Three-dimensional Imaging of Multi-slice Spiral CT in Bronchial Artery Correlative Study on Blood Supply of Central Lung Cancer and Its Clinical Significance

Objective: To evaluate three-dimensional bronchial artery imaging charactersin central lung cancer and applied values with multi-slice spiral CT (MSCT) to provide theoreticalevidence on blood supply and intervention therapy. Methods: Eighteen patients with central lungcancer underwent MSCT with real time helical thin-slice CT scanning. Three-dimensional bronchialartery reconstruction was done at the console work-station. The space anatomical characters ofbronchial artery were observed through different rotations. Results: For 6 cases, thethree-dimensional images of bronchial artery (33.33%) could exactly show the origins, the routes(lung inner segment and mediatism segment) and the diameters of bronchial arteries. Vision rate ofbronchial arteries was the highest in pulmonary artery stricture and truncation groups, and thevessels' diameter became larger apparently. These characters demonstrated blood supply of this kindof central lung cancer come from bronchial artery. Volume rendering images were the best ones amongthree-dimensional images. Conclusion: Three-dimensional imaging with MSCT in bronchial artery canreveal the anatomical characters of bronchial artery and provide theoretical evidence on bloodsupply and intervention therapy of central lung cancer.

Multi-slice spiral CT angiography in evaluating donors of living-related liver transplantation

BACKGROUND: During the past years, the number of liver transplantation has increased greatly, but the number of available organs has not increased. In view of the critical shortage of organs, the indications for living-related liver transplantation (LRLT) have broadened since experience with the procedure has been achieved. This study was undertaken to assess the value of multi-slice spiral CT (MSCT) angiography in evaluating the hepatic arterial and veinous anatomy of potential donors for LRLT. METHODS: MSCT was performed after intravenous injection of contrast material at 3 ml/s. The total dose was calculated as 2 ml/kg. Twenty LRLT donors (2 men and 18 women) were subjected to MSCT angiography of hepatic blood vessels. These were generated by volume rendering and maximum intensity projection, while curved planar reformation was added in 5 patients. RESULTS: We identified 10 important hepatic vascular variants in 9 of the 20 donors (4 arterial, 4 venous, and 2 portal venous variants). In hepatic arterial variants, two had a replaced right hepatic artery arising from the superior mesenteric artery, an accessory right hepatic artery from the superior mesenteric artery and a replaced left hepatic artery arising from the left gastric artery. In hepatic venous variants, three had an accessory inferior right hepatic vein and one had two accessory inferior right hepatic veins. In hepatic portal venous variants, two had trifurcation of the main portal vein. CONCLUSIONS: As a non-invasive and reliable method, MSCT angiography is of value in the clinical evaluation of LRLT donors. MSCT angiography should be recommended as a routine preoperative examination for potential LRLT donors.

Study on the combined value of multi-slice spiral CT in the diagnosis of elderly colorectal cancer colorectal cancer tumor markers

Objective:To investigate the value of tumor markers in colorectal cancer with multi-slice spiral CT in the diagnosis of elderly colorectal cancer.Methods:From January 2016 to September 2017 year period, 73 elderly patients with colorectal cancer treated in our hospital were selected as observation group;64 elderly patients with intestinal benign lesions were selected as control group during the same period. Serum samples were collected to detect contents of CEA, CA72-4, CA19-9 and CYFRA21-1 by Roche luminous immunoassay analyzer, and multi slice spiral CT was used.Results:Serum levels of CEA, CA72-4, CA19-9 and CYFRA21-1 levels of the observation group were significantly higher than that of the control group;the positive rate of CEA, CA72-4, CA19-9, CYFRA21-1 and their combined detection were all significantly higher than that of the control group;positive rate of MSCT in the observation group was higher than the control group;positive rates of tumor markers combining with MSCT examination of colorectal cancer were higher than that of combined detection of tumor markers and MSCT examination;but there was no significant difference in positive rate of combined detection of tumor markers and the positive rate of MSCT detection of colorectal cancer.Conclusion:Colorectal cancer tumor markers combined with multi-slice spiral CT in the diagnosis of colorectal cancer in elderly has important research value, can significantly improve the positive rate of diagnosis.

Value of Multi-slice Spiral CT in the Diagnosis and Resectability of Pancreatic Cancer

Objective:To analyze the value of multislice spiral CT in the diagnosis and resectability of pancreatic cancer.Method:56 patients with pancreatic cancer treated in our hospital from January 2018 to October 2019 were selected as the research subjects.All patients underwent multi-phase scanning by multislice spiral CT.According to the results of the images,observe whether the pancreatic cancer has affected the blood vessels surrounding the pancreas,evaluate the resectability based on the results of the examination,and analyze the final results of the operation which was taken as the standard.Results:all the 56 cases presented slightly low density or equal density,and 28 cases had complete outline.Multi-slice spiral assessment of patients’vascular invasion types found that 192 branches can be resected with 70 branches cannot;Multi-slice spiral assessment of the main arterial and venous invasion grades around the pancreas of the patients found that 212 branches can be resected with 50 branches cannot;Multi-slice spiral CT was used to evaluate the resectability of pancreatic cancer compared with surgical results.The accuracy of resectable types of vascular invasion was 72.52%;the accuracy of resectable vascular invasion grades was 79.39%.Conclusion:the application of multi-slice spiral CT in the diagnosis of pancreatic cancer can provide a clear understanding of the condition of vascular invasion and distant metastasis,and the accuracy of assessing resection can reach more than 70.00%,which provides a reference for clinical application.

Comparison of the Imaging Manifestations and Diagnostic Values of Multi-slice Spiral CT and Enhanced MRI Scans of Primary Liver Cancer(PLC)Intrahepatic Lesions

Objective:To compare and analyze the clinical diagnostic value of multi-slice spiral CT and enhanced MRI for primary liver cancer(PLC),and to summarize the imaging findings.Methods:The research subjects in this article were 50 patients with PLC who were admitted to our hospital from 2017 April to 2018 September.After the patients were admitted,they were examined by multi-slice spiral CT and enhanced MRI scanning,and the pathological diagnosis results were followed up.Relevant information was reviewed and analyzed.Results:The detection rate of multi-slice spiral CT was higher than that of MRI in the portal venous phase lesion detection.The difference was statistically significant(P<0.05).The detection rate of lesions in the arterial phase and delayed phase was not statistically significant(P>0.05);the diagnostic accuracy of multi-slice spiral CT was 85.96%,and the diagnostic accuracy of enhanced MRI scanning was 91.11%,which was not statistically significant(P>0.05).MRI scans showed the capsules of primary liver cancer better than CT,but the difference was not statistically significant(P>0.05).Conclusion:In conclusion,both multi-slice spiral CT and enhanced MRI can be used for the effective diagnosis of primary liver cancer intrahepatic lesions.The diagnostic value of the two is equivalent,but enhanced MRI has a slightly higher diagnostic accuracy and can be used as the preferred method.

多层螺旋CT检查诊断肠梗阻的应用及准确度评价

目的 研究在肠梗阻的临床诊断中应用多层螺旋CT检查的价值。方法 选取2022年1月—2023年12月新泰市人民医院收治的917例疑似肠梗阻患者为研究对象,所有受试者入院后均接受多层螺旋CT扫描。以临床表现、体格检查和影像学检查等综合诊断为金标准,分析多层螺旋CT的诊断符合率与诊断效能。结果 在疑似肠梗阻患者中,综合诊断确诊915例肠梗阻患者,多层螺旋CT诊断的准确度、灵敏度、特异度依次为99.89%(916/917)、100.00%(915/915)、50.00%(1/2),kappa值为0.666。CT对不同类型肠梗阻的诊断符合率为99.89%(914/915)。结论 多层螺旋CT检查对诊断肠梗阻具有较高的准确度、灵敏度。

踝关节骨折的低剂量螺旋CT影像检查效果

目的 探讨踝关节骨折的低剂量螺旋CT影像检查效果。方法 研究中60例踝关节骨折患者均在2020年1月—2023年7月随机抽选自我院;临床对所有踝关节骨折患者合理展开常规剂量螺旋CT扫描操作以及低剂量螺旋CT扫描操作,对两种方法的辐射剂量、诊断符合率、客观性图像质量指标以及图像清晰度分级展开比较。结果 与常规剂量CT诊断剂量长度乘积(DLP)以及CT容积剂量指数(CTDIvol)展开比较,低剂量CT测定结果均更低(均P <0.05);低剂量CT与常规剂量CT对于总诊断符合率、CT值、噪声值(SD)、图像信噪比(SNR)以及图像清晰度展开比较,结果均未呈现出统计学差异(P> 0.05)。结论 临床对踝关节骨折患者在实施CT诊断期间,发现低剂量CT以及常规剂量CT的诊断效果均较为明显,对于踝关节的损伤位置均可以明确诊断,但低剂量螺旋CT扫描运用,可将辐射剂量显著降低,所以安全性更高。

螺旋CT联合血清MMP-2、Periostin在肺癌早期诊断中的临床价值

目的探讨螺旋CT联合血清基质金属蛋白酶(MMP-2)、骨膜蛋白(Periostin)在肺癌早期诊断中的临床价值。方法选取于本院治疗的81例肺癌早期患者作为肺癌组,76例肺部良性病变患者为良性病变组,80例健康体检者为健康组(2020年12月~2023年11月)。比较肺癌组、良性病变组和健康组血清MMP-2、Periostin水平,ROC曲线分析血清MMP-2、Periostin在肺癌早期诊断中的价值,四格表法分析螺旋CT联合血清MMP-2、Periostin对肺癌早期的诊断价值。结果肺癌组血清MMP-2、Periostin水平高于良性病变组和健康组(P<0.05);血清MMP-2对肺癌早期诊断的曲线下面积(AUC)为0.754,最佳截断值为39.11 pg/mL,敏感度为75.31%,特异度为68.42%;血清Periostin对肺癌早期诊断的AUC为0.792,最佳截断值为40.63 ng/L,敏感度为77.78%,特异度为69.74%;螺旋CT检查对肺癌早期诊断的准确率为76.43%,敏感度为76.54%,特异度为76.32%;螺旋CT联合血清MMP-2、Periostin对肺癌早期诊断的准确率为85.35%,敏感度为93.83%,特异度为76.32%,三项联合的准确率、敏感度高于各指标单独诊断(P<0.05)。结论肺癌早期患者血清MMP-2、Periostin水平升高,螺旋CT联合血清MMP-2、Periostin对肺癌早期诊断准确率、敏感性优于各指标单独诊断。

62排螺旋CT及其后处理技术对胫骨平台骨折及其分型的诊断价值

目的探究62排螺旋CT及其后处理技术对胫骨平台骨折(TPF)的诊断价值以及对治疗方案选择的影响。方法纳入2021年1月至2022年12月在我院进行诊治的173例TPF患者,以手术病理诊断为金标准,比较X射线及CT扫描检查的诊断准确率、分型诊断准确率及骨折端塌陷程度准确率。结果CT及其后处理技术较X射线能够更清晰地显示骨折线的走向、骨折碎片的移位方向及关节面的塌陷程度,171例患者术中所见骨折形态均与CT及其后处理图像一致。X射线对TPF诊断准确率为93.64%,低于CT及其后处理技术对TPF诊断准确率(98.84%),差异有统计学意义(χ^(2)=6.474,P=0.011)。X射线对骨折端塌陷程度评估总准确率显著低于CT三维重建(65.32%vs.90.75%;χ^(2)=32.644,P<0.001)。CT及其后处理技术对TPF Schatzker分型总准确率为97.69%,高于X射线对TPF Schatzker分型总准确率(88.44%),差异有统计学意义(χ^(2)=11.462,P=0.001)。CT不同重建模式对TPF Schatzker分型诊断总准确率差异有统计学意义(χ^(2)=40.647,P<0.001),其中容积再现诊断准确率最高(96.53%)。结论应用CT检查及其后处理技术可有效评估TPF、关节面塌陷、骨折分型,并为临床决策提供影像学参考。

多排螺旋CT在骨化性肌炎影像诊断中的价值分析

目的:分析多排螺旋CT在骨化性肌炎影像诊断中的临床应用及诊断价值。方法:选取绥德县中医医院2022年9月-2023年12月收治的经病理活组织检查结果确诊为骨化性肌炎患者70例,入院后先进行超声检查,结果作为对照组,再进行多排螺旋CT检查,结果作为研究组,对比两组临床诊断价值。结果:研究组骨化性肌炎误诊率低于对照组,且诊断敏感度和准确度均高于对照组(P<0.05)。结论:在骨化性肌炎的临床诊断中,多排螺旋CT作为有效影像学检查应用方式,能够进一步明确病症病变程度和病变趋势,进而为骨科病症的临床预防和早期干预提供诊断依据,显著证实其使用价值。

高血压性脑出血CT检查的诊断价值及特点分析

目的:探讨高血压性脑出血CT检查的诊断价值及特点分析。方法:选取高血压性脑出血60例患者,时间2017年4月至2022年3月,患者均同意进行CT检查,均应用64排螺旋CT扫描仪进行检查。比较患者健侧、患侧的CT值,分析不同出血量的死亡率,比较CT检查结果与手术诊断结果。结果:患者患侧CT值显著高于健侧CT值(P<0.05);>50ml出血量患者的病死率大于31-50ml、15-30ml出血量患者病死率(P<0.05);CT检查结果显示,患者血肿体积在1.6-11.8cm^(3),平均血肿体积为6.8±0.9cm^(3),CT检查结果与手术诊断结果间对比无明显差异(P>0.05);60例高血压性脑出血患者共发生不同程度的46例占位效应。结论:使用64排螺旋CT扫描仪对高血压性脑出血患者病灶、颅脑进行扫描,能够拥有较为确切的检查结果,具有准确性高、无创性、快捷、方便等优点,血肿部位、血肿大小均可清晰可见,为患者后续手术治疗提供了可靠的依据,有助于降低患者的病死率,值得临床推广。

CT三维容积重建和X线对诊断肋骨骨折的效能分析

目的:探究CT三维容积重建和X线对诊断肋骨骨折的应用效能。方法:选取清涧县中医院放射科2021年12月至2023年12月收治的疑似肋骨骨折患者80例,所有患者入院后均进行胸部多层螺旋CT三维容积重建和X线检查,以最终手术结果作为诊断金标准,且金标准结果显示确诊肋骨骨折43例,未确诊或确诊其他病症37例,本研究对比两种影像学方法的误诊率、敏感度、特异度和准确度。结果:和X线检查相比,多层螺旋CT三维容积重建诊断病理误诊率更低(6.25%对比25.00%,P=0.001),敏感度更高(93.02%对比67.44%,P=0.000),特异度更高(94.59%对比83.78%,P=0.014),准确度更高(93.75%对比75.00%,P=0.000)。结论:胸部多层螺旋CT三维容积重建在诊断肋骨骨折方面效果优于X线,能够更清晰地明确骨折类型和细节,建议在临床实践中使用胸部多层螺旋CT三维容积重建以提高诊断准确性。

超声联合多层螺旋CT用于宫内节育器异位的临床诊断价值

目的探究超声联合多层螺旋CT(multi-slice spiral CT,MSCT)扫描用于宫内节育器异位的临床诊断价值。方法选取2020年10月—2023年10月无锡市第八人民医院收治的95例疑似宫内节育器异位患者为研究对象,均行超声及MSCT检查。以宫腔镜手术结果为金标准,分析超声、MSCT及联合检查对宫内节育器异位的诊断效能;比较两种检查方法及联合检查对不同类型、不同部位宫内节育器异位的诊断符合率。结果联合检查结果与宫腔镜手术结果的一致性(kappa=0.670)高于超声(kappa=0.310)、MSCT(kappa=0.411)。超声、MSCT及联合检查诊断宫内节育器异位的灵敏度、特异度比较,差异无统计学意义(P均>0.05);诊断准确度比较,差异有统计学意义(P<0.05)。联合检查诊断的灵敏度、准确度高于超声检查,差异有统计学意义(P均<0.05)。联合检查对宫内节育器下移的诊断符合率高于超声,差异有统计学意义(P<0.05)。联合检查对子宫肌壁异位的诊断符合率高于超声,差异有统计学意义(P<0.05)。结论超声联合MSCT对宫内节育器异位具有较高的诊断价值,且对不同类型及不同部位宫内节育器异位的检出率高于超声、MSCT单独检查。

多层螺旋CT联合磁共振胰胆管成像检查在胆道梗阻性疾病鉴别诊断中的效能

目的:观察多层螺旋CT(MSCT)联合磁共振胰胆管成像(MRCP)检查在胆道梗阻性疾病鉴别诊断中的效能。方法:选取2021年3月至2023年4月该院收治的138例胆道梗阻患者进行横断面研究。所有患者均给予MSCT、MRCP检查,以手术或病理活检结果为“金标准”,比较MSCT、MRCP单项及联合检查在胆道梗阻性疾病鉴别诊断中的效能。结果:经手术或病理活检结果显示,138例胆道梗阻患者中恶性55例,其中胰头癌14例,胆管癌34例,十二指肠乳头腺癌7例;良性83例,其中胆管结石79例,胆总管囊肿2例,肝外胆管压迫2例。MRCP检查结果显示,恶性57例,良性81例;MSCT检查结果显示,恶性52例,良性86例;MSCT联合MRCP检查结果显示,恶性66例,良性72例。MRCP联合MSCT检查诊断胆道梗阻性疾病的灵敏度、阴性预测值均高于MSCT、MRCP单项检查,漏诊率低于MSCT、MRCP单项检查,差异有统计学意义(P<0.05)。结论:MSCT联合MRCP检查鉴别诊断胆道梗阻性疾病的效能高于二者单项检查。

多层螺旋CT血管内成像检查在颈动脉狭窄诊断中的效能

目的:观察多层螺旋CT血管内成像(MSCTA)检查在颈动脉狭窄(CAS)诊断中的效能。方法:选取2020年6月至2022年5月该院收治的112例疑似CAS患者进行横断面研究,所有患者均给予MSCTA检查、彩色多普勒超声(CDUS)检查,以数字减影血管造影(DSA)检查结果为“金标准”,比较MSCTA检查与CDUS检查诊断CAS的效能,及对不同狭窄程度CAS的检出率。结果:经DSA检查结果显示,112例疑似CAS患者中阳性87例,其中轻度狭窄18例、中度狭窄17例、重度狭窄38例、闭塞14例;阴性25例,其中脑梗死15例,颈动脉瘤10例。MSCTA检查结果显示,阳性87例,阴性25例;CDUS检查结果显示,阳性82例,阴性30例。MSCTA检查与CDUS检查诊断CAS的特异度、误诊率、阳性预测值比较,差异均无统计学意义(P>0.05);MSCTA检查诊断CAS的灵敏度、准确度、阴性预测值均高于CDUS检查,差异有统计学意义(P<0.05)。MSCTA检查与CTA检查诊断轻中度狭窄CAS的检出率比较,差异无统计学意义(P>0.05);MSCTA检查诊断重度狭窄或闭塞CAS的检出率高于CDUS检查,差异有统计学意义(P<0.05)。结论:CTA检查诊断CAS的效能高于CDUS检查。

MSCT三维重组扫描诊断对跟骨骨折的诊断能效分析

目的:研究多层螺旋CT(MSCT)三维重组扫描诊断对跟骨骨折的诊断能效.方法:选取2019年1月-2020年11月我院收治的177例疑似跟骨骨折患者为研究对象.对所有受试者均开展X线检查及MSCT三维重组扫描检查.检查结果的分析均由医院2名经验丰富的影像科医生通过双盲法完成.分析不同诊断方法应用于跟骨骨折中的诊断效能.此外,比较不同诊断方法评估骨折程度、位移情况以及关节受累情况的效能.结果:X线检查共检出跟骨骨折113例,其中漏诊35例,误诊7例.MSCT三维重组扫描共检出跟骨骨折141例,其中漏诊0例,误诊0例.以临床结合辅助检查结果为金标准,MSCT三维重组扫描诊断跟骨骨折中的灵敏度、特异度及准确度分别高于X线检查,组间差异有统计学意义(P<0.05).MSCT三维重组扫描诊断单线骨折、粉碎性骨折、碎片位移及关节受累的准确率均高于X线检查,组间差异有统计学意义(P<0.05).结论:MSCT三维重组扫描诊断对跟骨骨折的诊断能效较高,具有较为理想的灵敏度、特异度以及准确度.

16排螺旋CT和X线对诊断肋骨隐匿性骨折的效果分析

目的 分析16排螺旋CT和X线对诊断肋骨隐匿性骨折的效果。方法 选取2020年6月—2022年6月本院接收的90例疑似肋骨隐匿性骨折患者作为研究对象,所有患者均接受X线检查和16排螺旋CT检查,以手术检查为金标准。比较不同诊断检查方式的检查结果、诊断准确率以及诊断效能。结果 90例疑似肋骨隐匿性骨折患者经过检查后,X线检查结果中有68例为肋骨隐匿性骨折患者,有22例非肋骨隐匿性骨折患者;16排螺旋CT检查结果中有76例为肋骨隐匿性骨折患者,有14例为非肋骨隐匿性骨折患者。16排螺旋CT检查的诊断准确率明显高于X线检查(P<0.05)。16排螺旋CT检查的诊断效能明显高于X线检查(P<0.05)。结论 诊断检查疑似肋骨隐匿性骨折时,X线检查和16排螺旋CT检查均可起到诊断效果,但后者的诊断准确率更高,诊断效能更好,便于为患者的诊治提供有效参考依据,值得研究使用。

多排螺旋CT检查诊断宫颈癌的有效性评价

目的探讨多排螺旋CT检查诊断宫颈癌的有效性。方法选取本院50例宫颈癌患者为研究对象,对其进行多排螺旋CT检查,以病理检查结果为金标准,分析多排螺旋CT检查的诊断效能。结果多排螺旋CT检查诊断检出率和病理检查检出率比较,差异无统计学意义(P>0.05);多排螺旋CT检查诊断的分期诊断准确率低于病理检查(P<0.05)。结论宫颈癌应用多排螺旋CT检查,虽然具有一定效果,但是分期诊断准确率低于病理检查,可进一步提高或结合其他手段以提高诊断准确率。

Using receiver operating characteristic curves to evaluate the diagnostic value of the combination of multislice spiral CT and alpha-fetoprotein levels for small hepatocellular carcinoma in cirrhotic patients

BACKGROUND： The various combination of multiphase enhancement multislice spiral CT （MSCT） makes the diagno- sis of a small hepatocellular carcinoma （sHCC） on the back- ground of liver cirrhosis possible. This study was to explore whether the combination of MSCT enhancement scan and alpha-fetoprotein （AFP） level ficiency for sHCC. could increase the diagnostic ef- METHODS： This study included 35 sHCC patients and 52 cir- rhotic patients without image evidence of HCC as a control group. The diagnoses were made by three radiologists em- ploying a 5-point rating scale, with postoperative pathologic results as the gold standard. Receiver operating characteristic （ROC） curve analysis was performed to evaluate the diag- nostic value of the three MSCT combination modes （arterial phase＋portal-venous phase, arterial phase＋delayed phase, arterial phase＋portal-venous phase＋delayed phase） and AFP levels for sHCC on the background of liver cirrhosis. RESULTS： The area under ROC curve （AUC）, sensitivity, and specificity of the combination of arterial phase＋portal- venous phase＋delayed phase were 0.93, 93%, and 82%, respectively. The average AUC of the arterial phase＋portal- venous phase＋delayed phase combination was significantly greater than that of the arterial phase＋portal-venous phase （AUC=0.84, P=0.01） and arterial phase＋delayed phase （AUC=0.85, P=0.03）. Arterial phase＋portal-venous phase had a smaller AUC （0.84） than arterial phase＋delayed phase （0.85）, but the difference was insignificant （P=0.15）. After combining MSCT enhancement scan with AFP, the AUC, sensitivity, and specificity were 0.95, 94%, and 83%, respectively, indicating a greatly increased diagnostic efficiency for sHCC. CONCLUSIONS： The combination of AFP and 3 phases MSCT enhancement scan could increase the diagnostic efficiency for sHCC on the background of liver cirrhosis. The application of ROC curve analysis has provided a new method and reference in HCC diagnosis.

人工智能结合多层螺旋CT检查在机关体检人群肺结节筛查中的应用

目的探讨人工智能(AI)技术结合多层螺旋CT检查在机关体检人群肺结节筛查中的应用价值。方法回顾性分析在本院健康体检的机关人群胸部CT筛查至少有1个直径≥3 mm的患者资料,所有数据均由AI技术结合人工阅片的方式进行分析。记录肺结节检出率,依据AI技术预测的风险值将结节患者分成不同风险组,分析和比较结节的基本特征。结果肺结节检出率为60.4%。高风险患者更容易表现为纯磨玻璃样结节、混合磨玻璃样结节。有肺结节人群的平均年龄大于无肺结节人群,差异有统计学意义(P<0.05)。不同风险组肺结节性质、形态、内部征象及外部征象等基本特征比较,差异有统计学意义(P<0.05)。结论多层螺旋CT检查胸部扫描有助于大规模体检人群肺结节的筛查,AI技术结合人工阅片的方式能够提高肺结节筛查的准确性。