Radiology

Question 1

types of imaging modalities

Answer 1

FUXCMN
Fluoroscopy
Ultrasound
X-Ray
Computed Tomography
Magnetic Resonance Imagining
Nuclear Medicine Imagining
X-Ray Radiographs
Fluoroscopy
Computed Tomography
Magnetic Resonance Imagining
Ultrasound
Nuclear Medicine Imaging

Question 2

FX-Ray

Answer 2

X-Ray tube from generator to detector
Hot cathode shoots electron beam at a plate of tungsten (in front of an extremely positively charged source or rotating anode) and x-rays are released and fly through collimator

Question 3

denser the object, the more x-rays absorbed, and the fewer x-rays hit the detector, so….

Answer 3

denser objects are whiter

Question 4

because in 2d, x-rays require…

Answer 4

multiple image views

Question 5

Radiography has the highest ….

Answer 5

spatial resolution

Question 6

Pros of radiography…

Answer 6

fast, easy, cheap, highest resolution

Question 7

cons of radiography…

Answer 7

2D, poor soft tissue contract, ionizing radiation

Question 8

2 ways ionization can harm/alter DNA

Answer 8

directly causing a mutation or creating free radicals that indirectly alter DNA

Question 9

To avoid ionization radiation:

Answer 9

ALARA

Question 10

Fluoroscopy is known as:

Answer 10

Dynamic x-raying

Question 11

Fluoroscopy is ______ and is beneficial because___

Answer 11

less harmful, shows real time

Question 12

Fluoroscopy requires the person to drink____

Answer 12

barium

Question 13

double _____ enema

Answer 13

barium drink and air enema

Question 14

digital subtraction angiography DSA

Answer 14

is a type of fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment.

Question 15

Pros of Fluoroscopy:

Answer 15

cheap, dynamic imaging

Question 16

Cons of Fluoroscopy:

Answer 16

poor resolution, poor soft tissue contrast, ionizing radiation

Question 17

Computed Tomography PKA CAT scan

Answer 17

3D reconstruction from a series of cross-sectional images

radiograph images at incremental projection angles (64 slice CT)

Question 18

radiograph images of Computed Tomography are _____ images

Answer 18

axial

Question 19

Hounsfield unit is used in _____ and the units for water and air are_____

Answer 19

Computed Tomography, 0/-1000

Question 20

CT contrast enhanced uses;

Answer 20

iodinated contrast; iohexol

Question 21

Pros of computed tomogrphy:

Answer 21

fairly fast, 3D, separates tissues based on density

Question 22

Cons of Computed Tomography

Answer 22

very high ionizing radiation, pathology that does not change density or enhances is difficult to see contrast reactions

Question 23

Magnetic Resonance Imaging

Answer 23

made of water and fat: hydrogens, H+ has odd number of protons, spins in magnetic field, when field stops, it releases energy

Question 24

what kind of energy is applied to mri protons??

Answer 24

radio waves, gives off radio waves also