Rohan Kalahasty

Mr. Rohan Kalahasty


Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

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

Representative Publications

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31 July 2025 in Sensors
Verified
Journal Article
Open access
PDF file
RKRohan Kalahasty
Rohan Kalahasty
GYGayathri Yerrapragada
Gayathri Yerrapragada
JLJieun Lee
Jieun Lee
KGKeerthy Gopalakrishnan Gopalakrishnan
Keerthy Gopalakrishnan Gopalakrishnan
AKAvneet Kaur
Avneet Kaur
Shivaram P. ArunachalamShivaram P. Arunachalam
Shivaram P. Arunachalam
Accurate diagnosis of gastrointestinal (GI) diseases typically requires invasive procedures or imaging studies that pose the risk of various post-procedural complications or involve radiation exposure. Bowel sounds (BSs), though typically described during a GI-focused physical exam, are highly inaccurate and variable, with low clinical value in diagnosis. Interpretation of the acoustic characteristics of BSs, i.e., using a phonoenterogram (PEG), may aid in diagnosing various GI conditions non-invasively. Use of artificial intelligence (AI) and improvements in computational analysis can enhance the use of PEGs in different GI diseases and lead to a non-invasive, cost-effective diagnostic modality that has not been explored before. The purpose of this work was to develop an automated AI model, You Only Listen Once (YOLO), to detect prominent bowel sounds that can enable real-time analysis for future GI disease detection and diagnosis. A total of 110 2-minute PEGs sampled at 44.1 kHz were recorded using the Eko DUO® stethoscope from eight healthy volunteers at two locations, namely, left upper quadrant (LUQ) and right lower quadrant (RLQ) after IRB approval. The datasets were annotated by trained physicians, categorizing BSs as prominent or obscure using version 1.7 of Label Studio Software®. Each BS recording was split up into 375 ms segments with 200 ms overlap for real-time BS detection. Each segment was binned based on whether it contained a prominent BS, resulting in a dataset of 36,149 non-prominent segments and 6435 prominent segments. Our dataset was divided into training, validation, and test sets (60/20/20% split). A 1D-CNN augmented transformer was trained to classify these segments via the input of Mel-frequency cepstral coefficients. The developed AI model achieved area under the receiver operating curve (ROC) of 0.92, accuracy of 86.6%, precision of 86.85%, and recall of 86.08%. This shows that the 1D-CNN augmented transformer with Mel-frequency cepstral coefficients achieved creditable performance metrics, signifying the YOLO model’s capability to classify prominent bowel sounds that can be further analyzed for various GI diseases. This proof-of-concept study in healthy volunteers demonstrates that automated BS detection can pave the way for developing more intuitive and efficient AI-PEG devices that can be trained and utilized to diagnose various GI conditions. To ensure the robustness and generalizability of these findings, further investigations encompassing a broader cohort, inclusive of both healthy and disease states are needed.

3 November 2023 in Telehealth and Medicine Today
Verified
Journal Article
Open access
PDF file
SMSai Mattapalli
Sai Mattapalli
RKRohan Kalahasty
Rohan Kalahasty
In the past five years, artificial intelligence has revolutionized healthcare by enabling earlier detection, diagnosis, and treatment of diseases. A recent breakthrough involves using eye-tracking technology to identify ocular biomarkers, aiding in the early detection of conditions like Alzheimer's and neurodegenerative diseases. Eye movement tests, previously costly and complex, have become accessible through smartphone and laptop cameras. These tests help detect a range of conditions, from degenerative disorders to brain injuries, improving patient outcomes and facilitating telehealth. This technology not only benefits patients but also advances the study of brain health. By delving into neurology and treatment efficacy, it may provide insights into the causes of neurodegenerative diseases. The future potential of gaze tracking is promising, with non-invasive, cost-effective systems offering hope for earlier diagnosis and treatment of neurodegenerative diseases, addressing a significant gap in healthcare. The eyes are not just windows to the soul but also a gateway to the brain's health.