OBJECTIVE To develop an algorithm to measure the dimensions of an airway oriented obliquely on a volumetric CT, as well as assess the effect of the imaging parameters on the correct measurement of the airway dimension. MATERIALS AND METHODS An airway phantom with 11 poly-acryl tubes of various lumen diameters and wall thicknesses was scanned using a 16-MDCT (multidetector CT) at various tilt ...

A star's obliquity with respect to its planetary system can provide us insight into the system's formation and evolution, as well hinting at presence of additional objects in system. However, M dwarfs, which are most promising targets for atmospheric follow-up, underrepresented terms characterization surveys due challenges associated making precise measurements. In this paper, we use extreme-pr...

The obliquity of a star, or the angle between its spin axis and average orbit normal companion planets, provides unique constraint on that system's evolutionary history. Unlike Solar System, where Sun's equator is nearly aligned with many hot Jupiter systems have been discovered large spin-orbit misalignments, hosting planets polar retrograde orbits. We demonstrate that, in contrast to stars ha...

Introduction: We present a modeling study of a mechanism that has not previously been considered but is likely to have generated significant subsurface warming during the periodic intervals when Mars' obliquity was lower than 25°. Orbital dynamics calculations show that Mars' obliquity, which is currently 25°, oscillates between 10° and 45°-with a dominant periodicity of ~120,000 years and a mo...

In this large retrospective review of a clinical case, Derby et al (1) again show that the contralateral oblique (CLO) view is safe and accurate. Loss of resistance cannot be expected before the ventral interlaminar line (VILL) and the needle may be passed with impunity to just before this line. As the interlaminar line is accessed, the loss of resistance should occur immediately or shortly the...

Ice cores provide unique archives of past climate and environmental changes based only on physical processes. Quantitative temperature reconstructions are essential for the comparison between ice core records and climate models. We give an overview of the methods that have been developed to reconstruct past local temperatures from deep ice cores and highlight several points that are relevant fo...

STUDY DESIGN A retrospective matched cohort study. PURPOSE To compare the results of combined Luque rod-sublaminar wiring (thoracic) and pedicle (lower lumbar) instrumentation (SLW) versus those with pedicle screw fixation (PS) for scoliosis correction in Duchenne muscular dystrophy (DMD). OVERVIEW OF LITERATURE PS fixation is gaining popularity. Two instrumentation systems were not compare...