Raman spectroscopy – Oral Cancer News

Health and geology experts work together in 250k project to improve early detection of oral cancer

Source: www.abdn.ac.uk Author: issued by The Communications Team, Directorate of External Relations, University of Aberdeen University of Aberdeen experts across the institutes of Dentistry, Medical Sciences and The School of Geosciences will work together to improve the ability to detect malignant changes in precancerous lesions which can develop into oral cancer in a £250k project. Oral cancer is a growing health problem that has seen little improvement in survival rates, mainly because of late diagnosis when the disease has progressed beyond a cure. One of the main challenges clinicians face is the lack of ways to reliably predict malignant changes in oral potentially malignant disorders (OPMDs) which carry a higher risk of developing into cancer. The researchers will use techniques typically used in geological and material science to develop methods that can detect disease progression to help identify patients at early stages when the potential of a cure is more likely. Funded by Cancer Research UK, the multidisciplinary team from the University of Aberdeen, including Dr Rasha Abu-Eid of the Institute of Dentistry, Professor Valerie Speirs from the Institute of Medical Sciences, and Dr Dave Muirhead, Head of the School of Geosciences, will work with specialists around the world including Professor WM Tilakaratne and Dr TG Kallarakkal from the University of Malaya in Malaysia, Professor BSMS Siriwardena from the University of Peradeniya in Sri Lanka and Professor J James from Queen’s University Belfast, Northern Ireland. Dr Rasha Abu-Eid explains: “In recent years we have seen a rise in oral cancer [...]

Oral Cancer Foundation News Team - A2023-03-02T21:47:34-07:00March, 2023|Oral Cancer News|

Research applies Raman spectroscopy to oral cancer diagnostics

Source: www.photonics.com Author: staff According to research from the University Medical Center Hamburg-Eppendorf, Raman spectroscopy may provide early detection of oral squamous cell carcinoma. One of the most common cancers, oral squamous cell carcinoma is often undetected until a late stage. Currently, clinically apparent, conspicuous mucosal lesions of the oral cavity require initial conservative treatment and monitoring. If they persist, surgical biopsy is used to make a diagnosis. “Our study shows the potential of Raman spectroscopy for revealing whether a lesion is cancerous in real time,” said research team leader Levi Matthies. “Although it won’t replace biopsies any time soon, the technique could help reduce the lapse of valuable time as well as the number of invasive procedures.” The researchers used a variation of Raman spectroscopy known as SERDS (shifted excitation Raman difference spectroscopy), which is capable of analyzing tissues that exhibit strong background fluorescence. To test the method, they designed a compact and portable Raman sensor consisting of a tunable diode laser, a fiber-coupled spectrometer, and a Raman probe. The scientists used the device to analyze unlabeled biopsy samples from 37 patients at 180 measurement locations. To classify the raw data, the team trained and tested computer models, ultimately distinguishing oral squamous cell carcinoma from nonmalignant lesions with an accuracy of over 88%, and from healthy tissue with an accuracy of over 89%. The majority of spectral features used to distinguish malignant and nonmalignant lesions came from protein and nucleic acid molecules. “Our results show that this approach is [...]

Oral Cancer Foundation News Team - A2021-01-15T15:51:27-07:00January, 2021|Oral Cancer News|

Detecting cancer’s biochemical ‘fingerprint’ for early diagnosis

Source: www.siliconrepublic.com Author: Claire O'Connell Detecting cancer in its early stages could help to make treatment more effective. Claire O’Connell found out from Dr Fiona Lyng about Cervassist, an emerging technology that uses spectroscopy to analyse tissue samples and spot when cells are showing signs of abnormality. So far the technology has been focusing on assessing cervical smear samples, which are routinely collected as part of screening programmes for cervical cancer in many countries. Cervical cancer is the one of the most common female cancers in Europe, and women are encouraged to be screened every few years. Cells are removed from the neck of the womb, and they are examined by eye under a microscope. If there are abnormal or potentially cancerous cells in the sample, the person can be monitored or treated as appropriate. Cervassist, which is being developed at Dublin Institute of Technology (DIT), could offer another view of those cells on the microscope slide. By shining laser light on the samples and collecting some of the scattered radiation, the technology can automatically analyse the biochemical content of the cells, explains Lyng, who is manager of the DIT Centre for Radiation and Environmental Science. "We use Raman spectroscopy to analyse the cervical samples – it's a vibrational spectroscopic technique that gives a biochemical fingerprint of a sample," she says. "If you shine laser light on a sample, light is scattered back and we collect the inelastic scatter, which contains information about the biochemical components in the sample, the [...]

Oral Cancer Foundation News Team - A2013-02-11T22:31:03-07:00February, 2013|Oral Cancer News|