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13 Definition of Target Volume and Organs at Risk. Biological Target
13 Definition of Target Volume and Organs at Risk. Biological Target

... patient’s history; the anatomy of the region to be irradiated; and the acceptance of the patient concerning radiation treatment. But also the technique used for irradiation, including the patient’s positioning and fixation, are of major importance. As a consequence, the complexity of the process when ...
Clinical Performance of a Spatiotemporally Accelerated Motion
Clinical Performance of a Spatiotemporally Accelerated Motion

... Purpose: Contrast-enhanced MR Angiography (CE-MRA) is ideal for pediatric abdominal vascular imaging due to the lack of ionizing radiation. However, pediatric CE-MRA is usually limited by motion and compromised spatiotemporal resolution. General anesthesia (GA) with periods of suspended respiration ...
bisecting angle technique.
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... Radiology in Pediatric Dentistry ...
Radioactive seed localization
Radioactive seed localization

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The American College of Radiology Accreditation Overview
The American College of Radiology Accreditation Overview

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9 Three-Dimensional Treatment Planning and Conformal Therapy
9 Three-Dimensional Treatment Planning and Conformal Therapy

... (Purdy 1996a). Modern anatomic imaging technologies, such as X-ray computed tomography (CT) and magnetic resonance imaging (MRI), provide a fully 3D model of the cancer patient’s anatomy, which is often complemented with functional imaging, such as positron emission tomography (PET) or magnetic reso ...
What are my Screening Options if I have Dense Breasts?
What are my Screening Options if I have Dense Breasts?

... mammogram to ‘see’ cancer decreases. Having dense breasts is the strongest predictor of cancer being missed by mammography. Digital mammography performs better in dense breasts than analog mammography. Tomosynthesis or 3D mammography is a newer form of x-ray and significantly reduces patient call-ba ...
VARiAn TRUeBeAm RepLACes LineAR ACCeLeRAToR AT UCLA
VARiAn TRUeBeAm RepLACes LineAR ACCeLeRAToR AT UCLA

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Brain scanning techniques (CT, MRI, fMRI, PET, SPECT, DTI, DOT)
Brain scanning techniques (CT, MRI, fMRI, PET, SPECT, DTI, DOT)

... identified in relation to epilepsy, where surgery is considered.14,15 Undertaking this procedure is painless and harmless, but the patient will have to remain still for about half an hour, whilst the images are processed. Diffusion tensor imaging is a relatively new technique and consequently, there ...
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... MR-guidance could play a major role in the focal ablative treatment of bone involvement from these entities. Imaging is used in five separate and distinct ways: planning, targeting, monitoring, controlling, and assessing treatment response [1]. In all of these cases, placing a needle at a precise lo ...
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... CT is less sensitive to patient movement than MRI. CT can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides real-time imaging, making it a good tool for guiding minimally invasive procedures such as needle biopsies and needle aspirations of many areas ...
Inclusion of the dose from kilovoltage cone beam CT in the radiation
Inclusion of the dose from kilovoltage cone beam CT in the radiation

... Purpose: Cone beam CT is increasingly being used for daily patient positioning verification during radiation therapy treatments. The daily use of CBCT could lead to accumulated patient doses higher than the older technique of weekly portal imaging. There have been several studies focusing on measure ...
2011 SCope of Practice Document_June_2011_FINAL
2011 SCope of Practice Document_June_2011_FINAL

... MD, Danny Basso, AS, CNMT, NCT, FSNMTS; Jeanne Dial, MEd, CNMT; David Gilmore, MS, CNMT, NCT, RT(N,R). FSNMTS; Marcia Hess- Smith, BS, CNMT; Sara Johnson, MBA, CNMT,NCT; Brenda King, CNMT, FSNMTS; Cindi LuckettGilbert, MHA, CNMT, PET,RT (N), FSNMTS; Lyn Mehlberg, BS, CNMT, FSNMTS; Frances Neagley, B ...
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MR260 Medical Transcription II Week 9

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Refresher Training for X-Ray Equipment Operators

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Multimodality image integration for radiotherapy - DIE

... multileaf collimators, virtual simulation or 3D planning. These systems take into account not only criteria based on dose limits, but also biological indexes. Computer controlled automation of multileaf collimators is the basis of this new radiotherapy treatment approach, which already appears as th ...
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ST HELENS + KNOWSLEY NHS TEACHING HOSPITAL TRUST
ST HELENS + KNOWSLEY NHS TEACHING HOSPITAL TRUST

... The RPA must provide a formal training course for at least two people on an annual basis to enable key staff to be able to fulfil the requirements of the Radiation Protection Supervisor role, and also regular updates for these staff. There is also a need to provide training in the safe use of medica ...
Royal Australian and New Zealand College of Radiologists
Royal Australian and New Zealand College of Radiologists

... The Royal Australian and New Zealand College of Radiologists (RANZCR) is the leading professional organisation for the promotion of the sciences and practice of the medical specialities of Radiology (Diagnostic and Interventional) and Radiation Oncology in Australia and New Zealand. Radiologists are ...
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Image-guided radiation therapy

Image-guided radiation therapy (IGRT) is the process of frequent two and three-dimensional imaging, during a course of radiation treatment, used to direct radiation therapy utilizing the imaging coordinates of the actual radiation treatment plan. The patient is localized in the treatment room in the same position as planned from the reference imaging dataset. An example of IGRT would include localization of a cone beam computed tomography (CBCT) dataset with the planning computed tomography (CT) dataset from planning. IGRT would also include matching planar kilovoltage (kV) radiographs or megavoltage (MV) images with digital reconstructed radiographs (DRRs) from the planning CT. These two methods comprise the bulk of IGRT strategies currently employed circa 2013.This process is distinct from the use of imaging to delineate targets and organs in the planning process of radiation therapy. However, there is clearly a connection between the imaging processes as IGRT relies directly on the imaging modalities from planning as the reference coordinates for localizing the patient. The variety of medical imaging technologies used in planning includes x-ray computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) among others. The precision of IGRT is significantly improved when N-localizer technology is used in conjunction with these medical imaging technologies. Through advancements in imaging technology, combined with a further understanding of human biology at the molecular level, the impact of IGRT on radiotherapy treatment continues to evolve.
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