| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
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| CRS | Carroll rating scale for depression; catheter-related sepsis; caudal regression syndrome; cervical s... |
| DER | disulfiram-ethanol reaction; dual energy radiography |
| DLR | digital luminescence radiography |
| DR | degeneration reaction; delivery room; deoxyribose; diabetic retinopathy; diagnostic radiology; digit... |
| air-gap radiography | Chest radiography with a space (at least 10 inches) between the subject and film. Instead of using a grid, this method uses the geometry and X-ray absorption by the air to remove scattered radiation. (05 Mar 2000) |
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| bedside radiography | Making radiographic films of a patient confined to bed by taking a movable X-ray machine to the room. Synonym: bedside radiography. (05 Mar 2000) |
| radiography | <investigation, procedure> The making of film records (radiographs) of internal structures of the body by passage of X-rays or gamma rays through the body to act on specially sensitised film. Origin: Gr. Graphein = to write (18 Nov 1997) |
| radiography, abdominal | Radiographic visualization of the body between the thorax and the pelvis, i.e., within the peritoneal cavity. (12 Dec 1998) |
| radiography, bitewing | Technique involving the passage of X-rays through oral structures to create a film record while a central tab or wing of dental X-ray film is being held between upper and lower teeth. (12 Dec 1998) |
| radiography, dental | Radiographic techniques used in dentistry. (12 Dec 1998) |
| radiography, dental, digital | A rapid, low-dose, digital imaging system using a small intraoral sensor instead of radiographic film, an intensifying screen, and a charge-coupled device. It presents the possibility of reduced patient exposure and minimal distortion, although resolution and latitude are inferior to standard dental radiography. A receiver is placed in the mouth, routing signals to a computer which images the signals on a screen or in print. It includes digitizing from X-ray film or any other detector. (12 Dec 1998) |
| radiography, dual-energy scanned projection | A method of producing a high-quality scan by digitizing and subtracting the images produced by high- and low-energy X-rays. (12 Dec 1998) |
| radiography, interventional | Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization. (12 Dec 1998) |
| radiography, panoramic | Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film. (12 Dec 1998) |
| radiography, thoracic | X-ray visualization of the chest and organs of the thoracic cavity. It is not restricted to visualization of the lungs. (12 Dec 1998) |
| magnification radiography | Radiography using a microfocal X-ray tube and increased subject-film distance to provide geometric magnification of the subject without unacceptable loss of sharpness and resolution or an undesirable increase in radiation exposure caused by increasing the distance between the subject and the film. (05 Mar 2000) |
| computed radiography | Radiography using a solid-state imaging device, such as a photostimulable phosphorplate, and recovering, enhancing, and displaying the image using a digital computer. (05 Mar 2000) |
| mucosal relief radiography | Radiographic technique showing fine detail of gastrointestinal mucosa after coating it with a barium suspension and distending the organ with air or gas released from an ingested powder. (05 Mar 2000) |
| portable radiography | Making radiographic films of a patient confined to bed by taking a movable X-ray machine to the room. Synonym: bedside radiography. (05 Mar 2000) |