Linatron® - Mi™ Modular interlaced high-energy X
... Table 1 are derived from a compilation of broad beam data. ...
... Table 1 are derived from a compilation of broad beam data. ...
Whitepaper: Dose Management at Ziehm Imaging
... perform complicated, demanding procedures. It is therefore becoming more important to educate users about employing dose management techniques such as those made possible through the use of tools provided through Ziehm Imaging’s SmartDose concept. This will help reduce dose exposure to patients, sta ...
... perform complicated, demanding procedures. It is therefore becoming more important to educate users about employing dose management techniques such as those made possible through the use of tools provided through Ziehm Imaging’s SmartDose concept. This will help reduce dose exposure to patients, sta ...
ViVIX-S Portable, Wired ViVIX-S Portable, Wired FXRD-1417SA/SB
... ViVIX-S Portable, Wired is a Vieworks’s flat panel digital radiography cassette system with 14”x17” coverage area for general radiographic applications, using its unique image processing system and proprietary flat panel detector. The detector is the same size as a film or a CR cassette and therefor ...
... ViVIX-S Portable, Wired is a Vieworks’s flat panel digital radiography cassette system with 14”x17” coverage area for general radiographic applications, using its unique image processing system and proprietary flat panel detector. The detector is the same size as a film or a CR cassette and therefor ...
2. Technical principles of MSCT
... Automatic exposure control aims to maintain similar image quality for patients of different size and to achieve optimal use of radiation. Systems for AEC can be based on scan projection radiography or alternatively on-line assessment of the attenuation during the helical scan and real-time adaptatio ...
... Automatic exposure control aims to maintain similar image quality for patients of different size and to achieve optimal use of radiation. Systems for AEC can be based on scan projection radiography or alternatively on-line assessment of the attenuation during the helical scan and real-time adaptatio ...
SMU-DDE-Assignments-Scheme of Evaluation PROGRAM Bachelor
... amplifiers: The crystal for an imaging camera is a large slab of thallium-“doped” NaI crystal similar to that used for the scintillation probes. It should be noted that the thickness of a crystal affects its resolution as well as its sensitivity. Although thicker crystals have higher sensitivity, th ...
... amplifiers: The crystal for an imaging camera is a large slab of thallium-“doped” NaI crystal similar to that used for the scintillation probes. It should be noted that the thickness of a crystal affects its resolution as well as its sensitivity. Although thicker crystals have higher sensitivity, th ...
High voltage microfocus CT for inspection of dense, complex parts
... Rotating target increases X-ray intensity There is often a balancing act between X-ray power and spot size. Higher power generates more heat and in case the target could not take the high levels of power, it would quite literally start to punch holes in the target. With the Nikon Metrology rotating ...
... Rotating target increases X-ray intensity There is often a balancing act between X-ray power and spot size. Higher power generates more heat and in case the target could not take the high levels of power, it would quite literally start to punch holes in the target. With the Nikon Metrology rotating ...
Welcome to Radiology
... •Ideal bevel angle is <15° from vertical oThis makes the x-ray beam very narrow oNarrow beam = high resolution image Purpose is to make a small “effective focal-spot size”. ...
... •Ideal bevel angle is <15° from vertical oThis makes the x-ray beam very narrow oNarrow beam = high resolution image Purpose is to make a small “effective focal-spot size”. ...
Ten Years of Computed Tomography in Coordinate Measuring
... Special measurement methods—increased resolution and more Precise detailed measurements of large workpieces are possible with raster tomography. In addition to increasing resolution, it is also used to extend the measurement range. The measured object is tomographically captured in sections, which m ...
... Special measurement methods—increased resolution and more Precise detailed measurements of large workpieces are possible with raster tomography. In addition to increasing resolution, it is also used to extend the measurement range. The measured object is tomographically captured in sections, which m ...
doc d`exploitation sous Word
... 2 Nondestructive testing techniques enable highly accurate pinpointing and identification of flaws like the separation of composite layers, loose bonds between different composite layers, material deficiencies, etc. 3 The originality of this method lies not only in its power but also in the sophisti ...
... 2 Nondestructive testing techniques enable highly accurate pinpointing and identification of flaws like the separation of composite layers, loose bonds between different composite layers, material deficiencies, etc. 3 The originality of this method lies not only in its power but also in the sophisti ...
VCE Physics
... partially taken up in the organ (cold spot), or taken up in excess (hot spot). A series of images are taken over a period of time that show unusual patterns or rates of isotope movement could indicate malfunction in the organ. A distinct advantage of nuclear imaging over x-ray techniques is that bot ...
... partially taken up in the organ (cold spot), or taken up in excess (hot spot). A series of images are taken over a period of time that show unusual patterns or rates of isotope movement could indicate malfunction in the organ. A distinct advantage of nuclear imaging over x-ray techniques is that bot ...
E g
... MeV, an electron-positron pair can be produced with destruction of the photon. The kinetic energy of the resulting particles is given by Ee = Ep = Eg - 2 mec2 ...
... MeV, an electron-positron pair can be produced with destruction of the photon. The kinetic energy of the resulting particles is given by Ee = Ep = Eg - 2 mec2 ...
VCE Physics
... partially taken up in the organ (cold spot), or taken up in excess (hot spot). A series of images are taken over a period of time that show unusual patterns or rates of isotope movement could indicate malfunction in the organ. A distinct advantage of nuclear imaging over x-ray techniques is that bot ...
... partially taken up in the organ (cold spot), or taken up in excess (hot spot). A series of images are taken over a period of time that show unusual patterns or rates of isotope movement could indicate malfunction in the organ. A distinct advantage of nuclear imaging over x-ray techniques is that bot ...
Abstract_Presentation_Mellenthin_April2013
... Hardware Improvements to Reduce Interference and Improve Electrode-Skin Modeling in Electrical Impedance Tomography Electrical Impedance Tomography (EIT) is a low-cost, portable, and radiation-free functional imaging modality that can be used to create low spatial resolution images which reflect dif ...
... Hardware Improvements to Reduce Interference and Improve Electrode-Skin Modeling in Electrical Impedance Tomography Electrical Impedance Tomography (EIT) is a low-cost, portable, and radiation-free functional imaging modality that can be used to create low spatial resolution images which reflect dif ...
Lecture 2: x ray Production (PPT
... (3) Electric circuit to provide the heating currents. This is filament circuit which is different from the x-ray tube current. (4) Electrons are accelerated towards the anode. The x-ray tube current, measured in mA , refers to the number of electrons flowing per second from the filament to anode. ...
... (3) Electric circuit to provide the heating currents. This is filament circuit which is different from the x-ray tube current. (4) Electrons are accelerated towards the anode. The x-ray tube current, measured in mA , refers to the number of electrons flowing per second from the filament to anode. ...
Lecture 9 - Quality assurance
... Radiographers; level B tests are less frequent, but require greater expertise and more complex equipment (Medical Physics tests) – Action levels – split into ‘Remedial’ and ‘Suspension’ (see later) ...
... Radiographers; level B tests are less frequent, but require greater expertise and more complex equipment (Medical Physics tests) – Action levels – split into ‘Remedial’ and ‘Suspension’ (see later) ...
Lecture 5 - Digital, Tomography and dual energy 2013
... is proportional to the intensity of the X-rays that hit it, when they are stimulated by a laser beam • Primary reason for being the most common technique is that it is the cheapest (at least in the short term) – Old X-ray sets used for film-screen radiography can be used, provided exposure factors a ...
... is proportional to the intensity of the X-rays that hit it, when they are stimulated by a laser beam • Primary reason for being the most common technique is that it is the cheapest (at least in the short term) – Old X-ray sets used for film-screen radiography can be used, provided exposure factors a ...
Technical Description
... zoom x 2 and CCD over exposure, which gives bright images also in case of high panel thickness. • P.C. (Win XP) integrating hardware and software for capture and elaboration of the images, measurements and X-Ray control. The P.C., which is equipped with 15” LCD monitor, can be connected to the LAN t ...
... zoom x 2 and CCD over exposure, which gives bright images also in case of high panel thickness. • P.C. (Win XP) integrating hardware and software for capture and elaboration of the images, measurements and X-Ray control. The P.C., which is equipped with 15” LCD monitor, can be connected to the LAN t ...
Optimisation of kilovoltage according to patient size and contrast
... dose reduction with typical adult patients and even 50% dose reduction with paediatric patients in contrast enhanced CT scans. • Suitability of voltage reduction depends on patient size and degree of contrast enhancement – which depends on exam indication and physiology factors. • CT angiography sca ...
... dose reduction with typical adult patients and even 50% dose reduction with paediatric patients in contrast enhanced CT scans. • Suitability of voltage reduction depends on patient size and degree of contrast enhancement – which depends on exam indication and physiology factors. • CT angiography sca ...
Pixel detectors
... • Although it is difficult to show the operation of the system without any radiation source. We will try see some cosmic rays. ...
... • Although it is difficult to show the operation of the system without any radiation source. We will try see some cosmic rays. ...
Bechtel - University of Idaho
... evaluations with contrast possible. • Multiple phases of contrast enhancement can be obtained with single contrast administration. • Multiplanar reconstructions of most scans is possible. ...
... evaluations with contrast possible. • Multiple phases of contrast enhancement can be obtained with single contrast administration. • Multiplanar reconstructions of most scans is possible. ...
Digital radiography conquers the veterinary world
... radiation, which means that it cannot tolerate a wide radiation exposure range without risking saturation. In some studies, that latitude limitation means certain areas may be overexposed while others will be underexposed on the same film. Digital radiography eliminates this disadvantage. With the l ...
... radiation, which means that it cannot tolerate a wide radiation exposure range without risking saturation. In some studies, that latitude limitation means certain areas may be overexposed while others will be underexposed on the same film. Digital radiography eliminates this disadvantage. With the l ...
Body-Section Radiography
... • One superimposed over another • Differences in two images identified digitally • Allows identifying changes in hard tissue that occurred between the two ...
... • One superimposed over another • Differences in two images identified digitally • Allows identifying changes in hard tissue that occurred between the two ...
Chapter 4 The Construction of an x-ray Unit
... be checked when it is not done automatically by the machine. Time should be taken to ensure that all the controls are displayed accurately and that the distance is correct. ...
... be checked when it is not done automatically by the machine. Time should be taken to ensure that all the controls are displayed accurately and that the distance is correct. ...
IMAGE REGISTRATION AND DYNAMIC IMAGING IN PACS
... In the dynamic imaging, a lot of images in series are acquisited from the same anatomical site. Dynamic imaging is useful for functional MRI, mammography and interventional MRI. Conventional Fourier imaging methods require a tradeoff between spatial and temporal resolutions (the Heisenberg's equatio ...
... In the dynamic imaging, a lot of images in series are acquisited from the same anatomical site. Dynamic imaging is useful for functional MRI, mammography and interventional MRI. Conventional Fourier imaging methods require a tradeoff between spatial and temporal resolutions (the Heisenberg's equatio ...
Projection Radiography
... The compensation filter is thicker where the body part is thinner and vice versa, so that the x-ray detector ...
... The compensation filter is thicker where the body part is thinner and vice versa, so that the x-ray detector ...
CT scan
A CT scan, also called X-ray computed tomography (X-ray CT) or computerized axial tomography scan (CAT scan), makes use of computer-processed combinations of many X-ray images taken from different angles to produce cross-sectional (tomographic) images (virtual 'slices') of specific areas of a scanned object, allowing the user to see inside the object without cutting.Digital geometry processing is used to generate a three-dimensional image of the inside of the object from a large series of two-dimensional radiographic images taken around a single axis of rotation. Medical imaging is the most common application of X-ray CT. Its cross-sectional images are used for diagnostic and therapeutic purposes in various medical disciplines. The rest of this article discusses medical-imaging X-ray CT; industrial applications of X-ray CT are discussed at industrial computed tomography scanning.As X-ray CT is the most common form of CT in medicine and various other contexts, the term computed tomography alone (or CT) is often used to refer to X-ray CT, although other types exist (such as positron emission tomography [PET] and single-photon emission computed tomography [SPECT]). Older and less preferred terms that also refer to X-ray CT are computed axial tomography (CAT scan) and computer-aided/assisted tomography. X-ray CT is a form of radiography, although the word ""radiography"" used alone usually refers, by wide convention, to non-tomographic radiography.CT produces a volume of data that can be manipulated in order to demonstrate various bodily structures based on their ability to block the X-ray beam. Although, historically, the images generated were in the axial or transverse plane, perpendicular to the long axis of the body, modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures. Although most common in medicine, CT is also used in other fields, such as nondestructive materials testing. Another example is archaeological uses such as imaging the contents of sarcophagi. Individuals responsible for performing CT exams are called radiographers or radiologic technologists and are required to be licensed in most states of the USA.Usage of CT has increased dramatically over the last two decades in many countries. An estimated 72 million scans were performed in the United States in 2007. One study estimated that as many as 0.4% of current cancers in the United States are due to CTs performed in the past and that this may increase to as high as 1.5 to 2% with 2007 rates of CT usage; however, this estimate is disputed, as there is not a consensus about the existence of damage from low levels of radiation. Kidney problems may occasionally occur following intravenous contrast agents used in some types of studies.