低剂量联合迭代技术在喉部CT成像中的临床应用

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Abstract Objective: To explore the clinical application value of low radiation dose with adaptive statistical iterative reconstruction(ASiR) technique in CT imaging of larynx. Methods: Larynx CT scans of 220 patients were classified into 2 groups: FBP group (underwent routine dose filtered back projection, FBP), and ASiR50% group(underwent low dose with ASiR50%), 110 cases each. The data of all patients were transmitted to the workstation(AW 4.6), and were evaluated by three doctors with double-blind method. A t test was used to compare 2 groups of radiation dose and image quality evaluated. Results: ASiR50% group could obtain reduced the radiation dose(P＜0.001). CTDIvol, DLP, Total DLP and mSv reduced the rate of 80.22%(6.65/8.29), 82.95%(78.61/94.77), 82.95%(157.23/189.54) and 83.04%(0.93/1.12). Between ASiR50% and FBP group, there was no statistically significant difference shows ability of image quality(P＞0.05). Conclusion: Low radiation dose with ASiR50% on the basis of guarantee the quality of image reconstruction technology can significantly reduce the radiation dose.

Key words： Laryngeal diseases Tomography, X-ray computed

Received: 05 December 2016

PACS:	Ｒ767.1
	Ｒ814.42

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	Articles by authors
	ZHANG Ren-hua
	DENG Bo-hong
	LONG Jiang-tao
	HUANG He-ping
	HE Chen-bo

Cite this article:

ZHANG Ren-hua,DENG Bo-hong,LONG Jiang-tao, et al. Clinical application of low dose with iterative technique in CT imaging of larynx[J]. JOURNAL OF CHINA MEDICAL IMAGING, 2017, 28(8): 584-587.

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http://www.jccmi.com.cn/EN/ OR http://www.jccmi.com.cn/EN/Y2017/V28/I8/584

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