Table 1.

Euclidean offset distances between the upper surface of the rod and the center-of-mass of the volumetric image and the middle of the rod and the center-of-mass of the volumetric images for the left and right hemisphere targets at 735 nm, which showed the best contrast.

Wavelength/target	${\lambda }_1$		${\lambda }_2$
	Left hemisphere (mm)	Right hemisphere (mm)	Left hemisphere (mm)	Right hemisphere (mm)
Offset from center of superior surface of target	5.67	3.39	7.81	4.32
Offset from center of target volume	5.83	3.68	6.91	2.59