Setting and Participants
This study was approved by the institutional review board of 〈Blinded
for review〉. A total of 34 patients with PTA who underwent an MRI
examination for the preoperative diagnosis of PTA at 〈Blinded for
review〉 during the period from January 2012 to March 2020 were
examined. SS-EPI at 1.5T was performed in eight patients during the
period Jan. 2012 to Nov. 2017, and RS-EPI at 3.0T was performed in 26
patients during the period July 2014 to March 2020. All patients
underwent a parathyroidectomy, and the resected specimens were
histologically evaluated. Of the 34 patients, 10 patients were excluded
from this study for the following reasons: the lesion was not detectable
on MRI (n=3), DWI data were obtained using a different protocol (n=5),
and the presence of severe motion or susceptibility artifacts (n=2). The
remaining 24 patients were enrolled. Their clinical information
including the results of imaging examinations was retrospectively
reviewed.