Orex_ACLxy_Brochure
... The Orex ACLxy is configurable to meet most clinical applications. With its anatomical interface you can set the system to produce extremely high quality images of any body part. You can import patient demographics directly from your RIS/HIS applications via a DICOM Modality Work List. Once the pati ...
... The Orex ACLxy is configurable to meet most clinical applications. With its anatomical interface you can set the system to produce extremely high quality images of any body part. You can import patient demographics directly from your RIS/HIS applications via a DICOM Modality Work List. Once the pati ...
Optimising patient dose The right dose of expertise
... The detective quantum efficiency (DQE: image quality parameter) evaluation illustrates a similar image quality for CR-CsBr and DR-CsI at RQA3 and RQA5 beam qualities. Both cesium-based detectors produce better image quality than the CR-BaFBr, with a DQE that is more than double. This higher image qu ...
... The detective quantum efficiency (DQE: image quality parameter) evaluation illustrates a similar image quality for CR-CsBr and DR-CsI at RQA3 and RQA5 beam qualities. Both cesium-based detectors produce better image quality than the CR-BaFBr, with a DQE that is more than double. This higher image qu ...
Bruker-MicroCT method note: Limb positioning for in
... crossection including both hindlimbs and the rear torso / abdomen presents a vastly greater area and x-ray beam path length than the hindlimb held separately in a tube. Thus a single limb in a tube can be scanned to an acceptable image quality in much shorter a time. 2. Holding the leg close to the ...
... crossection including both hindlimbs and the rear torso / abdomen presents a vastly greater area and x-ray beam path length than the hindlimb held separately in a tube. Thus a single limb in a tube can be scanned to an acceptable image quality in much shorter a time. 2. Holding the leg close to the ...
Option I – Biomedical Physics
... At these voltages the dominant mechanism for energy loss by the X-rays is the photoelectric effect. Since this effect is strongly dependent on atomic number and there is a substantial difference between the atomic numbers of the elements present in bone (Z=14) and soft tissue (Z=7), it follows th ...
... At these voltages the dominant mechanism for energy loss by the X-rays is the photoelectric effect. Since this effect is strongly dependent on atomic number and there is a substantial difference between the atomic numbers of the elements present in bone (Z=14) and soft tissue (Z=7), it follows th ...
People Exposed To More Radiation From Medical
... the inappropriate use of such imaging and by optimizing studies that are performed to obtain the highest image quality with the lowest radiation dose (Amis et.al 2007). Who is getting all these exams? Over half of the CT exams are done on individuals over the age of 55. In fact, those aged 55-75 in ...
... the inappropriate use of such imaging and by optimizing studies that are performed to obtain the highest image quality with the lowest radiation dose (Amis et.al 2007). Who is getting all these exams? Over half of the CT exams are done on individuals over the age of 55. In fact, those aged 55-75 in ...
Cardiovascular Computed Tomography: Current and Future
... Traditional cardiac CT uses a helical scan mode and very low pitch to perform retrospective ECG-gated reconstructions. This delivers an undesirably high radiation exposure, so various methods have been designed to reduce radiation exposure. One of the first was ECG-based tube current modulation, whi ...
... Traditional cardiac CT uses a helical scan mode and very low pitch to perform retrospective ECG-gated reconstructions. This delivers an undesirably high radiation exposure, so various methods have been designed to reduce radiation exposure. One of the first was ECG-based tube current modulation, whi ...
CT Simulation Refresher Course Sasa Mutic, MS
... certain components of a radiation therapy linear accelerator. Consisting of a diagnostic quality x-ray unit and fluoroscopic imaging system, the treatment table and the gantry are designed to mimic functions of a linear accelerator. The images are transmission radiographs with field collimator setti ...
... certain components of a radiation therapy linear accelerator. Consisting of a diagnostic quality x-ray unit and fluoroscopic imaging system, the treatment table and the gantry are designed to mimic functions of a linear accelerator. The images are transmission radiographs with field collimator setti ...
Diagnostic Reference Levels (DRL)
... Diagnostic Reference Level (DRL) is a dose metric for an average size patient or a phantom. CT Dose Index (CTDIvol) in CT can be used as a metric in a quality control program to identify possible situations where protocols, equipment, or procedures may be produce high radiation doses to patients. Th ...
... Diagnostic Reference Level (DRL) is a dose metric for an average size patient or a phantom. CT Dose Index (CTDIvol) in CT can be used as a metric in a quality control program to identify possible situations where protocols, equipment, or procedures may be produce high radiation doses to patients. Th ...
Ch 1 Basic Imaging Principles - Department of Engineering and
... To develop an imaging equation that incorporates the geometric effects, we utilize an idealized object tz(x,y) that is infinitesimally thin and located in a single plane given by the coordinate z and is capable of differently attenuating x-rays as a function of x and y. tz is transmittivity and repl ...
... To develop an imaging equation that incorporates the geometric effects, we utilize an idealized object tz(x,y) that is infinitesimally thin and located in a single plane given by the coordinate z and is capable of differently attenuating x-rays as a function of x and y. tz is transmittivity and repl ...
Selective Internal Radiation Therapy
... • It will also naturally excrete 131I (body fluids – urine) • The PHYSICAL half life of 131I ~ 8 days • The BIOLOGICAL half life is much faster (10-15 hours) • After a therapeutic dose of 131I, about 75% is excreted in 24hrs • The 131I trapped by thyroid tissue is much slower to leave • This uptake/ ...
... • It will also naturally excrete 131I (body fluids – urine) • The PHYSICAL half life of 131I ~ 8 days • The BIOLOGICAL half life is much faster (10-15 hours) • After a therapeutic dose of 131I, about 75% is excreted in 24hrs • The 131I trapped by thyroid tissue is much slower to leave • This uptake/ ...
Fun Dx Penguine Points
... -an ESE of approximately 200 mR may be assumed for a cassette spot film -an ESE of approximately 100 mR may be assumed for a photofluorospot -fluoroscopic ABC should be evaluated annually Chapter 21: Fluoroscopy -a fluoroscope is used for examination of moving internal structures and fluids -the pho ...
... -an ESE of approximately 200 mR may be assumed for a cassette spot film -an ESE of approximately 100 mR may be assumed for a photofluorospot -fluoroscopic ABC should be evaluated annually Chapter 21: Fluoroscopy -a fluoroscope is used for examination of moving internal structures and fluids -the pho ...
Document
... radiation exposure without unduly limiting the desirable human actions that may be associated with such exposure. In addition, this aim cannot be achieved solely on the basis of scientific knowledge on radiation exposure and its health effects. It requires a model for protecting humans and the envir ...
... radiation exposure without unduly limiting the desirable human actions that may be associated with such exposure. In addition, this aim cannot be achieved solely on the basis of scientific knowledge on radiation exposure and its health effects. It requires a model for protecting humans and the envir ...
Chapter 3
... Some CT imagers have the computer built into the operating console Computers capable of multiprocessing are used in CT (multiprocessing means that each processing unit works on a different set of instructions to increase speed or computing power) ...
... Some CT imagers have the computer built into the operating console Computers capable of multiprocessing are used in CT (multiprocessing means that each processing unit works on a different set of instructions to increase speed or computing power) ...
Dosimetry/ Radiation Therapy Terms
... limited to between two and four ports of entry. The shape of the fields and the depth of penetration can be manipulated, but that is the limit of the ability to conform the radiation. It does not allow for any specific conformation to avoid normal structures in the area of treatment. The treatment i ...
... limited to between two and four ports of entry. The shape of the fields and the depth of penetration can be manipulated, but that is the limit of the ability to conform the radiation. It does not allow for any specific conformation to avoid normal structures in the area of treatment. The treatment i ...
Slide 1
... • Differential contrast between bone and soft tissues • Differential contrast between soft tissues and air • Little difference between various tissue types i.e. fat, muscle, solid organs, blood…. ...
... • Differential contrast between bone and soft tissues • Differential contrast between soft tissues and air • Little difference between various tissue types i.e. fat, muscle, solid organs, blood…. ...
Radiation Safety in Pediatric Imaging - RPOP
... Mean tube current used by members of the Society for Pediatric Radiology for pediatric chest (a) and abdomen (b) MDCT over several age ranges from a 2006 survey compared with a 2001 survey ...
... Mean tube current used by members of the Society for Pediatric Radiology for pediatric chest (a) and abdomen (b) MDCT over several age ranges from a 2006 survey compared with a 2001 survey ...
DRL Reference Guide - NC Radiation Protection
... Kerma (ESAK) in radiography, Entrance Air Kerma Rate in fluoroscopy, and CT Dose Index (CTDIvol) in CT can be used as metric in a quality control program to identify possible situations where certain protocols, equipment, or procedures may be producing unnecessarily high radiation doses to patients. ...
... Kerma (ESAK) in radiography, Entrance Air Kerma Rate in fluoroscopy, and CT Dose Index (CTDIvol) in CT can be used as metric in a quality control program to identify possible situations where certain protocols, equipment, or procedures may be producing unnecessarily high radiation doses to patients. ...
Consumer Guide to Imaging Modalities
... the patient to a lower dose of radiation, and is readily available in most locations. Although the relatively low cost and accessibility may be a benefit, this can potentially lead to inappropriate use with unnecessary radiation exposure and expense. In fact, x-ray imaging is not well-suited for all ...
... the patient to a lower dose of radiation, and is readily available in most locations. Although the relatively low cost and accessibility may be a benefit, this can potentially lead to inappropriate use with unnecessary radiation exposure and expense. In fact, x-ray imaging is not well-suited for all ...
EL CAMINO COLLEGE RADIOLOGIC TECHNOLOGY PROGRAM
... RADIATION THERAPY • branch of Radiology that involves the treatment of disease by means of high energy x-rays (GAMMA) or radioactive substances ...
... RADIATION THERAPY • branch of Radiology that involves the treatment of disease by means of high energy x-rays (GAMMA) or radioactive substances ...
An Imaging Process for Early Detection of Colorectal Cancer Using
... The Israeli company Check Cap is developing a new system for diagnostic imaging of the large intestine using Compton backscattering of X-ray and gamma radiation emitted from a radioactive source. The new imaging process should become a part of the periodic screening program for early detection of co ...
... The Israeli company Check Cap is developing a new system for diagnostic imaging of the large intestine using Compton backscattering of X-ray and gamma radiation emitted from a radioactive source. The new imaging process should become a part of the periodic screening program for early detection of co ...
Computed tomography and MRI
... enabled imaging of the whole body without the need for water surrounding the scanned part of the body. New hardware and more efficient computer algorithms for image reconstruction vastly reduced scanning t ...
... enabled imaging of the whole body without the need for water surrounding the scanned part of the body. New hardware and more efficient computer algorithms for image reconstruction vastly reduced scanning t ...
ACR Practice Guideline for Diagnostic Reference Levels in Medical
... an investigation level to identify unusually high radiation doses or exposure levels for common diagnostic medical X-ray imaging procedures [1-3]. Reference levels are based on actual patient doses for specific procedures measured at a number of representative clinical facilities. The levels are set ...
... an investigation level to identify unusually high radiation doses or exposure levels for common diagnostic medical X-ray imaging procedures [1-3]. Reference levels are based on actual patient doses for specific procedures measured at a number of representative clinical facilities. The levels are set ...
Physics 5 - NYCC SP-01
... is characteristic of the material of the target. The x-ray produced is a result of excess energy from one shell to another. A fast traveling electron going toward a target will eject an electron in an atom of the target material. The resultant x-ray produced is due to the atom which has lost an elec ...
... is characteristic of the material of the target. The x-ray produced is a result of excess energy from one shell to another. A fast traveling electron going toward a target will eject an electron in an atom of the target material. The resultant x-ray produced is due to the atom which has lost an elec ...
Basic CT Physics - Society for Pediatric Radiology
... Bushberg JT, et al. The Essential Physics of Medical Imaging, Wolters Kluwer, Philadelphia, 3rd Edition, 2012. ...
... Bushberg JT, et al. The Essential Physics of Medical Imaging, Wolters Kluwer, Philadelphia, 3rd Edition, 2012. ...
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"".