Dossier - 08/09/2022

Imaging methods in medical diagnostics

Many different imaging methods are available these days and are used in almost all medical disciplines to visualise disease-related changes. Depending on the problem and the clinical picture, very different structural and functional parameters can be visually recorded for diagnosis and used for therapy.

An unexpected discovery surprised a scientist at the Max Planck Institute for Intelligent Systems in Stuttgart: nanometer-sized diamond particles, which were intended for a completely different purpose, shone brightly in a magnetic resonance imaging experiment – much brighter than the actual contrast agent, the heavy metal gadolinium. Could diamond dust one day become a novel contrast agent used for MRI?

Microrobots have the potential to revolutionize medicine. Researchers at the Max Planck ETH Centre for Learning Systems have now developed an imaging technique that for the first time recognises cell-sized microrobots individually and at high resolution in a living organism. This is an important step towards precise control of the robots and their clinical translation.

Max Planck scientists will present a low-field magnetic resonance imaging (MRI) scanner in Lindau. Two researchers from the MPI for Biological Cybernetics in Tübingen, Germany, will present a model of a new low-field MRI system. It combines hyperpolarization with imaging techniques that can be run at low magnetic field strengths. The quality of the MRI images can be enhanced with the help of artificial intelligence.

Researchers have designed synthetic and inducible proteins that bind to bright fluorescent dyes with high specificity and affinity, significantly expanding the toolkit for multicolour imaging of proteins inside cells.

Researchers from EMBL and Heidelberg University Hospital combine high-resolution imaging to observe the infection process in cell nuclei, opening the door for new therapeutics.

How well do the algorithms used in the AI-supported analysis of medical images perform their tasks? This depends to a large extent on the metrics used to evaluate their performance. An international consortium led by scientists from the German Cancer Research Center and the National Center for Tumor Diseases has compiled the knowledge available worldwide on the specific strengths, weaknesses and limitations of the various validation metrics.

Do BMMFs, the novel infectious agents found in dairy products and bovine sera, play a role in the development of colorectal cancer? Scientists led by Harald zur Hausen detected the pathogens in colorectal cancer patients in close proximity to tumors. The researchers show that the BMMFs trigger local chronic inflammation, which can cause mutations via activated oxygen molecules and thus promote cancer development in the long term.

A pioneering technique developed by the Prevedel Group at EMBL allows neuroscientists to observe live neurons deep inside the brain – or any other cell hidden within an opaque tissue. The technique is based on two state-of-the-art microscopy methods, three-photon microscopy and adaptive optics. The paper reporting on this advancement was published on 30th September 2021 in Nature Methods.

How can camera images be used during minimally invasive surgeries to assess whether the operated organ is sufficiently perfused with blood? Scientists from the German Cancer Research Center (DKFZ) and the Städtisches Klinikum Karlsruhe have now succeeded in automatic monitoring of ischemia during a kidney surgery using only the optical properties of the tissue and not relying on injection of contrast agent.

Scientists from the EMBL and the German Cancer Research Center have presented a new method for generating metabolic profiles of individual cells. The method, which combines fluorescence microscopy and a specific form of mass spectroscopy, can analyze over a hundred metabolites and lipids from more than a thousand individual cells per hour. Researchers expect the method to better answer a variety of biomedical questions in the future.

Scientists use super-resolution microscopy to study previously undiscovered cellular worlds, revealing nanometer-scale details inside cells. This method revolutionized light microscopy and earned its inventors the 2014 Nobel Prize in Chemistry. In an international collaboration, AI researchers from Tübingen have now developed an algorithm that significantly accelerates this technology.

Nanoparticles are omnipresent in our environment: Viruses in ambient air, proteins in the body, as building blocks of new materials for electronics, or in surface coatings. Visualizing these smallest particles is a problem: They are so small that they can hardly be seen under an optical microscope.

Researchers at the University of Konstanz publish image analysis software that automatically detects and classifies defects of animal development. Thanks to artificial intelligence, "EmbryoNet" outperforms human experts in terms of speed, accuracy and sensitivity.

In the medicine of the future, tiny robots will navigate independently through tissue and medical instruments will indicate their position inside the body during surgery. Both require doctors to be able to localize and control the devices precisely and in real time. Scientists from the German Cancer Research Center (DKFZ) have now described a signaling method based on an oscillating magnet that can significantly improve such medical applications.

Like all viruses, the Ebola virus is dependent on host cells in order to replicate. Researchers at Heidelberg University Hospital, in collaboration with colleagues from the Friedrich Loeffler Institute, have been able to show for the first time using state-of-the-art imaging techniques how the replication compartments of the Ebola virus change during replication in infected cells.

Illuminating the tiniest details of living cells just got a major boost: Scientists at the Max Planck Institute for Medical Research have developed new markers that glow in the far-red range and are activated by light. They are stable, easy to control, and compatible with several super-resolution microscopy techniques, as outlined in a paper published in the journal Chem.

NVision announced a $55 million Series B led by Abbott and unveiled PIQC, a new quantum computing platform built on its molecular quantum technology.

Enhancing human perception of the imperceptible - 28/08/2025

AI-driven imaging expands possibilities in surgery

Doctors frequently experience a restricted view of the surgical field, particularly during endoscopic procedures. A novel technique developed by Prof. Dr. Lena Maier-Hein's team at the DKFZ in Heidelberg integrates spectral imaging with AI-driven data analysis. This innovation facilitates accurate tissue differentiation and delivers real-time insights into organ function.

The protein SNAP-tag is a powerful tool for labeling proteins with synthetic fluorophores for bioimaging. Scientists at the Max Planck Institute for Medical Research in Heidelberg have engineered a much improved version named SNAP-tag2 as well as optimized substrates for faster labeling in live cells.

The cellular environment of a tumor can either support or sabotage recovery. The most comprehensive study to date on the tumor microenvironment in low-grade gliomas, conducted by KiTZ, Jena University Hospital, the DKFZ, and Heidelberg University Hospital, shows what a supportive or obstructive “neighborhood” looks like in childhood brain tumors. The study also provides clues as to how tumor communication might be blocked.

How can artificial intelligence support medical imaging diagnostics in the future and significantly improve patient care? Researchers led by Lena Maier-Hein (German Cancer Research Center, DKFZ, and NCT Heidelberg) have developed an innovative concept to address this question. The Carl Zeiss-Stiftung is funding the MEDAL* project with a total of three million euros.

A recent study published in the European Respiratory Journal provides important new insights into the early identification and monitoring of chronic obstructive pulmonary disease (COPD). The focus is on airway wall thickness as an imaging marker for structural remodeling processes in the lungs.

Innovations in the field of endoscopy - 08/06/2020

Gastroscopies with pill cameras

A pill camera to examine the gastrointestinal tract that can be swallowed without major difficulty, controlled intuitively from the outside and deliver images in real time - why would any doctor or patient say no? To non-experts, it sounds more like science fiction but such a device is actually already in development: since 2019, Tübingen-based Ovesco Endoscopy AG and three partners have been working together on this in a project called nuEndo.