Browsing by Author "Sahrim M."
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Publication Aortic annulus sizing using watershed transform and morphological approach for CT images(American Institute of Physics Inc., 2018) ;Mohammad N. ;Omar Z. ;Sahrim M. ;Faculty of Engineering and Built Environment ;Universiti Teknologi Malaysia (UTM)Universiti Sains Islam Malaysia (USIM)Aortic valve disease occurs due to calcification deposits on the area of leaflets within the human heart. It is progressive over time where it can affect the mechanism of the heart valve. To avoid the risk of surgery for vulnerable patients especially senior citizens, a new method has been introduced: Transcatheter Aortic Valve Implantation (TAVI), which places a synthetic catheter within the patient's valve. This entails a procedure of aortic annulus sizing, which requires manual measurement of the scanned images acquired from Computed Tomographic (CT) by experts. The step requires intensive efforts, though human error may still eventually lead to false measurement. In this research, image processing techniques are implemented onto cardiac CT images to achieve an automated and accurate measurement of the heart annulus. The image is first put through pre-processing for noise filtration and image enhancement. Then, a marker image is computed using the combination of opening and closing operations where the foreground image is marked as a feature while the background image is set to zero. Marker image is used to control the watershed transformation and also to prevent oversegmentation. This transformation has the advantage of fast computational and oversegmentation problems, which usually appear with the watershed transform can be solved with the introduction of marker image. Finally, the measurement of aortic annulus from the image data is obtained through morphological operations. Results affirm the approach's ability to achieve accurate annulus measurements compared to conventional techniques. � 2018 Author(s). - Some of the metrics are blocked by yourconsent settings
Publication Automated feature description of follicle size in assisted reproductive treatment(Penerbit UTHM, 2018) ;Sahrim M. ;Rahman U.S.A. ;Wan Zakiah Wan Ismail ;Ismail I. ;Jamaludin J. ;Balakrishnan S.R. ;Faculty of Engineering and Built EnvironmentUniversiti Sains Islam Malaysia (USIM)In assisted reproductive treatment, monitoring of follicular size using serial ultrasound is essential to access ovarian response. Traditional method requires doctors to measure the follicle size manually which will lead to inaccurate findings. As for more consistent and reliable parameter of follicular growth, an automated feature description may offer better accuracy in estimating to the response. In this study, by using two-dimensional ultrasound to acquire data from the ovaries, the ultrasound result will indicate the feature description automatically without manual calculation. This automated feature description is developed based on image processing technique using canny edge-detection method in MATLAB. It provides the analysis of the features based on area, perimeter, compactness, major and minor axis and centroid dataset to identify the follicle size. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication Automatic feature description of endometrioma in ultrasonic images of the ovary(Penerbit UTHM, 2018) ;Sahrim M. ;Aziz A.N.A. ;Wan Zakiah Wan Ismail ;Ismail I. ;Jamaludin J. ;Balakrishnan S.R. ;Faculty of Engineering and Built EnvironmentUniversiti Sains Islam Malaysia (USIM)Endometriosis cyst or endometrium is commonly found in women with subfertility. Traditionally, medical technologies fail to detect the disease automatically and it is fully dependent on the doctors to determine the peritoneal disease where it may lead to inaccurate findings. A method of assessment may give more accurate detection without the need for surgical procedure, especially in monitoring disease recurrence. This will avoid surgical risk and will not delay the management. In this study, the feature description is developed using pattern recognition, involving image processing techniques; the ultrasonic images is used as input in which the region of interest of images, image segmentation, feature extraction are studied. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication Design and fabrication of polydimethylsiloxane based low cost microfluidic for ultra-fast diagnostic applications(Penerbit UTHM, 2018) ;Balakrishnan S.R. ;Hashim U. ;Sahrim M. ;Ismail I. ;Jamaludin J. ;Ismail W.Z.W. ;Perumal V. ;Haarindraprasad R. ;Mahalingam S. ;Faculty of Engineering and Built Environment ;Universiti Sains Islam Malaysia (USIM) ;Universiti Malaysia Perlis (UniMAP) ;Universiti Teknologi PETRONAS (UTP) ;AIMST UniversityUniversiti Tenaga Nasional (UNITEN)Diagnostic tools such as Point-of-Care (POC) analysis usually requires an on-site testing and measurements. Hence, to ease the fluid sample handling, microfluidics technology has been opted frequently to be incorporated with lab-on-chip (LOC). Therefore, an easy and conventional method of design and fabrication of the microfluidic device implemented. In this study, the device is fabricated with Polydimethylsiloxane (PDMS) and SU-8 using soft lithography technique. Herein, we focus on fluid transportation which is applied in clinical diagnostics and the transfer rate to the desired position as well as the fluid leakage during the transportation. Hence, the microfluidic sample transport channeling provides a practical solution for POC technological advances to study the biological systems that yield a better result in quantitative measurements and providing researchers new tools for life science research. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication The level of students’ engagement in Arabic within public universities(Penerbit Universiti Sains Malaysia, 2020) ;Asbulah L.H. ;Lubis M.A. ;Aladdin A.Sahrim M.The aim of this study is to measure the level of engagement among the Arabic students’ of public universities. As such, two engagement dimensions were analysed: (a) inside the classroom and (b) outside the classroom. In this study, a total of 344 Arabic students were employed as respondents due to the nature of the study, which is cross-sectional involving final year Arabic students from eight public universities. In order to achieve the aim of this study, a simple random sampling method was used in line with the sampling frame. IBM SPSS version 19.0 was used to analyse the data of this study descriptively, such as the mean, standard deviation, and percentage respectively. The findings showed that the engagement of graduates to study the Arabic in the classroom is at moderate level, and followed by lower level outside the classroom. Overall, it was discovered that the engagement of Arabic students at the Malaysian public university level is still moderate and as such the authorities need to take initiative to improve this situation. Thus, the students have to maximise their engagement inside the classroom and outside the classroom at the university. This is assumed to indirectly contribute to higher achievement in the Arabic as well as to produce competent Arabic graduates. © Penerbit Universiti Sains Malaysia, 2020. - Some of the metrics are blocked by yourconsent settings
Publication Optical tomography system using Charge-Coupled Device for transparent object detection(Penerbit UTHM, 2018) ;Jamaludin J. ;Rahim R.A. ;Rahiman M.H.F. ;Wahab Y.A. ;Rohani J.M. ;Sahrim M. ;Wan Zakiah Wan Ismail ;Irneza Ismail ;Balakrishnan S.R. ;Faculty of Engineering and Built Environment ;Universiti Sains Islam Malaysia (USIM) ;Universiti Tun Hussein Onn Malaysia (UTHM) ;Universiti Teknologi Malaysia (UTM) ;Universiti Malaysia Perlis (UniMAP) ;Universiti Malaysia Pahang (UMP)Jemmy Mohd Rohani EnterpriseThis research presents an application of Charge-Coupled Device (CCD) linear sensor and laser diode in an optical tomography system. Optical tomography is a non-invasive and non-intrusive method of capturing a cross-sectional image of multiphase flow. The measurements are based on the final light intensity received by the sensor and this approach is limited to detect solid objects only. The aim of this research is to analyse and demonstrate the capability of laser with a CCD in an optical tomography system for detecting objects with different clarity in crystal clear water. Experiments for detecting transparent objects were conducted. The object's diameter and image reconstruction can also be observed. As a conclusion, this research has successfully developed a non-intrusive and non-invasive optical tomography system that can detect objects in crystal clear water. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication Principles and characteristics of random lasers and their applications in medical, bioimaging and biosensing(American Institute of Physics Inc., 2020) ;Kamil N.A.I.M. ;Ismail W.Z.W. ;Ismail I. ;Balakrishnan S.R. ;Sahrim M. ;Jamaludin J. ;Marinah Othman ;Suhaimi S. ;Faculty of Science and Technology ;Faculty of Engineering and Built EnvironmentUniversiti Sains Islam Malaysia (USIM)A random laser is an optical device that depends on multiple light scattering and gain to provide the feedback mechanism and light amplification respectively. A random laser is different with a regular laser where the regular laser needs a cavity for the feedback mechanism. Multiple light scattering can be considered detrimental in the regular laser but in the random laser, multiple light scattering can increase the path length of light in the active medium. This article studies the operation principles and characteristics of random lasers including the history and applications of the lasers. The theories of light scattering and light amplification are properly explained, followed by a discussion on characteristics of random lasers in terms of random laser emission, emission linewidth and coherence. Furthermore, the unique characteristics of random lasers can contribute to many applications leading to promising element for the future medical and biosensing development. - Some of the metrics are blocked by yourconsent settings
Publication A study on Malaysia atmospheric effect on radio over free space optic through radio frequency signal and light propagation in fiber for future communication development(American Institute of Physics Inc., 2020) ;Zainurin S.N. ;Ismail I. ;Saulaiman U.S. ;Ismail W.Z.W. ;Mustafa F.H. ;Sahrim M. ;Jamaludin J. ;Balakrishnan S.R. ;Faculty of Engineering and Built Environment ;Universiti Sains Islam Malaysia (USIM)Universiti Sains Malaysia (USM)This article presents the effects of haze attenuation on Radio over Free Space Optic (RoFSO) transmission system in KLIA Sepang, one of the towns in Malaysia. The haze condition which affects the FSO link transmissions was considered on October 2015 and on October 2017 at KLIA Sepang referring to the reading record of Air Pollution Index (API). In this paper, OptiSystem simulation software is used as a preliminary study before configuring the real RoFSO setup. We model the RoFSO by converting the radio frequency (RF) signal into light where the light source intensity is modulated with the RF signal. RF signal travels through free space while light propagates through fiber optic channel. Single-FSO and four- FSO channels are compared and analyzed in terms of bit-error-rate (BER), received optical power and eye diagram pattern. The results show that the performance of RoFSO with four-FSO channel system in comparison with single-channel has better receiver sensitivity and clear eye diagram. For future work, deploying multiple RoFSO system can fulfil the increasing demand for optimizing the communication bandwidth. - Some of the metrics are blocked by yourconsent settings
Publication Tahap motivasi holistik, intrinsik dan ekstrinsik terhadap pembelajaran kosa kata bahasa arab dalam kalangan graduan universiti awam(Penerbit Universiti Sains Malaysia, 2018) ;Asbulah L.H. ;Lubis M.A. ;Aladdin A. ;Sahrim M. ;Faculty of Engineering and Built Environment ;Universiti Kebangsaan Malaysia (UKM)Universiti Sains Islam Malaysia (USIM)The purpose of this study is to evaluate the students’ motivation levels towards learning Arabic language vocabulary among Arabic language graduate students in public universities. The motivational domains that had been analysed in this study were holistic, intrinsic and extrinsic. A total of 344 Arabic language graduate students had been used as respondents in this study. This study is a cross-sectional study involving final year Arabic language students from eight public universities. Futhermore, simple random sampling was used as a sampling method based on the ability of the researcher to obtain the sampling frame. The data was analysed using IBM SPSS version 19.0 descriptively such as mean, standard deviation and percentage. The findings showed that the motivation Arabic language graduate students to learn the Arabic vocabulary for holistic motivation was at a high level followed by extrinsic and intrinsic domains at a moderate level. Therefore, this study revealed the differences in findings that religious or holistic factor was a main factor of Muslim students to continue studying Arabic language vocabulary. However, research in western findings showed that rewards, recognition and external returns were the factors to learn the vocabulary of language. - Some of the metrics are blocked by yourconsent settings
Publication Wavelet-based aortic annulus sizing of echocardiography images(Institute of Electrical and Electronics Engineers Inc., 2017) ;Mohammad N. ;Omar Z. ;Sheikh U.U. ;Rahman A.A.-H.A. ;Sahrim M. ;Faculty of Engineering and Built Environment ;Universiti Teknologi Malaysia (UTM)Universiti Sains Islam Malaysia (USIM)Aortic stenosis (AS) is a condition where the calcification deposit within the heart leaflets narrows the valve and restricts the blood from flowing through it. This disease is progressive over time where it may affect the mechanism of the heart valve. To alleviate this condition without resorting to surgery, which runs the risk of mortality, a new method of treatment has been introduced: Transcatheter Aortic Valve Implantation (TAVI), in which imagery acquired from real-Time echocardiogram (Echo) are needed to determine the exact size of aortic annulus. However, Echo data often suffers from speckle noise and low pixel resolution, which may result in incorrect sizing of the annulus. Our study therefore aims to perform an automated detection and measurement of aortic annulus size from Echo imagery. Two stages of algorithm are presented-image denoising and object detection. For the removal of speckle noise, Wavelet thresholding technique is applied. It consists of three sequential steps; applying linear discrete wavelet transform, thresholding wavelet coefficients and performing linear inverse wavelet transform. For the next stage of analysis, several morphological operations are used to perform object detection as well as valve sizing. The results showed that the automated system is able to produce more accurate sizing based on ground truth. � 2017 IEEE.