New technique for distinguishing tumour from normal tissue

▴ tumour
Newcastle University Experts and a group of scientists have created a visual aid that uses fluorescent injection and high-speed cameras to differentiate between tumour and healthy tissue in a variety of cancer types.

January 23, 2024: Surgeons frequently have to rely on their hands and eyes to guide them in deciding where to make incisions to remove a patient's tumour while preserving the healthy tissue. This traditional method can be subjective and prone to human error. To enhance surgical precision, surgeons are now incorporating advanced technologies such as imaging techniques. These innovations provide real-time visualization and guidance, enabling surgeons to accurately locate and remove tumours while minimizing damage to surrounding healthy tissue.

 

Newcastle University Experts and a group of scientists have created a visual aid that uses fluorescent injection and high-speed cameras to differentiate between tumour and healthy tissue in a variety of cancer types.

 

Fluorescence lifetime (FLT) imaging is a new imaging technology that was assessed by experts using specimens from over 60 patients, including those from Newcastle Hospitals, who had surgery for different types of cancer. A paper on this study was also published in Nature Biomedical Engineering. The approach has the potential to increase the precision of cancer procedures and was found to be over 97% accurate across all tumour types. Numerous technologies, such as fluorescent imaging and advanced microscopy, have been explored to enhance the visualization of tumours during surgery; however, these technologies have not been extensively implemented and are primarily limited to particular cancer types or subtypes.

 

Fluorescence imaging can target cancer-specific molecules with dyes, however, because these molecules' expression varies considerably within and between tumour types, traditional imaging techniques may not be as accurate in detecting tumour margins, or the boundaries of normal tissue around a tumour. The team's method, called FLT imaging, adopts a different approach. Rather than depending solely on dyes to target cancer, the method makes use of high-speed cameras to identify alterations in the characteristics of the light that tissues release.

 

Newcastle University Experts and the team used patient samples and the same principle in their present investigation. The group started by examining samples from individuals having surgery on their heads, necks, and livers. ICG injections were given to the patients at least one day before the procedure.

 

“Our contribution has included input from patients undergoing surgery for musculoskeletal cancers who kindly donated their tumours for research and also the NovoPath laboratories who were able to support the processing of the tissue. We look forward to the next developments which will put Newcastle at the forefront of the introduction of this technology into clinical practice.”, said Dr Kenny Rankin, Honorary Senior Lecturer at Newcastle University and Consultant Orthopaedic Surgeon at Newcastle Hospitals.

 

Expanding upon these preliminary findings, the group worked in conjunction with several institutions to assess specimens from over sixty patients exhibiting a variety of cancer types, including liver, brain, tongue, skin, bone, and soft tissue cancers. The group identified a cellular FLT change present in several individuals and tumour types. Additionally, the method could differentiate between benign and metastatic lymph nodes. All things considered, it was over 97% accurate in differentiating between cancer and healthy tissue.

 

Contribution from patients

 

Dr. Kenny Rankin added, “On behalf of the North of England Bone and Soft Tissue Tumour Service it has been exciting to work on this project.”

 

Newcastle Health Innovation Partners (NHIP) includes both Newcastle Hospitals and Newcastle University. As one of the UK's eight esteemed Academic Health Science Centres (AHSCs), NHIP brings together collaborators to provide superior patient care, health education, and research.

 

ABOUT NEWCASTLE UNIVERSITY: Newcastle University, UK, is a thriving international community of more than 28,000 students from over 130 countries worldwide. As a member of the Russell Group of research-intensive universities in the UK, Newcastle has a world-class reputation for research excellence in the fields of medicine, science and engineering, social sciences and the humanities. Its academics are sharply focused on responding to the major challenges facing society today. Our research and teaching are world-leading in areas as diverse as health, culture, technology and the environment. Newcastle University is committed to providing our students with excellent, research-led teaching delivered by dedicated and passionate teachers. Newcastle University is ranked 110th  in the QS World Ranking 2024 and 139th in the Times Higher Education World University Ranking 2023.

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