Helical CT evaluation of the ureteral diseases / 中华放射学杂志

ABSTRACT

Objective To evaluate the clinical applications of helical CT scans in the ureteral diseases.Methods The precontrast and four-phase postcontrast helical CT scans were performed in 110 patients with ureteral diseases confirmed by clinic and pathology, and the multiplanar reformation (MPR) and three-dimensional reconstruction (3D) images were generated from the volumetric data.The ability of helical CT in detecting and diagnosing the ureteral diseases was investigated.The results were then compared with the findings of the other imaging techniques and surgery.Results Combined with axial and MPR images, the location, size, morphology, extension, and the urinary obstruction of the ureteral diseases could be clearly demonstrated in 97.3% cases, and the curved MPR was useful in directly detecting the lesions.The findings of ureteral lesion on helical CT images corresponded well with that of surgery in 81 cases. 3D reconstruction could produce a three-dimensional image that mimics conventional urography, and was useful in displaying the ureteral lesions from multiple views.Helical CT could compensate for some disadvantages of the other imaging techniques.Conclusion Helical CT, with large scanning area and high resolution, can provide comprehensive information about the ureteral diseases, and the curve MPR has the highest value.