Creates a 3D anatomical orientation from axis abbreviations.
     
    
    Usage
    findAnatomy3D(axis1 = "L", axis2 = "P", axis3 = "I")
 
    
    Arguments
- axis1
- Character string for first axis (default: "L" for Left) 
- axis2
- Character string for second axis (default: "P" for Posterior) 
- axis3
- Character string for third axis (default: "I" for Inferior) 
 
    
    Value
    An AxisSet3D object representing the anatomical orientation
     
    
    Examples
    # Create orientation with default LPI axes
orient <- findAnatomy3D()
# Create orientation with custom axes
orient <- findAnatomy3D("R", "A", "S")