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
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
目的:比较超微血管成像(SMI)技术与多参数磁共振(mpMRI)检查对前列腺癌的诊断准确性。方法:选取2022年1月—2023年11月上海市浦东新区人民医院收治的61例可疑前列腺癌患者,均行SMI和mpMRI检查以及经直肠超声(TRUS)引导的系统穿刺+可疑...目的:比较超微血管成像(SMI)技术与多参数磁共振(mpMRI)检查对前列腺癌的诊断准确性。方法:选取2022年1月—2023年11月上海市浦东新区人民医院收治的61例可疑前列腺癌患者,均行SMI和mpMRI检查以及经直肠超声(TRUS)引导的系统穿刺+可疑病灶的靶向穿刺活检术,以病理结果为金标准,绘制受试者工作特征(ROC)曲线并计算曲线下面积(AUC),评估SMI、mpMRI及SMI联合mpMRI诊断前列腺癌的准确率。结果:61例疑似前列腺癌患者中,病理诊断为前列腺腺癌22例,良性39例。SMI检出23例有异常征象,其中17例病理诊断为恶性,SMI诊断前列腺癌的灵敏度为77.27%、特异度84.62%、阳性预测值73.91%、阴性预测值86.84%、准确率81.97%。mpMRI检出24例有异常征象,其中20例病理诊断为恶性,mpMRI诊断前列腺癌的灵敏度为90.91%、特异度为89.74%、阳性预测值83.33%、阴性预测值94.59%、准确率90.16%。SMI联合mpMRI诊断前列腺癌的灵敏度为95.45%、特异度为79.49%、阳性预测值72.41%、阴性预测值96.88%、准确率85.25%。ROC曲线分析结果显示,SMI、mpMRI及SMI联合mpMRI诊断前列腺癌的AUC分别为0.809(95%CI:0.688~0.931)、0.903(95%CI:0.814~0.993)及0.875(95%CI:0.782~0.968),3种诊断方法比较差异无统计学意义(SMI vs mpMRI,Z=-1.591、P=0.112,SMI vs SMI联合mpMRI,Z=-1.427、P=0.153,mpMRI vs SMI联合mpMRI,Z=0.852、P=0.394)。结论:mpMRI诊断前列腺癌的准确率高于SMI,两者联合应用并精准靶向穿刺可提高前列腺癌的检出率。展开更多
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.
文摘目的:比较超微血管成像(SMI)技术与多参数磁共振(mpMRI)检查对前列腺癌的诊断准确性。方法:选取2022年1月—2023年11月上海市浦东新区人民医院收治的61例可疑前列腺癌患者,均行SMI和mpMRI检查以及经直肠超声(TRUS)引导的系统穿刺+可疑病灶的靶向穿刺活检术,以病理结果为金标准,绘制受试者工作特征(ROC)曲线并计算曲线下面积(AUC),评估SMI、mpMRI及SMI联合mpMRI诊断前列腺癌的准确率。结果:61例疑似前列腺癌患者中,病理诊断为前列腺腺癌22例,良性39例。SMI检出23例有异常征象,其中17例病理诊断为恶性,SMI诊断前列腺癌的灵敏度为77.27%、特异度84.62%、阳性预测值73.91%、阴性预测值86.84%、准确率81.97%。mpMRI检出24例有异常征象,其中20例病理诊断为恶性,mpMRI诊断前列腺癌的灵敏度为90.91%、特异度为89.74%、阳性预测值83.33%、阴性预测值94.59%、准确率90.16%。SMI联合mpMRI诊断前列腺癌的灵敏度为95.45%、特异度为79.49%、阳性预测值72.41%、阴性预测值96.88%、准确率85.25%。ROC曲线分析结果显示,SMI、mpMRI及SMI联合mpMRI诊断前列腺癌的AUC分别为0.809(95%CI:0.688~0.931)、0.903(95%CI:0.814~0.993)及0.875(95%CI:0.782~0.968),3种诊断方法比较差异无统计学意义(SMI vs mpMRI,Z=-1.591、P=0.112,SMI vs SMI联合mpMRI,Z=-1.427、P=0.153,mpMRI vs SMI联合mpMRI,Z=0.852、P=0.394)。结论:mpMRI诊断前列腺癌的准确率高于SMI,两者联合应用并精准靶向穿刺可提高前列腺癌的检出率。
