Cardiothoracic Imaging
Contents Anatomy Techniques Findings Cases References
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Normal cardiothoracic imaging landmarks, PA view



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COMMENTS

Key cardiothoracic landmarks include the suprasternal notch just above the junction of the clavicles and subxiphoid region. The bony sternum overlies the spine on the frontal film and is therefore not clearly identified in that projection. The junction of the ribs with the sternum is usually composed of calcified cartilage and are shown as a segmental change as the rib approaches the sternum. Note the small spaces between the ribs at the sternum which is the only allowable soft tissue window for ultrasound imaging of the heart. The nipples are soft tissue and sometimes appear on chest x-rays as suspicious symmetric nodules in the lower lung fields.

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December 18, 2004 (PL)
version b.003