Objective To report use of the Vibrant Soundbridge (VSB) in patients with congenital deformation of the middle and outer ears and investigate its utility in this patient population.Method Four patients with congenital...Objective To report use of the Vibrant Soundbridge (VSB) in patients with congenital deformation of the middle and outer ears and investigate its utility in this patient population.Method Four patients with congenital deformation of middle and outer ears underwent VSB implantation. All were male (aged 3-18 years,average 13.5 years) and operated on the left side.Malformation was bilateral in 3 patients and unilateral in 1 patient. Surgical techniques were modified to accommodate each patient’s unique conditions and needs.The implant site was approached via the facial recess in 3 patients and through a retro-facial nerve route in 1 patient. The VSB implant was connected to either the stapes (2 cases) or the round window (2 cases).Pure tone and speech audiometry results and daily communication capabilities before and after VSB activation were compared.Results The operations were successful in all patients, with no complications. The patient communication level improved significantly after VSB activation. Average air conduction pure tone threshold or conditioned reflex audiometry threshold improved by 35 dB in the 0.25-4 kHz range,from 69 dB HL before VSB activation to 34 dB HL after.The sentence recognition rate in quiet at 65 dB SPL went up to 86% from 0% without VSB for patients with bilateral deformation and remained at 100% for the patient with unilateral deformity. However, for the latter patient, the rate improved to 20% from 0% without VSB in noise (-8 dB SNR).Conclusion VSB is an excellent solution for improving hearing in patients with congenital deformation of middle and outer ears.Operation can be completed and good results can be achieved even in patients with unique conditions and needs.展开更多
目的:探讨3.0T磁共振动态增强检查VIBRANT(Volume Imaging for Breast Assessment,乳腺容积成像序列)技术在乳腺疾病诊断中的价值。方法:回顾性分析经手术病理证实的32例乳腺疾病病人的MRI资料,分析病变信号、形态、时间-信号强度曲线,...目的:探讨3.0T磁共振动态增强检查VIBRANT(Volume Imaging for Breast Assessment,乳腺容积成像序列)技术在乳腺疾病诊断中的价值。方法:回顾性分析经手术病理证实的32例乳腺疾病病人的MRI资料,分析病变信号、形态、时间-信号强度曲线,计算VIBRANT动态增强扫描技术用于诊断良恶性病变的灵敏度、特异度、准确度。结果:采用VIBRANT乳腺动态增强扫描技术后,在保证图像信噪比的条件下,克服了传统动态增强检查的缺点,并且结合病变动态增强后的征象和时间-信号曲线图,明显提高了对乳腺良、恶性病变的诊断,其诊断的敏感性为100%,特异性为81.25%,准确性为93%。乳腺肿瘤动态增强曲线流入型与流出型(P=0.000)、平台型与流出型(P=0.001),差异有统计学意义;流入型与平台型(P=0.209),差异无统计学意义。结论:VIBRANT动态增强扫描技术为乳腺磁共振动态增强检查提供了更新、更好的方法,对提高乳腺疾病诊断的正确性无疑是一种更先进的技术。展开更多
文摘Objective To report use of the Vibrant Soundbridge (VSB) in patients with congenital deformation of the middle and outer ears and investigate its utility in this patient population.Method Four patients with congenital deformation of middle and outer ears underwent VSB implantation. All were male (aged 3-18 years,average 13.5 years) and operated on the left side.Malformation was bilateral in 3 patients and unilateral in 1 patient. Surgical techniques were modified to accommodate each patient’s unique conditions and needs.The implant site was approached via the facial recess in 3 patients and through a retro-facial nerve route in 1 patient. The VSB implant was connected to either the stapes (2 cases) or the round window (2 cases).Pure tone and speech audiometry results and daily communication capabilities before and after VSB activation were compared.Results The operations were successful in all patients, with no complications. The patient communication level improved significantly after VSB activation. Average air conduction pure tone threshold or conditioned reflex audiometry threshold improved by 35 dB in the 0.25-4 kHz range,from 69 dB HL before VSB activation to 34 dB HL after.The sentence recognition rate in quiet at 65 dB SPL went up to 86% from 0% without VSB for patients with bilateral deformation and remained at 100% for the patient with unilateral deformity. However, for the latter patient, the rate improved to 20% from 0% without VSB in noise (-8 dB SNR).Conclusion VSB is an excellent solution for improving hearing in patients with congenital deformation of middle and outer ears.Operation can be completed and good results can be achieved even in patients with unique conditions and needs.
文摘目的:探讨3.0T磁共振动态增强检查VIBRANT(Volume Imaging for Breast Assessment,乳腺容积成像序列)技术在乳腺疾病诊断中的价值。方法:回顾性分析经手术病理证实的32例乳腺疾病病人的MRI资料,分析病变信号、形态、时间-信号强度曲线,计算VIBRANT动态增强扫描技术用于诊断良恶性病变的灵敏度、特异度、准确度。结果:采用VIBRANT乳腺动态增强扫描技术后,在保证图像信噪比的条件下,克服了传统动态增强检查的缺点,并且结合病变动态增强后的征象和时间-信号曲线图,明显提高了对乳腺良、恶性病变的诊断,其诊断的敏感性为100%,特异性为81.25%,准确性为93%。乳腺肿瘤动态增强曲线流入型与流出型(P=0.000)、平台型与流出型(P=0.001),差异有统计学意义;流入型与平台型(P=0.209),差异无统计学意义。结论:VIBRANT动态增强扫描技术为乳腺磁共振动态增强检查提供了更新、更好的方法,对提高乳腺疾病诊断的正确性无疑是一种更先进的技术。
