CT Lecture 1 - Lorentz Center
... Remaining X-rays detected II • What’s good – High efficiency – Uniform, consistent signal across all energies – Fast • Get reading quickly, clear for next one ...
... Remaining X-rays detected II • What’s good – High efficiency – Uniform, consistent signal across all energies – Fast • Get reading quickly, clear for next one ...
IGRT in CMUH
... • Idea proposed by Thomas Rockwell Mackie • Research/Prototype (Univ. of Wisconsin) • First commercial unit installation at Wisconsin ...
... • Idea proposed by Thomas Rockwell Mackie • Research/Prototype (Univ. of Wisconsin) • First commercial unit installation at Wisconsin ...
Production of X-rays Powerpoint
... Interaction of incident photon with inner shell eAll E transferred to e- (ejected photoelectron) as kinetic energy (Ee) less the binding energy: Ee = E0 – Eb Empty shell immediately filled with e- from outer orbitals resulting in the emission of characteristic x-rays (Eg = differences in Eb of orbit ...
... Interaction of incident photon with inner shell eAll E transferred to e- (ejected photoelectron) as kinetic energy (Ee) less the binding energy: Ee = E0 – Eb Empty shell immediately filled with e- from outer orbitals resulting in the emission of characteristic x-rays (Eg = differences in Eb of orbit ...
Radiologic Technology
... and other articles through which x-rays cannot pass and positioning patients so that the parts of the body can be appropriately radiographed. To prevent unnecessary exposure to radiation, these workers surround the exposed area with radiation protection devices, such as lead shields, or limit the si ...
... and other articles through which x-rays cannot pass and positioning patients so that the parts of the body can be appropriately radiographed. To prevent unnecessary exposure to radiation, these workers surround the exposed area with radiation protection devices, such as lead shields, or limit the si ...
Welcome to Radiologic Technology
... • Similar claustrophobic reactions • Can use contrast media • Soft tissue imaging ...
... • Similar claustrophobic reactions • Can use contrast media • Soft tissue imaging ...
Consumer Guide to Imaging Modalities
... These images are typically produced from a posteroanterior (PA) view, with the x-ray beam entering the patient through the back, producing an image on the film cassette in front of the patient’s chest. (This is done to minimize the size of the heart, and allow a better view of the lungs.) Alternativ ...
... These images are typically produced from a posteroanterior (PA) view, with the x-ray beam entering the patient through the back, producing an image on the film cassette in front of the patient’s chest. (This is done to minimize the size of the heart, and allow a better view of the lungs.) Alternativ ...
1 Medication Injections by Medical Imaging and Radiation Therapy
... It is the opinion of the American Society of Radiologic Technologists that based upon current literature, curricula set forth by the ASRT, Society of Nuclear Medicine and Molecular Imaging and the National Educational Curriculum for Sonography, certification examination specifications by the ARRT, N ...
... It is the opinion of the American Society of Radiologic Technologists that based upon current literature, curricula set forth by the ASRT, Society of Nuclear Medicine and Molecular Imaging and the National Educational Curriculum for Sonography, certification examination specifications by the ARRT, N ...
Philips Microdose Mammography -the Technology
... MTF 6 cm from chest wall and 5 cm above pat. supp. ...
... MTF 6 cm from chest wall and 5 cm above pat. supp. ...
IAEA Training Material on Radiation Protection in - RPOP
... providing high quality images which reproduced transverse cross sections of the body. • Tissues are therefore not superimposed on the image as they are in conventional projections • The technique offered in particular improved low contrast resolution for better visualization of soft tissue, but with ...
... providing high quality images which reproduced transverse cross sections of the body. • Tissues are therefore not superimposed on the image as they are in conventional projections • The technique offered in particular improved low contrast resolution for better visualization of soft tissue, but with ...
Welcome to Radiologic Technology
... • Similar claustrophobic reactions • Can use contrast media • Soft tissue imaging ...
... • Similar claustrophobic reactions • Can use contrast media • Soft tissue imaging ...
Clarify Distance Source to Patient in Mammo and CR
... Distance in mm from source to the table, support or bucky side that is closest to the Imaging Subject, as measured along the central ray of the X-Ray beam. Note: ...
... Distance in mm from source to the table, support or bucky side that is closest to the Imaging Subject, as measured along the central ray of the X-Ray beam. Note: ...
Comparison of radiation dose and image quality between sequential
... The research tools implemented to record the data for this study were two checklists were used (Fig.2). Checklists were considered the most appropriate tool to collect data from this study as they are easy to fill in, not time consuming and to the point. The first checklist allowed the researcher to ...
... The research tools implemented to record the data for this study were two checklists were used (Fig.2). Checklists were considered the most appropriate tool to collect data from this study as they are easy to fill in, not time consuming and to the point. The first checklist allowed the researcher to ...
Procedure - El Camino College
... in the O.R. It’s your duty to protect the patient, yourself and others (healthcare professional) Politely ask whoever can, to move back from the area Provide aprons to those who cannot leave Announce your intent to make an exposure and give time for others to move back IF personnel are in st ...
... in the O.R. It’s your duty to protect the patient, yourself and others (healthcare professional) Politely ask whoever can, to move back from the area Provide aprons to those who cannot leave Announce your intent to make an exposure and give time for others to move back IF personnel are in st ...
X-ray film reject rate analysis at eight selected government hospitals
... rate of all the hospitals studied was 3.1%. This figure is lower (4.46%) than that obtained from an earlier study done in two hospitals in Addis Ababa in 2005 (3). Overall, the figure is well within the internationally accepted range [9-14].However, caution needs to be exercised in making comparison ...
... rate of all the hospitals studied was 3.1%. This figure is lower (4.46%) than that obtained from an earlier study done in two hospitals in Addis Ababa in 2005 (3). Overall, the figure is well within the internationally accepted range [9-14].However, caution needs to be exercised in making comparison ...
Imaging strategies to reduce the risk of radiation in CT studies
... (8,9). Fluoroscopy was a major form of imaging investigation at that time, which explains why radiologists had a higher incidence of leukemia (since with this method the radiologist and patient share the same radiation exposure). One of the earliest reports that described the development of leukemia ...
... (8,9). Fluoroscopy was a major form of imaging investigation at that time, which explains why radiologists had a higher incidence of leukemia (since with this method the radiologist and patient share the same radiation exposure). One of the earliest reports that described the development of leukemia ...
File Ref.No.38933/GA - IV - J2/2013/CU UNIVERSITY OF CALICUT
... Total duration of the training will be 1 year (as prescribed by the AERB). It should be done under the supervision of a designated academic staff member of recognized institute. The supervisor must certify to the adequacy of the field training on the basis of the thesis report submitt ...
... Total duration of the training will be 1 year (as prescribed by the AERB). It should be done under the supervision of a designated academic staff member of recognized institute. The supervisor must certify to the adequacy of the field training on the basis of the thesis report submitt ...
Mammographic Quality Standards
... Mammography is soft tissue radiography of the breast. It requires different equipment and techniques from conventional radiography because of the close similarities among anatomic structures (low subject contrast). Low kilovolt (peak) (kVp) in the 20- to 30-kVp range must be deployed to maximize the ...
... Mammography is soft tissue radiography of the breast. It requires different equipment and techniques from conventional radiography because of the close similarities among anatomic structures (low subject contrast). Low kilovolt (peak) (kVp) in the 20- to 30-kVp range must be deployed to maximize the ...
Dental X-Rays - Patient Information Sheets
... Radiation is a general term that refers to energy that can travel through the environment. X-rays (medical radiation) are a type of radiation that can go through the human body. This allows it to be used for medical purposes. Other forms of radiation we come across in our daily lives are visible lig ...
... Radiation is a general term that refers to energy that can travel through the environment. X-rays (medical radiation) are a type of radiation that can go through the human body. This allows it to be used for medical purposes. Other forms of radiation we come across in our daily lives are visible lig ...
Radiation Protection in Digital Radiology - RPOP
... anatomical area. Once the image is acquired, numerical methods (i.e. software) may automatically crop part of the image, and when the image is received for reading the radiologist will not be aware that a larger anatomical area than necessary was irradiated. • Select the correct pre-programmed techn ...
... anatomical area. Once the image is acquired, numerical methods (i.e. software) may automatically crop part of the image, and when the image is received for reading the radiologist will not be aware that a larger anatomical area than necessary was irradiated. • Select the correct pre-programmed techn ...
Distributed source x-ray tube technology for
... 1.2 Field emission based x-ray tubes Conventional tubes require a filament to be heated to high temperatures to effect electron emission. In the presented distributed source x-ray tubes, carbon nanotubes (CNTs) are used as electron emitters [6]. Electron beams are generated by field emission, a qua ...
... 1.2 Field emission based x-ray tubes Conventional tubes require a filament to be heated to high temperatures to effect electron emission. In the presented distributed source x-ray tubes, carbon nanotubes (CNTs) are used as electron emitters [6]. Electron beams are generated by field emission, a qua ...
New Joint Commission Requirements for Diagnostic
... The [critical access] hospital manages magnetic resonance imaging (MRI) safety risks by doing the following: o Restricting access of everyone not trained in MRI safety or screened by staff trained in MRI safety from the scanner room and the area that immediately precedes the entrance to the MRI scan ...
... The [critical access] hospital manages magnetic resonance imaging (MRI) safety risks by doing the following: o Restricting access of everyone not trained in MRI safety or screened by staff trained in MRI safety from the scanner room and the area that immediately precedes the entrance to the MRI scan ...
Scintillation Crystal Arrays and Assemblies
... temperature dependence is small in the 0 to 60oC range. Multislice CT is an example of a recent application for CdWO4 arrays. CsI(Tl) – CsI(Tl) has the highest light output of these scintillators, and its emission matches well with silicon photodiodes. However, its long afterglow limits its use to a ...
... temperature dependence is small in the 0 to 60oC range. Multislice CT is an example of a recent application for CdWO4 arrays. CsI(Tl) – CsI(Tl) has the highest light output of these scintillators, and its emission matches well with silicon photodiodes. However, its long afterglow limits its use to a ...
Quality Assurance of Radiation Oncology Imaging
... A Photostimulable Storage Phosphor (PSP) plate stores a ‘latent image’ (analogous to film) The PSP plate is subsequently “read” by detecting the emissions produced by laser stimulation Peter Balter, Ph.D. ...
... A Photostimulable Storage Phosphor (PSP) plate stores a ‘latent image’ (analogous to film) The PSP plate is subsequently “read” by detecting the emissions produced by laser stimulation Peter Balter, Ph.D. ...
Basic CT Physics - Society for Pediatric Radiology
... such as when you are building a protocol) will be only dependent on the technique and the phantom used (16cm or 32cm). Therefore, it will not accurately reflect the patient dose. • If you have a scanner with dose modulation that uses the topogram to estimate patient thickness, you will notice that t ...
... such as when you are building a protocol) will be only dependent on the technique and the phantom used (16cm or 32cm). Therefore, it will not accurately reflect the patient dose. • If you have a scanner with dose modulation that uses the topogram to estimate patient thickness, you will notice that t ...