Correlation between CT dynamic enhanced scanning parameters and serum tumor markers before and after radiofrequency ablation in patients with lung cancer

Objective:To study the correlation between CT dynamic enhanced scanning parameters and serum tumor markers before and after radiofrequency ablation in patients with lung cancer.Methods:60 patients with advanced non-small cell lung cancer who were treated in this hospital between January 2015 and January 2017 were divided into control group(n=30)and observation group(n=30)by random number table method.Control group received conventional intravenous chemotherapy,and observation group received intravenous chemotherapy combined with radiofrequency ablation.The differences in CT dynamic enhanced scanning parameter levels and serum tumor marker contents were compared between the two groups of patients before and after treatment.Pearson test was used to evaluate the correlation between CT dynamic enhanced scanning parameters and serum tumor marker contents in patients with advanced non-small cell lung cancer.Results:Before treatment,the differences in CT dynamic enhanced scanning parameter levels,non-organ-specific tumor marker contents and vascular tumor marker contents were not statistically significant between the two groups of patients(P>0.05).After treatment,CT dynamic enhanced scanning parameters PH and perfusion value levels of observation group were lower than those of control group(P<0.05);serum non-organ specific tumor markers CA125,CA153,CEA and CYFRA21-1 contents of observation group were lower than those of control group;serum vascular tumor markers VEGF,Ang-2,HIF-1 and MMP-9 contents were lower than those of control group(P<0.05).Pearson test showed that CT dynamic enhanced scanning parameters PH and perfusion value levels in patients with non-small cell lung cancer were positively correlated with serum non-organ specific tumor marker and vascular tumor marker contents.Conclusion:Adjuvant radiofrequency ablation can significantly reduce the tumor malignancy of patients with advanced non-small cell lung cancer.

Study of Scanning Dose Optimization on Chest and Abdomen Enhanced CT Imaging

Objective: To investigate the correlation between radiation dose and radiation risk when patients are scanned by 64-slice spiral CT. Materials and Methods: SPSS 17.0 is used statistically for analyzing the patient’s scanning parameters, radiation dose of monitoring and examining the patients who are scanning of their abdomen, chest and pelvic in our affiliated hospital. Results: SPSS statistical analysis shows that the factor related to radiation dose is scanning layer;the basic characteristics such as height and heart rate don’t affect the patient’s scan dose directly. Conclusion: Increasing the delay time after injection can reduce the scan numbers and monitoring layers of the machine, thus reduce the patient’s radiation dose and tube’s exposure time.

Diagnostic Value of Spiral CT Chest Enhanced Scan in Adult with Active Pulmonary Tuberculosis

Aim:To explore the diagnostic value of spiral CT chest enhanced scan for adults with active pulmonary tuberculosis.Methods:The clinical data of 60 adult patients with active pulmonary tuberculosis who were treated in our hospital from January 2018 to November 2019 were retrospectively analyzed.All patients underwent conventional chest radiography and spiral CT chest enhanced scan.The number of tuberculosis diagnosis,the detection rate of special site lesions,and the detection rate of active pulmonary tuberculosis signs by the two methods were compared.Results:In 60 patients,the pathological results confirmed the existence of 75 tuberculosis lesions.The detection rate of spiral CT was 98.67%,which was not statistically significant compared with the detection rate of 92.00%(P>0.05)in the conventional chest X-ray.The detection rate of spiral CT enhanced scans for tuberculosis lesions in special sites was 100.00%,which was significantly higher than that of conventional chest X-ray of 7.69%,and the accuracy rate of active pulmonary tuberculosis signs was 98.85%higher than that of conventional chest X-ray of 79.31%.P<0.05).The difference was statistically significant(P<0.05).Conclusion:Spiral CT chest enhanced scan can not only find special tuberculosis lesions that cannot be detected by conventional chest radiography,but also accurately determine active pulmonary tuberculosis in adults,which is of high diagnostic value.

Observations on the Diagnostic Effects of CT Examination(Enhanced Scan)on Hemorrhage Corpus Luteum Cyst

Objective:To investigate the diagnostic effects of enhanced CT scan on hemorrhage corpus luteum cyst(HCLC).Methods:The clinical data of 24 patients with hemorrhage corpus luteum cyst diagnosed by surgery and pathology in our hospital were collected.All patients received enhanced CT scan to evaluate the diagnostic value of CT.Results:The average diameter of the cysts in this group of patients was 5.1cm by CT.Further detection of the ruptured cyst wall showed that there was a liquid lowdensity shadow.Some of the cysts were accompanied by signs of increased density,indicating the presence of blood clots;all patients received surgical treatment.Intraoperative ultrasound examination of the cysts had an average diameter of 5.2cm and a wall of 0.2~0.4mm.Among them,19 cases of cysts contained"coffee-colored"liquid with varying degrees of blood clots,and 5 cases had no blood clots in the cysts but there were a lot of blood clots beside the cysts.Conclusion:The application of enhanced CT scan in patients with hemorrhage corpus luteum cyst is of great value.It can provide accurate data reference for clinical treatment and is worthy of promoting its clinical application.

Spiral multi-phase CT in evaluating resectability of pancreatic carcinoma

Objectives: To evaluate the specific manifestations of pancreatic carcinoma on spiral multi-phase CT and its resectability before operation. Methods: Ninety-seven patients were confirmed oper- atively and pathologically. Enhanced CT scan was performed with intravenous injection bolus of ap- proximately 75-120 ml (1-1.5 ml/kg body weight) contrast medium at a rate of 2.5-3 ml/s. In 68 pa- tients receiving dual-phase scan, the delayed scan time of arterial and venous phases was 18-20 s and 60-70 s, respectively, and in 29 patients receiving three-phase scan, the delayed scan time of arterial, pancreatic and portal venous phases was 18 s, 40 s and 75 s, respectively, with a slice of 3-5 mm thick- ness, a pitch of 1-1.5, and a reconstruction interval of 2.5-4.8 mm. Results: Positive and negative predictive values of un- resectable tumors were 97.65% and 75.86%, respec- tively. The sensitivity and accuracy were 90.67% and 90. 72%, respectively. Positive predictive values of dual-phase and three-phase were 95.83% and 100%, respectively; negative predictive values were 75% and 77.78%, respectively. Conclusions: Spiral multi-phase CT is superior in re- vealing the involvement of peripancreatic vessels, the invasion of the neighboring organs, the size, shape and range of carcinoma, and the metastasis of liver and lymph node. The predictability of resection is obviously increased for patients with pancreatic car- cinoma.

Multi-phase helical CT in diagnosis of early hepatocellular carcinoma

OBJECTIVES: To analyze the characteristics of early hepatocellular carcinoma by using multi-phase helical CT and assess the value of this method. METHODS: Multi-phase helical CT findings were reviewed double-blindly by radiologists. RESULTS: Altogether 24 lesions were found in 21 patients. In plain CT, the lesions were seen as hypodense or isodense areas. After contrast enhancement, 87.5% of the lesions showed regular or irregular hyperdense enhancement, whereas 12.5% demonstrated tumor vessels in arterial phase, which became hypodensed or isodensed nodules in portal phase or the hypodensed in delayed phase. The prevalence of density changes showed a hypo-hyper-hypo and hypo-hypo pattern. CONCLUSIONS: Multi-phase helical CT could reflect the blood supply of early hepatocelluar carcinoma, and is also convenient for the differential diagnosis of hepatic cavernous angioma, metastatic tumor, hepatic nodulous hyperplasia, and hepatic inflammatory granuloma.

CT增强扫描灰度直方图纹理分析技术对肺癌患者术前恶性程度评估及对预后的预测价值

目的探究CT增强扫描灰度直方图纹理分析技术对肺癌患者术前恶性程度评估及对预后的预测价值。方法选择2018年5月至2022年9月在我院就诊的且经术后病理证实的肺癌患者580例作为研究对象。依据术后病理分期,将研究对象分为高分化组(183例)、中分化组(195例)、低分化组(202例)。根据预后情况,将其分为预后良好组(356例)和预后不良组(224例)。由2名医师提取患者CT增强扫描灰度直方图纹理参数。受试者工作特征(receiver operating characteristic,ROC)曲线分析特征参数对肺癌患者术前恶性程度的诊断效能及预后的预测价值。多因素Logistic回归分析预后不良的重要影响因素并构建人工神经网络模型。Pearson分析检验参数间的相关性。结果均值、10%分位、50%分位等参数在高、中、低分化三组中有显著差异。三个参数对评估肺癌患者恶性程度均具有一定的诊断效能,且三者联合诊断效能最佳。均值、10%分位、50%分位是预后不良的保护因素,三者联合预测肺癌患者的曲线AUC值大于各指标单独预测的AUC值。ROC曲线和累积增益图表明该模型预测能力良好。纹理特征参数中,69.44%的参数具有相关性。结论CT增强扫描灰度直方图纹理参数在一定程度上反应肺癌患者术前恶性程度信息,给术前预测以及预后提供了重要方法。

CT增强检查中碘对比剂外渗病人皮肤损伤风险预测模型的构建

目的:探讨CT增强检查中碘对比剂外渗病人皮肤损伤发生风险的影响因素,构建并验证风险预测模型。方法:采用便利抽样法抽取2023年1月—7月在广西医科大学第一附属医院放射科接受CT增强检查的碘对比剂外渗病人286例作为研究对象,自制CT增强检查碘对比剂外渗病人皮肤损伤风险调查问卷对病人进行调查,采用单因素分析、Logistic回归分析筛选CT增强检查中碘对比剂外渗病人皮肤损伤发生风险的影响因素,构建风险预测模型,绘制列线图,运用受试者工作特征(ROC)曲线、校准曲线评价模型。结果:CT增强检查中碘对比剂外渗病人皮肤损伤发生率为18.5%。Logistic回归分析结果显示,过敏史、碘对比剂黏稠度、碘对比剂注射速度是CT增强检查中碘对比剂外渗病人皮肤损伤的影响因素(P<0.05),基于上述结果构建的预测模型建模组ROC曲线下面积为0.842[95%CI(0.770,0.915)],约登指数为0.667,最优截断值灵敏度为0.893,特异度为0.774;验证组ROC曲线下面积为0.924[95%CI(0.872,0.975)],约登指数为0.793,最优截断值灵敏度为0.891,特异度为0.902。Hosmer-Lemeshow检验结果显示,χ2=9.566,P=0.221 5,校准曲线与参考线相接近。结论:CT增强检查中碘对比剂外渗病人皮肤损伤风险预测模型预测效能良好,可为医务人员制订个性化的预防措施提供参考。

比较腹盆腔增强CT、盆腔MRI平扫在正确预测淋巴结状态方面的诊断性能

目的探讨在卵巢癌淋巴结转移诊断中,腹盆腔增强CT与盆腔MRI平扫的诊断性能对比。方法选取卵巢癌患者46例作为研究对象,安排接受腹盆腔增强CT与盆腔MRI平扫,以病理结果为参照计算两种方法的灵敏度、特异度、阳性预测值以及阴性预测值。结果CT扫描检查结果显示,腹盆腔增强CT在卵巢癌盆腔淋巴结转移诊断中,灵敏度为45.00%,特异度为73.08%;盆腔MRI平扫在卵巢癌盆腔淋巴结转移诊断中,灵敏度为60.00%,特异度为80.77%;腹盆腔增强CT联合盆腔MRI平扫在卵巢癌盆腔淋巴结转移诊断中,灵敏度为85.00%,特异度为92.31%。结论在卵巢癌淋巴结转移诊断中,相较于腹盆腔增强CT,盆腔MRI具有较高的诊断灵敏度和特异度,但两者联合运用取得的诊断效能更高。

术前多排螺旋CT三期增强扫描对非小细胞肺癌纵隔淋巴结转移的诊断价值

目的探讨多排螺旋CT(MSCT)三期增强扫描对非小细胞肺癌(NSCLC)纵隔淋巴结转移(MLNM)中的术前诊断价值。方法回顾性分析80例NSCLC患者的临床资料,术前均行MSCT三期增强扫描,以术后病理结果为金标准,使用Kappa一致性检验评价MSCT三期增强扫描在术前诊断MLNM的诊断效能。结果术后病理检查证实80例NSCLC患者中,N0期31例,N1期24例,N2期25例,其中MLNM 25例(31.25%);术前MSCT诊断N0期34例,N1期24例,N2期22例,术前MSCT对NSCLC患者N分期诊断与术后病理一致性一般(Kappa=0.735);25例合并MLNM患者中,术前MSCT确诊19例,其对NSCLC患者MLNM的诊断与病理结果一致性一般(Kappa=0.531),其诊断的灵敏度、特异度、准确度、阳性预测值和阴性预测值分别为76.00%、80.00%、78.75%、63.33%和88.00%;纵隔淋巴结转移率在不同肿瘤直径、胸膜凹陷与否、不同肿大淋巴结位置、累及粗大肺静脉与否以及不同淋巴结短径的NSCLC患者间比较均有统计学意义(P<0.05)。结论术前MSCT三期增强扫描诊断NSCLC患者MLNM具有一定的准确性,结合原发病灶大小、胸膜凹陷、肿大淋巴结位置、累及粗大肺静脉等多方面信息可为淋巴结清扫提供重要参考。

不同对比剂流速对肝癌患者CT增强扫描图像的影响

目的 探讨不同对比剂流速对肝癌患者CT增强扫描图像的影响。方法 选取2019年1月至2022年12月于医院收治的156例肝癌患者为研究对象,根据随机数字表法分为试验组与对照组,每组78例。所有患者均行CT增强扫描,碘海醇注射液剂量为100 ml,试验组对比剂流速为2.0~2.5 ml/s,对照组对比剂流速为3.5~4.0 ml/s,记录两组不良反应发生情况、影像学特征、辐射剂量与图像质量。结果 试验组不良反应发生率低于对照组(P <0.05);所有患者图像均能显示4~6级肝血管分支;两组图像质量评分比较,差异无统计学意义(P>0.05)。试验组图像信噪比和对比噪声比低于对照组(P<0.05);两组剂量长度乘积与有效剂量比较,差异无统计学意义(P>0.05)。两组动脉期、门脉期、平衡期的病灶检出率比较,差异无统计学意义(P>0.05)。结论 CT增强扫描中对比剂流速降低不会影响图像质量及病灶检出率,且不增加辐射剂量,但可降低不良反应发生率、图像信噪比和对比噪声比。

CT和MRI动态增强扫描诊断和评估原发性肝癌患者微血管浸润价值研究

目的研究使用电子计算机断层扫描(CT)和磁共振(MRI)动态增强扫描诊断和评估原发性肝癌(PLC)患者微血管浸润(MVI)的价值。方法2020年1月~2023年1月我院收治的PLC患者50例,术前均接受腹部CT和MRI检查,记录肿瘤边缘模糊征象、瘤内新月征、静脉浸润的双预测因子(TTPVI)、门静脉癌栓(PVTT)和表观弥散系数(ADC)。行肝叶切除术治疗,取术后组织行病理学检查诊断MVI。结果经术后组织病理学检查,诊断肝细胞癌(HCC)32例和胆管细胞癌18例,存在MVI者29例,无MVI者21例;CT检查MVI患者肿瘤边缘模糊、局部外凸结节、包膜不完整、多结节融合、瘤内新月征、TTPVI和PVTT等影像学征象占比分别为82.8%、17.2%、31.0%、17.2%、13.8%、65.5%和17.2%,显著高于无MVI患者(分别为14.3%、4.8%、4.8%、4.8%、0.0%、9.5%和0.0%,P<0.05);MRI检查MVI患者肿瘤边缘模糊、局部结节、包膜不完整、多结节融合、瘤内新月征、TTPVI和PVTT等影像学征象占比为89.7%、24.1%、37.9%、27.6%、13.8%、72.4%和24.1%,显著高于无MVI患者(分别为23.8%、9.5%、9.5%、9.5%、0.0%、14.3%和0.0%,P<0.05);经Logistic回归分析显示,CT和MRI检查发现病灶边缘模糊、TTPVI和PVTT是PLC患者发生MVI的独立影响因素(P<0.05)。结论CT和MRI动态增强扫描可通过特殊征象判断PLC患者MVI的存在,可帮助临床医生做出合理的诊治策略。

动态增强CT扫描对胃癌术前分期的诊断效能分析

目的 探讨动态增强CT扫描诊断胃癌的效能及其术前TNM分期与术后病理检查结果的一致性。方法 选取邓州市中心医院2021年10月至2023年7月收治的经术后病理活检证实为胃癌患者87例,统计胃癌患者动态增强CT征象及分期结果,分析动态增强CT对胃癌的诊断价值,分析动态增强CT扫描对胃癌术前TNM分期的诊断与术后病理诊断的一致性。结果 87例胃癌患者中,动态增强CT扫描检出胃癌患者85例,胃癌检出率为97.70%,漏诊率为2.30%;动态增强CT扫描与术后病理检查分型结果的一致性Kappa值为0.933;动态增强CT扫描胃癌术前T、N及TNM期与术后病理检查结果的一致性分析,Kappa值分别为0.917、0.906、0.908,均>0.75,具有较高的一致性。结论 动态增强CT扫描可显著提高胃癌检出率,降低漏诊率,其术前TNM分期与术后病理检查结果一致性较高,具有较高的临床应用价值。

CT增强扫描与磁共振检查诊断肝血管瘤和肝细胞癌价值分析

目的研究CT与磁共振(MRI)增强扫描诊断肝血管瘤(HH)和肝细胞癌(HCC)的价值。方法2020年6月~2022年6月淮安市第一人民医院诊治的HH患者32例和HCC患者37例,常规接受CT和MRI增强扫描,经手术或穿刺取得肝组织,行病理学检查。采用Kappa检验评定诊断方法之间的一致性,应用MedCalc15.1统计学软件绘制受试者工作特征曲线(ROC),计算曲线下面积(AUC),评估诊断效能。结果以病理学检查为诊断的金标准,CT增强扫描发现29例(78.4%)HCC和24例(75.0%)HH,而MRI扫描发现35例(94.6%)HCC和29例(90.6%)HH;经Kappa一致性检验,CT和MRI扫描与病理学诊断HH和HCC具有一致性(Kappa=0.532,P<0.05和Kappa=0.749,P<0.05);MRI扫描诊断肝内占位性的灵敏度、特异度和准确性分别94.6%、90.6%和92.8%,显著优于CT诊断(分别为78.4%、75.0%和76.8%),而两者联合诊断并不能显著提高诊断效能(分别为90.6%、90.6%和92.8%)。结论临床在鉴别原发性肝癌与HH困难时,应首先进行MRI检查。

光谱CT单期增强扫描鉴别左心耳血栓与血流淤滞的临床初探

目的:评估光谱CT单期增强检查对于鉴别左心耳血栓和血流淤滞的应用价值。方法:回顾性收集2021年9月至2023年3月因房颤在我院行左心房CT血管成像检查的患者共86例。每例患者均在Philips IQON Spectral CT接受双期增强扫描;以双期增强扫描诊断结果为参考标准,定量测量单期左心耳充盈缺损区碘浓度。采用独立样本t检验比较血栓及血流淤滞处碘浓度的差异。结果:入组患者22例,其中诊断为左心耳血栓2例,诊断为血流淤滞16例,诊断为血栓合并血流淤滞4例。增强第一期图像生成的碘浓度图中,血栓处碘浓度[(0.68±0.47)mg/mL]明显低于血流淤滞处[(3.51±1.25)mg/mL,P<0.001],经过受试者工作特征曲线分析得到截断值1.80 mg/mL时有较高鉴别诊断效能。结论:光谱CT单期增强扫描碘浓度测定可帮助鉴别左心耳血栓和血流淤滞。

对比剂个性化在肝脏增强CT扫描的初步研究

目的探讨对比剂个性化在肝脏增强CT应用的图像质量及可重复性。方法肝脏三期增强受检者以个性化方案扫描,评价图像质量及肝实质期强化效应可重复性。结果192例受检者实际单位体重碘剂量(374.8±52.1)mgl/Kg,实际注射碘流率(1138.0±130.9)mgl/s,有效碘总量(21320.0±3017.7)mgl,肝脏EU肝实质期为(53.2±7.0)Hu。主动脉强化、动脉期时机、肝实质期强化满足诊断分别约89.06%、94.3%、97.9%;医师间主动脉强化(χ^(2)=3.333)与扫描时机(χ^(2)=1.833)、肝实质期强化效应(χ^(2)=7.667)评价未见显著差异(均P≥0.05),医师评价高度一致(kappa值分别为0.861,0.803,0.914,均P=0.000),样本均数与50Hu比较未见统计差异(t=1.745,P=0.083),变异系数为13.13%,其中16例受检者两次扫描肝实质EU分别为(49.8±6.4)Hu、(50.3±6.7)Hu,差值均数(-0.5000±2.8432)Hu与0比较未见统计差异(t=-0.703,P=0.493)。结论对比剂个性化扫描的肝脏图像质量优良、可重复性较好,易于推广应用。

综合护理在小儿腹部增强CT检查中的应用效果研究

目的 探讨综合护理对小儿腹部增强CT检查中的护理价值。方法 在福建省妇幼保健院2020年1月至2021年1月入院的患儿中,对小儿腹部增强CT检查病例资料进行回顾性分析,收集不同护理方法下的相关信息,观察组属于综合护理,而对照组为常规护理。对两组患者不良反应发生率、护理质量评分、CT检查图像差发生率、护理总满意度指标进行比较。结果 观察组患儿护理后发生不良反应发生率、CT检查图像差发生率均低于对照组(均P <0.05);观察组护理人员护理质量评价总分、护理质量满意度均高于对照组(均P <0.05)。结论 小儿腹部增强CT检查可在综合护理辅助下,提升护理质量,建立和谐的医患关系,增强患儿检查中的舒适度,提高护理满意度。

标准化医护沟通模式联合流程化沟通模式在低文化程度、高龄行增强CT检查水化患者中的应用

目的 探讨在低文化程度、高龄行增强CT检查水化患者中应用标准化医护沟通模式(SBAR)联合流程化沟通(CICARE)模式的效果。方法 选取2020年12月至2022年11月在温州医科大学附属第二医院全科病房拟接受增强CT水化的84例低文化程度、高龄患者,采用随机数字表法将其分为干预组与对照组,各42例。对照组采用CICARE模式沟通,干预组在对照组基础上联合SBAR模式沟通,沟通后指导患者进行水化干预。比较两组水化依从性及合格率、肾功能指标、尿p H值变化情况,并比较两组造影剂肾病发生率及对护理工作的满意度。结果 干预组水化依从率、合格率高于对照组,差异有统计学意义(P<0.05)。两组各时间点尿p H值比较,差异有统计学意义(P<0.05);干预组造影后各时间点尿p H值低于对照组,差异有统计学意义(P<0.05)。干预组造影剂肾病发生率低于对照组,差异有统计学意义(P<0.05)。干预组对护理工作的整体满意度优于对照组,差异有统计学意义(P<0.05)。结论 对低文化程度、高龄行增强CT检查水化患者中应用SBAR联合CICARE沟通模式干预可提高其水化的依从性及合格率,促进尿p H值恢复正常水平,减少对肾功能的影响及造影剂肾病的发生,提高患者满意度。

三期增强CT扫描联合血清AFP和VEGF水平诊断肝细胞癌患者临床研究

目的探讨多层螺旋CT(MSCT)三期增强扫描联合血清甲胎蛋白(AFP)和血管内皮生长因子(VEGF)水平对肝内占位性病变的诊断价值。方法2021年1月~2022年12月我院诊治的肝内占位性病变患者82例,均接受MSCT平扫和三期增强扫描检查,采取细针穿刺活检或手术组织行常规病理学检查。采用免疫化学发光法检测血清AFP水平,采用ELISA法检测血清VEGF水平。绘制受试者工作特征曲线(ROC)并计算曲线下面积(AUC)分析三期增强CT扫描联合血清AFP和VEGF水平诊断肝细胞癌(HCC)的效能。结果在本组82例肝占位患者中,病理学检查诊断肝细胞癌(HCC)43例,局灶性增生性结节(FPN)39例,MSCT扫描诊断原发性肝癌(PLC)36例,诊断良性病灶46例;HCC病灶平扫及增强动脉期、门静脉期和延迟期CT值分别为(33.2±1.7)、(68.2±2.4)、(61.5±1.2)和(31.9±1.6),均显著低于FPN病灶【分别为(40.1±2.5)、(92.5±3.1)、(76.8±2.6)和(63.2±3.7),P<0.05】;HCC患者血清AFP和VEGF水平分别为(310.5±25.3)ng/mL和(97.6±62.1)ng/L,均显著高于FPN患者【分别为(23.6±3.2)ng/mL和(65.4±19.8)ng/L,P<0.05】;MSCT诊断恶性病变的灵敏度和特异度分别为81.4%和97.4%,采用CT联合血清指标诊断可以将诊断的灵敏度和特异度都提高到97.4%。结论应用三期增强CT扫描扫描联合血清AFP和VEGF水平对判断肝内占位性病变的性质有帮助,值得进一步研究。

胸部CT增强扫描、MRI检查对良恶性前纵隔肿瘤的鉴别诊断价值

目的 探讨胸部CT增强扫描、MRI检查对良恶性前纵隔肿瘤的鉴别诊断价值。方法 选取127例经病理检查确诊的前纵隔肿瘤患者,根据病理结果分为良性组(n=82)和恶性组(n=45),全部患者均采取胸部CT增强扫描,其中24例患者同时进行了MRI检查。比较良性组和恶性组患者的CT、MRI影像学特征,并比较两种检查方法的诊断效能。结果 良性组与恶性组患者CT影像学特征中形态、包膜、边界、密度、强化程度、强化均匀情况比较,差异均有统计学意义(P﹤0.05)。恶性组与良性组患者MRI影像学特征中形态、分布、肿瘤成分、边界比较,差异均有统计学意义(P﹤0.05)。胸部CT增强扫描诊断恶性前纵隔肿瘤的灵敏度以及准确度均高于MRI,特异度低于MRI。结论 胸部CT增强扫描、MRI检查对恶性前纵隔肿瘤均有一定的诊断效能,且CT增强扫描的诊断效能更好,为进一步避免检查中出现漏诊和误诊的情况,可考虑进行联合诊断。