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Objective:To evaluate the relationships among contrast-enhanced ultrasound (CEUS) features, molecular type, and biomarker expression of breast cancer.Methods:A retrospectively analysis of breast cancer patients confirmed by pathology were performed using Breast Imaging Report And Data System (BI-RADS) ultrasound category lesions in the Second Affiliated Hospital Zhejiang University School of Medicine from May 2020 to April 2021. All patients underwent conventional ultrasound and CEUS before biopsy and/or surgery. The relationships among BI-RADS category, quantitative and qualitative CEUS features and biomarker expression of breast cancer were evaluated.Results:All 149 patients with 149 breast lesions were included. The numbers of BI-RADS category 4A, 4B, 4C, and 5 were 8, 60, 49, and 32, respectively. Among them, the numbers of Luminal A like, Luminal B like (human epidermal growth factor receptor-2 (HER-2) positive), Luminal B like (HER-2 negative), HER-2 overexpression and triple negative type were 81, 29, 17, 15, and 7. No significant correlations were found among BI-RADS category, molecular types, and biomarker estrogen receptor (ER), progesterone receptor (PR), HER-2, and antigen Ki-67 (Ki-67) expression (all P>0.05). There were no correlations between quantitative or qualitative CEUS features and molecular types of breast cancer (all P>0.05). There were no correlations between qualitative CEUS variables and ER, PR, HER-2, and Ki-67 expression (all P>0.05). Ascending slope (AS) were negatively correlated with ER and PR expression( r=-0.40, P=0.01; r=-0.35, P=0.03). Descending slope (DS) were positively correlated with ER and PR expression( r=0.42, P=0.01; r=0.36, P=0.03). Arrive time (AT) were positively correlated with HER-2 expression( r=0.37, P=0.02). Conclusions:AS and DS are correlated with ER and PR expression.Arrive time (AT) is correlated with HER-2 expression. The quantitative variables of CEUS are helpful for evaluation of biomarker expression in breast cancer.
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Objective To evaluate the correlation between quantitative parameters of contrastenhanced ultrasound(CEUS) and microvessel density (MVD) of rabbit atherosclerotic plaques.Methods Twenty-six male New Zealand rabbits were damaged abdominal aortic by balloon expanded,fed with high fat 12 weeks later.Thirty two plaques were detected using conventional ultrasound examination.The maximum area,luminal area stenosis rate and the maximum thickness of each plaque were recorded.CEUS was performed on 32 plaques and enhancement images were offline analyzed quantitatively by ACQ software and the parameters such as arrival time(AT),time to peak(TTP),basic intensity(BI),and peak intensity(PI) were acquired.Enhanced intensity (EI) was calculated according to the formula:EI =PI- BI.Then the experimentalrabbitswerekilledforpathologicalexaminationandCD34monoclonalantibody immunohistochemical detection.MVD was counted under the microscope.The correlation between the parameters of CEUS and MVD was analyzed.Based on pathological findings,the plaques were divided into vulnerable plaques and stable plaques.ResultsEI and MVD of vulnerable plaques group were significantly higher than that of stable plaques group [EI:(26.36 ± 1.44) dB vs (23.90 ± 2.92)dB,t =- 3.243,P =0.001 ；MVD:(5.23 ± 1.16)/mm2 vs (2.47 ± 1.12)/mm2,Z =- 4.378,P ＜0.001].The maximum area,luminal area stenosis rate,the maximum thickness and PI,AT,TTP had no significant difference between two groups( P ＞0.05).The value of EI showed significant positive correlation with MVD ( r =0.676,P ＜0.001).ConclusionsEI can accurately evaluate the angiogenesis of rabbit atherosclerotic plaques,which can be regarded as a useful index to distinguish between vulnerable and stable plaques.
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Objective To evaluate the safety, feasibility and clinical value of real-time navigation system with CT/MR and sonographic images for percutaneous ablation of hepatic malignancies poorly defined on conventional ultrasonography. Methods Fifteen patients with 22 hepatic malignant lesions underwent percutaneous ablation guided by virtual navigation system with ultrasonography. Treatment response was assessed by the contrast CT/MR followed up one month after procedures. Results Complete tumor necrosis was achieved in 20 lesions, but 2 lesions showed residual tumor in the ablation zone. No treatment associated complications were found. Conclusions The application of virtual navigation system is of clinical value in localization of lesions, guidance of biopsy and assessment of the interventional therapy in patient with hepatic malignancies, particularly for those with poorly identified lesions by conventional ultrasonography.
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Objective To build the schema of combination between commercially available ultrasound contrast agent SonoVue and self-made liposomes,and determine its efficiency. Methods Microbubbles was labeled by carbocyanines dye DiI. The effect of DSPE-PEG-FITC labelling was determined by flow cytometer to evaluate the insertion efficiency of the amphipathic molecule DSPE-PEG(2000)Amine into lipid monomers shell. Aminated fluorescent liposomes were prepared by rotary evaporation and their size were determined by laser particle size analyzer. Liposomes and microbubbles were combined by two-step glutaraldehyde crosslinking. The impact of liposome concentration and DSPE-PEG (2000)Amine concentration on the construction efficiency of the complex of SonoVue conjugated to liposomes was determined by flow cytometer and multifunctional ELIASA respectively. Results The configuration of SonoVue microbubbles labeled by DiI and DSPE-PEG-FITC showed fine. The combination between liposomes and microbubbles was realized by glutaraldehyde crosslinking. The flow cytometer showed that 200 μl liposomes solution per 200 μl microbubbles suspension was the optimal proportion, with the peak positive rate as (87.80 ± 5.91)%. Multifunctional ELIASA showed that 150 μl DSPE-PEG (2000)Amine (100 μm) solution per 200 μl microbubbles suspension was the optimal proportion, with the peak carry efficiency as (83.41±2.21)%. Conclusions The amination of commercially available SonoVue is realized by the insertion of DSPE-PEG (2000) Amine molecule. Glutaraldehyde crosslinking the liposomes and microbubbles is feasible. Moreover, we can choose other active groups to modify the microbubbles and liposomes, construct more convenient methods with higher efficiency.