Chest Imaging Flashcards
Structures in right border of a plain film (PA view)
Superior vena cava
Right atrium
Inferior vena cava
Structures in left border of a plain film
Aortic knob
Main pulmonary trunk
Left ventricle
Which of the four heart chambers does not form a border on chest xray?
Right ventricle
Which is harder to see? Right atrial enlargement or right ventricular enlargement
Right ventricular enlargement (it does not form a PA view)
Most common chest xray view
PA View
What xray view visualizes diseases at the top of the lung better than the standard back to front view?
Apicolordotic view
Structures that are not seen in right and left border of PA view
Left atrium
Right ventricle
Ascending aorta
Most commonly replaced in patients with valvular heart disease
Mitral valve
Structures that are seen in right lateral view of a plain film
Right ventricle
Tricuspid valve
Located posteriorlu which is anatomically continous with the bifurcation of the right and left main bronchus
Left atrium
Forms the left border of the heart, it also forms part of the lower and posterior half of the cardiac silhouette and superior to it is the left atrium
Left ventricle
Underexposure may stimulate _?
Pulmonary congestion
Overexposure may stimulate _?
Diminished pulmonary blood flow
Refers to the pattern of anatomic arrangement
Situs
The cardiac apex points lefward, but the heart is located predominantly in the right chest (typically due to extrinsic forces)
Dextroposition
Position of gastric air bubble and liver in situs solitus
Gastric air bubble: left
Liver: right
The morphologic right atrium is to the right of the morphologic left atrium
Situs solitus
Position of gastric air bubble and liver in situs inversus
Gastric air bubble: right
Liver: left
The morphologic right atrium is to the left of the morphologic left atrium
Situs inversus
Used when the identification of visceroatrial situs is not possible due to paucity of anatomic markers
Situs ambigous
Widest diameter of the heart compared to the widest internal diameter of the rib cage
Cardio-thoracic ratio
CTS percentage of adults and children
Adults:<50%
Children: 60-70%
Give extracardiac causes of cardiac enlargement
Portable AP films Obesity Pregnant Ascites Straight back syndrome Pectus excavatum
Give the 7 countours of the heart in the frontal projection
Ascending aorta Aortic knob Double density of LA enlargement Identation of LA Right atrium Left ventricle
