Clinical Application of High-resolution CT Algorithm in Lung

Objective: To assess the quality of high-resolution computed tomography(HRCT) algorithm images versus HRCT scan images, and to investigate whether the HRCT algorithm image can replace HRCT scan. Methods: Eighty patients with lung were routine examined with GE Light Speed pro16-slice helical CT. The HRCT algorithm images were reconstructed based on routine scan. Three senior radiologists evaluated all HRCT algorithm and HRCT scan images. Results: No difference was found in the identification of CT findings of lung between HRCT algorithm and HRCT scan images, P(0.094)0.05. In 80 cases, the quality of HRCT algorithm image was similar to that of HRCT scan in revealing normal bronchus, artery and vein and all images were excellent and grade A. HRCT algorithm images were better than HRCT scan images in grade A and in multi-planar reformation, and to remedy for inadequacy of HRCT scan. HRCT algorithm could obtain shortened the scan time and reduced the radiation dose. Conclusion: HRCT algorithm of 16-slice helical CT scan could obtain high quality image, and shortened the scan time and reduced the radiation dose. HRCT algorithm can replace HRCT scan in 16-slice helical CT.