Navigation Links
New imaging technique visualizes cancer during surgery
Date:9/19/2011

Ovarian cancer is one of the most frequent forms of cancer that affect women. As tumors can initially grow unchecked in the abdomen without causing any major symptoms, patients are usually diagnosed at an advanced stage and have to undergo surgery plus chemotherapy. During the operation, surgeons attempt to remove all tumor deposits as this leads to improved patient prognosis. To do this, however, they primarily have to rely on visual inspection and palpation - an enormous challenge especially in the case of small tumor nests or remaining tumor borders after the primary tumor excision.

Yet surgeons could now be getting support from a new multispectral fluorescence imaging system developed by a team of researchers in Munich, headed by Vasilis Ntziachristos, Professor of Biological Imaging. A study carried out on nine patients with ovarian cancer has shown that the new system can be used to localize cancer cells during surgery. Before the operation, the patients were injected with folic acid chemically coupled to a green fluorescent dye. Most ovarian tumors have a protein molecule on their surface that bonds with folic acid and transports it inside the cell. This protein is known as the folate receptor alpha. During abdominal surgery, the surgeon can then shine a special laser light onto the patient's ovaries, causing the green-labeled folic acid inside the cancer cells to emit light. Healthy tissue remains dark.

The fluorescent cancer cells, however, cannot be detected by the naked eye. Three cameras, mounted on a pivoting support arm over the operating table, detect optical and fluorescent signals at multiple spectral bands and then correct for light variations due to illumination and tissue discolorations in order to provide truly accurate fluorescence images that can be simultaneously displayed with corresponding color images on monitors in the operating room. The surgeon can thus check whether all the cancer cells have been removed by inspecting for remnant fluorescence light. In eight of the nine patients, doctors were able to remove small clusters of tumor cells that might otherwise have gone undetected. The multispectral fluorescence imaging system has thus passed its first OR test. However, it will have to prove its value to improve clinical outcome in further operations before it can be deployed for routine surgical procedures.

The researchers in Munich and Groningen also want to further develop the camera system so it can be used to detect other forms of tumors during operations. Of significant importance in future developments is the ability to offer accurate fluorescence imaging so that data collected reflect true presence of disease. "The use of advanced, real-time optical technology will allow us to standardize data collection and accuracy so that studies performed at multiple clinical centers can be accurately compared and analyzed" explains Prof. Vasilis Ntziachristos. This is important for the clinical acceptance of the technology and its approval by regulatory agencies. In the future patient selection through personalized medicine approaches, for example by obtaining a molecular profile of the tumor of each patient, would further enable custom-tailored surgical treatment of improved accuracy. The team is also planning to build a version for minimally invasive operations.


'/>"/>

Contact: Dr. Markus Bernards
bernards@zv.tum.de
49-892-892-2562
Technische Universitaet Muenchen
Source:Eurekalert

Related medicine news :

1. Researchers utilize neuroimaging to show how brain uses objects to recognize scenes
2. New hybrid imaging device shows promise in spotting hard-to-detect ovarian cancer
3. New imaging test gives physicians better tool to diagnose Parkinsons disease
4. Imaging probe allows noninvasive detection of dangerous heart-valve infection
5. New high-speed 3-D imaging system holds potential for improved cancer screening
6. New CMU brain imaging research reveals why autistic individuals confuse pronouns
7. New imaging technique captures brain activity in patients with chronic low back pain
8. High-resolution imaging technology reveals cellular details of coronary arteries
9. IASLC: Adjunctive use of 3-D imaging system increases utility of CT lung cancer screening
10. Self-referral: A significant factor in imaging growth
11. Women May Be Getting Unneeded Heart Imaging Tests
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/20/2017)... ... January 20, 2017 , ... “Code Word: Chocolate Biscuit”: a biographical account following a man ... is the creation of published author, Marlyn Ivey, born in Lynn Haven, Florida and at ... school and at 19 years of age, he joined the Navy and got married right ...
(Date:1/20/2017)... (PRWEB) , ... January 20, 2017 , ... ... vPEP ® Oscillating Positive Expiratory Pressure (OPEP) device, was featured in a study ... Doug Pursley, MEd, RRT-ACCS, FAARC, “Analysis of Three Oscillating Positive Expiratory Pressure ...
(Date:1/20/2017)... ... ... a beautiful and enchanting tale that teaches children the true meaning of Christmas. “Journey to ... City, and a devoted woman of faith. , “Becoming a parent changes you. In ... my mind for years, but actually doing it might have been a while in coming ...
(Date:1/20/2017)... ... , ... “The Land of More and More”: a brilliant story for ... shares the simple and achievable answer. “The Land of More and More” is the ... Church in Angola, Indiana where he works with the children’s ministry department. , ...
(Date:1/19/2017)... ... 20, 2017 , ... Today, the Centers for Medicare & Medicaid Services (CMS) ... Payment Models (APMs) in 2017. Clinicians who participate in APMs are paid for the ... of the Administration’s effort to build a system that delivers better care and one ...
Breaking Medicine News(10 mins):
(Date:1/20/2017)... 20, 2017  Palladian Health, a leading provider ... launch of an opioid management program which assists ... and helps stem the growing tide of dependence ... treat chronic non-cancer pain (back pain, neck pain, ... lack of evidence regarding long-term effectiveness. ...
(Date:1/20/2017)... January 20, 2017 Avillion LLP, a co-developer ... Mark Weinberg , MD MBA as Chief Medical Officer. Dr ... USA . ... Dr Weinberg has spent more than 17 years as a ... companies to micro-cap biotech. Over the course of his career, he ...
(Date:1/19/2017)... YORK , Jan. 19, 2017 Report ... Ophthalmic Devices Market? Which areas are going to grow ... potential revenues to 2026, assessing data, trends, opportunities and ... and graphs. Discover the most lucrative areas in the ... lets you assess forecasted sales across the all the ...
Breaking Medicine Technology: