Avascular Necrosis of the Capitate: MRI and Surgical Decision-Making of Two Case Reports

Avascular necrosis (AVN) is a rare disease occurring in the capitate of the wrist which is the third most common site of AVN among carpal bones. There are few reports on the MRI findings of AVN in the capitate bone. Besides, there is a paucity of reports showing the benefits of imaging for the choice of the treatment modality. We report two rare cases of capitate AVN requiring surgery.

Use of Cardiac Computed Tomography and Magnetic Resonance Imaging in Case Management of Atrial Fibrillation with Catheter Ablation

Atrial fibrillation (AF) is the most common arrhythmia associated with the risk of morbidity and mortality in clinical patients. AF is considered as an arrhythmia type that develops and progresses through close connection with cardiac structural arrhythmogenic substrates. Since the introduction of catheter ablation-mediated electrical isolation of arrhythmogenic substrates, cardiac imaging indicates improved treatment outcome and prognosis with appropriate candidate selection, ablation catheter guidance, and post-ablation follow-up. Currently, cardiac computed tomography (CCT) and cardiovascular magnetic resonance (CMR) imaging are essential in the case management of AF at both pre-and post-procedural stages of catheter ablation. In this review, we discuss the roles and technical considerations of CCT and CMR imaging in the management of patients with AF undergoing catheter ablation.