Table 2.

Summary of studies evaluating fissural completeness using computed tomography. The percentages in columns 4–6 indicate the percentage of CT studies for which incomplete fissures were observed

Study	Year	# CT studies	Left major	Right major	Right minor	Remarks
Aziz et al. [1]	2004	662	43%	48%	63%	259 out of 921 were omitted because of pulmonary disease; minor fissure only seen in 78% of CT studies. Visual inspection showed that the extent of incompleteness was larger in the right major than in the left major fissure.
Gülsün et al. [2]	2006	144	59.7%	62.5%	–	CT studies were selected to be disease-free or containing mild pulmonary disease that did not affect the orientation of the fissures. Only 25 out of 144 CT studies showed complete major fissures in both lungs.
Mahmut and Nishitani [6]	2007	1000	18.6%	17.4%	20.4%	254 out of 1254 cases were omitted because of lesions close to the fissures. Incomplete was defined as more than 1 cm missing. Uncertain cases were omitted.
Ozmen et al. [7]	2010	387	48.3%	69.7%	86.9%	121 patients excluded because of abnormalities
Cronin et al. [3]	2010	150	25.3%	34.0%	48.3%	Patients selected not to have pulmonary disease or previous pulmonary surgery; no minor fissure found in 3.3% of cases.