Semiquantitative single-photon-emission computed tomography /computed tomography study to evaluate concomitant ulnar impaction syndrome in patients presenting with triangular fibrocartilage complex tears
Fig 3
How the volume of interest (VOI) was drawn.
A spherical VOI was designed to cover the sigmoid notch of the radius, ulnar fovea, ulnocarpal collateral ligament, and lunate–triquetrum in place in three dimensions on CT. The maximum SUV (SUVmax) of the illustrated VOI was calculated for analysis (SUVmax = 9.07 for this case).