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10th AOCMP Congress Report - Asia
10th AOCMP Congress Report - Asia

... Therapy”. There were 4 other symposiums dedicated to specific topics including new technologies and their applications in medicine, medical physics education, and certification and licensing of medical physicists. Of special note is there was a new Young Investigator Symposium organized in this conf ...
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... there are several clinical reports demonstrating the feasibility of MR-HIFU for the treatment of brain, breast, bone, liver, and prostate tumors. Pre-clinical testing of endocavity devices shows promise for the treatment of esophageal cancers and potential for cardiac ablation. There is now an incre ...
3.图像设备 (EPID, OBI, CBCT)
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... then shift (x,y,z) to planned patient position, then the light field should align with marked field. --- patient alignment can be further confirmed/fine-tuned using EPID, or CBCT, or KV-pairs. ...
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... radiation therapy treatment planning (3D RTTP) system. Due to this ability, CTsimulators have significantly increased their presence in radiation oncology centers during the past decade. This refresher course: 1) reviews the development of CTsimulation technology and tools; 2) describes the simulati ...
Computed tomography (CT) simulator combines functionality of a
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... radiation therapy treatment planning (3D RTTP) system. Due to this ability, CTsimulators have significantly increased their presence in radiation oncology centers during the past decade. This refresher course: 1) reviews the development of CTsimulation technology and tools; 2) describes the simulati ...
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Hot Topic: Limiting Radiation Exposure in Radiographic Evaluation
Hot Topic: Limiting Radiation Exposure in Radiographic Evaluation

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Medical Physics - University of Waterloo

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Chapter 19 - Diagnostic Imaging
Chapter 19 - Diagnostic Imaging

... B. Mobile Unit – wheel mounted units that can be moved around the hospital C. Stationary Unit – large, powerful units that cannot be moved D. Fluoroscope – presents a continuous moving image; gastrointestinal studies, myelography, heart and vascular studies; rarely seen due to cost ...
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... The specialty of those who treat abnormal body tissue with high doses of x-rays or radionuclides such as cobalt. ...
Radiation Biology 328 2008 Slides - University of Missouri
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... was also noted (p= 0.03). Image quality was not compromised substantively and no conversion from low radiation imaging to standard fluoroscopy was needed in any case due to inadequate visualization ...
Intraoperative imaging with neuromate
Intraoperative imaging with neuromate

... Medtronic O-arm® 2D and 3D imaging device The Medtronic O-arm® intraoperative imaging device, although initially developed for spine surgery, lends itself very well to cranial surgery as well. It provides reduced radiation dose, and increased geometric accuracy compared to a standard CT scanner, at ...
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... body tissue with high doses of x-rays or radionuclides such as cobalt. •Irradiation of cells is used in treating diseases such as cancer ...
Medical Imaging lecture Powerpoint
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... Nuclear Medicine – PET/SPECT • The patient is injected with a radioactive drug that concentrates in diseased tissue • Advantages: – Only imaging method presently capable of performing all types of functional imaging tests – Extremely high contrast between normal and diseased tissue – Fast image ac ...
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... d. Patient air-kerma rate 4. Patient radiation dose reduction a. Patient dose monitoring b. Spectral filtration c. Detector target dose d. Frame rate e. Low, normal, and high dose rate fluoroscopy f. Patient size and projection angle g. Custom programs for pediatric patients 5. New and emerging tech ...
Useful Websites Related to Radiation and Imaging Technology
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... Molecular imaging is a type of medical imaging that provides detailed pictures of what is happening inside the body at the molecular and cellular level that allows physicians to see how the body is functioning and to measure its chemical and biological processes. Learn more: www.DiscoverMI.org (SNMM ...
Stereotactic Radiosurgery Matures Into Mainstream Extracranial
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... Just as Gamma Knife® SRS evolved into a precise, effective method to treat intracranial targets, radiotherapy systems equipped with advanced immobilization and target localization technology have matured to play a frontline role in extracranial SRS. Few examples of this are as striking as the experi ...
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Dental CT scanners and physical quality parameters El

... Background: The use of cone beam computed tomography (CBCT) in dentistry has proven to be useful in the diagnosis and treatment planning of several oral and maxillofacial diseases. The quality of the resulting image is dictated by many factors related to the patient, unit and operator. Materials and ...
X-Rays - LSU School of Medicine
X-Rays - LSU School of Medicine

... • Combines Positron Emission Tomography (PET) and Helical CT • PET detects area of increased metabolic activity as indicated by uptake of radioactive glucose ( by tumor, infection) ...
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Radiosurgery

Radiosurgery is surgery using radiation, that is, the destruction of precisely selected areas of tissue using ionizing radiation rather than excision with a blade. Like other forms of radiation therapy, it is usually used to treat cancer. Radiosurgery was originally defined by the Swedish neurosurgeon Lars Leksell as “a single high dose fraction of radiation, stereotactically directed to an intracranial region of interest”. In stereotactic radiosurgery (SRS), the word stereotactic refers to a three-dimensional coordinate system that enables accurate correlation of a virtual target seen in the patient's diagnostic images with the actual target position in the patient anatomy.Technological improvements in medical imaging and computing have led to increased clinical adoption of stereotactic radiosurgery and have broadened its scope in recent years. Notwithstanding these improvements, the localization accuracy and precision that are implicit in the word “stereotactic” remain of utmost importance for radiosurgical interventions today. Stereotactic accuracy and precision are significantly increased by using a device known as the N-localizer that was invented by the American physician and computer scientist Russell Brown and that has achieved widespread clinical use in several stereotactic surgical and radiosurgical systems.Recently, the original concept of radiosurgery has been expanded to include treatments comprising up to five fractions, and stereotactic radiosurgery has been redefined as a distinct neurosurgical discipline that utilizes externally generated ionizing radiation to inactivate or eradicate defined targets in the head or spine without the need for a surgical incision. Irrespective of the similarities between the concepts of stereotactic radiosurgery and fractionated radiotherapy, and although both treatment modalities are reported to have identical outcomes for certain indications, the intent of both approaches is fundamentally different. The aim of stereotactic radiosurgery is to destroy target tissue while preserving adjacent normal tissue, where fractionated radiotherapy relies on a different sensitivity of the target and the surrounding normal tissue to the total accumulated radiation dose. Historically, the field of fractionated radiotherapy evolved from the original concept of stereotactic radiosurgery following discovery of the principles of radiobiology: repair, reassortment, repopulation, and reoxygenation. Today, both treatment techniques are complementary as tumors that may be resistant to fractionated radiotherapy may respond well to radiosurgery and tumors that are too large or too close to critical organs for safe radiosurgery may be suitable candidates for fractionated radiotherapy.
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