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Radiation and Medicine

Radiation can be found in many parts of our daily life, from industrial puposes to communication. One major role that radiation plays an important part in would be in the medical field.

remi oyeleye

on 15 January 2013

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Transcript of Radiation and Medicine

Main Idea/Conclusion The first use of radiation to treat disease was on December 24th, 1936 by brothers John and Earnest Lawrence who treated a 28-year-old Leukemia patient using a radioactive isotope of phosphorus-32 produced in John Lawrence' cyclotron.

Although the earlier radiotherapy after this event did not prove to be very effective with diseases such as Leukemia, and other types of cancer, it succeeded in heralding the coming field of radiology Other medical fields requiring radiation You can find radiation used in radiology and radiotherapy, but other medical fields requiring radiation would be... Radiology Symbol Radiotherapy Radiotherapy, also known as Radiation therapy , or radiation oncology, and sometimes abbreviated to XRT, is the medical use of ionizing radiation as part of cancer treatment to control malignant cells. Radiation can be found in many parts of our daily life, from industrial purposes to communication. One major role that radiation plays an important part in would be in the medical field. Radiation & Medicine Radiation's History with Medicine - Teletherapy: irradiating tumors using beams of high-energy radiation
- Brachytherapy: providing a highly localized dose of radiation by one of two methods:
1) the insertion of sealed radioactive sources in the form of rods, wires or
2) through hollow tubes into or close to the tumor, or the patient swallowing a radioactive liquid that is selectively absorbed by the tumor
- Afterloading: having a surgeon place a hollow tube in or close to the tumor. Following the surgery, the tube is then connected to a machine which loads a sealed source of radiation into the tube. Radiology Radiologists use an array of imaging technologies (such as X-ray radiography, ultrasound, computed tomography (CT), nuclear medicine, positron emission tomography (PET) and magnetic resonance imaging (MRI) to diagnose or treat diseases which can be used in Interventional radiology [the performance of (usually minimally invasive) medical procedures with the guidance of imaging technologies.]
The acquisition of medical imaging is usually carried out by the radiographer or radiologist technologist. The radiologist then interprets or "reads" the images and produces a report of their findings and impression or diagnosis in which this report is then transmitted to the ordering physician, either routinely or emergently. Radiology is the medical branch or specialty of medicine that employs the study and application of imaging technologies such as x-rays and radiation to diagnose and treat diseases. Citations/Bibliography http://www.news-medical.net/health/What-is-Radiology.asp http://www.wired.com/science/discoveries/news/2007/12/dayintech_1224 www.rpii.ie/RPII/.../1e877a13-bd36-4184-818b-d51efd63d5e1.pdf http://www.iaea.org/Publications/Booklets/RadPeopleEnv/medical.html There are many parts in radiology...

Projection- or plain radiology in which radiographs are produced by the transmission of X-Rays through a patient to a capture device then converted into an image for diagnosis

Fluoroscopy- this along with angiography are special applications of X-ray imaging, in which a fluorescent screen and image intensifier tube is connected to a closed-circuit television system allowing real-time imaging of structures in motion or augmented with a radiocontrast agent. CT scanning/imaging- X-rays are being used with computing algorithms to show the body.

MRI(or Magnetic Resonance Imaging)- strong magnetic fields are used to align atomic nuclei (usually hydrogen protons) within body tissues, then uses a radio signal to disturb the axis of rotation of these nuclei and observes the radio frequency signal generated as the nuclei return to their baseline states plus all surrounding areas.

Nuclear Medicine- the imaging in nuclear medicine involves the administration of radiopharmaceuticals consisting of substances with affinity to certain body tissues labeled with radioactive tracers into the patient. http://www.news-medical.net/health/What-is-Radiation-Therapy.aspx It can be be used for curative or adjuvant cancer treatment and is "used as palliative treatment (where cure is not possible and the aim is for local disease control or symptomatic relief) or as therapeutic treatment (where the therapy has survival benefit and it can be curative). Total body irradiation (TBI) is a radiotherapy technique used to prepare the body to receive a bone marrow transplant." - Radiotherapy has several applications in non-malignant conditions, but the use of radiotherapy in non-malignant conditions is limited partly by worries about the risk of radiation-induced cancers.

- Radiation therapy is commonly applied to the cancerous tumor.

- To spare normal tissues (such as skin or organs which radiation must
pass through in order to treat the tumor), shaped radiation beams are
aimed from several angles of exposure to intersect at the tumor,
providing a much larger absorbed dose there than in the
surrounding, healthy tissue. "Radiotherapy is used for the treatment of malignant tumors (cancer)... It is also common to combine radiotherapy with surgery, chemotherapy, hormone therapy or some mixture of the three" http://www.news-medical.net/health/Radiation-Therapy-Types.aspx Facts about radiotherapy: Facts about Radiation in Medicine
- X-rays were discovered by Wilhelm Röntgen in 1895 and when first introduced to the public they were thought to be a sure sign of one's death approaching.

- Radioactive materials are for the treatment of a disease or cancer [commonly referred to as therapy, or radiotherapy]

- Radiation is improving and continues to have bigger parts in the medical field though there are some health risks. http://www.radiationanswers.org/radiation-sources-uses/medical-uses.html By: Isabella Palacios & Remi Oyeleye Radiotherapy at its finest In conclusion, we've seen
radiation and it's part in
medicine and the medical field
with well known examples like
radiology and radiotherapy to
little known fields such as brachytherapy and overloading. Radiation has helped with many modern advances. Radiation is being used all over the world to help those at a disadvantage or who are sick. As we continue to discover new ways of helping others we see radiation play a huge part in the world's medical field and with new discoveries come hope for the future. Earnest Lawrence Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles. Modern Radiation Technologies X-Rays- Able to see the skeletal system.
Radiation Therapy- a primary source of treatment for cancers of the head and neck, lungs or bladder. Radiation therapy is often used to treat Hodgkin's disease.
CT Scans- medical imaging tests that are used to discover, treat, and monitor disease. Radiation has advanced over the years. Beginning with its use as a simple leukemia treatment to scanning bones and treating patients with cancer.
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