Objective By comparing the CT features of infective aortic aneurysm(INAA)and non-infective aortic aneu-rysm(NIAA)to build a nomogram diagnostic model so as to determine the CT imaging differences between INAA and NIAA.Methods 87 patients with INAA and 87 patients with NIAA were selected by propensity-scoring match method.The clinical data were reported and the difference of CT characteristics between two groups was compared.The diagnostic model was built in nomogram.Results INAA had smaller diameter compared to the NIAA(56.0mm).Saccular(52.9%versus 16.1%),multilobu-lar(40.2%versus 3.4%)aneurysm were more common in INAA.Periaortic gas(37.9%versus 0%),fluid(59.8%versus 5.7%)and adjacent infection(54.0%versus 0%)were the characteristic imaging features of INAA.A nomogram model based on fea-tures as saccular,multilobular,periaortic gas,fluid and mural thrombus was constructed,which can diagnose INAA with high accuracy.Conclusions The nomogram model has a good sensitivity and specificity.Rapid progression can be indicated by the absence of calcification.The indication of the diagnosis of INAA by multiple aneurysms needs further discussion.
To evaluate carotid elasticity by using two-dimensional strain imaging (2DSI) in type 2 diabetes mellitus (T2DM) patients with nonalcoholic fatty liver disease (NAFLD). 98 patients with T2DM diagnosed in our hospital were selected. All the patients were without carotid plaque, which were proved by carotid ultrasonography. According to the fatty liver classification standard, patients were divided into three groups. There were 35 cases without NAFLD in group A, 33 cases with mild NAFLD in group B and 30 cases with moderate to severe NAFLD in group C. By using two-dimensional and M-mode ultrasound to measure the left carotid intima-media thickness (IMT), common carotid arterial systolic diameter (Ds) and diastolic diameter (Dd). The systolic peak velocity was measured by spectral Doppler ultrasound. The systolic global peak circumferential strain (CS), early and late systolic global circumferential strain rate (CSr) were measured by 2DSI. The stiffness parameters β1 and β2 were calculated by M-mode ultrasound and 2DSI separately. Among three groups, the Ds, Dd and systolic peak velocity showed no significant difference (all P > .05). In group C, IMT and β1 were obviously increased than those of groups A and B (all P < .05). Compared groups A and B, there were no significant difference in IMT and β1 (all P > .05). β2 was higher in groups B and C than those in group A, CS, CSr were lower in groups B and C than those in group A (both P > .05). The carotid elasticity of T2DM patients with NAFLD can be evaluated by 2DSI.
Background Non-invasive imaging technologies for assessing axillary lymph node (ALN) metastasis of breast cancer are needed in clinical practice. Purpose To explore the clinical value of intravoxel incoherent motion (IVIM) and diffusional kurtosis imaging (DKI) for predicting ALN metastasis of breast cancer. Material and Methods A total of 194 patients with pathologically confirmed breast cancer who underwent IVIM and DKI examination were reviewed retrospectively. The IVIM derived parameters of D, D*, and f and DKI-derived parameters of MD and MK were measured. The independent samples t-test was used to compare the parameters between the ALN metastasis and non-ALN metastasis groups. Receiver operating characteristic (ROC) curve analysis was also performed. Results The D and MD in the ALN metastasis group were significantly lower than those in the non-ALN metastasis group (P < 0.001, P < 0.001). The D*, f, and MK were higher in the ALN metastasis group than in the non-ALN metastasis group (P = 0.015, P = 0.014, and P = 0.001, respectively). The area under the ROC curve (AUC) of D (0.768) was highest. In addition, the diagnostic efficiency of both IVIM and DKI were higher than that of the conventional MRI (P = 0.002, P = 0.048). The diagnostic efficiency of IVIM + DKI were higher than that of the IVIM or DKI alone (P = 0.021, P = 0.004). Conclusion IVIM and DKI can be used for predicting breast cancer ALN metastasis with D as the most meaningful parameter.
This study investigated the application effect of contrast-enhanced ultrasound (CEUS) and enhanced CT in diagnosis of liver cancer and response evaluation of radiofrequency ablation (RFA). A total of 60 patients with liver cancer were selected in Dongying People's Hospital from April 2016 to May 2017. All patients were subjected to CEUS and enhanced CT. With pathological examination as the gold standard, diagnostic consistency of the two methods was compared. After RFA, patients were subjected to CEUS and enhanced CT to assess the efficacy, and the consistency was compared. There was no significant difference in diagnostic accuracy between CEUS and CT (p>0.05). Area under the ROC curve of CEUS was 0.896, with a sensitivity of 91.2% and a specificity of 88.7%. The area under the ROC curve for enhanced CT diagnosis was 0.907, with a sensitivity of 91.8% and a specificity of 89.7%. No significant difference in the maximal cross sectional area of lesions was found between CEUS and enhanced CT, and there was no significant difference in evaluation of therapeutic efficiency between the methods (p>0.05) before and 1 and 3 months after treatment. Bland-Altman test showed that there was a strong consistency between CEUS and enhanced CT in the measured maximum cross-sectional area of lesions at 1 and 3 months after treatment. Linear regression analysis showed that maximum section cross-sectional area measured by CEUS was significantly correlated with that detected by enhanced CT (r(2)=0.617). The results suggested that diagnostic efficiency of CEUS was similar to that of enhanced CT, and both showed high sensitivity and specificity. Two methods showed high consistency in evaluating the curative effect of RFA. CEUS can achieve real-time observation of focal blood flow perfusion, and was more economically affordable and convenient.
目的 探讨乳腺结节性筋膜炎(breastnodularfascitis,BNF)的超声检查、X线摄影、MRI检查的影像表现.方法 选取我院经手术病理证实的BNF患者17 例,分析影像学表现及临床病理特点.结果 17 例患者术前均行超声检查有记录的17 个病灶中,1 个位于皮肤层,8 个位于皮下脂肪层,8 个位于腺体层;形态不规则15 例,椭圆形2 例;边缘成角或毛刺状16 例,光整1 例;5 个非腺体层的病灶周围见高回声晕.6 个有乳腺X线摄影检查记录的病灶均未见钙化;13 个有MR增强检查记录的病灶中,11 个时间-信号曲线为非流出型.镜下肿块见大量梭形细胞增生、边界多不清.结论 对于中青年乳腺皮下脂肪层快速生长、常规超声检查周围见高回声晕、乳腺X线摄影未见钙化、MRI增强曲线呈非流出型的病灶应考虑BNF的可能.
