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Diagnostic Imaging Terms
developer Correct Answer-The chemical solution that converts exposed silver halide crystals to black metallic silver myelography Correct Answer-radiography of the spinal cord and nerve roots using contrast media photostimulable Correct Answer-being able to store a latent image that may be freed as light when stimulated by scanning laser Sievert (Sv) Correct Answer-dose of radiation equivalent to the absorbed dose in tissue (1 sievert equals 100 rem). MagneticResonance Imaging (MRI) Correct Answer-uses a magnetic field that recognizes the natural resonance of atoms within the body of produced images Anode Correct Answer-Positive electrode Kilovoltage Correct Answer-Highest voltage of x-ray tube used during an exposure
gray Correct Answer-the measured unit of radiation dose that is absorbed as a result of ionized radiation PACs Correct Answer-Acronym for Picture Archiving and Communications System. PACS enables improved image resolution as images are stored in digital format and manipulated by software controls. tomography Correct Answer-is a modality that uses an x-ray tube that freely rotates around patient creating a dataset of images X-ray Correct Answer-a form of electromagnetic radiation Grid Correct Answer-a device made up of lead strips interspaced with a radiolucent material. it absorbs scatter radiation computed radiography Correct Answer-is a type of digital radiography that uses a cassette screen system Postive Contrast Correct Answer-type of medium such as barium or iodine that is radiopaque on radiographs used to visualize organs in the body. shows up white
fluoroscopy Correct Answer-technique in which x-rays are directed through the body to a fluorescent screen that displays internal structures in continuous motion Safelight Correct Answer-special light or filtered light that can remain on during the developing procedure Collimator Correct Answer-Restricts the size and shape of the x-ray beam Fixer solution Correct Answer-a chemical solution that clears unchanged silver halide crystals on exposed x-ray film latent image Correct Answer-The invisible image on the x-ray film after exposure but before processing rare earth elements Correct Answer-are photosensitive elements such as lanthanum oxybromide and gadolinium oxysulfide that are in an x-ray intensifying screen Transducer Correct Answer-the device on an ultrasound machine that emits and receives a sound wave signal that converts the waves into electrical impulses
DICOM (Digital Imaging and Communications in Medicine) Correct Answer-acronym for the universal method in which medical imaging can be stored and transferred soundwaves Correct Answer-ultrasound is a modality that uses ------ that interact with tissues interfaces and are reflected back to create a image oxygen Correct Answer-is a negative contrast agent that are radiolucent on radiographs and are used to outline organs Object film distance Correct Answer--the distance between object being imaged and the film 3 types of x-ray equipment Correct Answer-stationary/fixed mobile portable Density Correct Answer-refers to the degree of blackness of the film contrast Correct Answer-refers to varying shades of gray on the film Forshortening Correct Answer-occurs when the object being radiographed is not parallel to the recording surface
if radiograph is to light you? Correct Answer-Double the mAs increase the kVp by 20% if radiograph is to dark you? Correct Answer-half the mAs decrease the kVp by 16% What controls the penetrating power? Correct Answer-kVp What controls the volume of electrons? Correct Answer-mA When taking a radiograph when do you use the bucky tray Correct Answer-when the part of the body being imaged is greater then 10cm To minimize the penumbra effect the FFD should be Correct Answer- 36-40 inches what does increasing the kVp do Correct Answer-causes the electrons to move faster on radiographs air or lung tissue will appear black or ______? Correct Answer-radiolucent with increasing density the tissue will appear white or more _______? Correct Answer-Radiopaque
positive contrast Correct Answer-shows up white barium sulfate iodine (safer to use if patient has a suspected rupture) Myelography (used to visualize the spine) negative contrast Correct Answer-shows up black air O Co Nitrous Double contrast study Correct Answer-uses both a radiopaque and a radiolucent contrast medium used in bladder, stomach, or colon Pneumocystogram Correct Answer-Radiographic technique for evaluating the urinary bladder using a negative contrast (air) urography Correct Answer-radiography of the urinary tract and kidneys arthography Correct Answer-x-ray of a joint taken after the injection of a contrast medium into the joint
When auscultating the lungs, the patient should be in which of the following positions? Correct Answer-sternal or standing recumbency Radiographic detail Correct Answer-Radiograph to be considered Dx quality when interfaces between tissues and organs are sharp Right lateral views in radiography have the animal positioned in what orientation on the table? Correct Answer-Right lateral recumbency Which of the following would absorb the most x-ray energy? Correct Answer-Metal What ocular test will tell you if a corneal ulcer is present. Correct Answer-Fluorescien test When logging a TPR in the patients record, where does it go? Correct Answer-Objective If a technician wants to draw blood from a right medial saphenous vein, in what position should the animal be restrained? Correct Answer-Right lateral recumbency Hyperthermia can be caused by________________. Correct Answer- Pain Stress
Seizures What ocular test will give you information about tear production? Correct Answer-Schirmer test Anal glands are located at ______and ______ o'clock around the anus. Correct Answer-4 and 8 There is an interesting correlation between kVp and electromagnetic radiation. Generally as the: Correct Answer-kVp is increased, the penetration is increased What does a dosimeter badge do? Correct Answer-Measures the amount of radiation you were exposed to
