Summary： This study sought to evaluate the contribution of two-dimensional ultrasound （2D-US） and three-dimensional skeletal imaging ultrasound （3D-SUIS） in the prenatal diagnosis of sirenomelia. Be- tween Septem...Summary： This study sought to evaluate the contribution of two-dimensional ultrasound （2D-US） and three-dimensional skeletal imaging ultrasound （3D-SUIS） in the prenatal diagnosis of sirenomelia. Be- tween September 2010 and April 2014, a prospective study was conducted in a single referral center using 3D-SU1S performed after 2D-US in 10 cases of sirenomelia. Diagnostic accuracy and detailed findings were compared with postnatal three-dimensional helical computed tomography （3D-HCT）, radiological findings and autopsy. Pregnancy was terminated in all 10 sirenomelia cases, including 9 singletons and I conjoined twin pregnancy, for a total of 5 males and 5 females. These cases of sirenomelia were deter- mined by autopsy and/or chromosomal examination. Initial 2D-US showed that there were 10 cases of oligohydranmios, bilateral renal agenesis, bladder agenesis, single umbilical artery, fusion of the lower limbs and spinal abnormalities; 8 cases of dipus or monopus; 2 cases of apus; and 8 cases of cardiac abnormalities. Subsequent 3D-SUIS showed that there were 9 cases of scoliosis, l0 cases of sacrococ- cygeal vertebra dysplasia, 3 cases of hemivertebra, 1 case of vertebral fusion, 3 cases of spina bifida, and 5 cases of rib abnormalities. 3D-SUIS identified significantly more skeletal abnormalities than did 2D-US, and its accuracy was 79.5% （70/88） compared with 3D-HCT and radiography. 3D-SUIS seems to be a useful complementary method to 2D-US and may improve the accuracy of identifying prenatal skeletal abnormalities related to sirenomelia.展开更多
The purpose of the study is to reconstruct the coronary arteries in 3 dimension (3D) from serial intravascular ultrasound (IVUS) images generated during a pullback of IVUS catheter. Slowly pullback. real-time, cross-s...The purpose of the study is to reconstruct the coronary arteries in 3 dimension (3D) from serial intravascular ultrasound (IVUS) images generated during a pullback of IVUS catheter. Slowly pullback. real-time, cross-sectional IVUS images of 18 patients (2 with normal coronary arteries. 1 with coronary aneurysm. and 15 post PTCA) were obtained by using a 20 MHz. 3.5F IVUS catheter and recorded on video tape. A series of 90-frame consecutive IVUS images were digitized into a SUN Spare 11 workstation. Digitized data were reconstructed to 3D images with use of voxel space modeling and were generated in both sagittal and cylindrical formats. The sagittal format results in a longitudinal展开更多
Cutaneous neurofibroma(cNF)is a prevalent clinical manifestation of neurofibromatosis type 1,significantly affecting the well-being and quality of life of the affected individuals.The adoption of reliable and reproduc...Cutaneous neurofibroma(cNF)is a prevalent clinical manifestation of neurofibromatosis type 1,significantly affecting the well-being and quality of life of the affected individuals.The adoption of reliable and reproducible volumetric measurement techniques is essential for precisely evaluating tumor burden and plays a critical role in the development of effective treatments for cNF.This study focuses on widely used volumetric measurement techniques,including vernier calipers,ultrasound,computed tomography,magnetic resonance imaging,and three-dimensional scanning imaging.It outlines the merits and drawbacks of each technique in assessing the cNF load,providing an overview of their current applications and ongoing research advancements in this domain.展开更多
目的探讨盆底二维超声结合三维超声断层成像(TUI)在未育女性压力性尿失禁(SUI)中的临床应用。方法选择2019年1月至2020年12月在西安医学院第二附属医院妇科门诊接诊有流产史未育SUI患者120例(试验组1),年龄21~38岁,平均年龄25.50岁;有...目的探讨盆底二维超声结合三维超声断层成像(TUI)在未育女性压力性尿失禁(SUI)中的临床应用。方法选择2019年1月至2020年12月在西安医学院第二附属医院妇科门诊接诊有流产史未育SUI患者120例(试验组1),年龄21~38岁,平均年龄25.50岁;有流产史无SUI患者80例(试验组2),年龄21~38岁,平均年龄24.49岁;选择同期体检的健康女性50例(对照组),年龄21~38岁,平均年龄25.75岁。行盆底二维超声检查,观察在静息状态和Valsalva动作下膀胱颈、尿道内口形态变化、尿道内口是否有漏斗形成,记录膀胱逼尿肌厚度(DWT)、膀胱颈移动度(BND)、膀胱尿道后角(RA)及尿道旋转角(URA)变化;三维TUI检查,观察膀胱颈、尿道内口形态变化及盆膈裂孔解剖结构及形态学变化,统计膀胱尿道内口漏斗发生率。结果试验组1、试验组2、对照组在静息状态、Valsalva动作下膀胱DWT、膀胱RA、BND、URA比较(静息状态,DWT:4.93 mm±0.39 mm vs 3.38 mm±0.35 mm vs 2.49 mm±0.30 mm;RA:158.70°±5.70°vs 121.40°±5.10°vs 92.50°±4.50°;BND:29.60°±3.30°vs 17.70°±3.00°vs 12.50°±2.70°;URA:78.40°±4.50°vs57.80°±4.20°vs 32.20°±3.70°。Valsalva动作下,DWT:5.02 mm±0.50 mm vs 3.42 mm±0.48 mm vs 2.54 mm±0.39 mm;RA:160.60°±6.60°vs 122.40°±6.20°vs 93.50°±5.50°;BND:30.50°±3.40°vs 18.60°±3.20°vs 12.90°±2.80°;URA:79.60°±4.80°vs 58.90°±4.30°vs 33.20°±3.20°),差异有显著统计学意义(P <0.01)。静息状态及Valsava动作下试验组1的DWT、RA、BND、URA高于试验组2、对照组(P <0.05),试验组2的DWT、RA、BND、URA高于对照组(P <0.05)。各组在静息状态、收缩肛门运动、Valsalva动作下盆膈裂孔面积、前后径、左右径及肛提肌厚度比较,差异有显著统计学意义(P <0.01);静息状态、收缩肛门运动及Valsava动作下试验组1盆膈裂孔面积、前后径、左右径及肛提肌厚度高于试验组2、对照组(P <0.05),试验组2盆膈裂孔面积、前后径、左右径及肛提肌厚度高于对照组(P <0.05)。试验组1膀胱尿道内口漏斗形成率51.67%(62/120),高于试验组2的26.25%(21/80)、对照组10.00%(5/50),差异有统计学意义(P <0.05)。结论盆底二维超声结合三维TUI应用于未育女性SUI中,对观测膀胱颈、尿道内口形态及盆膈裂孔解剖结构及形态学异常情况,具有一定的诊断价值。展开更多
文摘Summary： This study sought to evaluate the contribution of two-dimensional ultrasound （2D-US） and three-dimensional skeletal imaging ultrasound （3D-SUIS） in the prenatal diagnosis of sirenomelia. Be- tween September 2010 and April 2014, a prospective study was conducted in a single referral center using 3D-SU1S performed after 2D-US in 10 cases of sirenomelia. Diagnostic accuracy and detailed findings were compared with postnatal three-dimensional helical computed tomography （3D-HCT）, radiological findings and autopsy. Pregnancy was terminated in all 10 sirenomelia cases, including 9 singletons and I conjoined twin pregnancy, for a total of 5 males and 5 females. These cases of sirenomelia were deter- mined by autopsy and/or chromosomal examination. Initial 2D-US showed that there were 10 cases of oligohydranmios, bilateral renal agenesis, bladder agenesis, single umbilical artery, fusion of the lower limbs and spinal abnormalities; 8 cases of dipus or monopus; 2 cases of apus; and 8 cases of cardiac abnormalities. Subsequent 3D-SUIS showed that there were 9 cases of scoliosis, l0 cases of sacrococ- cygeal vertebra dysplasia, 3 cases of hemivertebra, 1 case of vertebral fusion, 3 cases of spina bifida, and 5 cases of rib abnormalities. 3D-SUIS identified significantly more skeletal abnormalities than did 2D-US, and its accuracy was 79.5% （70/88） compared with 3D-HCT and radiography. 3D-SUIS seems to be a useful complementary method to 2D-US and may improve the accuracy of identifying prenatal skeletal abnormalities related to sirenomelia.
文摘The purpose of the study is to reconstruct the coronary arteries in 3 dimension (3D) from serial intravascular ultrasound (IVUS) images generated during a pullback of IVUS catheter. Slowly pullback. real-time, cross-sectional IVUS images of 18 patients (2 with normal coronary arteries. 1 with coronary aneurysm. and 15 post PTCA) were obtained by using a 20 MHz. 3.5F IVUS catheter and recorded on video tape. A series of 90-frame consecutive IVUS images were digitized into a SUN Spare 11 workstation. Digitized data were reconstructed to 3D images with use of voxel space modeling and were generated in both sagittal and cylindrical formats. The sagittal format results in a longitudinal
文摘Cutaneous neurofibroma(cNF)is a prevalent clinical manifestation of neurofibromatosis type 1,significantly affecting the well-being and quality of life of the affected individuals.The adoption of reliable and reproducible volumetric measurement techniques is essential for precisely evaluating tumor burden and plays a critical role in the development of effective treatments for cNF.This study focuses on widely used volumetric measurement techniques,including vernier calipers,ultrasound,computed tomography,magnetic resonance imaging,and three-dimensional scanning imaging.It outlines the merits and drawbacks of each technique in assessing the cNF load,providing an overview of their current applications and ongoing research advancements in this domain.
文摘目的探讨盆底二维超声结合三维超声断层成像(TUI)在未育女性压力性尿失禁(SUI)中的临床应用。方法选择2019年1月至2020年12月在西安医学院第二附属医院妇科门诊接诊有流产史未育SUI患者120例(试验组1),年龄21~38岁,平均年龄25.50岁;有流产史无SUI患者80例(试验组2),年龄21~38岁,平均年龄24.49岁;选择同期体检的健康女性50例(对照组),年龄21~38岁,平均年龄25.75岁。行盆底二维超声检查,观察在静息状态和Valsalva动作下膀胱颈、尿道内口形态变化、尿道内口是否有漏斗形成,记录膀胱逼尿肌厚度(DWT)、膀胱颈移动度(BND)、膀胱尿道后角(RA)及尿道旋转角(URA)变化;三维TUI检查,观察膀胱颈、尿道内口形态变化及盆膈裂孔解剖结构及形态学变化,统计膀胱尿道内口漏斗发生率。结果试验组1、试验组2、对照组在静息状态、Valsalva动作下膀胱DWT、膀胱RA、BND、URA比较(静息状态,DWT:4.93 mm±0.39 mm vs 3.38 mm±0.35 mm vs 2.49 mm±0.30 mm;RA:158.70°±5.70°vs 121.40°±5.10°vs 92.50°±4.50°;BND:29.60°±3.30°vs 17.70°±3.00°vs 12.50°±2.70°;URA:78.40°±4.50°vs57.80°±4.20°vs 32.20°±3.70°。Valsalva动作下,DWT:5.02 mm±0.50 mm vs 3.42 mm±0.48 mm vs 2.54 mm±0.39 mm;RA:160.60°±6.60°vs 122.40°±6.20°vs 93.50°±5.50°;BND:30.50°±3.40°vs 18.60°±3.20°vs 12.90°±2.80°;URA:79.60°±4.80°vs 58.90°±4.30°vs 33.20°±3.20°),差异有显著统计学意义(P <0.01)。静息状态及Valsava动作下试验组1的DWT、RA、BND、URA高于试验组2、对照组(P <0.05),试验组2的DWT、RA、BND、URA高于对照组(P <0.05)。各组在静息状态、收缩肛门运动、Valsalva动作下盆膈裂孔面积、前后径、左右径及肛提肌厚度比较,差异有显著统计学意义(P <0.01);静息状态、收缩肛门运动及Valsava动作下试验组1盆膈裂孔面积、前后径、左右径及肛提肌厚度高于试验组2、对照组(P <0.05),试验组2盆膈裂孔面积、前后径、左右径及肛提肌厚度高于对照组(P <0.05)。试验组1膀胱尿道内口漏斗形成率51.67%(62/120),高于试验组2的26.25%(21/80)、对照组10.00%(5/50),差异有统计学意义(P <0.05)。结论盆底二维超声结合三维TUI应用于未育女性SUI中,对观测膀胱颈、尿道内口形态及盆膈裂孔解剖结构及形态学异常情况,具有一定的诊断价值。
