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Radioisotopes: Finding and Killing Cancer

Radioisotopes: Finding and Killing Cancer. By Maddie P, Rosie M, and Natasha A. Nuclear medicine is a way to diagnose and treat diseases using radioactive substances 11 One of its most common uses it diagnosing and treating cancer 11.

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Radioisotopes: Finding and Killing Cancer

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  1. Radioisotopes: Finding and Killing Cancer By Maddie P, Rosie M, and Natasha A

  2. Nuclear medicine is a way to diagnose and treat diseases using radioactive substances11 One of its most common uses it diagnosing and treating cancer11 It allows doctors to detect problems within the body without having to do invasive surgery11 To diagnose, machines use properties of radioactive elements to create an image of the body11 to treat Cancer doctors uses radiation11 What is Nuclear Medicine?

  3. Cancer is a disease where abnormal cells divide uncontrollably8 There are many different types of cancer8 In some types of cancer, the abnormal cells spread to other parts of the body8 Normal cells divide, and when a cell is old or damaged it dies8 In cancer, the mutated cells keep dividing instead of dying and they create a tumor8 What is Cancer?

  4. http://www.cancer.gov/cancertopics/what-is-cancer

  5. How Cancer is Detected • Doctors give a patient radioisotopes by injection, inhalation, or orally1 • The radioisotopes will spread and gather in certain parts of the body2 • By using PET, SPECT, gamma cameras, bone scanners, and other machines an image of the body can be created based on the properties of the radioactive element and where it is gathering in the body9 • These machines sense the gamma rays(energy) which are being given off3

  6. How Cancer is Detected http://www.scq.ubc.ca/wp-content/uploads/2006/08/PET-scan.jpg • Doctors choose different isotopes depending of where they think the cancer is2 • Some isotopes would not have an effect in certain parts of the body2 PET Scans http://www.petimagingflorida.com/images/pet_scan.jpg.

  7. Common Radioisotopes Used to Detect Cancer1

  8. Nuclear Decay Equations! • 3215P 3216S+0-1e • 6831Ga 6830Zn+0-1e

  9. Treating Cancer • Once the cancer has been found it is treated using radiation3 • The radiation damages the cancer cells when it gives of large amounts of energy4 • Radiation is not harmful to the patient because • The radioisotopes used have a short half life, so the patient is not affected for very long5 • It is minimally invasive11 • Healthy cells are less affected by the radiation then the cancer cells are5

  10. Treating Cancer • Radioisotopes damages rapidly dividing cancer cells because they are sensitive to and easily damaged by radiation3 http://ccmb.marshillgroup.com/resource/Image/medical%20physics/Isocentric_Tx.jpg

  11. Different Types of Radiation • Skin Cancer is treated using External Beam Radiation Therapy (Teletherapy)10 • This type of radiation uses low energy radiation and focuses it on the cancer10 • The machines used areorthovoltage x-ray machines, Cobalt-60 machines, linear accelerators, proton beam machines, and neutron beam machines12 • Cancers in the eye, head, neck, and uterus are treated using Internal Radiation Therapy (Brachytherapy)13 • In Brachytherapy radiation is placed close to the cancer in a seed, wire, or rod13 • This can be used with Teletherapy to give an extra boost of radiation to the large mass of cancer cells13

  12. During Cancer Treatment • During treatment doctors use machines like gamma cameras to make sure the cancer is regressing • Radioactive tracers like Copper-64, Iodine-124, and Flourine-18 are used to trace the cancer • During these procedures the size and shape of the cancer can be determined • If the cancer is not regressing doctors know that they must try a different type of radiation

  13. Disadvantages to Nuclear Medicine • Healthy cells that reproduce rapidly, like hair, can be killed during radiation. This causes hair to fall out5 • It is very expensive7 • The radioisotopes can be dangerous to handle and dispose of7 • The procedures must be fast because the radioisotopes have a short half life7 • Pregnant women can not be treated • Allergic reactions can occur7 • Radiation can not treat all cancers because sometimes it needs to be combined with surgery or chemotherapy7 http://frenchquarterradiationfreecom/img/dangerrads.

  14. Common Radioisotopes in Treating Cancer1 Cesium-137, and Cobalt-60 are used to destroy other types of cancer

  15. More Nuclear Decay Equations! • 9943Tc 9944Ru+0-1e • 16667Ho 16668Er+0-1e • 13153I 13154Xe+0-1ee

  16. Bibliography 1Sterling, Toby. "European shortage of isotope used to detect cancer - International Business Times - ." International Business News | Online Business News - International Business Times. 8 Sep. 2005. 31 Oct. 2008 http://www.northland.cc.mn.us/biology/Biology1111/Bioreadings/radioisotopes.htm 2Boyd, Rex. "Radioisotopes in Medicine." Radioisotopes in Medicine: WNA. 8 Oct. 1931 <ihttp://www.world-nuclear.org/info/inf55.html>. 3Bergman, David L. "Radioisotopes: Frequently Asked Questions." RADIOCHEMISTRY SOCIETY - Specialized Courses in Radiochemistry. 31 Oct. 2008 <http://www.radiochemistry.org/nuclear 4"Radioactive Sealed Source Management | Radiation Protection | US EPA." U.S. Environmental Protection Agency. 8 Sep. 1930. 31 Oct. 2008 5Boyd, Rex. "Radioisotopes in Medicine." Radioisotopes in Medicine: WNA. 8 Oct. 1931 <ihttp://www.world-nuclear.org/info/inf55.html 6Galik, Rich. "CCMR - Ask A Scientist!." Cornell Center for Materials Research. 21 Nov. 2008. 31 Oct. 2008 <http://www.ccmr.cornell.edu/education/ask/index.html?quid=1073 7Commitee, (American College Of Radiology. "Positron Emission Tomography – Computed Tomography (PET/CT) Scanning." Radioology Info. 16 Sep. 2008. 31 Oct. 2008 <www.radiologyinfo.org/en/pdf/PET.pdf

  17. More Bibliography 8Specialist, Nci. "What Is Cancer? - National Cancer Institute." Comprehensive Cancer Information - National Cancer Institute. 8 Apr. 2008. 31 Oct. 2008 <http://www.cancer.gov/cancertopics/what-is-cancer 9Alteri, Rick. "ACS :: Cancer Facts & Figures 2008." American Cancer Society :: Information and Resources for Cancer: Breast, Colon, Prostate, Lung and Other Forms. 31 Oct. 2008 <http://www.cancer.org/docroot/STT/content/STT_1x_Cancer_Facts_and_Figures_2008.asp?from=fast>.10Publications, Nci. "Leukemia Home Page - National Cancer Institute." Comprehensive Cancer Information - National Cancer Institute. 30 Mar. 2003. 31 Oct. 2008 <http://www.cancer.gov/cancertopics/wyntk/leukemia 11Freudenrich, Craig C. . "HowStuffWorks "How Nuclear Medicine Works"." HowStuffWorks - Learn How Everything Works!. 18 Oct. 2000. 31 Oct. 2008 <http://www.howstuffworks.com/nuclear-medicine1.htm 12Commitee, (American College Of Radiology. "Positron Emission Tomography – Computed Tomography (PET/CT) Scanning." Radioology Info. 16 Sep. 2008. 31 Oct. 2008 <www.radiologyinfo.org/en/pdf/PET.pdf13Specialist, Nci. "Melanoma Home Page - National Cancer Institute." Comprehensive Cancer Information - National Cancer Institute. 31 Mar. 2003. 31 Oct. 2008 <http://www.cancer.gov/cancertopics/wyntk/melanoma14Usa, American Cancer Society. "Cancer Screening Overview - National Cancer Institute." Comprehensive Cancer Information - National Cancer Institute. 10 Apr. 2008. 31 Oct. 2008<http://www.cancer.gov/cancertopics/pdq/screening/overview/healthprofessional

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