Ota M, Nobeyama Y, Fukuda T, et al. - In patients suffering from psoriatic arthritis (PsA), qualitative but not quantitative findings of iodine-enhanced dual-energy computed tomography (DECT) correlated with those of ultrasonography. An alternative imaging tool to diagnose PsA could be afforded by iodine-enhanced DECT.

• Usefulness of iodine-enhanced DECT over ultrasonography for diagnosing PsA has not yet been examined in detail.

• This study involved 13 PsA patients, whose acral joint (which was the most severely affected) was scanned with imaging devices.

• Iodine-enhanced DECT-detected synovitis and periarticular inflammation correlated with the loss of the fibrillar pattern found on ultrasonography (p = 0.033 and 0.002, respectively).

• A correlation was also found between peritendinitis delineated with iodine-enhanced DECT and tendon thickening delineated by ultrasonography.

• No correlation was observed between iodine uptake and Doppler signal or Psoriatic Arthritis Screening and Evaluation scores.