A sensor head for a tissue oximetry device comprising: a front section comprising a plurality of apertures; a set of detectors positioned in a circular arrangement on a first printed circuit board (155, 505); first and second light sources (120a, 120c) linearly positioned on a bisecting line of a circle of the circular arrangement; a first source diode and a second source diode positioned on a second printed circuit board (150, 500), wherein the first printed circuit board (155, 505) is between the plurality of apertures and the second printed circuit board (150, 500); a first optical fiber coupled between the first light source and the first source diode; and a second optical fiber coupled between the second light source and the second source diode; wherein a first detector included in the set of detectors is at a first distance from the first light source and is positioned on a first side of the line, a second detector included in the set of detectors is at a second distance from the second light source and is positioned on a second side of the line, wherein the first and second sides of the line are opposite sides of the line, wherein the first distance and the second distance are equal, the first detector is at a third distance from the second light source, the second detector is at a fourth distance from the first light source, wherein the third distance and the fourth distance are equal, a third detector included in the set of detectors is at a fifth distance from the first light source, is at a sixth distance from the second light source, and is positioned on the first side of the line, wherein the fifth distance is different from each of the first distance and the second distance, wherein the sixth distance is different from each of the first distance and the second distance, a fourth detector included in the set of detectors is a seventh distance from the first light source, is an eighth distance from the second light source, and is positioned on the second side of the line, wherein the seventh distance is different from the first, second, and fifth distances, wherein the eighth distance is different from the first, second, and sixth distances, wherein the first detector is nearest to the first light source relative to all other detectors in the set of detectors, the second detector is nearest to the second light source relative to all other detectors in the set of detectors, wherein the first detector is farthest from the second light source relative to all other detectors in the set of detectors, and wherein the second detector is farthest from the first light source relative to all other detectors in the set of detectors. a front section comprising a plurality of apertures; a set of detectors positioned in a circular arrangement on a first printed circuit board (155, 505); first and second light sources (120a, 120c) linearly positioned on a bisecting line of a circle of the circular arrangement; a first source diode and a second source diode positioned on a second printed circuit board (150, 500), wherein the first printed circuit board (155, 505) is between the plurality of apertures and the second printed circuit board (150, 500); a first optical fiber coupled between the first light source and the first source diode; and a second optical fiber coupled between the second light source and the second source diode; wherein a first detector included in the set of detectors is at a first distance from the first light source and is positioned on a first side of the line, a second detector included in the set of detectors is at a second distance from the second light source and is positioned on a second side of the line, wherein the first and second sides of the line are opposite sides of the line, wherein the first distance and the second distance are equal, the first detector is at a third distance from the second light source, the second detector is at a fourth distance from the first light source, wherein the third distance and the fourth distance are equal, a third detector included in the set of detectors is at a fifth distance from the first light source, is at a sixth distance from the second light source, and is positioned on the first side of the line, wherein the fifth distance is different from each of the first distance and the second distance, wherein the sixth distance is different from each of the first distance and the second distance, a fourth detector included in the set of detectors is a seventh distance from the first light source, is an eighth distance from the second light source, and is positioned on the second side of the line, wherein the seventh distance is different from the first, second, and fifth distances, wherein the eighth distance is different from the first, second, and sixth distances, wherein the first detector is nearest to the first light source relative to all other detectors in the set of detectors, the second detector is nearest to the second light source relative to all other detectors in the set of detectors, wherein the first detector is farthest from the second light source relative to all other detectors in the set of detectors, and wherein the second detector is farthest from the first light source relative to all other detectors in the set of detectors.