11/14/2025 • by Jonas Kellermeyer
AI in Medical Tech: Feasibility and Effectiveness
AI in medical technology is no longer a vague promise but has effectively become part of the underlying infrastructure. What matters is not how many models are developed, but whether they prove to be effective, safe, and integrable in everyday clinical care. Wherever artificial intelligence supports radiology, cardiology, or pathology, the focus shifts: away from mere feasibility toward robust clinical evidence and toward a form of design that takes the human being within the system seriously.
Regulatory Requirements: From Idea to Approved Medical Device
The path begins with a clearly defined intended purpose. Many solutions fall under SaMD (Software as a Medical Device) and must therefore comply with the requirements of the MDR (Medical Device Regulation) or IVDR (In Vitro Diagnostic Regulation). A robust quality management system following ISO 13485, a well-documented software lifecycle according to IEC 62304, and usability engineering in line with IEC 62366 form the foundation. What may sound dry is, in practice, an essential protective layer: only a well-balanced process can safeguard against negligent misuse, unclear responsibilities, or the confusion of relative accuracy with absolute truth. Especially in environments where human physical integrity is at stake, it becomes crucial to act with caution rather than fall into unreflected, tech-driven enthusiasm.
Data Quality and Data Protection: The Foundation of Clinical AI
In parallel to the importance of process, the following also holds true: without correct data, there is no progress. Data protection in line with the GDPR, pseudonymisation, role-based access control and audit trails are not obstacles, but rather the very conditions for long-term trust. Anyone wishing to avoid bias must pay attention to representative (including synthetic) datasets, measure subgroup performance and, at the same time, test for generalisability across clinics, devices and populations. A federated learning approach can help keep sensitive raw data safely on site while still improving the underlying models.
Explainable AI and Human-in-the-Loop: Trust as a Design Principle
AI in medical technology can ultimately only be considered effective if it is thoroughly understood. Explainable AI (XAI) is therefore not a technical luxury, but an ethical necessity. Clinicians must always be able to trace why a system makes a particular recommendation, which feature carries which weight, and where the zone of uncertainty begins that marks the logical limit of any diagnosis. Especially when dealing with highly sensitive information such as patients’ vital data, everyday practice is no place for experimentation.
Traceability in how information is processed determines trust – and that trust, in turn, determines whether everyday use is even possible.
Explainable systems reveal their decision logic on several levels:
- Globally, by describing the overall behaviour of the model (e.g. which features contribute most to classification on average), and
- Locally, by making individual decisions transparent (e.g. visual heatmaps in radiology or weighted attribution graphs in genomics).
This form of interpretability creates more than transparency – it creates an actual capacity for dialogue. Clinicians can not only verify the output, but actively integrate it into their own decision-making process.
This is where the principle of Human-in-the-Loop comes in. Instead of automating decisions, a cooperative intelligence emerges between human and machine. The AI system provides hypotheses, prioritizes cases, flags anomalies and offers decision support, while human judgment contextualizes, weighs and ultimately assumes responsibility.
The human remains the epistemic pacemaker; the machine serves as a resonance surface. A well-designed system knows when to step back – it signals uncertainty, presents options and makes its own reliability explicit. This attitude is what distinguishes assistance from autonomy: it allows for control without obstructing innovation.
In practice, this means:
- Explainability by Design – Models are conceived from the outset with explainable architectures, clear feature sets and documented data sources.
- Confidence Scoring & Uncertainty Management – Systems communicate probabilities, not truths.
- Feedback Loops – Clinicians can evaluate results, which in turn contributes to improving the models.
- Ergonomic Interfaces – Visualisations that minimise cognitive load instead of creating new complexity.
Understood this way, Explainable AI is not merely a promise of transparency, but a form of digital ethics in action. It promotes accountability, learning capacity and acceptance in equal measure. Only in combination with the Human-in-the-Loop approach does the kind of hybrid intelligence emerge that can truly make medical technology future-ready: empathetic, evidence-based and auditable.
Good systems explain how they arrive at their results. Explainable AI is therefore a core product requirement, not a nice-to-have. Interpretability creates meaningful touchpoints for clinical judgment. The Human-in-the-Loop principle means: the AI prioritizes, the human decides. It signals uncertainty, shows alternative paths and explicitly allows dissent. In doing so, it enables a professional alliance in which algorithms offer speed and consistency, while experts keep the clinical context in view and carry the responsibility.
Clinical Evidence: Impact Instead of Promises
Clinical-effectiveness emerges beyond model metrics. It becomes visible only through real therapeutic impact. Prospective studies with patient-centred endpoints, comparisons with the standard of care, multicentre validation and real-world evidence after go-live form a learning system that monitors both stability and drift. Health-economic outcomes are tied above all to three measurable dimensions: time saved, costs reduced and errors avoided. The guiding principle is simple: anyone who promises a benefit must be able to demonstrate it.
Integration Into Everyday Clinical Practice: Interoperability as a Key Factor
Many AI projects do not fail because of the model itself, but because they are poorly embedded in day-to-day operations. Interoperability is not a technical detail but a clinical necessity: FHIR (Fast Healthcare Interoperability Resources) and HL7 (Health Level Seven), DICOM (Digital Imaging and Communications in Medicine), integration with PACS (Picture Archiving and Communication System), RIS (Radiology Information System) and HIS (Hospital Information System), and results available exactly where decisions are made. Secure operation goes hand in hand with safe updates, minimal latency, appropriate monitoring of performance drift, and clearly defined responsibilities between manufacturer, IT and the clinic itself.
Ethics and Acceptance: Technology That Merits Trust
Ethics, in this context, is anything but abstract — it is an eminently practical discipline. AI may reveal differences, but it must never reinforce them or create new ones. To ensure this, systems need clearly documented data provenance, transparent training protocols, continuous fairness audits and user information that is understandable rather than opaque. A crucial dimension of introducing AI into healthcare is effective change management. From high-quality training sessions to guided rollouts and feedback channels that are genuinely used, every measure that empowers people to assign meaningful value to new technologies becomes part of the ethical architecture. Technology reshapes how clinical work is done; a thoughtful introduction helps sharpen the collective vision behind it.
Guidelines for Responsible AI in Medical Technology
What remains is a highly workable framework:
- clear indication instead of an endless feature list
- a secure data environment in compliance with the GDPR
- measurable clinical objectives defined before training
- explainable models and a binding Human-in-the-Loop approach
- multicentre validation and a lifecycle plan for monitoring, calibration and updates
- interoperability from the very beginning
- an ethics board that takes the perspectives of patients and care staff seriously.
In this way, an initial idea becomes a medical device – and a device ultimately becomes a solution for comprehensive care.
Conclusion: Shaping the future instead of merely modelling it
AI in medical technology becomes truly effective when evidence, integration and governance converge. Not every model – and not every use case – has to be spectacular. Reliably better decisions are enough. In this way, feasibility is translated into care – and seemingly soulless technology becomes a practice that genuinely helps people.