BACKGROUND Unstable carotid atherosclerotic plaques are prone to cause ischemic stroke.Contrast-enhanced ultrasound(CEUS) is the primary method of assessing plaque stability, but CEUS cannot be a method for screening ...BACKGROUND Unstable carotid atherosclerotic plaques are prone to cause ischemic stroke.Contrast-enhanced ultrasound(CEUS) is the primary method of assessing plaque stability, but CEUS cannot be a method for screening for unstable plaque. The emergence of superb micro-vascular imaging(SMI) offers the possibility of clinically screening for unstable plaque AIM To investigate the value of SMI in predicting ischemic stroke in patients with carotid atherosclerotic plaques.METHODS Patients with carotid atherosclerotic plaques(luminal stenosis of 50%-70%) were enrolled into the present study. All patients received conservative medication.The patient's clinical baseline data, serological data, CEUS and SMI data were analyzed. All patients underwent a 3-year follow-up. The follow-up endpoint was the occurrence of ischemic stroke and patients were divided into stroke group and non-stroke group according to whether the prognosis occurred or not.Subsequently, the difference in clinical data was compared, the correlation of SMI and CEUS was analyzed, and multiple Cox regression and receiver operating characteristic curve were applied to investigate the value of SMI and CEUS in predicting cerebral arterial thrombosis in three years.RESULTS In this study, 43 patients were enrolled in the stroke group and 82 patients were enrolled in the non-stroke group. Cox regression revealed that SMI level(P =0.013) and enhancement intensity(P = 0.032) were the independent factors influencing ischemic stroke. There was a positive correlation between SMI level and enhancement intensity(r = 0.737, P = 0.000). The area under curve of SMI level predicting ischemic stroke was 0.878. The best diagnostic point was ≥ level Ⅱ, and its sensitivity and specificity was 86.05% and 79.27%. The area under curve of enhancement intensity predicting ischemic stroke was 0.890. The best diagnostic point was 9.92 db, and its sensitivity and specificity was 88.37% and89.02%. As the SMI level gradually increased, the incidence of ischemic stroke increased gradually(X^2 = 108.931, P = 0.000).CONCLUSION SMI can be used as a non-invasive method of screening for unstable plaques and may help prevent ischemic stroke.展开更多
AIM: To identify the hepatic vascular architecture of patients with hepatitis C virus (HCV) using superb microvascular imaging (SMI) and investigate the use of SMI in the evaluation of liver fibrosis.METHODS: SMI was ...AIM: To identify the hepatic vascular architecture of patients with hepatitis C virus (HCV) using superb microvascular imaging (SMI) and investigate the use of SMI in the evaluation of liver fibrosis.METHODS: SMI was performed in 100 HCV patients. SMI images were classified into five types according to the vascular pattern, and these patterns were compared with the fibrosis stage. Moreover, the images were analyzed to examine vascularity by integrating the number of SMI signals in the region of interest ROI [number of vascular trees (VT)]. The number of VT, fibrosis stage, serum parameters of liver function, and CD34 expression were investigated.RESULTS: There was a significant difference between SMI distribution pattern and fibrosis stage (P < 0.001). The mean VT values in each of the fibrosis stages were as follows: 26.69 ± 7.08 in F0, 27.72 ± 9.32 in F1, 36.74 ± 9.23 in F2, 37.36 ± 5.32 in F3, and 58.14 ± 14.08 in F4. The VT showed excellent diagnostic ability for F4 [area under the receiver operator characteristic (AUROC): 0.911]. The VT was significantly correlated with the CD34 labeling index (r = 0.617, P < 0.0001).CONCLUSION: SMI permitted the detailed delineation of the vascular architecture in chronic liver disease. SMI appears to be a reliable tool for noninvasively detecting significant fibrosis or cirrhosis in HCV patients.展开更多
BACKGROUND Madelung’s disease,also known as multiple symmetrical lipomatosis,is a rare,underrecognized disorder of fat metabolism that results in unusual accumulation of subcutaneous fat deposits around the neck,shou...BACKGROUND Madelung’s disease,also known as multiple symmetrical lipomatosis,is a rare,underrecognized disorder of fat metabolism that results in unusual accumulation of subcutaneous fat deposits around the neck,shoulders,upper arms,trunk,hips,and upper thighs.Our case demonstrates the importance of differential diagnosis and the value of a superb microvascular imaging technique for suspecting and confirming Madelung’s disease.Timely diagnosis and alcohol abstinence could prevent the progression of growing fatty masses and prevent surgery.CASE SUMMARY A 62-year-old male was admitted to the Rheumatology center complaining of symmetric subcutaneous tumors in the area of the parotid and submandibular salivary glands,small soft masses in the occiput and upper third of the forearm,rashes on calves.A high titer of rheumatoid factor and low concentrations of serum complements were detected.The high-end ultrasound and magnetic resonance imaging examinations of all affected areas of the soft tissues showed predominantly adipose tissue(lipomas)without suspicion of liposarcoma.The biopsy from the small salivary gland revealed no pathology.After evaluating the patient’s clinical presentation(symmetrical lipomatosis,cirrhosis,gynecomastia,anemia,hyperuricemia),Madelung’s disease,type I,along with the psoriatic rash and psoriatic arthritis and secondary liver cirrhosis were established.CONCLUSION Madelung’s disease consists of many co-occurring disorders imitating and overlapping with other conditions.Ultrasonography is the first choice for suspecting and confirming symmetrical lipomatosis.展开更多
紫外成像技术对变电设备的电晕、闪络和电弧有较好的检测效果,通过检测放电部位辐射紫外线,能间接评估运行设备的绝缘状况并及时发现绝缘设备的缺陷。用Super B便携式紫外成像仪在不同的气象环境下对多座500 k V变电站进行了现场检测,...紫外成像技术对变电设备的电晕、闪络和电弧有较好的检测效果,通过检测放电部位辐射紫外线,能间接评估运行设备的绝缘状况并及时发现绝缘设备的缺陷。用Super B便携式紫外成像仪在不同的气象环境下对多座500 k V变电站进行了现场检测,发现了部分设备的电晕放电现象,验证了紫外成像检测技术的实用性。展开更多
BACKGROUND Septic arthritis of the manubriosternal joint is a diagnostic challenge due to its rarity and anatomical characteristic.Conventional ultrasound,plain radiographs,and computed tomography are not able to conf...BACKGROUND Septic arthritis of the manubriosternal joint is a diagnostic challenge due to its rarity and anatomical characteristic.Conventional ultrasound,plain radiographs,and computed tomography are not able to confirm or even suspect arthritis early.Superb microvascular imaging is a new advanced Doppler technique in evaluating low-flow microvascular patterns.The higher sensitivity for increased perisynovial vascularity helps to suspect septic arthritis and forms a methodical approach to using magnetic resonance imaging(MRI).CASE SUMMARY A 34-year-old immunocompetent woman presented with a fever and a dull ache in the chest radiating to the right arm.Traumatic injury and the most common respiratory and cardiac disorders were ruled out.Blood cultures came back positive for Staphylococcus aureus,and sepsis was confirmed.A small lump was noted on the chest during the first week of hospitalization.Superb microvascular imaging was performed and septic arthritis of the manubriosternal joint was detected.MRI confirmed the diagnosis and showed septic arthritis of the manubriosternal joint with several localized abscesses behind the sternum.The patient was treated for three weeks with intravenous antibiotics and the outcome was favorable:Inflammatory markers became normal,and the lump disappeared.Three months later,the patient was examined for a new episode of mild pain in the sternum and was diagnosed with persistent perichondritis by ultrasound in comparison with MRI.CONCLUSION Superb microvascular imaging is a useful tool for the early diagnosis of septic arthritis of the manubriosternal joint and following-up.展开更多
On December 14, 2001, the 25th Session of the UNESCO World Heritage Committee held in Helsinkidecided that Norbu Lingka be an extension of the Potala Palace,a "world heritage."
目的探讨超微血流成像(SMI)联合高级动态血流成像(ADF)鉴别最大径≤10 mm BI-RADS 4类乳腺结节良恶性的临床价值。方法选取我院经手术病理证实的78例女性乳腺结节患者(共81个病灶),其中良性结节47个,恶性结节34个,均行SMI和ADF获取病灶...目的探讨超微血流成像(SMI)联合高级动态血流成像(ADF)鉴别最大径≤10 mm BI-RADS 4类乳腺结节良恶性的临床价值。方法选取我院经手术病理证实的78例女性乳腺结节患者(共81个病灶),其中良性结节47个,恶性结节34个,均行SMI和ADF获取病灶血流分级和血管形态特征,比较良恶性结节上述检查结果的差异。分析SMI、ADF及两者联合应用鉴别BI-RADS 4类乳腺结节良恶性的诊断效能,采用Kappa检验分析其与病理结果的一致性。结果SMI检查显示乳腺良恶性结节血流分级和血管形态特征比较差异均有统计学意义(均P<0.001);ADF检查显示乳腺良恶性结节血流分级和血管形态特征比较差异均有统计学意义(均P<0.001)。SMI准确诊断BI-RADS 4类乳腺良性结节38个,恶性结节28个,诊断灵敏度、特异度、准确率分别为82.35%、80.85%、81.48%;ADF准确诊断BIRADS 4类乳腺良性结节32个,恶性结节25个,诊断灵敏度、特异度、准确率分别为73.53%、68.09%、70.37%;两者联合应用准确诊断BI-RADS 4类乳腺良性结节35个,恶性结节33个,诊断灵敏度、特异度、准确率分别为97.06%、74.47%、83.95%。SMI、ADF及两者联合应用与病理结果的一致性均中等(Kappa=0.632、0.406、0.685,均P<0.05)。结论SMI联合ADF可以提高最大径≤10 mm BI-RADS 4类乳腺结节良恶性的鉴别诊断效能,具有一定的临床价值。展开更多
基金Supported by Shanghai Jiading District Health and Family Planning Commission Health Planning Commission Scientific Research Project,No.KYXM,2015-KY-02
文摘BACKGROUND Unstable carotid atherosclerotic plaques are prone to cause ischemic stroke.Contrast-enhanced ultrasound(CEUS) is the primary method of assessing plaque stability, but CEUS cannot be a method for screening for unstable plaque. The emergence of superb micro-vascular imaging(SMI) offers the possibility of clinically screening for unstable plaque AIM To investigate the value of SMI in predicting ischemic stroke in patients with carotid atherosclerotic plaques.METHODS Patients with carotid atherosclerotic plaques(luminal stenosis of 50%-70%) were enrolled into the present study. All patients received conservative medication.The patient's clinical baseline data, serological data, CEUS and SMI data were analyzed. All patients underwent a 3-year follow-up. The follow-up endpoint was the occurrence of ischemic stroke and patients were divided into stroke group and non-stroke group according to whether the prognosis occurred or not.Subsequently, the difference in clinical data was compared, the correlation of SMI and CEUS was analyzed, and multiple Cox regression and receiver operating characteristic curve were applied to investigate the value of SMI and CEUS in predicting cerebral arterial thrombosis in three years.RESULTS In this study, 43 patients were enrolled in the stroke group and 82 patients were enrolled in the non-stroke group. Cox regression revealed that SMI level(P =0.013) and enhancement intensity(P = 0.032) were the independent factors influencing ischemic stroke. There was a positive correlation between SMI level and enhancement intensity(r = 0.737, P = 0.000). The area under curve of SMI level predicting ischemic stroke was 0.878. The best diagnostic point was ≥ level Ⅱ, and its sensitivity and specificity was 86.05% and 79.27%. The area under curve of enhancement intensity predicting ischemic stroke was 0.890. The best diagnostic point was 9.92 db, and its sensitivity and specificity was 88.37% and89.02%. As the SMI level gradually increased, the incidence of ischemic stroke increased gradually(X^2 = 108.931, P = 0.000).CONCLUSION SMI can be used as a non-invasive method of screening for unstable plaques and may help prevent ischemic stroke.
文摘AIM: To identify the hepatic vascular architecture of patients with hepatitis C virus (HCV) using superb microvascular imaging (SMI) and investigate the use of SMI in the evaluation of liver fibrosis.METHODS: SMI was performed in 100 HCV patients. SMI images were classified into five types according to the vascular pattern, and these patterns were compared with the fibrosis stage. Moreover, the images were analyzed to examine vascularity by integrating the number of SMI signals in the region of interest ROI [number of vascular trees (VT)]. The number of VT, fibrosis stage, serum parameters of liver function, and CD34 expression were investigated.RESULTS: There was a significant difference between SMI distribution pattern and fibrosis stage (P < 0.001). The mean VT values in each of the fibrosis stages were as follows: 26.69 ± 7.08 in F0, 27.72 ± 9.32 in F1, 36.74 ± 9.23 in F2, 37.36 ± 5.32 in F3, and 58.14 ± 14.08 in F4. The VT showed excellent diagnostic ability for F4 [area under the receiver operator characteristic (AUROC): 0.911]. The VT was significantly correlated with the CD34 labeling index (r = 0.617, P < 0.0001).CONCLUSION: SMI permitted the detailed delineation of the vascular architecture in chronic liver disease. SMI appears to be a reliable tool for noninvasively detecting significant fibrosis or cirrhosis in HCV patients.
文摘BACKGROUND Madelung’s disease,also known as multiple symmetrical lipomatosis,is a rare,underrecognized disorder of fat metabolism that results in unusual accumulation of subcutaneous fat deposits around the neck,shoulders,upper arms,trunk,hips,and upper thighs.Our case demonstrates the importance of differential diagnosis and the value of a superb microvascular imaging technique for suspecting and confirming Madelung’s disease.Timely diagnosis and alcohol abstinence could prevent the progression of growing fatty masses and prevent surgery.CASE SUMMARY A 62-year-old male was admitted to the Rheumatology center complaining of symmetric subcutaneous tumors in the area of the parotid and submandibular salivary glands,small soft masses in the occiput and upper third of the forearm,rashes on calves.A high titer of rheumatoid factor and low concentrations of serum complements were detected.The high-end ultrasound and magnetic resonance imaging examinations of all affected areas of the soft tissues showed predominantly adipose tissue(lipomas)without suspicion of liposarcoma.The biopsy from the small salivary gland revealed no pathology.After evaluating the patient’s clinical presentation(symmetrical lipomatosis,cirrhosis,gynecomastia,anemia,hyperuricemia),Madelung’s disease,type I,along with the psoriatic rash and psoriatic arthritis and secondary liver cirrhosis were established.CONCLUSION Madelung’s disease consists of many co-occurring disorders imitating and overlapping with other conditions.Ultrasonography is the first choice for suspecting and confirming symmetrical lipomatosis.
文摘BACKGROUND Septic arthritis of the manubriosternal joint is a diagnostic challenge due to its rarity and anatomical characteristic.Conventional ultrasound,plain radiographs,and computed tomography are not able to confirm or even suspect arthritis early.Superb microvascular imaging is a new advanced Doppler technique in evaluating low-flow microvascular patterns.The higher sensitivity for increased perisynovial vascularity helps to suspect septic arthritis and forms a methodical approach to using magnetic resonance imaging(MRI).CASE SUMMARY A 34-year-old immunocompetent woman presented with a fever and a dull ache in the chest radiating to the right arm.Traumatic injury and the most common respiratory and cardiac disorders were ruled out.Blood cultures came back positive for Staphylococcus aureus,and sepsis was confirmed.A small lump was noted on the chest during the first week of hospitalization.Superb microvascular imaging was performed and septic arthritis of the manubriosternal joint was detected.MRI confirmed the diagnosis and showed septic arthritis of the manubriosternal joint with several localized abscesses behind the sternum.The patient was treated for three weeks with intravenous antibiotics and the outcome was favorable:Inflammatory markers became normal,and the lump disappeared.Three months later,the patient was examined for a new episode of mild pain in the sternum and was diagnosed with persistent perichondritis by ultrasound in comparison with MRI.CONCLUSION Superb microvascular imaging is a useful tool for the early diagnosis of septic arthritis of the manubriosternal joint and following-up.
文摘On December 14, 2001, the 25th Session of the UNESCO World Heritage Committee held in Helsinkidecided that Norbu Lingka be an extension of the Potala Palace,a "world heritage."
