PURPOSE OF REVIEW Cervicogenic headache (CHA) is a secondary headache which has a source in the upper cervical spine. Many traditional analgesic choices lack good efficacy in managing the associated pain. As a result, in management of CHA, radiofrequency ablation (RFA) or pulse radiofrequency (PRF) has been tried with success. Our study investigated the use of RFA and PRF for the management of ...

The η Chamaeleontis star cluster is one of the most important nearby groupings of pre-main sequence (PMS) stars. With accurately known distance, compact structure and highly-coeval intermediate-aged population, the η Cha cluster is an important laboratory for enhancing our understanding of all PMS star evolutionary issues. In this paper, recent results concerning the stellar population are disc...

Two dense dark cloud cores representing different stages of dynamical evolution were observed in a number of molecular spectral lines. One of the cores, Cha-MMS1 in the Chamaeleon cloud i contains a Class 0 protostar, whereas the other, CrA C in the R Coronae Australis cloud, is pre-stellar. The molecules selected for this study are supposed to show significant abundance variations in the cours...

Introduction-Quantitative computed tomography (QCT) has been commonly used to acquire subject-specific, volumetric bone densities in vivo. With QCT, bone is modeled as a specimen composed of water and mineral, and the x-ray attenuation coefficients (i.e., Hounsfield number) after being corrected with scan phantoms, is used to calculate the mineral density of each voxel.[1] With QCT, a heterogen...