PHOTODYNAMIC THERAPY

Health

Source: compiled by the editor from various references; see credits.

Crosswords: PHOTODYNAMIC THERAPY

Books

• Chemical Aspects of Photodynamic Therapy (Advanced Chemistry Texts) (reference)

• Future Directions and Applications in Photodynamic Therapy (Spie Institutes for Advanced Optical Technolgies, Vol. Is6) (reference)

• Photodynamic Therapy (reference)

  (more book examples)

Source: compiled by the editor from various references; see credits.

Shows photofrin absorbed by cancer cells using photodynamic therapy treatment. Studies show when photophrin ii compound is used in photosensitive drug and is absorbed by cancer cells, the cancer cells could then be destroyed upon illumination of a particular wavelength of laser light. This treatment is known as photodynamic therapy (PDT). Credit: Unknown photographer/artist.

Seen is a "beam of light" traveling along fiber optics for photodynamic therapy for use in an operating room. Its source is a laser beam which is split at two different stages to create the proper "therapeutic wavelength". The patient has been given a photo sensitive drug containing cancer killing substances which are absorbed by cancer cells. During the surgery, the light beam is positioned at the tumor site, which then activates the drug that kills the cancer cells, thus photodynamic therapy. Credit: John Crawford (photographer).

Shown is close up of surgeons' hands in an operating room with a "beam of light" traveling along fiber optics for photodynamic therapy. Its source is a laser beam which is split at two different stages to create the proper "therapeutic wavelength". A patient would be given a photo sensitive drug (photofrin) containing cancer killing substances which are absorbed by cancer cells. During the surgery, the light beam is positioned at the tumor site, which then activates the drug that kills the cancer cells, thus photodynamic therapy (PDT). Credit: John Crawford (photographer).

Photodynamic therapy (PDT) is a procedure to treat cancer. Patients are injected with a photosensitizer which is a light sensitive drug selectively retained by cancer cells. When exposed to laser light, the photosensitizer in the cancer cells produces a toxic reaction which destroys the tumor. This photo shows an argon-ion laser, the first component of the argon pumped-dye laser (630nm red). This argon-ion laser emits blue-green light at 488/514 nm, and is used to excite a dye in the second component, the dye laser head, where the wavelength is changed to 630nm red. Different photosensitizers absorb light at different wavelengths. Some absorb light most efficiently in the blue light region of the spectrum around 400 nanometers(nm) with lesser absorption in the green and red light range. However, red light at 630 nm penetrates deeper into the tumor tissue (3-8 mm) than green or blue light. For this reason, the majority of PDT work has used 630 nm light. See artwork: GA-17. Credit: Unknown photographer/artist.

The photo shows the procedure of photodynamic therapy. In this therapy, patients are injected with a light-activated drug called a photosensitizer which makes cells in their body sensitive to light. The drug is selectively retained by cancer cells as compared with normal tissue. Doctors then use fiber-optic probes to expose the cancer to laser light. This activates the photosensitizer and produces a toxic reaction that destroys the tumor without irreparably damaging the surrounding normal cells There is a close-up of just the hands. See artwork: GA-17. Credit: John Crawford (photographer).

Source: pictures compiled by the editor from various references; see picture credits.

Health

Photodynamic therapy uses drugs that collect in tumor cells and can be turned on or activated by special light. (references)

Scientists have developed a new technique using photodynamic therapy (PDT). With PDT, a physician injects a special dye that is sensitive to bright light into the blood stream. (references)

Source: compiled by the editor from ICON Group International, Inc.; see credits.

Danish

fotodynamisk terapi. (various references)

French

traitement photodynamique, thérapie photodynamique. (various references)

German

photodynamische Therapie. (various references)

Italian

terapia fotodinamica. (various references)

Pig Latin

otodynamicphay erapythay

Spanish

terapia fotodinámica. (various references)

Scrabble® Enable2K-Verified Anagrams

-5 letters: cardiomyopathy.