The deposition of films by plasma techniques and the plasma
... ray diffractometry (GIXD) and x-ray reflectometry (XR) have been introduced as well suited tools for investigations of plasma deposited thin layers. These x-ray methods have a number of advantages compared to other commonly used techniques They are nondestructive techniques, therefore a sample can b ...
... ray diffractometry (GIXD) and x-ray reflectometry (XR) have been introduced as well suited tools for investigations of plasma deposited thin layers. These x-ray methods have a number of advantages compared to other commonly used techniques They are nondestructive techniques, therefore a sample can b ...
Abstract
... ray diffractometry (GIXD) and x-ray reflectometry (XR) have been introduced as well suited tools for investigations of plasma deposited thin layers. These x-ray methods have a number of advantages compared to other commonly used techniques They are nondestructive techniques, therefore a sample can b ...
... ray diffractometry (GIXD) and x-ray reflectometry (XR) have been introduced as well suited tools for investigations of plasma deposited thin layers. These x-ray methods have a number of advantages compared to other commonly used techniques They are nondestructive techniques, therefore a sample can b ...
Optimisation in general radiography (PDF Available)
... years. Surveys carried out during the 1980s identified a wide range in patient doses showing that there was scope for dosage reduction in many hospitals. This paper discusses factors that need to be considered in optimising the performance of radiographic equipment. The most important factor is choi ...
... years. Surveys carried out during the 1980s identified a wide range in patient doses showing that there was scope for dosage reduction in many hospitals. This paper discusses factors that need to be considered in optimising the performance of radiographic equipment. The most important factor is choi ...
Scientific basis of the Royal College of Radiologists
... science is the connection between the patient and the image. However, science is far more than just providing a vehicle for understanding an imaging or therapeutic process. An understanding of the science underlying a process enables the right person to develop new techniques, understand imaging lim ...
... science is the connection between the patient and the image. However, science is far more than just providing a vehicle for understanding an imaging or therapeutic process. An understanding of the science underlying a process enables the right person to develop new techniques, understand imaging lim ...
Committee SC-72 of the National Council on Radiation Protection
... Committee SC-72 of the National Council on Radiation Protection and Measurements (NCRP) has prepared a new report entitled "Mammography 2002". This report will replace NCRP Report No. 85, "Mammography - A User's Guide" published in 1986. The committee consists of various mammography specialists - ra ...
... Committee SC-72 of the National Council on Radiation Protection and Measurements (NCRP) has prepared a new report entitled "Mammography 2002". This report will replace NCRP Report No. 85, "Mammography - A User's Guide" published in 1986. The committee consists of various mammography specialists - ra ...
imagination at work
... Dose Modulation (ODM), and Optidose*—ensure fast, high-quality acquisitions at optimized dose for all patients across diverse procedures. So you can make fast, confident diagnoses, from head to toe. An easy-to-use, ergonomic interface, combined with GE’s latest technologies such as Digital Tilt, Sma ...
... Dose Modulation (ODM), and Optidose*—ensure fast, high-quality acquisitions at optimized dose for all patients across diverse procedures. So you can make fast, confident diagnoses, from head to toe. An easy-to-use, ergonomic interface, combined with GE’s latest technologies such as Digital Tilt, Sma ...
Physics in Medicine - Wayne State University Physics and Astronomy
... with Student Disability Services for coordination of your academic accommodations. The Student Disability Services (SDS) office is located at 1600 David Adamany Undergraduate Library in the Student Academic Success Services department. SDS telephone number is 313-577-1851 or 313-577-3365 (TDD only). ...
... with Student Disability Services for coordination of your academic accommodations. The Student Disability Services (SDS) office is located at 1600 David Adamany Undergraduate Library in the Student Academic Success Services department. SDS telephone number is 313-577-1851 or 313-577-3365 (TDD only). ...
physics lecture
... - enhances natural tissue contrast and does not produce scatter radiation; more radiation for the patient (bad) - most common reaction in lowenergy photons 3) Compton Scattering - contribute almost all the scatter radiation in diagnostic radiology incident photon strike a free OUTER shell electron; ...
... - enhances natural tissue contrast and does not produce scatter radiation; more radiation for the patient (bad) - most common reaction in lowenergy photons 3) Compton Scattering - contribute almost all the scatter radiation in diagnostic radiology incident photon strike a free OUTER shell electron; ...
Diagnostic Reference Levels (DRLs) in projection radiography
... The results showed a significant potential of reducing entrance surface doses for patients in typical diagnostic imaging situations. One of the reasons for the remarkably lower values of the 75th percentiles in this survey (compared to the existing DRLs) is explained by the high optimization potenti ...
... The results showed a significant potential of reducing entrance surface doses for patients in typical diagnostic imaging situations. One of the reasons for the remarkably lower values of the 75th percentiles in this survey (compared to the existing DRLs) is explained by the high optimization potenti ...
Canadian Association of Radiologists Radiation Protection Working
... the radiation received by a patient in CT is related to the dose-length product (DLP) (defined in next section). Neither of these quantities can be directly compared. Instead, physicists have developed methods (Medical Internal Radiation Dose and Monte Carlo simulations) [8,9] to convert activity an ...
... the radiation received by a patient in CT is related to the dose-length product (DLP) (defined in next section). Neither of these quantities can be directly compared. Instead, physicists have developed methods (Medical Internal Radiation Dose and Monte Carlo simulations) [8,9] to convert activity an ...
Shielding Of Medical Facilities. Shielding Design
... • Once in the uptake room, radioactive aliquot is injected to the patient. • Because of the high effective dose constant associated, hand doses for individuals drawing up and administering PET radiopharmaceuticals can be substantial. • For the typical case described, the dose rate at 5 cm from an un ...
... • Once in the uptake room, radioactive aliquot is injected to the patient. • Because of the high effective dose constant associated, hand doses for individuals drawing up and administering PET radiopharmaceuticals can be substantial. • For the typical case described, the dose rate at 5 cm from an un ...
MASTER`S PROGRAMME IN MEDICAL PHYSICS
... o Charts /tables, box-plot, measures of central tendency, measures of dispersion and their 'critical' use. Examples and exercises with R in the field of bio-medical. o Elements of probability theory: definitions and problems, the conditional probability. o Diagnostic tests and ROC curve ...
... o Charts /tables, box-plot, measures of central tendency, measures of dispersion and their 'critical' use. Examples and exercises with R in the field of bio-medical. o Elements of probability theory: definitions and problems, the conditional probability. o Diagnostic tests and ROC curve ...
The Influence of X-Ray Spectra Filtration on Image Quality
... reduced scan times, faster rotation speed and thinner slices leading to higher image quality. Moreover, recent developments in x-ray tube design allow to lower patient dose. The effective dose exposure of a typical CT examination is now between 1 and 20 mSv depending on the scan length and scan regi ...
... reduced scan times, faster rotation speed and thinner slices leading to higher image quality. Moreover, recent developments in x-ray tube design allow to lower patient dose. The effective dose exposure of a typical CT examination is now between 1 and 20 mSv depending on the scan length and scan regi ...
Multi-Slice CT Scanners
... artefacts on a multi-slice scanner down to similar levels as those produced on a single-slice CT system, it may be necessary to use a Pitchx of less than 1. Thus, a four-slice scanner with the same rotation time as a single-slice scanner would not be able to obtain images of the same quality at four ...
... artefacts on a multi-slice scanner down to similar levels as those produced on a single-slice CT system, it may be necessary to use a Pitchx of less than 1. Thus, a four-slice scanner with the same rotation time as a single-slice scanner would not be able to obtain images of the same quality at four ...
BreAking the trend of increAsed rAdiAtion exposure to pAtients
... radiation safety procedures prior to exposure of a high risk patient (e.g. if pregnant or a child). [19]. A dose monitoring system also facilitates informing patients of the risks entailed by an examination. For example, fluoroscopy can give very high radiation doses during complex interventional pr ...
... radiation safety procedures prior to exposure of a high risk patient (e.g. if pregnant or a child). [19]. A dose monitoring system also facilitates informing patients of the risks entailed by an examination. For example, fluoroscopy can give very high radiation doses during complex interventional pr ...
Computed tomography: Are we aware of radiation risks in computed
... Several studies (9,30-34,38,39) can be given about radiation in diagnostic radiology. Gümüş et al (9) suggested in their study that the knowledge level of Turkish pediatric surgeons were inadequate on radiation exposure of patients during diagnostic imaging. They concluded this result: patients and ...
... Several studies (9,30-34,38,39) can be given about radiation in diagnostic radiology. Gümüş et al (9) suggested in their study that the knowledge level of Turkish pediatric surgeons were inadequate on radiation exposure of patients during diagnostic imaging. They concluded this result: patients and ...
Enhancing Patient Safety in Today`s Healthcare
... image quality, and diagnostic accuracy of the liver CT exam.7 Similarly, for abdominal CTA in 80 renal transplant donors, 370 mgI/mL contrast media provided similar diagnostic accuracy but greater contrast enhancement and image quality compared to 300 mgI/mL.8 ...
... image quality, and diagnostic accuracy of the liver CT exam.7 Similarly, for abdominal CTA in 80 renal transplant donors, 370 mgI/mL contrast media provided similar diagnostic accuracy but greater contrast enhancement and image quality compared to 300 mgI/mL.8 ...
RADIATION PROTECTION IN PEDIATRIC RADIOGRAPHY
... more random, which means that the occurrence of individual events cannot be predicted, and it cannot be determined whether genetic changes or induction of cancer may occur, regardless of the dose absorbed. There are no threshold doses above which these effects will definitely occur (5). Stochastic r ...
... more random, which means that the occurrence of individual events cannot be predicted, and it cannot be determined whether genetic changes or induction of cancer may occur, regardless of the dose absorbed. There are no threshold doses above which these effects will definitely occur (5). Stochastic r ...
Radiation Safety in the Cath Lab
... the product of air kerma and x-ray field area. P KA estimates potential stochastic effects (radiation induced cancer). Peak Skin Dose (PSD, Gy) is the maximum dose received by any local area of patient skin. No current method to measure PSD, it can be estimated if air kerma and x-ray geometry detail ...
... the product of air kerma and x-ray field area. P KA estimates potential stochastic effects (radiation induced cancer). Peak Skin Dose (PSD, Gy) is the maximum dose received by any local area of patient skin. No current method to measure PSD, it can be estimated if air kerma and x-ray geometry detail ...
Period 11 Activity Solutions: Ionizing Radiation and Health
... b) What is the average person’s annual dose of ionizing radiation? Exposure to radiation can be measured in units of rems. An average person’s annual exposure is 200 millirems. For comparison, one hour of arms-length exposure to a gamma source like the Cobalt-60 we use in class would add up to about ...
... b) What is the average person’s annual dose of ionizing radiation? Exposure to radiation can be measured in units of rems. An average person’s annual exposure is 200 millirems. For comparison, one hour of arms-length exposure to a gamma source like the Cobalt-60 we use in class would add up to about ...
WG-28-2014-12-02-Min-rev - Dicom
... diagnostic studies and discussed how to move forward on the recommendations from this TG to make changes to the CT and XA RDSR. 3. Develop Patient Radiation Dose Structured Reportand potential requirments for Patient Dose SR Reviewed the progress on current template development and start work on TID ...
... diagnostic studies and discussed how to move forward on the recommendations from this TG to make changes to the CT and XA RDSR. 3. Develop Patient Radiation Dose Structured Reportand potential requirments for Patient Dose SR Reviewed the progress on current template development and start work on TID ...
Appraisal of Radiation Dose Received in Abdominal Computed
... following scan parameters (kVp, mAs, slice thickness, number of slices, rotation time, displayed CTDIvol and displayed DLP). Ethics and research committees at all hospitals approved the study and informed consent was obtained from all patients prior to the procedure. The patient dose estimation from ...
... following scan parameters (kVp, mAs, slice thickness, number of slices, rotation time, displayed CTDIvol and displayed DLP). Ethics and research committees at all hospitals approved the study and informed consent was obtained from all patients prior to the procedure. The patient dose estimation from ...
Recommended Core Curriculum
... 1) the physical principles associated with good diagnostic imaging techniques 2) the rational behind taking port films, how port films are used in the clinic, and the response characteristics of common films used in the radiation therapy department. 3) the types of portal imaging devices that are av ...
... 1) the physical principles associated with good diagnostic imaging techniques 2) the rational behind taking port films, how port films are used in the clinic, and the response characteristics of common films used in the radiation therapy department. 3) the types of portal imaging devices that are av ...
X-Ray Intensive Medical Procedures Using a Standard
... algorithms to post-process low-dose / pulsed images, improving resolution and contrast to provide a clinically valuable image to the physician. This allows for greater utility of low dose imaging. As the radiation needed to obtain the image dictates the radiation exposure to the patient and physicia ...
... algorithms to post-process low-dose / pulsed images, improving resolution and contrast to provide a clinically valuable image to the physician. This allows for greater utility of low dose imaging. As the radiation needed to obtain the image dictates the radiation exposure to the patient and physicia ...
Backscatter X-ray
Backscatter X-ray is an advanced X-ray imaging technology. Traditional X-ray machines detect hard and soft materials by the variation in transmission through the target. In contrast, backscatter X-ray detects the radiation that reflects from the target. It has potential applications where less-destructive examination is required, and can be used if only one side of the target is available for examination.The technology is one of two types of whole body imaging technologies that have been used to perform full-body scans of airline passengers to detect hidden weapons, tools, liquids, narcotics, currency, and other contraband. A competing technology is millimeter wave scanner. An airport security machine of this type is also referred to as ""body scanner"", ""whole body imager (WBI)"", ""security scanner"", and ""naked scanner"".