Right Ventricular Dimension 1. Right Ventricular Size RV dilatation often associated (although not always) with acute pressure overload. Common pathologies includes acute pulmonary embolism and RV failure. 1.1 Subjective assessment (or what the experts called “eyeballing”) View: A4C (right ventricle-focused view) Phase: end diastole (where chamber size at max) Nothing fancy, just a simple
Pneumothorax – CXR What’s normal ? There is not much else to say here. You would expect in a normal CXR with full lungs expansion, you will see the vasculature and bronchial marking spread evenly to the edge of the chest wall bilaterally. What’s not normal ? In CXR with pneumothorax you will see a
The Three Planes / Views I like to start this section by highlighting the famous short story of blind men and the elephant. For those of you who aren’t familiar with the story, you can read it here. In summary, each blind man encounters different part of the elephant. One man felt the elephant’s leg
The Hounsfield Unit, Window Level & Width The Hounsfield Unit The Hounsfield Unit (HU) is a way to (quantitatively) measure tissue density. More dense structure absorbed more radiation = image is brighter e.g. bone (+1000 HU) Less dense structure absorbed less radiation = image is darker e.g. air (-1000 HU) The reference point is water,
The Blind Men & the Elephant Poem by John Godfrey Saxe (1872) I. It was six men of IndostanTo learning much inclined,Who went to see the Elephant(Though all of them were blind),That each by observationMight satisfy his mind. II. The First approached the Elephant,And happening to fallAgainst his broad and sturdy side,At once began to bawl:“God
Lobar Collapse What’s normal ? For further details on the normal CXR please see specific section here. For quick revision, in the normal CXR where both lungs are fully expanded, (because of the difference in tissue density) you should be able to see all sides border of the lungs, including the normal cardiomediastinal contour. The