CT Angiography of the Upper Extremities: Review of Acute Arterial Entities.

Historically, evaluation of the upper extremity vasculature was performed using digital subtraction angiography. With the advancement of cross-sectional imaging and submillimeter isotropic data acquisition, CT angiography (CTA) has become an excellent noninvasive diagnostic tool for evaluation of the vasculature of the upper extremities. CTA allows quick evaluation of vessel patency and irregularity and achievement of the anatomic detail needed in preoperative planning.

Minimally invasive treatment of retrocardiac tension pneumomediastinum in an extremely low birth weight infant.

A 23.4-week premature and extremely low birth weight neonate was transferred to the Neonatal Intensive Care Unit for management of respiratory failure and retrocardiac pneumomediastinum, suspected to be the result of a low tracheal injury during intubation. Initial conservative management failed and chest radiographs demonstrated worsening retrocardiac pneumomediastinum.

Parametric response mapping as an indicator of bronchiolitis obliterans syndrome after hematopoietic stem cell transplantation.

The management of bronchiolitis obliterans syndrome (BOS) after hematopoietic cell transplantation presents many challenges, both diagnostically and therapeutically. We developed a computed tomography (CT) voxel-wise methodology termed parametric response mapping (PRM) that quantifies normal parenchyma, functional small airway disease (PRM(fSAD)), emphysema, and parenchymal disease as relative lung volumes. We now investigate the use of PRM as an imaging biomarker in the diagnosis of BOS.