Zbigniew Nawrat

Prof. Zbigniew Nawrat

orcid

Research Focus & Metrics

Academic Career Length

38Years (1989-Present)

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

Representative Publications

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3 August 2023 in Diagnostics
Verified
Journal Article
Open access
PDF file
Jakub KufelJakub Kufel
Jakub Kufel
KBKatarzyna Bargieł-Łączek
Katarzyna Bargieł-Łączek
SKSzymon Kocot
Szymon Kocot
MKMaciej Koźlik
Maciej Koźlik
WBWiktoria Bartnikowska
Wiktoria Bartnikowska
KGKatarzyna Gruszczyńska
Katarzyna Gruszczyńska
Machine learning (ML), artificial neural networks (ANNs), and deep learning (DL) are all topics that fall under the heading of artificial intelligence (AI) and have gained popularity in recent years. ML involves the application of algorithms to automate decision-making processes using models that have not been manually programmed but have been trained on data. ANNs that are a part of ML aim to simulate the structure and function of the human brain. DL, on the other hand, uses multiple layers of interconnected neurons. This enables the processing and analysis of large and complex databases. In medicine, these techniques are being introduced to improve the speed and efficiency of disease diagnosis and treatment. Each of the AI techniques presented in the paper is supported with an example of a possible medical application. Given the rapid development of technology, the use of AI in medicine shows promising results in the context of patient care. It is particularly important to keep a close eye on this issue and conduct further research in order to fully explore the potential of ML, ANNs, and DL, and bring further applications into clinical use in the future.

23 June 2016 in Surgical Endoscopy
Verified
Journal Article
Closed access
PDF file
AAAlberto Arezzo
Alberto Arezzo
YMYoav Mintz
Yoav Mintz
MAMarco Ettore Allaix
Marco Ettore Allaix
SASIMONE AROLFO
SIMONE AROLFO
MBMarco Bonino
Marco Bonino
MMMario Morino
Mario Morino

22 September 2023 in Journal of Personalized Medicine
Verified
Journal Article
Open access
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Jakub KufelJakub Kufel
Jakub Kufel
MBMichał Bielówka
Michał Bielówka
MRMarcin Rojek
Marcin Rojek
AMAdam Mitręga
Adam Mitręga
PLPiotr Lewandowski
Piotr Lewandowski
ZNZbigniew Nawrat
Zbigniew Nawrat
In recent years, deep neural networks have enabled countless innovations in the field of image classification. Encouraged by success in this field, researchers worldwide have demonstrated how to use Convolutional Neural Network techniques in medical imaging problems. In this article, the results were obtained through the use of the EfficientNet in the task of classifying 14 different diseases based on chest X-ray images coming from the NIH (National Institutes of Health) ChestX-ray14 dataset. The approach addresses dataset imbalances by introducing a custom split to ensure fair representation. Binary cross entropy loss is utilized to handle the multi-label difficulty. The model architecture comprises an EfficientNet backbone for feature extraction, succeeded by sequential layers including GlobalAveragePooling, Dense, and BatchNormalization. The main contribution of this paper is a proposed solution that outperforms previous state-of-the-art deep learning models average area under the receiver operating characteristic curve—AUC-ROC (score: 84.28%). The usage of the transfer-learning technique and traditional deep learning engineering techniques was shown to enable us to obtain such results on consumer-class GPUs (graphics processing units).

1 March 2006 in The International Journal of Medical Robotics and Computer Assisted Surgery
Verified
Journal Article
Closed access
PDF file
ZNZbigniew Nawrat
Zbigniew Nawrat
PKP. Kostka
P. Kostka

8 September 2023 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
Jakub KufelJakub Kufel
Jakub Kufel
KBKatarzyna Bargieł-Łączek
Katarzyna Bargieł-Łączek
MKMaciej Koźlik
Maciej Koźlik
Łukasz CzogalikŁukasz Czogalik
Łukasz Czogalik
PDPiotr Dudek
Piotr Dudek
ZNZbigniew Nawrat
Zbigniew Nawrat
Diagnostic imaging has become an integral part of the healthcare system. In recent years, scientists around the world have been working on artificial intelligence-based tools that help in achieving better and faster diagnoses. Their accuracy is crucial for successful treatment, especially for imaging diagnostics. This study used a deep convolutional neural network to detect four categories of objects on digital chest X-ray images. The data were obtained from the publicly available National Institutes of Health (NIH) Chest X-ray (CXR) Dataset. In total, 112,120 CXRs from 30,805 patients were manually checked for foreign objects: vascular port, shoulder endoprosthesis, necklace, and implantable cardioverter-defibrillator (ICD). Then, they were annotated with the use of a computer program, and the necessary image preprocessing was performed, such as resizing, normalization, and cropping. The object detection model was trained using the You Only Look Once v8 architecture and the Ultralytics framework. The results showed not only that the obtained average precision of foreign object detection on the CXR was 0.815 but also that the model can be useful in detecting foreign objects on the CXR images. Models of this type may be used as a tool for specialists, in particular, with the growing popularity of radiology comes an increasing workload. We are optimistic that it could accelerate and facilitate the work to provide a faster diagnosis.

18 May 2017 in Microsystem Technologies
Verified
Journal Article
Closed access
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JRJanos Rado
Janos Rado
CDCsaba Dücső
Csaba Dücső
PFPéter Földesy
Péter Földesy
GSGábor Szebényi
Gábor Szebényi
ZNZbigniew Nawrat
Zbigniew Nawrat
PFPéter Fürjes
Péter Fürjes