan Ayana
ADAhmed Ali Dawud
Ahmed Ali Dawud
BTBheema Lingaiah Thamineni
Bheema Lingaiah Thamineni
Se-woon ChoeSe-woon Choe
Se-woon Choe

1 November 2023 in Pediatric Health, Medicine and Therapeutics
Verified
Journal Article
Open access
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BDBiniam Seifu Debelo
Biniam Seifu Debelo
BTBheema Lingaiah Thamineni
Bheema Lingaiah Thamineni
HDHanumesh Kumar Dasari
Hanumesh Kumar Dasari
ADAhmed Ali Dawud
Ahmed Ali Dawud
Introduction: One of the most frequent neurological conditions in newborns is neonatal seizures, which may indicate severe neurological dysfunction. These seizures may have very subtle or very modest clinical indications because patterns like oscillatory (spike) trains begin with relatively low amplitude and gradually increase over time. This becomes very challenging and erroneous if clinical observation is the primary basis for identifying newborn seizures. In this study, a diagnosis system using deep convolutional neural networks is proposed to determine and classify the severity level of neonatal seizures using multichannel neonatal EEG data. Methods: Datasets from publicly accessible online sources were used to compile clinical multichannel EEG datasets. Various preprocessing steps were taken, including the conversion of 2D time series data to equivalent waveform pictures. The proposed models have undergone training, and evaluations of their performance were conducted. Results: The proposed CNN was used to perform binary classification with an accuracy of 92.6%, F1-score of 92.7%, specificity of 92.8%, and precision of 92.6%. To detect newborn seizures, this model is utilized. Using the proposed CNN model, multiclassification was performed with accuracy rates of 88.6%, specificity rates of 92.18%, F1-score rates of 85.61%, and precision rates of 88.9%. The results demonstrated that the suggested strategy can assist medical professionals in making accurate diagnoses close to healthcare institutions. Conclusion: The developed system was capable of detecting neonatal seizures and has the potential to be used as a decision-making tool in resource-limited areas with a scarcity of expert neurologists.

1 January 2024 in Journal of Industrial Textiles
Verified
Journal Article
Open access
Bulcha Belay EtanaBulcha Belay Etana
Bulcha Belay Etana
ADAhmed Ali Dawud
Ahmed Ali Dawud
BMBenny Malengier
Benny Malengier
WSWojciech Sitek
Wojciech Sitek
WGWendimu Fanta Gemechu
Wendimu Fanta Gemechu
LLLieva Van Langenhove
Lieva Van Langenhove
The diagnosis of neuromuscular diseases is complicated by overlapping symptoms from other conditions. Textile-based surface electromyography (sEMG) of skeletal muscles, offer promising potential in diagnosis, treatment, and rehabilitation of various neuromuscular disorders. However, it is important to consider the impact of load and pressure on EMG signals, as this can significantly affect the signal’s accuracy. This study seeks to investigate the influence of load and pressure on EMG signals and establish a processing framework for these signals in the diagnosis of neuromuscular diseases. The sEMG data were collected from healthy subjects using a textile electrode developed from polyester multi-filament conductive hybrid thread (CleverTex). The textrode was embroidered directly on an elastic bandage (Velcro® strap) placed on volunteer’s muscles while different activities were performed with varying loads and pressure. The collected data were pre-processed using standard techniques of the discrete wavelet transform to remove noise and artifacts. The performance of the proposed denoising algorithm was evaluated using the signal-to-noise ratio (SNR), percentage root mean square difference (PRD), and root mean square error (RMSE). Various signal processing approaches (filters) were considered and the results were compared with the proposed EMG noise reduction algorithms. Based on the experimental results, the fourth level of decomposition for the sym5 wavelets with the Rigrsure threshold method achieved the highest signal-to-noise ratio (SNR) values of 16.69 and 21.91, for soft and hard thresholding functions, respectively. The SNR values of 22.11, 21.54, and 2.78 at three different pressure levels 5 mmHg, 10 mmHg, and 20 mmHg, respectively, indicate the superior performance of wavelet multiresolution filter in de-noising applications. The results of this study suggest that our methodology is effective, precise, and reliable for analysing sEMG data and provide insights into both physiological and pathological neuromuscular conditions.

12 December 2023 in BMC Digital Health
Verified
Journal Article
Open access
PDF file
AAAbdulmalik Aliyi
Abdulmalik Aliyi
BMBruk Mesfin
Bruk Mesfin
FHFuad Hassen
Fuad Hassen
GDGemechu Dejene
Gemechu Dejene
HWHawi Wondimu
Hawi Wondimu
ADAhmed Ali Dawud
Ahmed Ali Dawud
Pregnancy is a process of developing a fetus in a woman’s womb leading to anatomical and physiological changes. Currently, numerous health facilities offering antenatal services are yet to adopt health informatics. This led to several challenges, including unskilled, early and poor quality antenatal and delivery care, case traffic because many patients are admitted per day, and shy medical professional doctors, nurses, midwives and nursing aids. The main idea of this project was to design and develop a new system for managing maternal health in antenatal care. This web-based antenatal care management platform is designed using XAMPP, PHP, HTML and CSS. It involves designing the stoner interface and identifying the inputs, outputs, and processes of the designed system. The configuration involves the use of case diagrams, sequence diagrams and class diagram tools to achieve the physical consummation of the antenatal care management platform and positive living information system. The purpose of this work was to create a web-based platform for managing antenatal care. The designed project was tested by using parameters such as WHO guidelines, security, user-friendliness and data storage. Three testing criteria, namely, unit testing, integration testing and system testing, were used to check the efficiency and effectiveness of the antenatal care management platform (ANCMP). The platform that was created met almost all of the criteria that were set out in the design. This project is objectively targeted to develop a web-based antenatal care management system to overcome the complications that occur during and following gestation. It controls the overall conditioning of antenatal care, which includes the enrollment of expectant mothers, shadowing of the listed day and reminding them via email and effectively recording and saving all medical information about the mothers.