Head and Neck Imaging
The Application of Both Low-kV High-pitch and IRIS on Chest MSCT Examination
Author：SHANG Ya-jun, BI Chun-long, SUN Shu-xia
affiliation：Department of Radiology, Jiulongpo District Hospital of Tranditional Chinese Medicine, Chongqing 400080, China
PDFAbstract
Objective To study the clinical evaluation of both low-kV high-pitch and IRIS on chest MSCT examination radiation dose reduction. Methods 70 patients undergone chest MSCT examination were randomly divided into routine group(n=35,130 kV, Pitch 0.8, FBP)and low dose group(n=35, 110 kV, Pitch 2.0, IRIS). Retrospectively,the quality of the images and the radiation dose of two groups were compared by two reviewers. Results The subjective image quality score and objective evaluation index (SNR and CNR)of two groups has no significant difference(P＞0.05). The radiation dose of low dose group (CTDIvol, DLP, and ED) was lower than that of routine group (P<0.05). Conclusion The image quality of both low-kV high-pitch and IRIS on chest MSCT examination can meet diagnostic requirement, and obviously reduce radiation dose.
【Keyword】Chest; X-ray Computed Tomography; Low Dose
【Chart number】R445.3
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2016.01.020
Chinese journal of CT and MRI
th14Volume， th 1 Issue
2016Year01Month
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