Is hepatobiliary scintigraphy insensitive for the diagnosis of sphincter of Oddi dysfunction?

[...]the Australian group changed the CCK augmentation method during QHBS, as originally suggested by Sostre and colleagues 3 : whereas Sostre's group injected a short three minute bolus of 20 ng/kg/body weight of CCK octapeptide (CCK-OP), completed 12 minutes before initiation of QHBS, Craig et al infused 20 ng/kg/body weight CCK-OP over 45 minutes, starting 15 minutes before QHBS, and continued the infusion during the first 30 minutes of the QHBS study.