For medical radiography Medical radiography For the medical specialty Radiology Radiography is the use of X rays to view a non uniformly composed material such as the human body. By using the physical properties of the ray an image can be developed which displays areas of different density and composition ... object patient. Medical and industrial radiographyRadiography is used for both medical and industry industrial applications see medical radiography and industrial radiography . If the object being examined is living, whether human or animal , it is regarded as medical all other radiography is regarded as industrial radiographic work. History of radiography Image Crookes tube xray experiment.jpg thumb left 230px Taking an X ray image with early Crookes tube apparatus, late 1800s. Radiography ... the dangers of ionizing radiation were discovered. Indeed, Marie Curie pushed for radiography to be used to treat wounded soldiers in World War I. Initially, many kinds of staff conducted radiography ... dictionary might define radiography quite narrowly as taking X ray images , this has long been only ... 21615461651 ISBN 0 471 07338 5 ref In general, medical radiography is done using X rays formed ... of most interest to radiography are X ray and gamma radiation . This radiation is much more ... high energy which makes gamma rays useful in radiography but potentially hazardous to living ... have both been used for radiography, they have fallen out of use as they are radiotoxic alpha radiation .... For the range of energies commonly used in radiography, the interaction between gamma rays and electrons ... accidents Radiographer Projectional radiography Shadowgraphs Background radiation References Reflist ... Radiation Safety in Industrial Radiography , Specific Safety Guide No. SSG 11, International Atomic ... Australian Institute of Radiography http www.acr.org American College of Radiology http www.iaea.org ... Use dmy dates date September 2010 Category Medical imaging Category Radiography ar ... more details
Computed radiography CR uses very similar equipment to conventional Radiography Industrial radiographyradiography except that in place of a film to create the image, an imaging plate IP made of photostimulable phosphor is used. The imaging plate housed in a special cassette and placed under the body part or object to be examined and the x ray exposure is made. Hence, instead of taking an exposed film into a darkroom for developing in chemical tanks or an automatic film processor, the imaging plate is run through a special laser scanner, or CR reader, that reads and digitizes the image. The digital ... from Direct Radiography File CRSCanner.png right thumb CeReO Computed Radiography Scanner Computed radiography CR is often distinguished from Direct Radiography DR . CR and DR have many similarities ... applications Common applications for computed radiography include corrosion surveys on pipes ... on all size piping File Crapared.jpg right thumb Medical applications Computed Radiography systems ... images can be stored digitally. Computed radiography often requires fewer retakes due to under ..., a wide range of thicknesses may be examined in one exposure, unlike conventional film based radiography ... among primes and OEMs. There also are no quality image resolution standards for general radiography ... replacement. See also Digital radiography References http www.willick.com computed radiography.htm ... article wcndt2004 pdf radiography 367 deprins.pdf Computed Radiography in NDT Applications http www.ndt.net article mendt2005 pdf 08.pdf Digital Applications of Radiography http www.medical.philips.com de products xray products radiography computed s index.wpd Philips Medical http www.medical.siemens.com ... http www.fujifilm.com products medical products computed radiography capsula x Fujifilm http www.agfa.com en he solutions radiology cr index.jsp Agfa Healthcare Category Radiography Category Nondestructive testing fr Computed Radiography it Radiografia digitale ja X zh ... more details
refimprove date April 2012 Industrial radiography is the use of ionizing electromagnetic radiation radiation ... of ionizing radiation to change or modify objects radiography s purpose is strictly viewing. Industrial radiography has grown out of engineering, and is a major element of nondestructive testing . It is a method ... rays to penetrate various materials. History Radiography started in 1895 with the discovery of X ray ... and cobalt 60 became available for industrial radiography, and the use of radium and radon decreased ... to inspect a variety of materials. The vast majority of radiography concerns the testing and grading ... are normally examined by X ray machine s using X ray radiography. See airport security for more details ... Gamma ray image of intermodal freight transport intermodal cargo container with stowaway s Gamma radiography and high energy X ray radiography are currently used to scan intermodal freight transport ... other types of radiography like dual energy X ray radiography or muon radiography for scanning intermodal ... tube . It might be possible to use caesium 137 as a photon source for radiography but this isotope ... radiography, clear the area where the work is to be done, add shielding collimators to reduce ... photons to record a picture, the camera in industrial radiography is the radioactive photon source. Neutrons In some rare cases, radiography is done with neutron s. This type of radiography is called neutron radiography NR, Nray, N ray or neutron imaging . Neutron radiography provides different ... the source, allowing photons to exit the radiography camera. Image Torchradiographycamerawithhinge.png ... Defects such as delamination s and planar cracks are difficult to detect using radiography, which ... radiography appears to have one of the worst safety profiles of the radiation professions, possibly ... radiography . Safety reports series No. 13. IAEA, Austria, January 1999 ISBN 92 0 100399 4 ref Due ... late at night when there are few other people present as most industrial radiography is carried ... more details
Knee Tibia and Fibula Ankle Calcaneum Foot Toes Projectional radiography terminology NOTE The word view ... Digital Room Equipment Used in Projectional Radiography Ceiling or Floor Mounted X ray tube Height ... Plate Digital radiography DR Detectors Processor or Image Reader Chest Stand Differences around ... Posterior Oblique with the side of interest closest to the image receptor. blockquote See also Radiography Medical imaging X ray Radiologic technologist Computed radiography Digital radiography Tomography ... positions.htm Online Radiography Positioning Manual http www2.radiography.com index.php Radiographers ... index.html.html The Human Skeleton http www.wikiradiography.com RADIOGRAPHY WIKI A fledgling radiography ... Category Projectional radiography si sk Skiagrafia ... more details
88.6 MeshID D011859 OPS301 OPS301 3 10...3 13 , OPS301 3 20...3 26 OtherCodes Radiography is the use ... resonance imaging MRI are sometimes grouped in radiography because the radiology department of hospitals handle all forms of imaging. Treatment using radiation is known as radiotherapy . History Radiography ... conducted radiography in hospitals, including physicists, photographers, doctors, nurses, and engineers ... a nonspecialist dictionary might define radiography quite narrowly as taking X ray images , this has ... , where the newer technology of ultrasound is also used. Diagnostic radiography Diagnostic radiography ... blood test laboratory tests . This application is known as diagnostic radiography. Since the body ... rich bones . Medical diagnostic radiography is undertaken by a specially trained professional called ... specialities Projection radiography For the main article see Projectional Radiography The creation ... and capturing the resulting remnant beam or shadow as a latent image is known as projection radiography ... lend themselves to projection radiography. It is a relatively low cost investigation with a high diagnosis diagnostic yield. Projection radiography uses X rays in different amounts and strengths ... elbow . Dental radiography uses a small radiation dose with high penetration to view teeth, which ... are used in radiography when traditional projection X ray cannot image what doctors want to see. Below are other modalities included within radiography they are only summaries and more specific ..., is used primarily for osteoporosis tests. It is not projection radiography, as the X rays ... t common. The radiation dose received from DEXA scans is very low, much lower than projection radiography ... used in medical radiography. This radiation is much more energy energetic than the more familiar ... in medical radiography and these requirements determined the desired energies of the tube, the type ... radiography pioneer http www.johnstonsarchive.net nuclear radevents 1984MOR1.html A lost industrial ... more details
Digital radiography is a form of X ray imaging , where digital X ray sensors are used instead of traditional photographic film. Advantages include time efficiency through bypassing chemical processing and the ability to digitally transfer and enhance images. Also less radiation can be used to produce an image of similar contrast to conventional radiography. Instead of X ray film, digital radiography uses a digital image capture device. The gives advantages of immediate image preview and availability elimination of costly film processing steps a wider dynamic range, which makes it more forgiving for over and under exposure as well as the ability to apply special image processing techniques that enhance overall display of the image. Detectors There are two major variants of digital image capture devices flat panel detectors FPDs and high density line scan solid state detectors. FPDs are further classified in two main categories 1. Indirect FPDs . Amorphous silicon a Si is the most common material of commercial FPDs. Combining a Si detectors with a scintillator in the detector s outer layer, which is made from caesium iodide CsI or gadolinium oxysulfide Gd sub 2 sub O sub 2 sub S , converts X rays to light. Because of this conversion the a Si detector is considered an indirect imaging ... examinations Dental main Dental radiography The radiological examinations in dentistry may be classified ..., of the whole skull. Digital radiography in dentistry provides the clinician with the ability ... systems Digital dental radiography comes in two forms direct, that connect directly to the computer ... it under the restricted name radiovisiography other companies use the phrase digital radiography and continues ... of the geometrical distortions already high in dental panoramic radiography. Since 2008 the SCAN300FP system is available in Ajat ART PLUS and ART PLUS C system. See also Computed radiography Category Projectional radiography de Digitales R ntgen fr Radiologie num rique pl Radiografia cyfrowa ... more details
publication Selection Criteria in Dental Radiography holds that given current Evidence based medicine ... sinus es. image PAN TEETH.jpg 450px thumb right Panoramic x ray radiography of the teeth of a 64 year ... See also Portalbox Dentistry Orthopantomogram X ray Radiography Digital radiography Selection Criteria in Dental Radiography References references External links http www.ada.org 2760.aspx FAQ Frequently ... category radiology digital radiography Discussions on Digital Radiography in Dentistry DDSGadget Medical imaging Endodontology Category Dentistry branches Category Projectional radiography ar ... more details
unsourced date December 2011 Merge Neutron imaging date August 2011 Neutron radiography is the process by which film is exposed by first passing neutrons through an object to produce a visible image of the materials that make up the object. It is primarily used in scientific investigations. History The neutron was discovered by James Chadwick in 1932. The first demonstration of neutron radiography was made by Hartmut Kallmann and E. Kuhn in the late 1930s they discovered that upon bombardment with neutrons, some materials emitted radiation that could expose a photographic film. The discovery remained a curiosity until 1946 when low quality radiographs were made by Peters. The first neutron radiographs of reasonable quality were made by J. Thewlis UK in 1955. Around 1960, Harold Berger US and John Barton UK began evaluating neutrons for investigating irradiated reactor fuel. Subsequently, a number of research facilities were developed. The first commercial facilities came on line in the late 1960s, mostly in the US and France , and eventually in many other countries including Canada , Japan , South Africa , Germany , and Switzerland . Neutron imaging Neutron imaging is the process of making an image with neutrons. The resulting image is based on the neutron attenuation properties of the imaged object, and these attenuation properties distinguish neutron and X ray images. Attenuation of X ray s is proportional to density denser materials stop more X rays whereas neutron absorption is not. Some light materials such as boron strongly absorb neutrons while many commonly used metals allow most neutrons to pass through them. Process Neutron imaging requires a source of neutrons, a collimator .... Neutron radiography Note The term neutron radiography is often misapplied to all neutron imaging methods. Neutron radiography is the process of producing a neutron image that is recorded on film ... preferred. Neutron radiography is a commercially available service, widely used in the aerospace industry ... more details
This is a seminal publication of the Faculty of General Dental Practice Faculty of General Dental Practice UK of the Royal College of Surgeons of England . The publication marked the standardisation of dental radiography and now provides the dental profession with a set of evidence based medicine evidence based criteria in order to minimse radiation exposure to dental patients and staff. Key recommendations were in the area of bitewing radiography where intervals between bitewing Screening medicine screening radiographs checking for dental caries between teeth were recommended based on patient risk of disease. The patient is considered to be either High, medium or low risk of dental decay. The interval between bitewings is recommended to be either 6, 12 or 18 months plus accordingly. The effect of this has been to ensure that via a process of clinical governance and clinical audit , the number of radiation exposures to patients is minimised, while allowing clinical decisions to be made based on good radiographs, improving patient outcomes. The second edition of Selection Criteria for Dental Radiography has been fully revised and updated. Several sections have been updated in light of new evidence and research findings while others, such as the use of digital radiography, have been expanded to reflect an increasing use in general dental practice. These selection criteria also conform to the Ionising Radiation Medical Exposure Regulations 2000, and help practitioners form a sound basis for clinical decisions. Category Dental radiography ... more details
no footnotes date April 2012 This is a comprehensive listing of all of the radio programmes made by Orson Welles . This table is a work in progress, and may take some time to fill out. class wikitable rowspan 2 width 33 Date rowspan 2 Network rowspan 2 Length mins rowspan 2 Series rowspan 2 Details rowspan 2 Surviving recording colspan 4 Involvement width 65 Actor width 65 Film director Director width 65 Radio producer Producer width 65 Screenwriter Writer align center align left March 13, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left May 11, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left May 13, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left May 14, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left May 20, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left May 20, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left May 27, 1936 align left CBS align left 15 align left The March of Time align left yes yes align center align left September 19, 1936 align left CBS align left 30 align left Columbia Workshop align left Hamlet by William Shakespeare Part 1. Cast Alexander Scourby, Edgerton Paul, George Gaul, Hiram Sherman, Orson Welles host , Rosamon Pinchot, Sydney Smith. yes yes yes align center align left November 14, 1936 align left CBS align left 30 align left Columbia Workshop align left Hamlet by William Shakespeare Part 2. Cast Edgerton Paul, Edwin Jerome narrator , George Duthie, Hiram Sherman, Irving Reis writer , Joseph Cotten, Laura Hale, Miss Frank Hall, Orson Welles host , Santos Ortega, Shirley Oliver, Sydney Smith, Virginia Welles, Whitford Kane. yes yes yes align center align left April 11, 1937 align left CBS align le ... more details
Genitography is the radiography of the urogenital sinus and internal duct structures after Injection medicine injection of a contrast medium through the opening of the sinus. References Dorland s Illustrated Medical Dictionary Twenty sixth Edition ISBN 0 7216 1645 3 treatment stub Category Projectional radiography ... more details
Interventions infobox Name PAGENAME Image Caption ICD10 ICD9 ICD9proc 88.64 MeshID D011172 OtherCodes Portography is a radiography of the portal vein after injection of radioopaque contrast material . med stub Vascular procedures Operations and other procedures on the digestive system Category Projectional radiography ... more details
Unreferenced date October 2007 Dicdef Focus film distance FFD is the distance between the X ray source and the film in diagnostic radiography . It has recently been superseded due to the replacement of film with computed radiography or direct digital radiography detectors. There are now various possible alternatives source to image receptor distance SID focus image distance FID source receptor distance SRD and focus receptor distance FRD . SID seems to be the most common perhaps as it was already in use as a term in fluoroscopy to describe source intensifier distance. Category Radiography Category Photographic techniques Med stub ... more details
Unreferenced date July 2009 Orbital x ray or orbital radiography is a specialized form of radiography used to study the Orbit anatomy orbit of the eye. It is useful for detecting problems in the eye arising from injury or disease. It is also commonly used for detecting foreign objects in the eye that an ophthalmoscope cannot detect and is sometimes given prior to an magnetic resonance imaging MRI where metal fragments could cause significant damage. Category Ophthalmic equipment medical equipment stub ... more details
policy, speech and language therapy, optometry and radiography. The staff include three Learning ... can also become members and use the library services. Department of Radiography The Department of Radiography at City University London offer two undergraduate degree courses BSc Hons Radiography Diagnostic Imaging and BSc Hons Radiography Radiotherapy and Oncology as well as various other post graduate courses. Diagnostic Radiography The BSc Hons Radiography Diagnostic Imaging course at City ... more details
Shadowgraphy may refer to Shadowgraphy performing art , using hand shadows Shadow play or shadow puppetry, performing art using cut out figures Radiography , the use of X rays Shadowgraph s or shadowgrams, an optical method that reveals non uniformities in transparent media disambig ... more details
unreferenced date June 2010 Automatic Exposure Control AEC is an X ray exposure termination device. A Projectional radiography medical radiography x ray exposure is always initiated by a human operator. X ray termination is done by the same human operator or an exposure control device such as an electronic timer or an AEC device, which ever comes first. The intention of the AEC termination device is to provide consistent x ray film appearance. Operation An AEC system uses a physically thin radiation ionization detector AEC detector which is positioned between the patient being x rayed and the x ray film cassette. X rays passing through the patient also pass through this AEC detector before they strike the x ray film. A weak ionization signal from the AEC detector is integrated as a ramp shaped voltage waveform . This ramp signal rises until it matches a pre set threshold. At this point the x ray exposure is terminated. AEC devices are calibrated to match good x ray film appearance. Advantages Because patients vary in size and shape, an AEC device is very useful in achieving good consistent x ray film results compared to non AEC x ray exposures. DEFAULTSORT Automatic Exposure Control Category Radiography it Controllo automatico dell esposizione ... more details
Amorphous Selenium Flat Panel Detectors are direct conversion detectors, used in digital radiography , for medical imaging applications. Direct conversion is a clinically proven, one step process that utilizes a high efficiency, amorphous selenium a Se based sensor to capture and convert incident X ray photons directly into electric charge. ref http www.agfa.com en he knowledge training technology direct indirect conversion index.jsp Direct vs. Indirect Conversion ref The signal profile in the direct conversion process is sharp and well defined. The amorphous selenium a Se layer provides high spatial resolution. ref Wronski MM, Rowlands JA, Direct conversion flat panel imager with avalanche gain feasibility investigation for HARP AMFPI. ref By comparison, other leading digital radiography technologies utilize scintillator based conversion, typically either CsI Cesium Iodine or GdO Gadolinium Oxide which convert X ray photons to light and then light to charge. This two step process, in which the signal profile is broadened due to optical scatter, may create loss of spatial resolution and image degradation. References See Wikipedia Footnotes on how to create references using ref ref tags which will then appear here automatically Reflist External links http www.fujifilm.com products medical products digital radiography fdr acselerate FujiFilm direct FPD http edge medical.com Edge direct FPD Categories Category Medical imaging ... more details
Unreferenced stub auto yes date December 2009 Involucrum is a layer of new bone growth outside existing bone seen in pyogenic osteomyelitis . It results from the stripping off of the periosteum by the accumulation of pus within the bone, and new bone growing from the periosteum . It can be seen radiography radiographically e.g. with x ray s , but is extremely rare in developed countries as osteomyelitis is rarely left untreated. See also Sequestrum Osteochondropathy Category Skeletal system Musculoskeletal stub ... more details
Unreferenced stub auto yes date December 2009 Orphan date December 2009 Lubberts effect refers to the non uniform response of an Medical imaging imaging system to x ray s that are absorbed at different depths within the input phosphor . It indicates an input phosphor depth dependent response of the imaging system. DEFAULTSORT Lubbert s Effect Category Radiology Category Radiography Med stub ... more details
Interventions infobox Name Pyelogram Image Caption ICD10 ICD9unlinked ICD9proc 87.73 , ICD9proc 87.74 , ICD9proc 87.75 MeshID D014567 OPS301 OPS301 3 13d OtherCodes Pyelogram or pyelography or urography is a form of imaging of the renal pelvis and ureter . ref DorlandsDict seven 000088791 pyelography ref Types include Intravenous pyelogram Retrograde pyelogram Percutaneous pyelogram References reflist Urologic surgical and other procedures Medical imaging Category Urologic imaging Category Projectional radiography medicine stub ... more details
MedAbbrev W Y class wikitable sortable scope col Abbreviation scope col Meaning span style text decoration overline x span x with macron except X AFP extended alpha fetoprotein XR extended release see Time Release Technology medicine br x ray see radiography XRT Radiation therapy radiotherapy used in cancer treatment MedAbbrev W Y Category Lists of medical abbreviations ... more details
File Lingual foramen.JPG thumb right 250px The small lingual foramen black hole in lower portion of picture as seen on a periapical dental radiography radiograph of the anterior human mandible mandible . The lingual foramen is a small hole situated on the tongue side surface of the anterior human mandible mandible through which small blood vessels pass. References reflist Facial bones Category Bones of the head and neck ... more details
Since 1992, the Nanyang Polytechnic School of Health Sciences NYP SHS is an establishment which develops skills for careers in Nursing , Physiotherapy , Occupational Therapy , Diagnostic radiography and Radiation therapy in Singapore . A new Diploma in Dental Therapy was offered for O level leavers from July 2003. The School prepares healthcare professionals to address disease prevention and management, research and development of care procedures, and ways to promote and maintain health and well being. These healthcare professionals work in hospitals, clinics, school dental clinic s, dental centres, dental laboratory dental laboratories , rehabilitation centres, community health agencies and other health related settings. Facilities include the School s e Learning database anatomy resource centre laboratories Diplomas Offered Diploma in Nursing Diploma in Dental Hygiene and Therapy Diploma in Occupational Therapy Diploma in Physiotheraphy Diploma in Diagnostic Radiography Diploma in Radiation Therapy References http www.nyp.edu.sg Nanyang Polytechnic Website Category Nanyang Polytechnic ... more details
Context date October 2009 A Southwick angle is a radiography radiographic angle used to measure the severity of a slipped capital femoral epiphysis SCFE on a radiograph . It was named after Wayne O. Southwick , a famous surgeon. The angle is measured on a frog lateral view of the bilateral hips. It is measured by drawing a line perpendicular to a line connecting two points at the Posterior anatomy posterior and anterior tips of the epiphysis at the physis. A third line is drawn down the axis of femur . The angle between the perpendicular line and the femoral shaft line is the angle. The angle is measured bilaterally. The slipped side is then subtracted from the normal side. The number calculated determines the severity. Mild is classified by 30 . Moderate is 30 50 . Severe is 50 . 12 is the normal control value and can be used in the case of bilateral involvement. References Loder, R. Slipped Capital Femoral Epiphysis. American Family Physician 1998 57 2135. Category Projectional radiography ... more details
Encyclopedia
top
