In tracing LV endocardial borders for the biplane Simpson method, which structures must be excluded from the endocardial border?

• A. The aorta should be excluded from the traced border.
• B. The pericardium should be excluded from the traced border.
• C. The myocardial trabeculations should be excluded from the traced border.
• D. Trabeculations and papillary muscles should be excluded from the traced endocardial border.

Answer: (D)