Mental health disorders represent a growing global healthcare challenge affecting hundreds of millions of people worldwide. Major depressive disorder (MDD), anxiety disorders, post-traumatic stress disorder (PTSD), and Alzheimer’s disease place huge pressure on medical systems. A central challenge is early detection, which remains difficult due to the complexity of symptoms related to these diseases. Delayed diagnosis is also due to limited access to specialists and the multimodal complexity of relevant biomarkers, clinical assessments, neuroimaging, physiological signals, and behavioral data. Recent developments in artificial intelligence (AI) have demonstrated promising results in improving diagnostic support. However, classical AI still struggles to model high-dimensional correlations and inherent uncertainties that are common to cognitive-emotional data. This chapter explores quantum machine learning (QML) as a transformative paradigm to overcome these limitations. We provide a comprehensive overview of foundational QML architectures and evaluate its suitability for processing diverse healthcare data such as neuroimaging, wearable sensor inputs, and electronic health records (EHRs). We propose a new conceptual framework for a quantum-enabled clinical decision support system that integrates multimodal feature extraction. Taking into consideration the sensitivity of psychiatric data, we critically examine security imperatives that include federated learning and post-quantum privacy protection. This chapter aims to provide researchers and practitioners with a comprehensive perspective on how quantum computing (QC) may contribute to future intelligent mental healthcare.
Mental health disorders represent a growing global healthcare challenge affecting hundreds of millions of people worldwide. Major depressive disorder (MDD), anxiety disorders, post-traumatic stress disorder (PTSD), and Alzheimer’s disease place huge pressure on medical systems. A central challenge is early detection, which remains difficult due to the complexity of symptoms related to these diseases. Delayed diagnosis is also due to limited access to specialists and the multimodal complexity of relevant biomarkers, clinical assessments, neuroimaging, physiological signals, and behavioral data. Recent developments in artificial intelligence (AI) have demonstrated promising results in improving diagnostic support. However, classical AI still struggles to model high-dimensional correlations and inherent uncertainties that are common to cognitive-emotional data. This chapter explores quantum machine learning (QML) as a transformative paradigm to overcome these limitations. We provide a comprehensive overview of foundational QML architectures and evaluate its suitability for processing diverse healthcare data such as neuroimaging, wearable sensor inputs, and electronic health records (EHRs). We propose a new conceptual framework for a quantum-enabled clinical decision support system that integrates multimodal feature extraction. Taking into consideration the sensitivity of psychiatric data, we critically examine security imperatives that include federated learning and post-quantum privacy protection. This chapter aims to provide researchers and practitioners with a comprehensive perspective on how quantum computing (QC) may contribute to future intelligent mental healthcare.
The growing volume of biomedical data from electronic health records, medical imaging, genomic sequencing, wearable Internet of Medical Things (IoMT) devices, and precision medicine has created new opportunities as well as significant computational challenges for healthcare. This chapter explores how Quantum Machine Learning (QML) can complement conventional machine learning by improving the analysis of complex, high-dimensional healthcare data through hybrid quantum–classical approaches. It introduces the fundamentals of quantum computing and discusses their application in genomics, medical imaging, drug discovery, IoMT-enabled healthcare, and cybersecurity. The chapter also presents an integrated framework that brings together quantum-enabled analytics, secure communication, and clinical decision support, while highlighting current challenges, ethical considerations, and future directions such as fault-tolerant quantum computing, explainable quantum AI, federated quantum learning, and post-quantum healthcare security.
The convergence of quantum computing and artificial intelligence is creating new opportunities for smart healthcare, particularly in medical image analysis, privacy-preserving data management, and clinical decision support. This chapter presents a conceptual and architectural overview of quantum machine learning (QML) for a multidisciplinary audience. It introduces quantum computing fundamentals and discusses quantum kernel methods and variational quantum circuits using the MedMNIST benchmark. A geometric separation diagnostic is proposed as a conceptual, computationally inexpensive, hardware-independent screening construct for indicating whether quantum encoding places data in a label-separable configuration, with its empirical validation identified as future work. The chapter further examines privacy-preserving healthcare through federated learning, synthetic data governance, differential privacy, post-quantum cryptography, and regulatory considerations, and presents a five-layer quantum-enhanced healthcare architecture together with key challenges and future research directions.
Prompt diagnosis of disease is a key determinant in reducing mortality, improving patient care and decreasing healthcare costs. Despite the success of classical machine learning (ML) in improving predictive modeling across oncology, cardiology, and neurology, growing data dimensionality and computational complexity remain ongoing barriers. Quantum computing based on superposition and entanglement is a promising computational paradigm that shows potential advantages in high-dimensional pattern recognition and kernel-based learning. This review aims to systematically summarize preliminary work on quantum machine learning (QML) with empirical applications for early disease diagnosis, focusing on its theoretical underpinnings in addition to its algorithmic design and use in healthcare. We then frame the discussion with respect to quantum support vector machines and variational quantum classifiers, quantum kernels, as well as hybrid quantum–classical architectures. We further evaluate existing hardware constraints in the noisy intermediate-scale quantum (NISQ) era and appraise translational maturity for integration into public health. While clinical deployment is still far from broad, hybrid QMLs are proving useful in low-data and complex-feature contexts. We end with research challenges, regulatory guidance, and strategic directions towards enabling quantum-enhanced precision diagnostics aligned with U.S. public health innovation initiatives.
Prompt diagnosis of disease is a strong driver for decreasing mortality, improving patient care and healthcare expenditures. Classical machine learning (ML), which has shown great potential in bolstering predictive modeling throughout oncology, cardiology, and neurology, runs the risk of excessive data dimensionality along with high computational complexity. Quantum computing is an exciting new paradigm for computation that takes advantage of superposition and entanglement which can be beneficial in learning patterns in high-dimensional spaces and for kernel-based learning. This review provides a systematic summary of the preliminary work on quantum machine learning (QML) with empirical applications to early disease diagnosis, while emphasizing its theoretical foundations, algorithmic developments and application in healthcare. We scope the conversation on quantum support vector machines, variational quantum classifiers, quantum kernels and hybrid architectures for a quantum classical. We also examine current hardware limitations in the NISQ era and assess how close these methods are to being ready for translation into public health applications. Although widespread clinical application is still far away, hybrid QML approaches are finding utility in low-data and high-complexity settings. We conclude with a discussion of research challenges, regulation and strategy towards realizing such quantum-enhanced precision diagnostics through U.S. public health innovation initiatives
The merger between Quantum Computing (QC) and Machine Learning (ML) will enable health analytics to be experienced in a way never seen before with unmatched efficiency and power. Conventional methods of healthcare data processing have not been able to work with very big and complex data sets that are related to medical imaging, genomics, and real-time tracking of the patients. Quantum Machine Learning (QML) has an advantage, as it uses new algorithms to work with such multidimensional data with much better accuracy, speed, and predictive power. This paper presents the essential contribution of QML to healthcare analytics, such as supporting diagnosis, to personalized medicine and predictive modelling. This quantum enhanced deep learning models will achieve what is currently being done at the larger scale in the field of medicine at a faster rate a thousand times, through earlier detection of diseases like cancer, Alzheimer disease and heart diseases. In drug discovery, quantum algorithms decrease the simulation of molecular interactions down to the atomic scale, which saves a substantial amount of time and cost of research. Security is, nevertheless, a massive issue since future developments in quantum theory will generate quantum-wise systems that will bring misfortunes to conventional encryption solutions adopted within healthcare systems. The implications of post-quantum cryptography that ensures the strong data privacy and safe patient records in quantum-powered ecosystem are discussed. Scalability obstacles, systems creation, and integration with traditional ML models, however, exist. Real-world applications and future perspectives on the quantum-enhanced healthcare analytics upon which plans have already been laid are presented. Looking ahead, QML will build in the transition of healthcare systems toward analytics frameworks faster, much more precise, and enhanced secure, heralding in the day of precision medicine early diagnostics and a new age for healthcare innovation.
The rapid growth of Electronic Health Records (EHRs), along with the need for accurate, real-time clinical documentation, has pushed traditional computing methods to their operational limits. Conventional machine learning techniques often fall short when handling the heterogeneous, high-dimensional nature of healthcare data—especially in situations where clinical decisions must be made quickly and reliably. To overcome these challenges, this study introduces a Quantum Computing–Enabled Clinical Decision Support System (QC-CDSS), which integrates quantum machine learning (QML) with advanced deep learning models to improve diagnostic accuracy and predictive performance. The proposed framework utilizes quantum-driven feature extraction, hybrid variational quantum circuits, and quantum kernel-based classifiers to process both structured EHR records and unstructured clinical narratives. In parallel, sophisticated natural language processing methods, including transformer-based architectures, are employed to capture semantic, contextual, and temporal patterns from physician notes, discharge summaries, radiology interpretations, and related clinical text. The convergence of these techniques—particularly the integration of QML—presents promising opportunities for achieving more effective decision support and faster analysis of high-dimensional medical data. This paper discusses the core concepts, major applications, existing challenges, and future research pathways for incorporating quantum-enhanced machine learning into clinical decision-making systems, emphasizing their potential to address complex healthcare problems more efficiently.