A primer on the use of dual-energy CT in the evaluation of commonly encountered neoplasms.

Technical improvements in the acquisition and display of dual-energy computed tomography (DECT) have made this technique increasingly applicable to clinical practice, particularly in the setting of oncologic imaging. DECT allows for qualitative and quantitative analysis of tissue composition beyond the standard anatomical evaluation possible with single-energy computed tomography. For example, DECT can be used to interrogate iodine and calcium concentrations and to increase iodine signal, which makes many pathologic processes more conspicuous and provides improved understanding of internal structure within mass lesions.

Assessing the walkability of the workplace: a new audit tool.

Purpose: Walking can be incorporated into most people's daily routines if the process is made convenient by a well-designed built environment. Walkability rarely is assessed in the workplace, where adults spend much of their time.

Methods: From existing tools, we developed an instrument to audit walkability at a single government agency's facilities, which were located in multiple states.