Introducing Radiology Select: Radiation Dose and Dose Reduction
... for aid in accurately diagnosing disease or injury and guiding therapy, the collective radiation dose delivered to the U.S. population from medical imaging has increased six-fold since the 1980s (1,2). This has resulted in substantial concern from physicians, patients, and regulators. Consequently, ...
... for aid in accurately diagnosing disease or injury and guiding therapy, the collective radiation dose delivered to the U.S. population from medical imaging has increased six-fold since the 1980s (1,2). This has resulted in substantial concern from physicians, patients, and regulators. Consequently, ...
Refresher Training for X-Ray Equipment Operators
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode ...
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode ...
Appraisal of Radiation Dose Received in Abdominal Computed
... Hospital “A” and [6.57 + 2.38] from the Hospital “B”. As comparison the results with NRPB and UNSCEAR, the effective dose from CT examinations were in general relatively high, typically 1- 30 mSv. These doses can often approach or exceed levels known to increase the probability of cancer. More than ...
... Hospital “A” and [6.57 + 2.38] from the Hospital “B”. As comparison the results with NRPB and UNSCEAR, the effective dose from CT examinations were in general relatively high, typically 1- 30 mSv. These doses can often approach or exceed levels known to increase the probability of cancer. More than ...
Medical Imaging Research - Dartmouth
... Research Director. The program utilizes the research labs at NCCC’s Rubin and Borwell facilities, which include a variety of spectrographic and other imaging equipment, as well as the Brain Imaging Laboratory¸ where our faculty has participated in fMRI neuroimaging research. Thayer School of Enginee ...
... Research Director. The program utilizes the research labs at NCCC’s Rubin and Borwell facilities, which include a variety of spectrographic and other imaging equipment, as well as the Brain Imaging Laboratory¸ where our faculty has participated in fMRI neuroimaging research. Thayer School of Enginee ...
190047_190047 - espace@Curtin
... number of CT examinations performed over the last decade increased by between two-fold and sevenfold2, 3. During its infancy while CT was recognised as a relatively high radiation dose procedure there was appreciable clinical justification for using it. Initially no other modality could compete with ...
... number of CT examinations performed over the last decade increased by between two-fold and sevenfold2, 3. During its infancy while CT was recognised as a relatively high radiation dose procedure there was appreciable clinical justification for using it. Initially no other modality could compete with ...
Staging Moments Head and Neck Case 3
... Clinical Staging • Rationale for staging choices – T1b s for solitary tumor >1 <2cm limited to thyroid – N0 because nodes were clinically negative on physical exam and imaging – M0 because there was nothing to suggest distant metastases; if there was, appropriate tests would be performed before deve ...
... Clinical Staging • Rationale for staging choices – T1b s for solitary tumor >1 <2cm limited to thyroid – N0 because nodes were clinically negative on physical exam and imaging – M0 because there was nothing to suggest distant metastases; if there was, appropriate tests would be performed before deve ...
ACR-SPR Practice Parameter for the Performance of Computed
... during free breathing for certain indications, such as radiation therapy planning. B. The primary goal of CT scanning is to obtain diagnostic information from images of sufficient quality from the task. Protocols should be optimized to give the lowest dose required to achieve appropriate image quali ...
... during free breathing for certain indications, such as radiation therapy planning. B. The primary goal of CT scanning is to obtain diagnostic information from images of sufficient quality from the task. Protocols should be optimized to give the lowest dose required to achieve appropriate image quali ...
click her - Universal Consultants, Inc.
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode ...
... Basic Components of X-ray Tube • Cathode – heated wire to produce large source of electrons and focusing cup to direct them • Anode – target of high atomic number struck by electrons to produce X-rays • Voltage supply – high voltage supply to accelerate electrons from cathode to anode ...
New Approaches to the Diagnosis of Pulmonary
... (PE) is recognized as the third most common cause of cardiovascular disease in the United States after ischemic heart disease and stroke.1 Autopsy studies suggest that more than 600,000 patients in the United States develop PE each year and that this entity causes or contributes to death in approxim ...
... (PE) is recognized as the third most common cause of cardiovascular disease in the United States after ischemic heart disease and stroke.1 Autopsy studies suggest that more than 600,000 patients in the United States develop PE each year and that this entity causes or contributes to death in approxim ...
BSc (Med) (Hons) Medical Physics at UCT - UCT Law
... Only students who receive a duly performed (DP) certificate, normally issued around 15 October, will be allowed to write the examination. The DP certificate criteria will be published at the start of the course, and may include, inter alia, satisfactory performance in class tests, examinations writt ...
... Only students who receive a duly performed (DP) certificate, normally issued around 15 October, will be allowed to write the examination. The DP certificate criteria will be published at the start of the course, and may include, inter alia, satisfactory performance in class tests, examinations writt ...
Full Text
... This article summarizes the proceedings of a portion of the Radiation Dose Summit, which was organized by the National Institute of Biomedical Imaging and Bioengineering and held in Bethesda, Maryland, in February 2011. The current understandings of ways to optimize the benefit-risk ratio of compute ...
... This article summarizes the proceedings of a portion of the Radiation Dose Summit, which was organized by the National Institute of Biomedical Imaging and Bioengineering and held in Bethesda, Maryland, in February 2011. The current understandings of ways to optimize the benefit-risk ratio of compute ...
Hepatology Curriculum
... to manage the broad spectrum of liver-related problems encountered in a typical gastroenterology practice. Level 1 training is designed to prepare an individual to develop clinical and/or research expertise in hepatology. To obtain the core knowledge required for level 1 training, trainees will be r ...
... to manage the broad spectrum of liver-related problems encountered in a typical gastroenterology practice. Level 1 training is designed to prepare an individual to develop clinical and/or research expertise in hepatology. To obtain the core knowledge required for level 1 training, trainees will be r ...
Radiology - Network Learning Institute
... Interpretation of special testing Tumor localization Treatment volume determination Treatment time/dosage determination Choice of treatment modality Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
... Interpretation of special testing Tumor localization Treatment volume determination Treatment time/dosage determination Choice of treatment modality Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
Ch17-Radiology2
... Tumor localization Treatment volume determination Treatment time/dosage determination Choice of treatment modality Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
... Tumor localization Treatment volume determination Treatment time/dosage determination Choice of treatment modality Determination of number and size of treatment ports Selection of appropriate treatment devices Other procedures Radiology ...
MICROWAVE THERMOGRAPHY FOR CANCER DETECTION
... radiation from usual methods: mamography, method with radiation risk and unconfortable for patient. Globally there are a lot of campaigns against mamography because of the reasons mentioned. One of the methods complementary to mamography is represented by early breast cancer detection using microwav ...
... radiation from usual methods: mamography, method with radiation risk and unconfortable for patient. Globally there are a lot of campaigns against mamography because of the reasons mentioned. One of the methods complementary to mamography is represented by early breast cancer detection using microwav ...
Canadian Association of Radiologists Radiation Protection Working
... the radiation from the examinations is different, their risks can be compared by using effective dose calculations; in this case, the CT examination has 2-3 times more risk than the nuclear medicine examination. By using the E, we can estimate the risk of fatal cancer induction for a reference subje ...
... the radiation from the examinations is different, their risks can be compared by using effective dose calculations; in this case, the CT examination has 2-3 times more risk than the nuclear medicine examination. By using the E, we can estimate the risk of fatal cancer induction for a reference subje ...
IV FD-CTA - Rackcdn.com
... Angiography (DSA) as Gold Standard Patro, S. MD, Almansoori, T. MD, Lum, C, MD., Thornhill, R. PhD, Iancu, D. MD Interventional Neuroradiology Section, Diagnostic Imaging Department, The Ottawa Hospital, University of Ottawa, Ottawa, Canada ...
... Angiography (DSA) as Gold Standard Patro, S. MD, Almansoori, T. MD, Lum, C, MD., Thornhill, R. PhD, Iancu, D. MD Interventional Neuroradiology Section, Diagnostic Imaging Department, The Ottawa Hospital, University of Ottawa, Ottawa, Canada ...
Considerations Regarding Radiation Exposure in
... Careful selection of patients to be imaged should be a priority of the radiologist/nuclear medicine physician and the referring physician in order to avoid unnecessary repeated exposure. Risk-benefit ratios of whole body PETCT must be carefully evaluated before each study is ordered. This is especia ...
... Careful selection of patients to be imaged should be a priority of the radiologist/nuclear medicine physician and the referring physician in order to avoid unnecessary repeated exposure. Risk-benefit ratios of whole body PETCT must be carefully evaluated before each study is ordered. This is especia ...
Comparison of standardized uptake values obtained from two
... statistical difference in FBG levels between these two groups (P = 0.295 for 2D; P = 0.301 for 3D). An average standard dose of 18F-FDG 539.82±75.68 MBq (14.58±2.04 mCi) was administered intravenously from a cannula placed on the antecubital vein or dorsum of hand. After injection, patients rested i ...
... statistical difference in FBG levels between these two groups (P = 0.295 for 2D; P = 0.301 for 3D). An average standard dose of 18F-FDG 539.82±75.68 MBq (14.58±2.04 mCi) was administered intravenously from a cannula placed on the antecubital vein or dorsum of hand. After injection, patients rested i ...
ACR–ASTRO Practice Parameter for Image
... [1,2]. In the very specialized case of stereotactic body radiation therapy (SBRT) or stereotactic ablative radiotherapy (SABR) [3], IGRT is considered a necessary and integral component of the entire procedure. Nevertheless, accurate radiation therapy is important even for simple treatments. A broad ...
... [1,2]. In the very specialized case of stereotactic body radiation therapy (SBRT) or stereotactic ablative radiotherapy (SABR) [3], IGRT is considered a necessary and integral component of the entire procedure. Nevertheless, accurate radiation therapy is important even for simple treatments. A broad ...
CT Dose
... Other considerations Other considerations Tendency to cover more volume (anatomy) Better availability of equipment ...
... Other considerations Other considerations Tendency to cover more volume (anatomy) Better availability of equipment ...
1) Radiation Protection - NHS Scotland Recruitment
... 1.8. Assist in the development of quality assurance programmes for Imaging and radiation protection equipment and train junior staff in these techniques. 1.9. Perform dosimetric calculations for all studies submitted to NHS Tayside through the IRAS system. In order to carry out this role the post ho ...
... 1.8. Assist in the development of quality assurance programmes for Imaging and radiation protection equipment and train junior staff in these techniques. 1.9. Perform dosimetric calculations for all studies submitted to NHS Tayside through the IRAS system. In order to carry out this role the post ho ...
Strategic Imaging Service Review
... develop his understanding of many of the competing pressures faced in NHS radiology services, and of the tools which can support improvement. Nick is a strong advocate of extended scope practice for radiographers, he has supported and mentored many colleagues’ development into to a wide range of AHP ...
... develop his understanding of many of the competing pressures faced in NHS radiology services, and of the tools which can support improvement. Nick is a strong advocate of extended scope practice for radiographers, he has supported and mentored many colleagues’ development into to a wide range of AHP ...
Neutron capture therapy of cancer
Neutron capture therapy (NCT) is a noninvasive therapeutic modality for treating locally invasive malignant tumors such as primary brain tumors and recurrent head and neck cancer. It is a two step procedure: first, the patient is injected with a tumor localizing drug containing a non-radioactive isotope that has a high propensity or cross section (σ) to capture slow neutrons. The cross section of the capture agent is many times greater than that of the other elements present in tissues such as hydrogen, oxygen, and nitrogen. In the second step, the patient is radiated with epithermal neutrons, which after losing energy as they penetrate tissue, are absorbed by the capture agent which subsequently emits high-energy charged particles, thereby resulting in a biologically destructive nuclear reaction (Fig.1).All of the clinical experience to date with NCT is with the non-radioactive isotope boron-10, and this is known as boron neutron capture therapy (BNCT). At this time, the use of other non-radioactive isotopes, such as gadolinium, has been limited, and to date, it has not been used clinically. BNCT has been evaluated clinically as an alternative to conventional radiation therapy for the treatment of malignant brain tumors (gliomas), and more recently, recurrent, locally advanced head and neck cancer.