Postoperative constructive interference in the steady state images 4 months after shunt surgery in a patient with iNPH. Preoperative images (a–c) and postoperative images (d–f); a, d coronal sections, b, e axial sections at the level of corticomedullary junction. c, f axial sections at the level of basal ganglia. Inserts at right upper corner are magnified views of arrow-indicated VRS. Short-stepped gait was improved immediately after surgery. The CISS images 4 months after surgery showed mild decrease in VRS diameter in the white matter, although there were no significant changes in number. No significant changes were noted in basal ganglia VRS, observation in a 68-year-old patient with iNPH.