Structural Comparison between the Right and Left Atrial Appendages Using Multidetector Computed Tomography

Table 1

Measurements of RAA and LAA.

Measurement part		RAA	LAA
Volume (mm^3)	Mean ± SD	2685 ± 1610	4375 ± 2507
	Range	557–6618	460–9074
	value
Neck area (mm^2)	Mean ± SD	425 ± 313	238 ± 145
	Range	59–1361	34–592
	value
Neck area/volume (mm^2/mm^3)	Mean ± SD	0.016 ± 0.005	0.013 ± 0.005
	Range	0.009–0.032	0.004–0.025
	value
Surface area/; volume (mm^2/mm^3)	Mean ± SD	0.999 ± 0.279	1.283 ± 0.295
	Range	0.497–1.651	0.567–1.712
	value
Amount of pectinate muscles (mm^3)	Mean ± SD	444 ± 166	514 ± 217
	Range	179–861	128–897
	value