Αρχική World News Radiation Treatment Delivery Improved Using a Visualization of the Invisible Radiation Beam

Radiation Treatment Delivery Improved Using a Visualization of the Invisible Radiation Beam

When a cancer patient is undergoing radiation treatment, neither she nor the radiation therapist providing the treatment can see the actual beam of radiation. Once the patient is properly marked and positioned for treatment, it’s impossible to see whether the invisible beam continues to hit the right spot throughout the session.

Of course, radiation therapists are careful to make sure the area being treated is perfectly lined up so that the treatment is effective and the radiation doesn’t harm any healthy cells outside of the treatment area. However, if the patient moves during treatment or if the equipment somehow slips from its original position, the radiation treatment may not work the way it is supposed to, and unexpected areas of the skin may be affected.

Photo: Adobe Stock/Mark Kostich

Thanks to a system called Cherenkov imaging, however, some cancer patients are getting a better experience than they used to. Cherenkov imaging provides a visual representation of the invisible beam of radiation, allowing the patient and the therapist to see exactly where the radiation is being directed in real time. In this way, the beam can be constantly monitored for accidental shifting and repositioned as necessary.

The system works by capturing light emissions during radiotherapy and creating a visual image on the skin’s surface in the exact shape of the area being targeted by radiation beams. The system ensures that every single linac pulse contributes to the image in real time, and the intensity of the light generated by the system is in direct proportion to the dose being delivered.

Photo: Adobe Stock/Mark Kostich

Article continues below

Our Featured Programs

See how we’re making a difference for People, Pets, and the Planet and how you can get involved!

At the Dartmouth-Hitchcock Medical Center, the Cherenkov imaging system is being used to give patients a better outcome after radiation therapy. The team there, led by Lesley Jarvis, conducted a study examining the usefulness of Cherenkov imaging in clinical practice.

“In this limited cohort, we found opportunities to improve treatment delivery for individual patients,” write the authors. “Of specific clinical importance, we show that Cherenkov imaging can detect stray radiation dose to tissues. Currently, there is no practical technique available to monitor contralateral breast dose or dose to other adjacent anatomy on a daily basis.”

The team studied 64 patients undergoing radiation therapy for breast cancer (29), sarcoma/lymphomas (23), and other cancers, using techniques including 3D conformal radiotherapy, total skin electron therapy, arc therapy, and total body irradiation. The team used the system’s automated image analysis software to determine that the Cherenkov emissions matched the expected distribution that had been predicted.

Photo: Adobe Stock/Mark Kostich

“Typical ROIs (regions of interest) for optical surface imaging systems are often focused on a small area and do not detect alignment issues outside of the ROI,” write the researchers. “This may have the consequence of giving the clinical team a false sense of security.”

The team is now planning a large retrospective analysis of clinical data from patients receiving radiation therapy at Dartmouth-Hitchcock to further investigate the benefits of Cherenkov imaging.

Provide Mammograms

Support those fighting Breast Cancer at The Breast Cancer Site for free!

Whizzco Source

NEWSLETTER

Συμπληρώστε το email σας για να λαμβάνετε τις σημαντικότερες ειδήσεις από το ogkologos.com

Βρείτε μας

2,449ΥποστηρικτέςΚάντε Like
57ΑκόλουθοιΑκολουθήστε

Διαβαστε Επίσης

Καρκίνος και Κορωνοϊός (COVID-19) ΜΕΡΟΣ Α

Εάν είστε καρκινοπαθής, το ανοσοποιητικό σας σύστημα μπορεί να μην είναι τόσο ισχυρό όσο κανονικά, έτσι μπορεί να ανησυχείτε για τους κινδύνους που σχετίζονται...

ΠΑΓΚΟΣΜΙΑ ΗΜΕΡΑ ΚΑΡΚΙΝΟΥ

Η Παγκόσμια Ημέρα Κατά του Καρκίνου καθιερώθηκε με πρωτοβουλία της Διεθνούς Ένωσης κατά του Καρκίνου (UICC), που εκπροσωπεί 800 οργανώσεις σε 155 χώρες του...

ΕΞΕΛΙΞΕΙΣ ΣΤΗ ΘΕΡΑΠΕΙΑ ΤΟΥ ΜΗ-ΜΙΚΡΟΚΥΤΤΑΡΙΚΟΥ ΚΑΡΚΙΝΟΥ ΤΟΥ ΠΝΕΥΜΟΝΑ (ΜΜΚΠ)

ΕΞΕΛΙΞΕΙΣ ΣΤΗ ΘΕΡΑΠΕΙΑ ΤΟΥ ΜΗ-ΜΙΚΡΟΚΥΤΤΑΡΙΚΟΥ ΚΑΡΚΙΝΟΥ ΤΟΥ ΠΝΕΥΜΟΝΑ (ΜΜΚΠ) Γράφει ο Δρ Παπαδούρης Σάββας, Παθόλογος-Ογκολόγος   Ο ΜΜΚΠ βρίσκεται αναλογικά στο 80% και πλέον του συνολικού...

Διατρέχουν όντως οι καρκινοπαθείς μεγαλύτερο κίνδυνο λόγω κοροναϊού;

Σε πρακτικό επίπεδο, τα δεδομένα των σχετικών μελετών υποδηλώνουν ότι η χημειοθεραπεία ή οι άλλες αντι-νεοπλασματικές θεραπείες δεν αυξάνουν σημαντικά τον κίνδυνο θνησιμότητας από...

FDA: Η ακτινοβολία των smartphones δεν προκαλεί καρκίνο

Σε μια νέα έκθεσή της, η Υπηρεσία Τροφίμων και Φαρμάκων (FDA) των ΗΠΑ αναφέρει ότι επανεξέτασε τις σχετικές επιστημονικές έρευνες που δημοσιεύθηκαν τα τελευταία...

Νέα ανακάλυψη, νέα ελπίδα για τον καρκίνο

Ένα νεοανακαλυφθέν τμήμα του ανοσοποιητικού μας συστήματος θα μπορούσε να αξιοποιηθεί για την αντιμετώπιση όλων των ειδών καρκίνου, σύμφωνα με επιστήμονες του πανεπιστημίου Cardiff...
- Advertisment -

Ροή Ειδήσεων

Platinum-Based Chemotherapy Versus Capecitabine in Patients With Residual TNBC Following Neoadjuvant Chemotherapy

The ECOG-ACRIN EA1131 study hypothesised that invasive disease-free survival (iDFS) would not be inferior but improved in patients with basal subtype triple-negative breast cancer...

How Does CAR T-Cell Therapy Work in Treating Cancer?

Craig A. Portell, MD, is an Associate Professor of Medicine at the University of Virginia and a member of the UVA Cancer Center in...

Nivolumab-Based Combinations Improve Survival in Advanced Esophageal Cancer

June 17, 2021, by NCI Staff An x-ray of the esophagus and upper gastrointestinal tract following a barium swallow test.  Credit: iStock For some people with advanced...

Wales: 4 in 10 with possible cancer symptoms didn’t contact GP

New figures show 42.1% of people surveyed in Wales who experienced possible cancer symptoms in the first wave of the pandemic didn’t contact their...

Survey Shows Oncologists Underestimate How Many Cancer Patients Use Alternative Therapies

Many cancer patients use alternative or complementary therapies in conjunction with their main course of treatment, but a new survey shows that many oncologists...

Ground-breaking trial pilots new tests to detect lung cancer earlier

Credit: Southampton Clinical Trials Unit The first participants have taken part in a new research trial that aims to save lives by detecting lung cancer...