Lecture 2: Imaging Flashcards
(23 cards)
Physicians specializing in radiology (the imaging specialists) are know as…….
radiologists
Professional technicians who produce the images (including precisely position of body part) are known as……
radiographers
What is musculoskeletal imaging?
another word for x-rays
What is radiodensity?
How much radiation an object absorbs from the x-ray beam
The __________ (greater / smaller) an object’s effective atomic number, volume density, and/or thickness, the ____________ (greater / smaller) its radiodensity.
The GREATER an object’s effective atomic number, volume density, and/or thickness, the GREATER its radiodensity.
The greater the object radiodensity, the ___________ (greater / less) the radiographic density, resulting in a whiter image; the less the object radiodensity the _____________ (greater / less) the radiographic density, resulting in a blacker image
The greater the object radiodensity, the LESS the radiographic density, resulting in a whiter image; the less the object radiodensity the GREATER the radiographic density, resulting in a blacker image
What is radiographic density?
The amount of blackening on the radiograph
Rank these items from most radiodensity to least radiodensity: fat, bone, metal, air, water
metal, bone, water, fat, air
What are the two parts of radiopharmeceuticals? (hint: break down the word)
1) the pharmaceutical targets specific organ)
2) the radionuclide (makes it show up on scan)
MRI, CT, diagnostic ultrasound (US), and nuclear imaging are considered to be what type of imaging?
advanced imaging
conventional tomography and contrast-enhanced radiographs are considered to be what type of imaging?
conventional radiography
Which type of conventional radiography do arthography and myelography fall under?
contrast-enhanced radiographs
___________ (which type of imaging) are most valuable in confirming the presence of disease and demonstrating the distribution of disease in the skeleton
bone scans
T/F: MRI does not involve ionizing radiation
True
What does ORIF stand for?
open reduction internal fixation
What is the first-order diagnostic imaging modality?
conventional radiography
What is one advantage of conventional radiography?
low cost
What is a disadvantage of conventional radiography in comparison to MRI or ultrasound?
ionizing radiation
What is one disadvantage of a computed tomography (CT) in comparison to conventional radiography?
CT is more expensive
Does computed tomography (CT) or conventional radiography require a higher dose of radiation?
computed tomography (CT)
______________ produces cross-sectional images, or slices, of tissues suing strong magnetic field and radiofrequency pulses to affect the alignment of the body’s hydrogen nuclei
magnetic resonance imaging (MRI)
Is an MRI invasive?
No; it may actually replace invasive diagnostics such as arthroscopy for knee and shoulder
