Objective To explore the evaluation of three-dimensional fast imaging employing steady-state acquisition(3D-FIESTA) sequence in the diagnosis of non-tumorous midbrain aqueduct stenosis.Methods 48 patients with non-tumorous midbrain aqueduct stenosis were performed by conventional SE sequence and 3D-FIESTA sequence on a 1.5T superconductive MR unit.Then the advantage on showing aqueduct of midbrain foramen was retrospectively analyzed.Results The detecting rate of midbrain aqueduct stenosis was 98% (47/48) on 3D-FIESTA sequence and 79% (38/48) on conventional SE sequence,3D-FIESTA was more advanced on showing the aqueduct of midbrain(P <0.01).Conclusion The combination of 3D-FIESTA with MPR can clearly show the midbrain aqueduct stenosis,and be a new MRI examination way of obstructive hydrocephalus.

Objective To study the renal oncocytoma CT eosinophil performance,improve the rate of correct diagnosis.Methods Retrospective analysis of seven cases confirmed by pathology of renal oncocytoma CT.Results Tumor cortex to the growth mainly three cases to the pelvis grow mainly two cases,two cases are located entirely within the renal parenchyma.Plain;Four cases of tumor performance for the more homogeneous density.Three cases density uniform,which show two cases within Stelletta tenui Lindgren-sharp edge,low-density,one cases show multiple internal circular low-density category,there calcification in 2 cases.Enhanced cortex and medulla period was more homogeneous strengthen four cases,three cases heterogeneous enhance and strengthen below the renal cortex.Pelvis period density decreased,but the level not lower than the same muscle density,and normal kidney tissue clear,two cases showed a complete fake capsule.Conclusions Renal oncocytoma scar except center outside homogeneous enhancement,pelvis with a period of not less than muscle density levels,and normal kidney tissue.Coated with a complete sham and center when scar more precise diagnosis.Other typical performance required when combined with clinical analysis.

Hyalinizing trabecular tumor (HTT) is a primary thyroid tumor discovered 20 years ago. This tumor is usually misdi-agnosed as papillary thyroid carcinoma because of their many similar nuclear features. Although controversy has focused on the malig-nant potential of HTT, results show that this tumor has a favorable clinical prognosis. Improving the preoperative diagnosis of HTT can reduce the scope of operation because misdiagnosis before or during surgery may lead to unnecessary total thyroidectomy. This study re-viewed the pathology, diagnosis, therapy, and prognosis of HTT.