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Table 2: Imaging metrics per patient age quartile^{^a}
Quartile 1 Quartile 2 Quartile 3 Quartile 4 P Value
LR-SR visible on T1W1^{^b} 96% 99% 95% 90% .03
LR-SR continuous^{^c} 95% 96% 95% 91% .40
LR-SR bowing^{^d} 19% 17% 28% 34% .03
LLA visible^{^e} 73% 77% 89% 87% .01
Note:—LLA indicates lateral levator aponeurosis.
↵a Quartile 1: 9–39 years of age; quartile 2: 40–49 years of age; quartile 3: 50–61 years of age; quartile 4: 62–81 years of age.
↵b The percentage of cases in which the LR-SR band was visible on T1WI.
↵c The percentage of cases in which the LR-SR band was visible as a continuous structure extending from the superior muscle complex to the lateral rectus muscle (ie, no gaps or discontinuities).
↵d The percentage of cases in which the LR-SR band demonstrated superotemporal bowing.
↵e The percentage of cases in which the lateral levator aponeurosis was visible, distinct from the LR-SR band.