[Comparison by dynamic enhancement in spiral CT to differentiate peripheral squamous cell carcinoma from adenocarcinoma of the lung].

Objective: To compare the manifestations of peripheral lung squamous cell carcinoma by CT dynamic enhancement with that of adenocarcinoma, and evaluate the difference of CT dynamic enhancement to distinguish peripheral lung squamous cell carcinomas from adenocarcinoma.

Methods: Thirty peripheral lung squamous cell carcinomas and 40 adenocarcinomas were examined with dynamic contrasted CT, enhancement at various phases recorded, based on which the time-intensity curves were produced. The enhancement patterns were compared and analyzed.

Bladder tumors: dynamic contrast-enhanced axial imaging, multiplanar reformation, three-dimensional reconstruction and virtual cystoscopy using helical CT.

Background: There have been few studies to evaluate the effects of helical CT on bladder tumor. This study was to evaluate the clinical applications of helical CT dynamic contrast-enhanced axial imaging, multiplanar reformation (MPR), three-dimensional (3D) reconstruction and virtual cystoscopy (CTVC) in bladder tumors.

Methods: The precontrast and four-phase postcontrast helical CT scans were performed in 42 patients with bladder tumors confirmed by conventional cystoscopy and pathology.

[Value of helical CT in bladder tumor].

Objective: To evaluate the diagnostic effect of helical CT on bladder tumor.

Methods: In 28 patients with bladder tumors which had been confirmed by conventional fiberoptic cystoscopy (FC) and pathology, precontrast and four-phase postcontrast helical CT scans were performed with multiple plane reconstruction (MPR), three dimensional (3D) reconstruction and CT virtual cystoscopy (CTVC) images constructed from the volumetric data of the excretory phase. The results were then compared with the findings of conventional fiberoptic cystoscopy and surgery through a double-blind manner.