X-Ray Stress-Measuring Instrument

X-ray Correlation Spectroscopy Instrument

i3PosNet: Instrument Pose Estimation from X-Ray

Performing delicate Minimally Invasive Surgeries (MIS) forces surgeons to accurately assess the position and orientation (pose) of surgical instruments. In current practice, this pose information is provided by conventional tracking systems (optical and electro-magnetic). Two challenges render these systems inadequate for minimally invasive bone surgery: the need for instrument positioning with...

Quality assessment of conventional X-ray diagnostic equipment by measuring X-ray exposure and tube output parameters in Great Khorasan Province, Iran

Introduction: Regular implementation of quality control (QC) program in diagnostic X-ray facilities may affect both image quality and patient radiation dose due to the changes in exposure parameters. Therefore, this study aimed to investigate the status of randomly selected conventional radiographic X-ray devices installed in radiology centers of Great Khorasan Province, Iran, to produce the da...

Quantifying instrument errors in macromolecular X-ray data sets.

An indicator which is calculated after the data reduction of a test data set may be used to estimate the (systematic) instrument error at a macromolecular X-ray source. The numerical value of the indicator is the highest signal-to-noise [I/sigma(I)] value that the experimental setup can produce and its reciprocal is related to the lower limit of the merging R factor. In the context of this stud...

Atmospheric Electron-induced X-ray Spectrometer (aexs) Instrument

Introduction: The progress in the development of the AEXS is described. The AEXS is a surface analysis tool based on excitation of characteristic x-ray fluorescence (XRF) spectra from samples in ambient atmospheres using a focused electron beam. Operation in ambient atmospheres with moderate-tohigh spatial resolution in comparison to similar instruments is obtained through the use of a thin ele...