Analysis of suboptimal stent deployment using intravascular ultrasound and coronary pressure pullback measurement.

Background: There are some cases in whom a sufficient improvement in fractional flow reserve (FFR) could not be achieved even if anatomical results indicated satisfactory stent deployment. We investigated the relation of abnormal findings between intravascular ultrasound (IVUS) and coronary pressure pullback measurement (CP-PB).

Methods: IVUS and CP-PB were investigated after stent deployment in 60 vessels in 53 patients.

Reversibility of cognitive disorder after treatment of dural arteriovenous fistulae.

Introduction: Dural arteriovenous fistulae (DAVF) occasionally lead to cognitive disorders whose reversibility after DAVF treatment remains unclear. We studied changes on pre- and post-treatment magnetic resonance imaging (MRI) and single photon emission computed tomography (SPECT) scans in ten patients with cognitive disorder due to DAVF.

Methods: We studied the symptoms, pre- and post-treatment MRI scans, SPECT findings, and mini-mental state examination (MMSE) and treatment results in ten patients with cognitive disorder due to DAVF.