Cross-sectional Anatomy and Imaging of the Thorax Flashcards
1
Q
What structures can be identified on a normal CXR?
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A
1st ribs Clavicles Scapulae Transverse and spinous processes of the upper thoracic vertebrae Tracheal shadow Heart Right and left lungs Hilum of the lungs Domes of the diaphragm Sex of subject (presence of breasts),
2
Q
How is the sex of the subject determined on a CXR?
A
Presence of breast shadows.
3
Q
Which dome of the diaphragm reaches more superiorly and why?
A
Right, due to the presence of the liver.
4
Q
What can a cross-sectional specimen of the thorax show?
A
Thoracic vertebrae Ribs Sternum Spinal cord Heart Lungs Pleura Descending aorta Oesophagus Trachea Intercostal muscles Erector spinal muscles
5
Q
How would it be seen that a CT was taken from the T4 vertebral level?
A
Can see the tracheal bifurcation.
6
Q
What colour do the respiratory passages and lungs appear on a CT?
A
Black.
7
Q
Why do structures appear black on a CT?
A
Air space.
8
Q
What way should a CT scan be viewed by clinical convention?
A
Feet-up.
9
Q
What is the relative position of the oesophagus to the trachea at all points along their length?
A
Posterior.
