The ultrasound image provided shows the liver and diaphragm imaged in a coronal plane with characteristic rib shadows and costophrenic angles. The orientation of the image and the structures visualized suggest that the transducer is placed in the right mid-axillary line, with the sound beam directed coronally - this is a classic right coronal scanning approach.
Key features supporting this:
* The liver appears superiorly in the image.
* Multiple echogenic lines (representing the ribs) run obliquely, casting acoustic shadows.
* The diaphragm and adjacent lung base are seen clearly, which is commonly imaged through the right intercostal spaces in a coronal plane.
Comparison of answer choices:
* A. Anterior: Would show a more transverse view of the liver and not typically image the diaphragm and lung this way.
* B. Posterior: Not used for upper abdominal scanning due to shadowing from the spine and posterior ribs.
* C. Left coronal: Would show the spleen and left kidney - not the liver as seen here.
* D. Right coronal - Correct. This image was obtained using the right coronal (intercostal) approach through the right flank.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
AIUM Practice Parameter for the Performance of an Ultrasound Examination of the Abdomen and/or Retroperitoneum (2020).