NHIN, RHIOs, and Public Health.

Public health plays a critical role in forming the building blocks for community or regional health-information sharing, which is essential to the long-term viability of a Nationwide Health Information Network (NHIN) and the Regional Health Information Organizations (RHIOs). By contributing to its visions, policies, processes, standards, and needs/requirements, public health will close the loop within an NHIN and the RHIOs environment. In this article we illustrate public health's essential role in an NHIN and the RHIOs by examining the mutual benefits to healthcare and public health.

Three-dimensional reconstruction of the coronary artery wall by image fusion of intravascular ultrasound and bi-plane angiography.

Background: Intravascular ultrasound (IVUS) is becoming increasingly accepted for assessing coronary anatomy. However, its utility in visualizing and quantifying coronary morphology has been limited by its 2D tomographic nature. This study presents a 3D reconstruction technique that accurately preserves 3D geometric information.

Comparison of texture analysis methods for the characterization of coronary plaques in intravascular ultrasound images.

Intravascular Ultrasound (IVUS) is a diagnostic imaging technique that provides tomographic visualization of coronary arteries. The aim of this study was to evaluate five texture analysis techniques and determine their ability to distinguish between plaque lesions of different composition. Using histological correlation, regions of calcified, fibrous, and necrotic core plaque were chosen from 27 coronary plaques.

Three-dimensional segmentation of luminal and adventitial borders in serial intravascular ultrasound images.

Intravascular ultrasound (IVUS) provides exact anatomy of arteries, allowing accurate quantitative analysis. Automated segmentation of IVUS images is a prerequisite for routine quantitative analyses. We present a new three-dimensional (3D) segmentation technique, called active surface segmentation, which detects luminal and adventitial borders in IVUS pullback examinations of coronary arteries.