Comparison of Organ Location, Morphology, and Rib Coverage of a Midsized Male in the Supine and Seated Positions

Table 1

Area organ exposure and rib coverage for abdominal organs in the supine and seated positions.

Organ	Supine, mm^2			Seated, mm^2			Difference, %
	Total surface area	Organ exposure area	Area covered, %	Total surface area	Organ exposure area	Area covered, %
Left kidney posterior	7424	6014	19.0	7869	6409	18.6	0.4
Right kidney posterior	7395	5775	21.9	7436	6712	9.7	12.2
Spleen lateral posterior	10012	4901	51.1	9945	3703	62.8	−11.7
Liver anterior	27806	19859	28.6	25648	17140	33.2	−4.6
Liver lateral	26993	14073	47.9	25817	10976	57.5	−9.6