Development of an X-ray real-time stereo imaging technique using synchrotron radiation

Masato Hoshino,Naoto Yagi,Mikiyasu Shirai,Kentaro Uesugi,James Pearson,Takashi Sonobe

doi:10.1107/s0909049511017547

Abstract

An X-ray stereo imaging system with synchrotron radiation was developed at BL20B2, SPring-8. A portion of a wide X-ray beam was Bragg-reflected by a silicon crystal to produce an X-ray beam which intersects with the direct X-ray beam. Samples were placed at the intersection point of the two beam paths. X-ray stereo images were recorded simultaneously by a detector with a large field of view placed close to the sample. A three-dimensional wire-frame model of a sample was created from the depth information that was obtained from the lateral positions in the stereo image. X-ray stereo angiography of a mouse femoral region was performed as a demonstration of real-time stereo imaging. Three-dimensional arrangements of the femur and blood vessels were obtained.

Highlights

X-ray imaging techniques using synchrotron radiation are generally divided into two categories: one is the threedimensional imaging technique based on X-ray computed tomography (CT) and the other is two-dimensional radiography which can be performed in real time
In the current stereo imaging system the effective field of view is mainly limited by the reflected beam size from a silicon crystal
572 Masato Hoshino et al X-ray real-time stereo imaging technique oblique shape of the reflected beam was corrected by deforming a silicon crystal with a simple bender, a prominent deformation of a sample image was not observed

Summary

Introduction

X-ray imaging techniques using synchrotron radiation are generally divided into two categories: one is the threedimensional imaging technique based on X-ray computed tomography (CT) and the other is two-dimensional radiography which can be performed in real time. Real-time X-ray imaging in the millisecond range has been performed with synchrotron radiation for angiography over many years (Mori et al, 1996; Dix et al, 2003; Bertrand et al, 2005; Schwenke et al, 2007; Shirai et al, 2009; Yuan et al, 2010). Some studies on X-ray stereo imaging using synchrotron radiation have been reported (Gleber et al, 2009; Siegbahn et al, 2011). In those cases, stereo images were not obtained simultaneously, but acquired individually by rotating a sample. We present a demonstration of realtime stereo (biplane) angiography

Experimental set-up of the stereo imaging system

Stereo imaging

Real-time stereo imaging

Discussion