ABSTRACT. We report a cervical intraspinal cyst in a dog that was initially tetraparetic but spontaneously recovered completely. MRI revealed a well-demarcated intraspinal cyst located dorsally to a degenerated intervertebral disc. The location of the cyst and its signal features on MRI resembled those of discal cysts previously reported in humans. It has been reported in dogs that clinical signs of a intraspinal cyst are similar to those of intervertebral disc herniation and both conditions require surgical intervention. Unexpectedly, our case showed rapid spontaneous recovery and the follow-up MRI revealed complete resolution of the intraspinal cyst and spinal cord compression. Spontaneous recovery of degenerative intraspinal cyst may occur in dogs, similar to rare human cases as reported previously.KEY WORDS: canine, intervertebral disc disease, intraspinal cyst, magnetic resonance imaging.
Cu 2 ZnSn(S, Se) 4 thin films were fabricated by sulfurization of the precursor evaporated from Cu 2 ZnSnSe 4 , NaF and KF compounds. From Raman analysis, the precursor had mixed Cu 2 SnSe 3 and Cu 2 ZnSnSe 4 structure with no NaF, and the Cu 2 SnSe 3 structure became dominant by adding NaF. After sulfurization, Cu 2 ZnSn(S, Se) 4 was formed in all samples, even if the precursors had different structures. Electron probe microanalysis revealed that the S/(Se + S) molar ratios in the sulfurized films were in the range between 0.95 and 0.97. The open-circuit voltage V oc and the short-circuit current density J sc of Cu 2 ZnSn(S, Se) 4 thin-film solar cells fabricated using NaF and KF improved more than one of the solar cells fabricated using only KF.
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