Lecture 14: Principles of Thoracic Imaging

Question 1

Is kVp of mAs involved with timing of x-ray exposure time

Answer 1

mAs

Question 2

which view do you take to look at right lung in dog

Answer 2

left lateral

Question 3

when looking at a heart rad you can:
A. See ventricular wall thickness
B. See tracheitis
C. See if dog is in HF

Answer 3

C. See if dog is in HF

Question 4

to maximize thoracic image quality what do you want to do to kVp, mA, and mAs

Answer 4

maximize KVp, maximize mA settings, and decrease mAs settings

Question 5

Why do you want to decrease mAs in thoracic radiograph

Answer 5

helps reduce patient motion

Question 6

when you increase kVP you decrease __, more shades of __

Answer 6

contrast, grey

Question 7

recumbency decreases aeration of __lung

Answer 7

down lung

Question 8

dorsal recumbency compresses __

Answer 8

dorsal lung field

Question 9

what views are best for cardiac evaluation

Answer 9

dorsoventral and right lateral

Question 10

what views are best for lung evaluation and why

Answer 10

ventrodorsal- most pneumonias are ventral
Left lateral: most common location for pneumonia is right middle lung lobe

Question 11

what view is this

Answer 11

ventrodorsal

Question 12

what view is this and what is circled

Answer 12

dorsoventral
Pulmonary mass

Question 13

what questions should you ask when assessing lungs on rads

Answer 13

1. Too white
2. Normal
3. Too dark
4. Due to disease or technique

Question 14

What phase of respiration is this dog in. Do we want this phase or different phase. How can you tell. Identify 1-2

Answer 14

exhalation- cardiac silhouette and diaphragm very close together
Prefer inhalation so not touching

Question 15

which image is underexposed, overexposed and good exposure for 1-3

Answer 15

1. Underexposed- too white
2. Overexposed- too dark
3. Good exposure

Question 16

Identify 1-7

Answer 16

1. Caudal aspect of scapula
2. Trachea
3. Heart
4. Thoracic vertebrae
5. Diaphragm
6. Liver
7. Falciform fat

Question 17

identify 1-3

Answer 17

1. Cranial mediastinum
2. Left crus of diaphragm
3. Caudal vena cava

Question 18

in a left lateral the ___crus of diaphragm is further forward and vice versa with right

Answer 18

left

Question 19

identify 1-4

Answer 19

1. Left cranial lobar artery
2. Left cranial lobar vein
3. Right cranial lobe artery
4. Right cranial lobe vein

Question 20

identify 1-11

Answer 20

1. Scapula and spine of shoulder
2. Trachea
3. Right cranial lobe artery
4. Right cranial lobe vein
5. Left cranial lobe artery
6. Left cranial lobe vein
7. Apex of heart
8. Right crus
9. Caudal vena cava
10. Left crus
11. Left caudal lobar artery

Question 21

the caudal vena cava feeds into __on rads

Answer 21

right crus

Question 22

identify 1-6

Answer 22

1. Cranial mediastinum
2. Spinous process
3. Apex of heart
4. Dome of diaphragm
5. Caudoventral mediastinal reflection
6. Fundus of stomach

Question 23

identify 1-5

Answer 23

1 aorta
2. Right caudal lobe artery
3. Right caudal lobe bronchus
4. Right and left caudal lobe veins
5. Left caudal lobe artery

Question 24

identify 1-10- right lateral

Answer 24

1. Scapula
2. Right cranial lobe artery
3. Right cranial lobe bronchus
4. Right cranial lobe vein
5. Left cranial lobe artery
6. Left cranial lobe bronchus
7. Left cranial lobe vein
8. Caudal vena cava
9. Right crus
10. Left crus