AIC Exam 4 Study Questions and Answers Graded A 2024

diagnostic imaging - refers to specific impressions produced by radiologists and radiology techs to determine specific medical conditions -not all diagnostic imaging uses radiation diagnostic testing - refers to medical tests that are performed primarily in lab settings -blood, urine, and cardiovascular tests X-Ray - -form of electromagnetic radiation that allows viewing of internal structures -less dense tissues are darker = radiation is not absorbed -multiple views are taken as X-Ray is a 2D view of a 3D body part views of x-rays - -AP - anterior to posterior view -PA - posterior to anterior view -lateral view What different tissues/structures look like under an x-ray - lungs = Air does not absorb radiation = dark area fat = gray color bone/calcium = white/light uses of an x-ray - -fractures/dislocations -bony abnormalities/deformities -tumor -arthritis risks/side effects of an x-ray - any time radiation is used you increase your risk of developing certain cancers (leukemia and melanoma) -not performed on pregnant women Fluoroscopy - type of radiography that can be performed when the clinician wants to see a "live" image to determine size, shape, and movement of tissue -not as detailed as x ray -common at athletic venues, large universities, and professional athletic venues -quick and non invasive uses of fluoroscopy - -blood flow -tumors -fractures -organs -foreign bodies -some soft tissue risks/side effects of fluoroscopy - any time radiation is used you increase your risk of developing certain cancers (leukemia and melanoma) CT Scan - computed tomography combines high resolution radiographs with computers to form a better internal structure in a cross-section or 3D -rotating x rays in a cross section "slice" put into a 3D image -patient must lie still and occasionally hold breath for the clearest image possible -painless but noisy -15-60 minutes uses of CT Scan - -internal organs -bones -soft tissues -blood vessels risks/side effects of CT Scan - -any time radiation is used you increase your risk of devloping certain cancers (leukemia and melanoma) -allergic reaction to contrast dye used is possible MRI - magnetic resonance imaging: applies magnetic field to the body -aligns with atoms in the body to produce radio waves to produce an image -takes 3D slices of the body image -all metal jewelry must be taken off before going in -watches, removal of dental implants, hearing aids, glasses, hair, accessories, writing utensils -safe for those with metal implants, screws, pins -lasts 30-60 minutes Contraindications: -pacemakers, implanted insulin pump, pregnant, gunshot wound, claustrophobia, tattoos or permanent makeup uses of MRI - -organs -soft tissues -bones -tumors -bleeding -infections risks/side effects of MRI - -none documented -claustrophobic individuals can request open MRI if available Ultrasound - high frequency sound waves that enter the body to produce images of internal structures in real time