Optimisation of processing parameters for wear properties of polylactic acid biopolymer parts in FDM process Nagarjuna Maguluri, Gamini Suresh, Sitaramanjaneya Reddy Guntur Advances in Materials and Processing Technologies, 2025 Currently, additive manufacturing (AM) technology has been expanding in advanced engineering and biomedical applications. The fused deposition modelling (FDMTM) method, also known as fused filament fabrication (FFF), is one of the most extensively used AM methods owing to its simple operation, reliability and potential to manufacture intricate components. The mechanical and wear properties of these components depend mainly on the proper selection of processing parameters. This study aims to determine the optimum parameters for low wear rate, less frictional force and good surface roughness. To achieve this aim, a hybrid approach based on user preference ranking is adopted to evaluate the effect of the four processing parameters including nozzle temperature, fill density, layer thickness and printing speed, on the wear behaviour, frictional force and surface roughness. The study procedure includes Taguchi L27 experiment design, finding the weight ratios, calculating utility index (UI) values and optimising UI values using Taguchi methodology for maximum utilisation. The results found that at 220°C of nozzle temperature, 100% fill density, 0.24 mm layer thickness and a printing speed of 60 mm/s are optimal parameters for the maximum utility index value. From the results, the percentage of contribution of fill density, nozzle temperature, layer thickness and printing speed were observed as 69.071%, 15.974%, 5.431% and 2.306%, respectively.
Efficient Multi-Modal MR-PET medical Image Integration using Wavelet Level Depended Fusion Rules Shaik Shehanaz, Sitaramanjaneya Reddy Guntur 2024 15th International Conference on Computing Communication and Networking Technologies Icccnt 2024, 2024 Multi-modal medical image fusion (MMF) is a technique that combines information from different modalities for better diagnosis and treatment planning. MRI displays anatomical information in grayscale with high spatial resolution, whereas PET displays the metabolism of an organ or specific tissue in color with low spatial resolution. This study aims to develop novel Multi-modal medical image fusion including optimum max fusion rule with improved Laplacian of Gaussian in a multi-level approach. The objective of this work is to investigate the optimum max fusion rule for enhancing the structural and edge quality using an improved Laplacian of Gaussian algorithm. The MRI-PET fusion image framework developed in this study uses multi-level wavelet decomposition with feature-dependent multi-fusion rules. DWT high-low frequency coefficients are used to generate detailed and approximate components. The weighted average and max fusion rule were used to obtain detailed and approximate components. The weights are calculated using improved Laplacian and Gaussian filter techniques based on normalized energy. Finally, detailed and approximate components were integrated for the formation of fused images. Subjective and objective evaluations were performed on three datasets of MRI-PET images. The present work introduces a multi-fusion rule-based framework for MRI and PET image fusion using DWT and an improved Laplacian of Gaussian filter. The experimental results illustrate that the proposed approach outperforms conventional methods in terms of enhancing structural (SSIM) and Edge-based similarity (Q(ABF)) features. The results demonstrated that the present MMF approach has greater structural and edge quality than other existing techniques. It can also be used in any application that requires image fusion at the preprocessing stage, such as MRI-PET pattern recognition.
Removal of Interference from Electromyogram based on Empirical Mode Decomposition and Correlation Coefficient Thresholding M. Karuna, Sitaramanjaneya Reddy Guntur Current Signal Transduction Therapy, 2024 Introduction:: Electromyography (EMG) signals are contaminated by various noise components. These noises directly degrade the EMG processing performance, thereby affecting the classification accuracy of the EMG signals for implementing various hand movements of the prosthetic arm from the amputee’s residual muscle. Methods:: This study mainly aims to denoise the EMG signals using the empirical mode decomposition (EMD) and correlation coefficient thresholding (CCT) methods. The noisy EMG signal is obtained from NinaPro Database 2. Then, EMD is used to decompose it into intrinsic mode functions. Each hand movement noise is identified within specific modes and removed separately using correlation coefficient–dependent thresholding and wavelet denoising. The performance metrics signal-to-noise ratio (SNR) and root mean square error (RMSE) were used to evaluate the noise removal performance from the EMG signals of five intact subjects. The proposed method outperforms the wavelet denoising method in terms of noise interference removal. In this method, the SNR is obtained in the 17-22 dB range with a very low RMSE. Results:: The experimental results illustrate that the proposed method removes noise from six repetitions of six movements performed by five subjects. This study explores the special characteristics of EMD and demonstrates the possibility of using the EMD-based CCT filter for denoising EMG signals. Conclusion:: The proposed filter is more efficient than wavelet denoising in removing noise interference. It can also be used in any application that requires EMG signal filtering at the preprocessing stage, such as EMG pattern recognition.
An efficient stacked bidirectional GRU-LSTM network for intracranial hemorrhage detection Lakshmi Prasanna Kothala, Sitaramanjaneya Reddy Guntur International Journal of Imaging Systems and Technology, 2024 Intracranial hemorrhage (ICH) is a dangerous condition that needs prompt diagnosis and treatment. Computed tomography (CT) images are employed in examination of individuals with ICH, which produces better results and cost‐effective than MRI. The existing convolutional neural network (CNN) models are unable to consider inter‐pixel dependency, which leads to false predictions while considering the input CT Images. In this study, we implemented an efficient model of a stack of bidirectional gated recurrent unit (Bi‐GRU) with a bidirectional long short‐term memory (Bi‐LSTM) based CNN to improve detection accuracy in the case of 2D slices. The proposed model holds slice‐wise information by accessing the properties of both Bi‐LSTM and Bi‐GRU modules in a single unit. As a result, the model attained a testing and training accuracy of 96.2% and 93.4%, respectively, with a test loss score of 0.126. In addition, the proposed model could outperform the state‐of‐the‐art CNN in identifying brain hemorrhages.
Classification of Artifacts in Multimodal Fused Images using Transfer Learning with Convolutional Neural Networks Shehanaz Shaik, Sitaramanjaneya Reddy Guntur Current Medical Imaging, 2024 Introduction: Multimodal medical image fusion techniques play an important role in clinical diagnosis and treatment planning. The process of combining multimodal images involves several challenges depending on the type of modality, transformation techniques, and mapping of structural and metabolic information. Methods: Artifacts can form during data acquisition, such as minor movement of patients, or data pre-processing, registration, and normalization. Unlike single-modality images, the detection of an artifact is a more challenging task in complementary fused multimodal images. Many medical image fusion techniques have been developed by various researchers, but not many have tested the robustness of their fusion approaches. The main objective of this study is to identify and classify the noise and artifacts present in the fused MRI-SPECT brain images using transfer learning by fine-tuned CNN networks. Deep neural network-based techniques are capable of detecting minor amounts of noise in images. In this study, three pre-trained convolutional neural network-based models (ResNet50, DenseNet 169, and InceptionV3) were used to detect artifacts and various noises including Gaussian, Speckle, Random, and mixed noises present in fused MRI -SPECT brain image datasets using transfer learning. Results: The five-fold stratified cross-validation (SCV) is used to evaluate the performance of networks. The obtained performance results for the pretrained DenseNet169 model for various folds were greater as compared with the rest of the models; the former had an average accuracy of five-fold of 93.8±5.8%, 98%±3.9%, 97.8±1.64%, and 93.8±5.8%, whereas InceptionNetV3 had a value of 90.6±9.8%, 98.8±1.6%, 91.4±9.74%, and 90.6±9.8%, and ResNet50 had a value of 75.8±21%.84.8±7.6%, 73.8±22%, and 75.8±21% for Gaussian, speckle, random and mixed noise, respectively. Conclusion: Based on the performance results obtained, the pre-trained DenseNet 169 model provides the highest accuracy among the other four used models.
Blockchain technology integrity in health informatics using hyper ledger platform Innovations in Healthcare Informatics from Interoperability to Data Analysis, 2024
Semantic web of things for healthcare interoperability using IoMT technologies Semantic Technologies for Intelligent Industry 4 0 Applications, 2023
Upper limb movements identification through EMG signal using artificial neural network International Journal of Engineering and Advanced Technology, 2019
TL-LFF Net: transfer learning based lighter, faster, and frozen network for the detection of multi-scale mixed intracranial hemorrhages through genetic optimization algorithm LP Kothala, SR Guntur International Journal of Machine Learning and Cybernetics 16 (10), 7059-7085 , 2025 2025 Citations: 10
GEL-TTA Net: a Global ensemble learning network for the localization of small-scale and mixed intracranial hemorrhages through test time augmentations LP Kothala, SR Guntur Multimedia Tools and Applications 84 (14), 13005-13036 , 2025 2025 Citations: 7
Classification of hand movements based on EMD-CCT feature extraction method through EMG using machine learning M Karuna, SR Guntur Multimedia Tools and Applications 84 (10), 7987-8013 , 2025 2025 Citations: 6
Optimisation of processing parameters for wear properties of polylactic acid biopolymer parts in FDM process N Maguluri, G Suresh, S Reddy Guntur Advances in Materials and Processing Technologies 11 (1), 92-108 , 2025 2025 Citations: 3
Efficient Multi-Modal MR-PET medical Image Integration using Wavelet Level Depended Fusion Rules S Shehanaz, SR Guntur 2024 15th International Conference on Computing Communication and Networking … , 2024 2024 Citations: 1
A comparative analysis of preprocessing techniques on ultrasound images of CCA P Jonnala, SR Guntur International Journal of System Assurance Engineering and Management 15 (6 … , 2024 2024
Removal of Interference from Electromyogram based on Empirical Mode Decomposition and Correlation Coefficient Thresholding M Karuna, SR Guntur Current Signal Transduction Therapy 19 (1), 48-56 , 2024 2024 Citations: 1
Classification of artifacts in multi model fused image using transfer learning convolution neural network Shehanaz Shaik,Sitaramanjaneya Reddy Current Medical Imaging , 2024 2024 Citations: 1
Improved U-Net Framework for Accurate Lumen Segmentation in Cross-Sectional Ultrasound Images of the Carotid Artery P Jonnala, SR Guntur 2023 First International Conference on Advances in Electrical, Electronics … , 2023 2023 Citations: 1
An improved mosaic method for the localization of intracranial hemorrhages through bounding box LP Kothala, SR Guntur 2023 IEEE 5th International Conference on Cybernetics, Cognition and Machine … , 2023 2023 Citations: 6
An efficient stacked bidirectional GRU‐LSTM network for intracranial hemorrhage detection LP Kothala, SR Guntur International Journal of Imaging Systems and Technology , 2023 2023 Citations: 7
Image de-noising of Ultrasound Carotid artery images using various filters P Jonnala, GS Reddy 2023 4th International conference for emerging technology (INCET), 1-4 , 2023 2023 Citations: 5
Improving the Hand Movement Classification Accuracy through EMG based on Histogram Feature Enhancement from Time Domain Representation M Karuna, SR Guntur 2023 Second International Conference on Electrical, Electronics, Information … , 2023 2023 Citations: 1
Localization of mixed intracranial hemorrhages by using a ghost convolution-based YOLO network LP Kothala, P Jonnala, SR Guntur Biomedical Signal Processing and Control 80, 104378 , 2023 2023 Citations: 33
Semantic Web of Things for Healthcare Interoperability using IoMT Technologies RR Gorrepati, P Jonnala, SR Guntur, DH Kim River Publishers , 2023 2023 Citations: 5
Segmentation of Intracranial Hemorrhage through an EfficientNetB7-based UNET model LP Kothala, SR Guntur 2022 International Conference on Smart Generation Computing, Communication … , 2022 2022 Citations: 3
Multi-Class Classification of Intracranial Hemorrhages in a 3-Channel CT image by using a Transfer Learning based DenseNet121 model LP Kothala, SR Guntur 2022 International Conference on Smart Generation Computing, Communication … , 2022 2022 Citations: 7
A cost-effective reusable tissue mimicking phantom for high intensity focused ultrasonic liver surgery SR Guntur, SC Kim, MJ Choi Bioengineering 9 (12), 786 , 2022 2022 Citations: 7
An efficient False Negative Reduction System for the Identification of Intracranial Hemorrhage LP Kothala, SR Guntur 2022 International Conference on Futuristic Technologies (INCOFT), 1-6 , 2022 2022 Citations: 1
Effect of printing parameters on the hardness of 3D printed poly-lactic acid parts using DOE approach N Maguluri, G Suresh, SR Guntur IOP Conference Series: Materials Science and Engineering 1248 (1), 012004 , 2022 2022 Citations: 27
MOST CITED SCHOLAR PUBLICATIONS
A tissue mimicking polyacrylamide hydrogel phantom for visualizing thermal lesions generated by high intensity focused ultrasound MJ Choi, SR Guntur, KIL Lee, DG Paeng, A Coleman Ultrasound in medicine & biology 39 (3), 439-448 , 2013 2013 Citations: 147
Temperature-dependent thermal properties of ex vivo liver undergoing thermal ablation SR Guntur, KI Lee, DG Paeng, AJ Coleman, MJ Choi Ultrasound in medicine & biology 39 (10), 1771-1784 , 2013 2013 Citations: 126
In Vitro Studies of the Antimicrobial and Free-Radical Scavenging Potentials of Silver Nanoparticles Biosynthesized From the Extract of Desmostachya bipinnata VRD Sitaramanjaneya Reddy Guntur, NS Sampath Kumar, Manasa M Hegde Anal Chem Insights. 13, 1-13 , 2018 2018 Citations: 85
Optimum weighted multimodal medical image fusion using particle swarm optimization S Shehanaz, E Daniel, SR Guntur, S Satrasupalli Optik 231, 166413 , 2021 2021 Citations: 69
Robotics in healthcare: an internet of medical robotic things (IoMRT) perspective SR Guntur, RR Gorrepati, VR Dirisala Machine learning in bio-signal analysis and diagnostic imaging, 293-318 , 2019 2019 Citations: 62
Changes in ultrasonic properties of liver tissue in vitro during heating-cooling cycle concomitant with thermal coagulation MJ Choi, SR Guntur, JM Lee, DG Paeng, KIL Lee, A Coleman Ultrasound in medicine & biology 37 (12), 2000-2012 , 2011 2011 Citations: 61
An improved tissue-mimicking polyacrylamide hydrogel phantom for visualizing thermal lesions with high-intensity focused ultrasound SR Guntur, MJ Choi Ultrasound in Medicine & Biology 40 (11), 2680-2691 , 2014 2014 Citations: 47
Internet of medical things SR Guntur, RR Gorrepati, VR Dirisala Medical big data and internet of medical things 4 (6), 271-297 , 2018 2018 Citations: 39
Influence of temperature-dependent thermal parameters on temperature elevation of tissue exposed to high-intensity focused ultrasound: numerical simulation SR Guntur, MJ Choi Ultrasound in medicine & biology 41 (3), 806-813 , 2015 2015 Citations: 37
Reusable ultrasonic tissue mimicking hydrogels containing nonionic surface-active agents for visualizing thermal lesions SK Park, SRAR Guntur, KI Lee, DG Paeng, MJ Choi IEEE transactions on biomedical engineering 57 (1), 194-202 , 2009 2009 Citations: 34
Localization of mixed intracranial hemorrhages by using a ghost convolution-based YOLO network LP Kothala, P Jonnala, SR Guntur Biomedical Signal Processing and Control 80, 104378 , 2023 2023 Citations: 33
Effect of printing parameters on the hardness of 3D printed poly-lactic acid parts using DOE approach N Maguluri, G Suresh, SR Guntur IOP Conference Series: Materials Science and Engineering 1248 (1), 012004 , 2022 2022 Citations: 27
Temperature dependence of tissue thermal parameters should be considered in the thermal lesion prediction in high-intensity focused ultrasound surgery SR Guntur, MJ Choi Ultrasound in Medicine & Biology 46 (4), 1001-1014 , 2020 2020 Citations: 22
Single Image Haze Removal Based on transmission map estimation using Encoder-Decoder based deep learning architecture S Satrasupalli, E Daniel, SR Guntur Optik 248, 168197 , 2021 2021 Citations: 15
DroneMap: an IoT network security in internet of drones RR Gorrepati, SR Guntur Development and Future of Internet of Drones (IoD): Insights, Trends and … , 2021 2021 Citations: 11
TL-LFF Net: transfer learning based lighter, faster, and frozen network for the detection of multi-scale mixed intracranial hemorrhages through genetic optimization algorithm LP Kothala, SR Guntur International Journal of Machine Learning and Cybernetics 16 (10), 7059-7085 , 2025 2025 Citations: 10
End to end system for hazy image classification and reconstruction based on mean channel prior using deep learning network S Satrasupalli, E Daniel, SR Guntur, S Shehanaz IET Image Processing 14 (17), 4736-4743 , 2020 2020 Citations: 10
Internet of Medical things: Remote healthcare and health monitoring perspective SR Guntur, RR Gorrepati, VR Dirisala Medical big data and internet of medical things, 271-297 , 2018 2018 Citations: 9
GEL-TTA Net: a Global ensemble learning network for the localization of small-scale and mixed intracranial hemorrhages through test time augmentations LP Kothala, SR Guntur Multimedia Tools and Applications 84 (14), 13005-13036 , 2025 2025 Citations: 7
An efficient stacked bidirectional GRU‐LSTM network for intracranial hemorrhage detection LP Kothala, SR Guntur International Journal of Imaging Systems and Technology , 2023 2023 Citations: 7
Publications
• Lakshmi Prasanna Kothala, Prathiba Jonnala, Sitaramanjaneya Reddy Guntur, Localization of mixed intracranial hemorrhages by using a ghost convolution-based YOLO network. Biomedical Signal Processing and Control 2023:80; 104378.
• Sitaramanjaneya Reddy Guntur, Seong-Chan Kim, Min Joo Choi. A Cost-Effective Reusable Tissue Mimicking Phantom for High Intensity Focused Ultrasonic Liver Surgery. Bioengineering 2022:9(12);786.
• Sivaji Satraupalli, Ebenezer Daniel, Sitaramanjaneya Reddy Guntur. Single Image Haze Removal Based on transmission map estimation using Encoder-Decoder based deep learning architecture. Optik 2021; 248, 168197.
• Sivaji Satraupalli, Ebenezer Daniel, Sitaramanjaneya Reddy Guntur, Shaik Shehanaz. End to end system for hazy image classification and reconstruction based on mean channel prior using deep learning network. IET Image Processing 2021:14(17); 4736-4743.
• Shaik Shehanaz, Ebenezer Daniel, Sitaramanjaneya Reddy Guntur, Sivaji Satraupalli. Optimum weighted multimodal medical image fusion using particle swarm optimization. Optik 2021: 231; 413.
• Sunil Tej Boppudi, Suliman Belal, Sitaramanjaneya Reddy Guntur. Preparation and characterization of a novel sprayable hydrogel for skin preparation to record ECG and other biopotentials. Biomedical Engineering .