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| | Radiation therapy - Wikipedia, the free encyclopedia |
 | | Radiotherapy has a few applications in non-malignant conditions, such as the treatment of severe thyroid eye disease, pterygium, prevention of keloid scar growth, and prevention of heterotopic bone formation. | | | The use of radiotherapy in non-malignant conditions is limited partly by worries about the risk of radiation-induced cancers. | | | The differences relate to the position of the radiation source; external is outside the body, while sealed and unsealed source radiotherapy has radioactive material delivered internally. |
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http://en.wikipedia.org/wiki/Radiotherapy
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| | [No title] |
| | During the implantation or insertion procedure, the location of the source may be inferred to be proximal to the tip of the needle or other device used for the procedure. | | | Commonly, these radioactive sources, for example seeds, are inserted by means of a needle device while an external depth gauge is employed with the patient in the dorsal lithotomy position. | | | The choice of radioisotope and type of source, plus the method of treatment used, depends in part on the condition to be treated. |
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http://www.wipo.int/cgi-pct/guest/getbykey5?KEY=01/87418.011122&ELEMENT_SET=DECL
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| | [No title] |
| | Is in the active practice of therapeutic radiology, and has completed 200 hours of instruction in basic radionuclide techniques applicable to the use of a sealed source in a teletherapy unit, 500 hours of supervised work experience, and a minimum of 3 years of supervised clinical experience. | | | Is in the active practice of therapeutic radiology, has completed 200 hours of instruction in basic radionuclide handling techniques applicable to the therapeutic use of brachytherapy sources and 500 hours of supervised work experience and a minimum of three years of supervised clinical experience. | | | "Brachytherapy" means a method of radiation therapy in which sealed sources are utilized to deliver a radiation dose at a distance of up to a few centimeters, by surface, intracavitary, or interstitial application. |
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http://www.dhss.delaware.gov/dhss/dph/hsp/files/2002radcontregsprtg.txt
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| | Implantable radiotherapy device - Patent 6030333 |
| | The radiotherapy device of the present invention thus comprises a general purpose, unitary, sealed-source radiation delivery device which is suitable for use in the radiation treatment of tumors and other radiation-sensitive lesions which may require a complex or individualized pattern of radiation for effective treatment. | | | A radiotherapy device according to claim 1, wherein said device is adapted for temporary or removable implantation in a patient. | | | A radiotherapy device according to claim 20, wherein said device is adapted for temporary or removable implantation in a patient. |
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http://www.freepatentsonline.com:9003/6030333.html
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| | Radiation source - Patent 6053858 |
| | During implantation, the radiation source might be required to travel through tortuous pathways within a patient's body, such as the coronary arteries. | | | An alternate method of treating a patient, which is within the scope of the present invention, includes providing the radiation source, sealing the radiation source within a water tight capsule, and implanting the capsule into the patient's body. | | | One form of radiation treatment involves the insertion of a radiation source into a patient's body to irradiate a limited area of the body for a controlled period of time. |
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http://www.freepatentsonline.com:9003/6053858.html
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| | National Cancer Institute - Dictionary of Cancer Terms |
| | Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy, implant radiation, or brachytherapy). | | | Radioactive iodine is also used in internal radiation therapy for prostate cancer, intraocular (eye) melanoma, and carcinoid tumors. |
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http://www.cancer.gov/dictionary/db_alpha.aspx?expand=r
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| | Physics Today On The Web - Cover Story |
| | In this article, we focus on the three applications of radionuclide therapy that are receiving the most attention—namely, prostate seed therapy, intravascular therapy, and therapeutic radiopharmaceuticals. | | | The three classes of therapeutic radionuclides that we have focused on here—sealed sources for prostate therapy, sources for intravascular therapy, and radiopharmaceutical therapies—are poised for rapid growth over the next few years. | | | Neutron-beam therapy using reactors and cyclotrons still finds some applications, but radionuclide sources of neutrons are also under investigation, particularly for use in sealed sources. |
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http://www.aip.org/pt/apr00/coursey.html
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| | National Cancer Institute - Radiation Therapy for Cancer: Q & A |
| | Clinical trials are under way to study the effectiveness of stereotactic radiosurgery and stereotactic radiotherapy alone and in combination with other types of radiation therapy. | | | The energy (source of radiation) used in external radiation therapy may come from the following: | | | What are the sources of energy for external radiation therapy? |
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http://www.cancer.gov/cancertopics/factsheet/Therapy/radiation
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| | Sealed source radiotherapy |
| | Sealed source radiotherapy or brachytherapy is the application of radiation from close range and is used for techniques where the radioactive source is placed inside the area requiring treatment. | | | Superficial tumours can be treated using sealed sources placed close to the skin. | | | The most common applications of this method are gynaecological in nature, although it can also be performed on the nasopharynx. |
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http://www.sciencedaily.com/encyclopedia/sealed_source_radiotherapy
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| | medical physics: Information From Answers.com |
| | A medical physics department may be based in either a hospital or a university and its work is likely to include research, technical development and clinical healthcare. | | | It generally concerns physics as applied to medical imaging and radiotherapy, although medical physicists also work in many other areas of healthcare. |
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http://www.answers.com/topic/medical-physics
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| | Public Health - May Bulletin |
| | (58) "Leakage Technique Factors" means the technique factors associated with the diagnostic or therapeutic source assembly which are used in measuring leakage radiation. | | | (4) X-ray systems subject to OAR 333-106-0301(1) shall not be utilized in procedures where the source to patient distance is less than 30 centimeters. | | | (57) "Leakage Radiation" means radiation emanating from the diagnostic or therapeutic source assembly except for: |
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http://www.sos.state.or.us/archives/rules/0505_Bulletin/0505_ch333_bulletin.html
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| | Coronary Radiation Studies |
| | However, experimental and clinical research has identified two major complications of this approach: stenosis at the ends of the radiation zone ('edge effect' or 'candywrapper') as well as late thrombosis (beyond 30 days after intervention) of the angioplasty or stent site. | | | Intracoronary radiotherapy for prevention of restenosis after percutaneous coronary interventions. | | | CONCLUSIONS: beta-Radiation with a 90-yttrium source used as adjunct therapy for patients with ISR results in a lower-than-expected rate of angiographic and clinical restenosis |
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http://www.aboutcancer.com/heart2.htm
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| | PA Bulletin, Doc. No. 03-1731a |
| | (d) Subsections (b) and (c) notwithstanding human use of radiation sources is permitted by individuals enrolled in clinical training programs approved by the Department. | | | (b) Only auxiliary personnel who have met the applicable radiologic requirements of 49 Pa. Code, Part I, Subpart A (relating to professional and occupational affairs) may use radiation sources in the healing arts when employed by a licensed practitioner of the healing arts at the location at which the licensed practitioner practices. | | | For the purpose of this requirement, facilities that utilize two or more modalities in which patients are likely to receive, or will receive a dose to an organ in excess of 200 rads (2.0 gray), shall have a radiation safety committee. |
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http://www.pabulletin.com/secure/data/vol33/33-35/1731a.html
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| | Bone Marrow Transplantation (BMT) - Sealed source radiotherapy - The Doctors Lounge(TM) |
| | The technique is referred as a bone marrow harvest and is performed with general anesthesia because literally hundreds of insertions of the needle are required to obtain sufficient material. | | | Acute GVHD is defined as that which occurs in the first 3 months after transplantation and may involve the skin, intestine, or the liver. | | | In addition to inflammation, chronic GVHD may lead to the development of fibrosis, or scar tissue, similar to scleroderma or other autoimmune diseases and may cause functional disability, and the need for prolonged immunosuppressive medications. |
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http://www.thedoctorslounge.net/oncology/procedures/bmt.htm
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| | [No title] |
| | Radionuclides used in health care are usually conditioned in unsealed (or open) sources or sealed sources. | | | Unsealed sources are usually liquids that are applied directly and not encapsulated during use; sealed sources are radioactive substances contained in parts of equipment or apparatus or encapsulated in unbreakable or impervious objects such as seeds or needles. | | | certain sealed sources from diagnostic instruments, may cause much more severe injuries (such as destruction of tissue, necessitating amputation of body parts) and should therefore be undertaken with the utmost care. |
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http://www.toxicslink.org/docs/06014_Beware_Of_These_Radiations.doc
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| | Radiotherapy |
| | Careful planning of the beam size and shielding of surrounding tissue, ensuring that radiation fields give effective tumour eradication with an acceptable level of toxicity, is, therefore, a prerequisite of successful therapy. | | | Sources sealed in tubes may also be placed in the vagina or rectum to treat cancers of the vagina, cervix, lower uterus, rectum or anus. | | | Therefore, there can be a lag-time (days, weeks or even months) between therapy and the full effects of the treatment becoming manifest. |
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http://www.cancerline.com/cancerlinehcp/9898_11025_3_5_1.aspx
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| | Viewing Section 16.122 - Teletherapy |
| | (ii) With the teletherapy source in the "on" position with the largest clinically available treatment field and with a scattering phantom in the primary beam of radiation, that: | | | The report must also describe any radiation exposure to individuals that occurred as a result of the malfunction. | | | (6) A licensee shall ensure that either a physician named on the radioactive material license, or a licensed radiotherapy technologist shall observe the patient continuously during each treatment. |
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http://w3.health.state.ny.us/dbspace/NYCRR10.nsf/0/8525652c00680c3e852565300064acf8?OpenDocument
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| | Amazon.ca: Books: Radiotherapy Physics and Equipment |
| | Presents academic principles behind modern radiotherapy equipment and treatments. | | | Look for books like Radiotherapy Physics and Equipment by subject: | | | A comprehensive and current review of selected radiotherapy treatment units. |
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http://www.amazon.ca/exec/obidos/ASIN/0443062110
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| | ORSS website |
| | Section 5.6 Administration of Sealed Sources for Therapy | | | Section 5.7 Safety Requirements with Patients Containing Sealed Sources | | | 5.6 (j) Procedures following administration of sealed sources |
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http://www.umdnj.edu/orssweb/policymanual1.html
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| | [No title] |
| | According to police sources, medical examination of the body revealed that the man had died due to an illness. | | | Brachytherapy involving treatment of malignant diseases by irradiation with small sealed source applied in close proximity to the tumour forms an important branch of radiotherapy. | | | CHENNAI: Paterson Cancer Center, on the premises of Vijaya Health Centre, has launched micro-selectron high dose rate brachytherapy to augment radiotherapy services for cancer patients. |
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http://www.hinduonnet.com/thehindu/thscrip/print.pl?file=2005042504250400.htm&date=2005/04/25/&prd=th&
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| | EPA Registration of sealed source devices |
| | The owner can use the sealed source device, but only if the owner is a natural person, such as a sole trader and has a licence to use the device. | | | Sealed source devices must be permanently and durably marked (for example, by engraving) with a unique identifying number, such as the device serial number, the registration number of the sealed source device issued by the EPA or an asset number issued by the organisation that owns it. | | | Owners of sealed source devices, other than fixed radiation gauges, need only register the sealed source device and comply with the conditions of registration. |
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http://www.epa.nsw.gov.au/radiation/ssdevices.htm
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| | Medical Dictionary - SEALED SOURCE |
| | This term is applied to small containers (tubes or needles) containing radioactive material which can be inserted into tumours, or applied to the surface, to provide localized radiotherapy. | | | Such devices are found in the radiotherapy or oncology department. | | | Content and Design Copyright 2000 Dr. Malcolm C Brown. |
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http://www.sweb.cz/kemike/medic/entries/SEALED_SOURCE.html
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| | Information Bridge: DOE Scientific and Technical Information |
| | The characterization of a sealed source is essentially a function of the type of radiation it emits, the principal use for which it is applied, and the activity it contains. | | | The types of radiation of most interest to the GTCC LLW Program are gamma rays and neutrons, since these are emitted by the highest activity sources. | | | The U.S. Department of Energy is responsible for disposing of this class of low-level radioactive waste. |
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http://www.osti.gov/bridge/product.biblio.jsp?osti_id=806695
(337 words)
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| | [No title] |
| | Radioactive Sealed Sources and Devices (USNRC's Device Registry) | | | Radioactive Products and Other Sources of Radiation (courtesy of Black Cat Systems) | | | Safety and Health Topics: Ionizing Radiation (courtesy of OSHA) |
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http://www.iem-inc.com/linkradr.html
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| | Dictionary sealed |
| | , certain -- established irrevocably; "his fate is sealed" | | | -- closed or secured with or as if with a seal; "my lips are sealed"; "the package is still sealed"; "the premises are sealed" | | | -- undisclosed for the time being; "sealed orders"; "a sealed move in chess" |
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http://www.dictionarydefinition.net/sealed.html
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| | Dictionary seal |
| | , sealskin -- the pelt or fur (especially the underfur) of a seal; "a coat of seal" | | | -- a stamp affixed to a document (as to attest to its authenticity or to seal it); "the warrant bore the sheriff's seal" | | | , seal off -- make tight; secure against leakage; "seal the windows" |
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http://www.dictionarydefinition.net/seal.html
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| | Section |
| | 35.57, the licensee shall require the authorized user of a sealed source listed in Sec. |
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http://a257.g.akamaitech.net/7/257/2422/12feb20041500/edocket.access.gpo.gov/cfr_2004/janqtr/10cfr35.960.htm
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| | NEJM -- Localized Intracoronary Gamma-Radiation Therapy to Inhibit the Recurrence of Restenosis after Stenting |
| | intracoronary ribbon containing a sealed source of iridium-192, | | | Metzdorff, M. T., Sapirstein, W., Zuckerman, B., Dillard, J., Eisenberg, M. J., Sheppard, R., Leon, M. B., Teirstein, P. S., Moses, J. Intracoronary Radiotherapy for Restenosis. | | | Sheppard, R., Eisenberg, M. Intracoronary Radiotherapy for Restenosis. |
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http://content.nejm.org/cgi/content/abstract/344/4/250
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| | þÿÿÿ
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http://engphys.mcmaster.ca/~unene/un805/assign1/Assignment1.doc
(448 words)
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