医学影像学杂志2024，Vol.34Issue(9) ：45-48.

CT高分辨算法与标准算法图像重建密度测量对亚厘米肺结节鉴别诊断的临床价值

The clinical value of CT high-resolution algorithm and standard algorithm image reconstruction density measurement in the differential diagnosis of subcentimeter pulmonary nodules

姜夏童 程琼琼 庞闽厦
医学影像学杂志2024，Vol.34Issue(9) ：45-48.
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  • NSTL
  • 万方数据

CT高分辨算法与标准算法图像重建密度测量对亚厘米肺结节鉴别诊断的临床价值

The clinical value of CT high-resolution algorithm and standard algorithm image reconstruction density measurement in the differential diagnosis of subcentimeter pulmonary nodules

姜夏童 1程琼琼 2庞闽厦3
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作者信息

  • 1. 滨州医学院医学影像学院 山东 烟台 264003
  • 2. 山东第二医科大学医学影像学院 山东 潍坊 261053
  • 3. 滨州医学院附属胜利油田中心医院医学影像会诊中心 山东 东营 257000
  • 折叠

摘要

目的 探讨高分辨算法与标准算法重建图像对亚厘米肺结节CT值测量的差异性以及对良恶性鉴别诊断的价值.方法 选取我院有手术病理结果的高分辨算法薄层重建图像测量CT值≥0 HU(根据CT值定义公式,水的CT值为 0 HU)的亚厘米肺结节患者 98 例,且同时具有标准算法薄层重建图像.为进一步区分其内完全实性与少量含气结节,以水的CT值为界限,按照标准算法重建图像测量CT值结果≥0 HU(n=52)、<0 HU(n=46)分成两组,比较两组不同重建算法测得病灶CT值的差异,以及病理良恶性概率变化,分析诊断效能.结果 全部病灶高分辨算法CT值均高于标准算法,其差值在两组间差异有统计学意义(P<0.01).高分辨算法测得CT值≥0 HU的全部入组病例中,恶性占 37%(36/98),良性占 63%(62/98).采用标准算法测得的病灶CT值仍然≥0 HU的病灶共 52 例,良性占比升至 85%(44/52);病灶CT值变为<0 HU共 46 例,恶性占比升至 61%(28/46).ROC曲线显示标准算法图像CT值对病灶良恶性的鉴别诊断效能高于高分辨算法.结论 采用标准算法重建图像观察和测量病灶的密度较高分辨算法更为真实准确.

Abstract

Objective To investigate the difference between high-resolution and standard image reconstruction on sub-centimeter lung nodule CT value measurement,and its influence on differential diagnosis of benign and malignant pulmonary nodules.Methods Ninety-eight patients with subcentimeter pulmonary nodules with CT value≥0 HU(according to the defini-tion formula of CT value,the CT value of water is 0 HU)were selected by high-resolution thin-layer reconstruction images with surgical and pathological results in our hospital,and thin-layer reconstruction images with standard algorithm were also avail-able.In order to further distinguish the completely solid nodular from the small number of air-bearing nodular,CT values of water were taken as the boundary,and the reconstructed images were divided into two groups according to the standard algorithm to measure CT values≥0 HU(n=52 cases)and<0 HU(n=46 cases).The differences of CT values measured by different reconstruc-tion algorithms and the pathological benign and malignant probability changes between the two groups were compared,and the di-agnostic efficiency was analyzed.Results All the CT values of the high-resolution algorithm were higher than those of the stan-dard algorithm,and the difference was statistically significant between the two groups(P<0.01).Among all the enrolled cases with CT values≥0 HU measured by high-resolution algorithm,37%(36/98)were malignant and 63%(62/98)were benign.There were 52 cases of lesions whose CT value was still≥0 HU measured by standard algorithm,and the benign proportion in-creased to 85%(44/52).The CT value of the lesions was<0 HU in 46 cases,and the malignant rate increased to 61%(28/46).ROC curve showed that the CT value of standard algorithm was more effective than that of high resolution algorithm in differentiat-ing benign and malignant lesions.Conclusion Using standard algorithm to reconstruct image to observe and measure lesion density is higher,and the resolution algorithm is more real and accurate.

关键词

亚厘米肺结节/体层摄影术,X线计算机/标准算法/高分辨算法

Key words

Sub-centimeter pulmonary nodules/Tomography,X-ray computed/Standard algorithm/High resolution algo-rithm

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出版年

2024
医学影像学杂志
山东医学影像学研究会,山东医学影像学研究所

医学影像学杂志

CSTPCD
影响因子：1.157
ISSN：1006-9011
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