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Morbus Crohn: New Imaging Technique For Effective Therapy | NEWS-Line for Emergency & Urgent Care Providers

Morbus Crohn: New Imaging Technique For Effective Therapy


Patients suffering from Crohn's disease, a chronic inflammatory intestinal disorder, develop painful constrictions in the bowel. Due to a lack of methods until now, these complications cannot be characterised with sufficient precision to initiate targeted treatment. An interdisciplinary research group at MedUni Vienna has investigated a new imaging technique that can improve the treatment of intestinal strictures. The results of the study were recently published in the renowned journal "Radiology".

Intestinal strictures are a common problem in patients with Crohn's disease, a chronic inflammatory bowel disease that affects over 20,000 people in Austria. These strictures lead to cramping pain and digestive problems and therefore practically always require treatment. While purely inflammatory strictures respond very well to drug therapies, fibrotic narrowing, i.e. those associated with irreversible tissue changes, require surgical intervention. However, combinations of inflammation and fibrosis are often present in varying degrees. Up to now, there is no imaging procedure which allows a therapy-relevant differentiation of inflammation of the intestinal wall and fibrosis.

New tracer applied for the first time
In the search for precise imaging methods, a novel nuclear medicine tracer was used for the first time as part of MedUni Vienna's interdisciplinary research work at the University Department of Radiology and Nuclear Medicine. This so-called FAPI tracer binds specifically to the fibroblast activating protein (FAP) of the connective tissue cells that lead to fibrosis in the diseased intestinal wall. Using the new tracer, a very good correlation of molecular imaging with the pathological extent of fibrosis could be demonstrated with the utilisation of the diagnostic procedure PET-MRI. Even the differentiation between moderate and severe intestinal wall fibrosis became possible, which plays a role in the therapy decision.

"In future, the molecular imaging we have developed could be used to identify those patients who would benefit from surgical intervention at an early stage, thereby sparing them the need for less effective drug therapy for fibroid-stenosis," says co-study leader Michael Bergmann from the Department of Visceral Surgery at MedUni Vienna's Department of General Surgery, summarising the great potential of these research findings. The study, led by the Department of Radiology and Nuclear Medicine, also involved scientists from the Clinical Institute of Pathology and the Department of Gastroenterology and Hepatology at the Department of Internal Medicine III. Follow-up studies are now planned in which the new method will be applied on a larger scale. "In this context, we shall examine the course of patients with fibroid-stenosis and possible reversibility under new drug therapies," says first author Martina Scharitzer (Department of Radiology and Nuclear Medicine).

Publication: Radiology
Evaluation of Intestinal Fibrosis with 68Ga-FAPI PET/MR Enterography in Crohn Disease
Martina Scharitzer, Andrea Macher-Beer, Thomas Mang, Lukas W. Unger, Alexander Haug, Walter Reinisch, Michael Weber, Thomas Nakuz, Lukas Nics, Marcus Hacker, Michael Bergmann, Sazan Rasul

Medical University of Vienna - short profile
Medical University Vienna (MedUni Vienna) is one of the longest-established medical education and research facilities in Europe. With almost 8,000 students, it is currently the largest medical training centre in the German-speaking countries. With 6,000 employees, 30 departments and two clinical institutes, 13 medical theory centres and numerous highly specialised laboratories, it is also one of Europe's leading research establishments in the biomedical sector.

Source: MedUni Vienna

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