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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: J Vasc Interv Radiol. 2009 Aug 19;20(10):1343–1351. doi: 10.1016/j.jvir.2009.05.038

Figure 2.

Figure 2

Heat load: 1.7 mm cryoprobes at 15 minutes showing the slightly greater impact of high heat load (39°C) upon smaller cryoprobes and the compensatory effect of multi-probes. The overall ice had 1.6 times greater cross-sectional surface area for the 24°C medium heat load phantom (12.0 versus 7.6 cm2; Diameter = 3.1 vs. 3.9), but the lethal zone was three times larger (2.7 versus 0.9 cm2; Diameter = 1.1 vs. 1.9). These differences are overcome with four cryoprobes, whereby the surface area ratios of total/lethal ice for the high and medium heat load phantoms are 29.2/15.2 cm2 (diam: 6.5/4.9 cm) and 31.3/14.9 cm2 (diam: 6.7/5.0 cm), respectively.