Laser-Compton scattering (LCS) x-ray sources have recently attracted much attention for their potential use at local medical facilities because they can produce ultrashort pulsed, high-brilliance, and quasimonochromatic hard x rays with a small source size. The feasibility of in-line phase-contrast imaging for a “thick” biological specimens of rat lumbar vertebrae using the developed compact LCS-X in AIST was investigated for the promotion of clinical imaging. In the higher-quality images, anatomical details of the spinous processes of the vertebrae are more clearly observable than with conventional absorption radiography. The results demonstrate that phase-contrast radiography can be performed using LCS-X.
Two patients with glossopharyngeal neuralgia associated with cardiac syncope were treated with temporary cardiac pacemakers for cardiac syncope and then microvascular decompression. The offending arteries were the posterior inferior cerebellar artery in one patient and the anterior inferior cerebellar artery in the other. The offending arteries were attached to the glossopharyngeal nerve and the vagal nerve at the root entry zones. After surgery, the patients were free from neuralgia and cardiac syncope did not occur after the pacemakers were extracted. Implantation of a temporary cardiac pacemaker in the perioperative period ensures safe microvascular decompression.
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