Chest imaging

Question 1

When is the heart considered too large?

Answer 1

When cardiac - Thoracic ratio is too large - above 50%.

Question 2

What are accessory fissures?

Answer 2

Azygous fissure lobe fissure - failure of normal posterior migration of azygous vein.

left minor fissure - separates lingular from remainder of the Left upper lobe.

Superior accessory fissure
inferior accessory fissure.

Question 3

On an x ray which part of the heart do you see - anterior side?

Answer 3

lateral border of the right atrium and lateral border of the left ventricle.

Question 4

What is a costophernic angle and recess.

Answer 4

Angle - Lateral chest wall and the dome of each hemidiaphragm.
- Recess - region btw anterior and posterior costophernic angles.

Question 5

Where does the olique fissure start and finish?

Answer 5

T4/5 and ends at the 6th rib.

Question 6

What is the difference between the right and left bronchus?

Answer 6

Right bronchi is shorter and fatter and more vertical than left. - more stuff goes down it. (aspiration(breathe something in) of foreign bodies , vomit into R bronchus).

Question 7

Where does the trachea start?

Answer 7

C6 to T4/5 (carina)

Question 8

What are the attachments to the diaphragm ?

Answer 8

• Lumbar - Right and left crus (right -arises from L1-L3, Left L1-2 and invertebral disc)
• Sternal - posterior aspect f the xiphoid process.
• Costal - 7- 12th rib and costal cartilages.