Term
| Father of radiology. First radiograph in ____. |
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Definition
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Term
| Radiolucent v. radiopaque |
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Definition
Radiolucent - allows passage of x-rays, shows up dark
Radiopaque - blocks passage of x-rays, shows up light |
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Term
Waves of electromagnetic radiation that penetrate structures within the body creating images of these structures on photographic film (or a fluorescent screen).
Can penetrate most substances besides ____. |
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Definition
| X rays - can't penetrate heavy metals |
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Term
| The difference in absorption of those (electromagnetic) waves creates variation in the exposures of the x-ray film and it allows the detail of the image to be formed where those 2 densities meet, called the ____. |
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Definition
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Term
What color do each of these substances appear on an x-ray?
GAS/AIR-
FAT-
FLUID-
BONE-
METAL- |
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Definition
Black
Grey
Grey
White
White
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Term
| If you cannot see the interface between two densities on a radiograph, its called a ____. |
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Definition
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Term
| ___ refers to an image as it is seen on a radiograph. ___ refers to the posture of the pt at the time of exam. ____ refers to the direction of the central beam. |
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Definition
| view. position. projection. |
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Term
| What is the least amount of radiographs you should order? |
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Definition
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Term
| Best view to take a chest x-ray |
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Definition
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Term
| In a ___ view, the x-ray passes through the pt from back to front and results in the heart being minimally magnified. |
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Definition
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Term
| in the ___ view, x ray beam passes front to back. The heart and mediastinum are less defined than in the AP view. |
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Definition
| AP - Anteroposterior view |
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Term
| ___ view - x-ray passing through the side of the pt. Named by the side closest to the ____. |
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Definition
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Term
| View - standing AP where the pt arches their back to elevate the clavicles over the apices |
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Definition
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Term
| ___ view is named by the relationship of the pt to the film. usually somewhere between frontal and lateral. |
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Definition
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Term
| ___ view is performed with the pt laying on their side in a PA position wiht a horizontal beam. Named by the side that is ____. |
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Definition
| lateral decubitus. if free fluid is present, it wil sink to bottom |
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Term
| In the ___ view, the pt is laying on their back and the beam shoots down through their chest. |
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Definition
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Term
| radiographs of breast tissue to evaluate or screen for masses |
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Definition
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Term
| narrow beam of high energy sound waves that produces an image or outline of tissues. used for? |
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Definition
ultrasound.
used for: pregnancies, renal, spleen, liver, gallbladder, aorta, appendicitis, catheter placement, etc |
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Term
Administration of a radioisotope which emits gamma rays and recorded by a special camera.
examples? |
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Definition
nuclear medicine
cardiac, respiratory, malignancy, thyroid |
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Term
Specially trained radiologists who diagnose and treat a number of problems with minimally invasive procedures.
Usually involves administration of contrast dye to help visualize vascular anatomy |
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Definition
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Term
Utilizes x-rays and cross sectional images to make detailed-3 dimensional pictures.
Best for bone imaging.
The x-ray beam is passed around the body at many different angles to generate cross sectional images using filtered back projection algorithm |
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Definition
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Term
| Advantages v. disadvantages of CT |
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Definition
Advantages: quick, painless, only surrounds affected area of body
Disadvantages: very expensive, high radiation exposure |
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Term
| Scanner has a large magnet. A radio wave antenna sends signals to the body and then receives signals back. The returning signals are converted into pictures by a computer attached to the scanner. produces 2 and 3-d images. |
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Definition
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Term
| MRI is best for ___ imaging |
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Definition
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Term
| ___ is a newer application of MRI to visual post-operative joint |
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Definition
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Term
| What type of views are there for the c spine? |
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Definition
lateral, AP, swimmer's, flexion, extension, oblique, odontoid
for trauma: cross table lateral, odontoid |
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Term
| Why would you do a flexion/extension c spine view? |
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Definition
| to view ligaments for damage |
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Term
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Definition
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Term
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Definition
| lateral, oblique, ap, flexion, extension |
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Term
| On which view do you see the SCottie dog? |
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Definition
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Term
| abnormal loss of bone density, decrease in total skeletal mass with normal bone shape, composition, and structure |
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Definition
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Term
| inadequate amount of phosphorus, calcium, and Vit. D available in the blood for mineralization of the bones, resulting in softening of the bone |
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Definition
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Term
| nonmetabolic dz. of bone of unknown cause, characterized by excessive bone destruction and bone repair. X-rays demonstrate decreased bone density adjacent to sites of increased density “white streaks” in bone |
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Definition
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Term
| Malignant neoplasm of the bone marrow, demineralized bone and pathologic fx. X-rays demonstrate punched out lesion of bone with sharply demarcated edges. |
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Definition
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Term
| ____ is a good scan to reveal bone abnormalities |
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Definition
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