MRI影像报告与数据系统和磁共振扩散加权成像评价乳腺病变的临床应用研究
发布时间:2019-06-15 13:42
【摘要】:一、目的: (1)分析MRI BI-RADS分类中哪些术语与乳腺癌有关,进一步评估BI-RADS分类在乳腺良恶性病变中的诊断价值。 (2)通过分析DWI上乳腺良恶性病变的SI值、ADC值及BI-RADS分类和ADC值结合后乳腺良恶性病变的BI-RADS分类的调整,探讨DWI对乳腺良恶性病变的诊断价值,以及BI-RADS分类和DWI结合能否提高3.0T磁共振的诊断性能。 (3)通过测量浸润性导管癌的ADC值,并与病理结果对照,探讨DWI评价浸润性导管癌组织学分级的价值。 二、材料与方法: 1、研究对象 (1)第一部分及第二部分:采用同一组病例。收集山东大学省立医院在2012年5月至2013年12月期间,因钼靶、B超或临床查体发现乳腺病变而行MRI检查以进一步明确诊断的患者89例,其中26例因放化疗(11例)、或没有病理证实(15)被排除,最后63例纳入研究。患者年龄范围27-71岁,平均年龄43.78±10.20岁。所有病灶行MRI检查后,均经穿刺活检或手术病理证实。 (2)第三部分:收集山东大学省立医院在2012年5月至2013年12月期间,因钼靶、B超或临床查体发现乳腺病变而行MRI检查以进一步明确诊断的患者89例,其中53例因放化疗(11例)、没有病理证实(15例)、良性病变(22)、其他类型恶性肿瘤(5例)被排除,最后36例纳入研究。患者年龄范围27-71岁,平均年龄44.50±10.73岁。所有病灶行MRI检查后,均经穿刺活检或手术病理证实。 2、扫描方法 所有检查采用西门子3.OT磁共振成像仪(Magnetom verio, SIEMENS, Germany),乳腺专用8通道表面线圈。患者俯卧位,双侧乳腺同时扫描。检查时间为月经前的7-14天。扫描序列包括T1WI-TSE、T2WI-压脂、DWI及3DFLASH DYN T1WI加脂肪抑制序列。DWI选取b值0s/mm2及800s/mm2。 3、图像分析分析方法 (1)第一部分:两位医师在工作站上,根据BI-RADS分类对病灶的大小、形态学、血流动力学特征进行评估,并对病灶进行BI-RADS分类总体评估,计算诊断的敏感性、特异性及准确性。所有结果与病理结果对照。 (2)第二部分: DWI图像:目测评价:DWI图像上,乳腺肿块的信号强度分为等信号、略高信号及高信号。 SI值:在DWI图上,选择病灶最大径线层面为感兴趣区(Region of interest,ROI)层面,测量三次取其平均值。 ADC值测量:所有乳腺病变和正常乳腺的ADC值的测量在Siemens syngo工作站进行,利用工作站软件生成黑白ADC图,选取病灶最大径线层面为感兴趣区(Region of interest, ROI)层面,测量三次取其平均值。 BI-RADS分类与DWI结合:根据Pinker等人的研究方法,1-5类病灶根据相应的ADC阈值重新调整BI-RADS分类,并计算诊断的敏感性、特异性及准确性。 (3)第三部分: 病灶大小:在工作站上测量所有病灶的最大直径,测量三次取平均值。以2cm为界限,把病灶分为2组,记录个数,并与病理学相对照。 ADC值的测量:所有浸润性导管癌的ADC值的测量在Siemens syngo工作站进行,利用工作站软件生成黑白ADC图,选取病灶最大径线层面为感兴趣区(Region of interest, ROI)层面,测量三次取其平均值。 4、组织病理学 第三部分病例均为浸润性导管癌,组织病理学评估采用Nottingham改良的Bloom-Richardson分级系统,分为I级、Ⅱ级及Ⅲ级。 5、统计学分析 统计学分析采用SPSS17.0软件进行,数据测量结果以平均值士标准差(X士s)的形式表达。显著性水准均采用0.05(双侧),P0.05被认为有统计学意义,P0.001有显著统计学意义。 第一部分:对乳腺良恶性病变的大小进行独立样本的t检验。计数资料经χ2检验比较良恶性病灶间差异。计数资料如不符合χ2检验条件,采用Fisher's确切概率法。以病理结果为金标准,计算BI-RADS分类诊断乳腺癌的敏感性、特异性、阳性预测值、阴性预测值及准确性。 第二部分:对乳腺良恶性病变SI值进行独立样本的t检验。乳腺良性、恶性病变及正常腺体的ADC值均符合正态分布且方差齐性,行单因素方差分析(One-Way ANONA)均数之间的两两比较采用LSD检验。以恶性病变ADC值95%可信区间的上限值为良恶性判断阈值,计算相应的敏感性、特异性及准确性。采用ROC曲线分析评价ADC值诊断乳腺恶性肿瘤的最佳界点及诊断的敏感性、特异性及准确性。MRI BI-RADS分类与DWI结合后,以病理结果为金标准,以BI-RADS分类Ⅳ~Ⅴ为恶性病变,Ⅱ~Ⅲ为良性病变,计算这时3.0T磁共振诊断乳腺癌的灵敏性、特异性、阳性预测值、阴性预测值及准确性。 第三部分:Ⅰ级、Ⅱ级、Ⅲ级乳腺浸润性导管癌的ADC值均符合正态分布且方差齐性,行单因素方差分析(One-Way ANONA)。均数之间的两两比较采用LSD检验。低侵袭及高侵袭性乳腺癌ADC均值比较用t检验。采用ROC曲线分析评价ADC值诊断低侵袭乳腺癌的最佳界点和相应诊断的敏感性、特异性及准确性。 三、结果 第一部分:恶性肿瘤中形态不规则占87.80%,边缘不规则或毛刺分别为46.30%、43.90%,早期快速强化为90.20%,不均质强化为60.98%,Ⅱ型及Ⅲ型曲线各为48.78%、51.20%。良性肿瘤中,圆形或卵圆形肿块各为40.9%、36.3%,边缘清晰为77.27%,均质强化为59.09%。早期缓慢强化、低信号暗分隔、Ⅰ曲线仅见于良性肿瘤。边缘强化的病灶约93.33%为恶性肿瘤,Ⅲ型曲线的病灶中恶性肿瘤为90.20%。BI-RADS分类诊断乳腺癌的灵敏性、特异性、阳性预测值、阴性预测值及准确性分别为97.56%、77.27%、88.89%、94.44%、90.47%。 第二部分:恶性肿瘤、良性肿瘤及正常腺体的平均ADC值分别为(0.98±0.13)×10-3mm2/s、(1.40±0.16)×10-3mm2/s、(1.69±0.34)×10-3mm2/s。三者的ADC均值呈升高的趋势,且有显著性差异(F=88.31,p0.001,one-way ANOVA检验)。以ROC曲线分析所得1.218×10-3mm2/s为诊断阈值,诊断的敏感性、特异性和准确率分别为97.56%、81.82%、92.06%。BI-RADS分类与DWI结合后,诊断的敏感性、特异性和准确性分别为97.56%、86.36%、93.65%。 第三部分:组织学分级Ⅰ级、Ⅱ级及Ⅲ级病灶的ADC均值分别为(1.116±0.113)×10-3mm2/s、(0.955±0.047)×10-3mm2/s、(0.826±0.579)×10-3mm2/s,呈明显降低趋势(F=37.662,p0.001,one-way ANOVA检验)。低侵袭性乳腺癌的ADC均值是(1.116士0.113)×10-3mm2/s,较高侵袭性乳腺癌的ADC均值是(0.912±0.080)×10-mm2/s。 四、结论 1、ACR BI-RAD分类中肿块形态不规则、边缘不规则或呈毛刺、不均质强化或边缘强化,早期快速强化、Ⅱ型及Ⅲ型曲线均提示恶性肿瘤。BI-RADS分类对乳腺良恶性病变有鉴别诊断价值,其诊断乳腺癌的灵敏性、特异性及准确性分别为97.56%、77.27%、90.47%。 2、恶性肿瘤的ADC值低于良性肿瘤和正常腺体,DWI能鉴别乳腺良恶性肿瘤。BI-RADS分类与DWI结合后,诊断的敏感性、特异性和准确性分别为97.56%、86.36%、93.65%,特异性和准确性均提高。 3、ADC值与浸润性导管癌的组织学分级密切相关,较低的ADC值具有较高的组织学分级。ADC值可作为预后参数,DWI能评价浸润性导管癌的侵袭性。
[Abstract]:I. Purpose: (1) Analysis of which terms in the MRI BI-RADS classification are associated with breast cancer and further assess the diagnostic value of the BI-RADS classification in benign and malignant breast lesions Value. (2) The value of DWI in the diagnosis of benign and malignant lesions of the breast was discussed by analyzing the SI value, the ADC value and the BI-RADS classification and the ADC value of the breast benign and malignant lesions on the DWI, and whether the BI-RADS classification and the DWI combination could improve the diagnosis of 3.0T magnetic resonance. Fracture performance. (3) By measuring the ADC value of the invasive ductal carcinoma and comparing with the pathological findings, the histological structure of the invasive ductal carcinoma was discussed by DWI. The value of the classification. II. Material and Party Method:1. The first part of the study object (1) and the first part and the second part Part two: The same group of cases was used. During the period from May 2012 to December 2013, the provincial level of Shandong University was collected. In the period from May 2012 to December 2013,89 cases of the patients with breast lesions were found to be further clearly diagnosed by the MRI examination of the breast lesions,26 of which were due to radiotherapy and chemotherapy (11 cases), or did not The pathological confirmation (15) was ruled out In addition, the last 63 cases were included in the study. The patient's age ranged from 27 to 71 years, with an average age of 4 3.78 to 10.20 years of age. All lesions were examined by MRI, both of which were (2) The third part: collected from May 2012 to December 2013, the third part: collected 89 cases of patients with breast lesions by MRI in the period from May 2012 to December 2013 for the purpose of further definite diagnosis. Of the 53 cases (11 cases), there was no pathological confirmation (15 cases), benign lesion (22), and other type of malignant tumor (5 cases). Excluded, the last 36 cases were included in the study. The patient's age ranged from 27 to 71 years, with an average of years The age was 44.50 to 10.73 years. After all the lesions were examined by MRI, All of them were biopsy. Or the pathology of the operation confirmed.2. All the examinations of the scanning method were Siemens 3. OT magnetic resonance imager (Magnetom verio, SIEMENS, Ger). Germany),8-channel surface for breast Coils. Patient's prone position, bilateral breast at the same time Scan. The examination time is 7-14 days before menstruation. The scan sequence includes T1WI-TSE, T2WI-fat, DWI and 3DFL ASH DYN T1WI plus fat suppression sequence. DWI selection b鍊,
本文编号:2500255
[Abstract]:I. Purpose: (1) Analysis of which terms in the MRI BI-RADS classification are associated with breast cancer and further assess the diagnostic value of the BI-RADS classification in benign and malignant breast lesions Value. (2) The value of DWI in the diagnosis of benign and malignant lesions of the breast was discussed by analyzing the SI value, the ADC value and the BI-RADS classification and the ADC value of the breast benign and malignant lesions on the DWI, and whether the BI-RADS classification and the DWI combination could improve the diagnosis of 3.0T magnetic resonance. Fracture performance. (3) By measuring the ADC value of the invasive ductal carcinoma and comparing with the pathological findings, the histological structure of the invasive ductal carcinoma was discussed by DWI. The value of the classification. II. Material and Party Method:1. The first part of the study object (1) and the first part and the second part Part two: The same group of cases was used. During the period from May 2012 to December 2013, the provincial level of Shandong University was collected. In the period from May 2012 to December 2013,89 cases of the patients with breast lesions were found to be further clearly diagnosed by the MRI examination of the breast lesions,26 of which were due to radiotherapy and chemotherapy (11 cases), or did not The pathological confirmation (15) was ruled out In addition, the last 63 cases were included in the study. The patient's age ranged from 27 to 71 years, with an average age of 4 3.78 to 10.20 years of age. All lesions were examined by MRI, both of which were (2) The third part: collected from May 2012 to December 2013, the third part: collected 89 cases of patients with breast lesions by MRI in the period from May 2012 to December 2013 for the purpose of further definite diagnosis. Of the 53 cases (11 cases), there was no pathological confirmation (15 cases), benign lesion (22), and other type of malignant tumor (5 cases). Excluded, the last 36 cases were included in the study. The patient's age ranged from 27 to 71 years, with an average of years The age was 44.50 to 10.73 years. After all the lesions were examined by MRI, All of them were biopsy. Or the pathology of the operation confirmed.2. All the examinations of the scanning method were Siemens 3. OT magnetic resonance imager (Magnetom verio, SIEMENS, Ger). Germany),8-channel surface for breast Coils. Patient's prone position, bilateral breast at the same time Scan. The examination time is 7-14 days before menstruation. The scan sequence includes T1WI-TSE, T2WI-fat, DWI and 3DFL ASH DYN T1WI plus fat suppression sequence. DWI selection b鍊,
本文编号:2500255
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