Feasibility of aortic aneurysm sac embolization using a novel shape memory polymer embolic device

European Radiology Experimental

Table 1 Baseline and procedural data

	Value (n = 18)		Range
Demographics
Male sex	16	88.9
Age, years	72	± 9	61–88
Aneurysm location
Infrarenal	16	88.9
Aortoiliac	1	5.6
Thoracic	1	5.6
Aneurysm measurements
Diameter, mm (inner wall to inner wall)	62	± 11	53–91
Aneurysm volume, mL	195	± 117	80–444
Perfused aneurysm volume, mL	97	± 60	30–244
Residual flow lumen volume, mL^a	63	± 49	5–200
Aortic endograft^b
Lombard Altura	10	55.6
Lombard Altura fenestrated	1	5.6
Lombard Altura w/renal chimney	1	5.6
GORE EXCLUDER Conformable	3	16.7
GORE TAG Conformable^c	1	5.6
Medtronic Endurant	1	5.6
Endologix AFX2	1	5.6
Shape memory polymer devices
Number	24	± 12	5–45
Volume of embolic material, mL^d	30	± 15	6.25–56.25
Embolic material/residual flow lumen volume^e	108	± 119	10–433

Continuous data are presented as mean ± standard deviation. Categorical data are presented as number (% of total)
^aCalculated by subtraction of the endograft volume (from endograft dimensions) from the perfused aneurysm volume
^bEndograft manufacturers: Lombard Medical, Didcot, Oxfordshire, UK; W. L. Gore & Associates, Flagstaff, Ariz.; Medtronic, Minneapolis, Minn.; Endologix, Santa Rosa, CA, USA
^cUsed to treat a single patient with a thoracic aneurysm
^dBased on the maximum expanded volume of 1.25 mL per device
^eRatio of the volume of shape memory polymer embolic material implanted over the calculated residual flow lumen outside of the endograft, based on the maximum expanded volume of 1.25 mL per shape memory polymer device