Radiology S1 U2

how many ribs do you want to be visible in a chest CT/xray

how do you calculate cardiothoracic ratio?

In severe left atrial enlargement, the right lateral border of the left atrium is superimposed over the right atrial shadow, producing a

A lower left than right hilum indicates ...

the concave space immediately below the aortic arch and above the left pulmonary artery

how is the vascular pedicle determined

due to the superimposition of the aerated upper lobes, whereas the right middle lobe and the lingular segment of the left lobe are obscured by the cardiac silhouette.

Placing a patient on their side (decubitus position) and obtaining a film across the chest in the AP direction is described as a

the anatomical plane, which divides the body into right and left parts.

divides the body into ventral and dorsal (front and back) parts

allows imaging of the chest within one breath hold (5–10 seconds).

what does this show

cardiac imaging (CT or MR) is best performed using ECG gating, which allows data acquisition typically during _______ when the heart is not moving.

used to evaluate the aorta and myocardium where it is helpful in the diagnosis of cardiac masses and cardiomyopathy.

most common thoracic aortic anomaly is a ________(Fig. 2.29). On the PA view, the right-­sided arch appears more cephalad (higher) than a normal left-­sided arch.

a stenosis at the junction of the aortic arch and the descending thoracic aorta

For IV access, the optimal location of central venous lines is between

The correct position of the endotracheal tube (ETT)

what does this show?

what does this show?

a collection of air within the mediastinum, the significance of which is variable but can be ominous in patients with a history of trauma or vomiting, suggesting rupture of either the esophagus or trachea

what does this show?

a CT pattern of a hazy opacity that does not obscure the underlying bronchial structures or pulmonary vessels

A structure’s outline is only seen when an adjacent structure in the same anatomic plane is of a different radiographic tissue density giving ris

represents a loss of aeration and varies in extent from being subsegmental appearing as a linear density (subsegmental or discoid atelectasis)

calcified pleural plaques are often benign, especially when bilateral, indicating asbestos exposure
-more extensive or unilateral may be due to healed empyema or tuberculosois

what does tjis show

(formally known as “Kerley lines”), which are identified on chest films as small perpendicular lines at the lung periphery, most commonly in the lower zones

what does this show

a rare but serious syndrome characterized by sudden acute respiratory distress following transfusion and is the leading cause of blood product transfusion–related mortality in the United States. Chest film shows noncardiogenic pulmonary edema with bilateral patchy infiltrates, which may rapidly progress to complete “white out” indistinguishable from ARDS.