检索结果-南通市图书馆

Semantic Segmentation of lumbar vertebrae Using Meijering U-Net(MU-Net)on Spine Magnetic Resonance Images

Computer Modeling in Engineering & Sciences 2025年第1期142卷 733-757页

作者： Lakshmi S V V Shiloah Elizabeth Darmanayagam Sunil Retmin Raj Cyril Department of Computer Science and Engineering College of Engineering GuindyAnna UniversityChennai600025India Department of Information Technology Madras Institute of TechnologyAnna UniversityChrompetChennai600044India

Lower back pain is one of the most common medical problems in the world and it is experienced by a huge percentage of people *** to its ability to produce a detailed view of the soft tissues,including the spinal cord,nerves,intervertebral discs,and vertebrae,Magnetic Resonance Imaging is thought to be the most effective method for imaging the *** semantic segmentation of vertebrae plays a major role in the diagnostic process of lumbar *** is difficult to semantically partition the vertebrae in Magnetic Resonance Images from the surrounding variety of tissues,including muscles,ligaments,and intervertebral discs.U-Net is a powerful deep-learning architecture to handle the challenges of medical image analysis tasks and achieves high segmentation *** work proposes a modified U-Net architecture namely MU-Net,consisting of the Meijering convolutional layer that incorporates the Meijering filter to perform the semantic segmentation of lumbar vertebrae L1 to L5 and sacral vertebra ***-colour mask images were generated and used as ground truth for training the *** work has been carried out on 1312 images expanded from T1-weighted mid-sagittal MRI images of 515 patients in the lumbar Spine MRI Dataset publicly available from Mendeley *** proposed MU-Net model for the semantic segmentation of the lumbar vertebrae gives better performance with 98.79%of pixel accuracy(PA),98.66%of dice similarity coefficient(DSC),97.36%of Jaccard coefficient,and 92.55%mean Intersection over Union(mean IoU)metrics using the mentioned dataset.

关键词： Computer aided diagnosis(CAD) magnetic resonance imaging(MRI) semantic segmentation lumbar vertebrae deep learning U-Net model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Scedosporium apiospermum infection of the lumbar vertebrae:A case report

引用

World Journal of Clinical Cases 2022年第10期10卷 3251-3260页

作者： Xue-Wen Shi Sheng-Tang Li Jin-Peng Lou Bo Xu Jian Wang Xin Wang Hua Liu Song-Kai Li Ping Zhen Tao Zhang Orthopaedic Centers The 940^(th) Hospital of Joint Logistics Support Force of Chinese People’s Liberation ArmyLanzhou 730050Gansu ProvinceChina Orthopaedic Centers The Clinical Medical College of Ningxia Medical UniversityYinchuan 750000Ningxia Hui Autonomous RegionChina Orthopaedic Centers The Second Clinical Medical College of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina Orthopaedic Centers The Clinical Medical College of Gansu University of Traditional Chinese MedicineLanzhou 730000Gansu ProvinceChina

BACKGROUND Scedosporium apiospermum(***)is a clinically rare and aggressive fungus mainly found in contaminated water,wetlands,decaying plants,stagnant water,and potted plants in *** lung,bone,joint,eye,brain,skin,and other sites are easily infected,and there is a marked risk of *** have been few case reports of infection by *** of the lumbar vertebrae;most reports have focused on infection of the *** SUMMARY An otherwise healthy 60-year-old man presented with a 4-mo history of lumbosacral pain,stooping,and limited *** symptoms were significantly aggravated 10 d prior to hospitalization,and radiating pain in the back of his left lower leg developed,which was so severe that he could not *** of the lumbar spine was significantly limited,anterior flexion was about 30°;backward extension,right and left lateral curvature,and rotational mobility were about 10°;tenderness of the spinous processes of the lumbar 3-5 vertebrae was evident,and the muscle strength of both lower limbs was gradeⅣ.Imaging suggested bony destruction of the lumbar 3,4,and 5 vertebrae and sacral 1 vertebra;in addition,the corresponding intervertebral spaces were narrowed and the lumbar 5 vertebra was posteriorly displaced and *** vertebral infection was also noted,and the possibility of lumbar tuberculosis was *** first performed surgical intervention on the lesioned lumbar vertebrae,cleared the infected lesion,and performed stable fixation of the lesioned vertebral body using a lumbar internal fixation device,which restored the stability of the lumbar *** and pathological examination of the lesioned tissue removed during surgery confirmed *** infection of the lumbar vertebrae;on this basis,the patient was administered *** the 6-mo followup,efficacy was significant,no drug-related side effects were observed,and imaging examination showed no evidence of ***

关键词： Scedosporium apiospermum lumbar vertebrae Fungal infection Treatment Voriconazole Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Treatment of osteoporotic compression fracture of thoracic/lumbar vertebrae by kyphoplasty with SKY bone expander system

引用

Chinese Journal of Traumatology 2010年第5期13卷 270-274页

作者：熊健党育姜保国付中国张殿英 Department of Trauma and Orthopaedics People's Hospital Peking University Beijing 100044 China

Objective： To investigate prospectively the effectiveness ofkyphoplasty with SKY bone expander system in treatment of compression fracture of thoracic/ lumbar vertebrae and correction of the deformity. Methods： Twenty-five patients with thoracic/lumbar vertebral osteoporotic compression fracture were admitted to our hospital between March 2007 and March 2008, and treated by kyphoplasty with SKY bone expander system. Patient＇s pain status was rated with Visual Analogue Scale （VAS） score system 1 day before and 1 hour, 48 hours, 6 months, 12 months after surgery. In addition, Rolland-Mor- ris and Oswestry disability questionnaires （RDQ and ODI） were used for survey 1 day before and 1, 6, 12 months after surgery. Pre- and post-operative vertebral heights and Cobb＇s angles were measured based on the X-ray films and statistically analyzed. Results： There were 27 fractured vertebrae in these 25 patients. After SKY kyphoplasty, the Cobb＇s angles （9.8°±9.76°） were significantly reduced compared with preoperative angles （17.18°±9.35°, P〈0.05）, and the average improve- ment rate was 39%. Patients＇ pain VAS scores were also greatly improved after operation （P〈0.05）. Moreover, postoperative RDQ and ODI scores were significantly smaller than preoperative values （P〈0.05）. Conclusions： Kyphoplasty with SKY bone expander system provides an effective method for treating thoracic/ lumbar vertebral osteoporotic compression fracture, with the advantages of small surgical wound and short duration. It can effectively recover the anterior and medial heights of fractured vertebrae （33% and 50%, respectively）, reduce the Cobb＇s angle, quickly alleviate pain and improve patients＇ quality of life in a relatively short time period.

关键词： Fractures, bone Thoracic vertebrae lumbar vertebrae Vertebroplasty Pain Osteoporosis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comparison of stress distribution of thoracolumbar vertebrae under forces with CT value

引用

Chinese Journal of Traumatology 2000年第4期3卷 219-222页

作者：刘雷陈一平衡代忠张聪罗先蓉姚一民沈根标 The Air Force Hospital of Chengdu Tangdu Hospital of the Fourth Military Medical University

To provide a new method to estimate the effectiveness of thoracolumbar vertebral finite element model. Methods: A mechanical model of human thoracolumbar vertebrae motion segment was made using three-dimensional finite element method and the stress distribution of vertically compressed thoracolumbar vertebrae was analyzed, meanwhile, 20 patients with burst fracture of thoracolumbar vertebrae were tested by CT to calculated average CT value at ascertained different points of thoracolumbar vertebrae. The calculated results and effective stress at the same position were analyzed with straight line correlation. Results: The stress level of different position of thoracolumbar vertebrae under vertical compressive force was positively correlated with the correlative CT value, and the regressive style, Y= 214.028 + 45.268 X, r= 0.7386 , Plumbar vertebrae injuries under different forces has clinical significance.

关键词： Thoracic vertebrae lumbar vertebrae Wounds and injuries Stress distribution Tomography, X-ray computed

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The influence of the intervertebral disc on stress distribution of the thoracolumbar vertebrae under destructive load

引用

Chinese Journal of Traumatology 2002年第5期5卷 279-283页

作者：刘雷裴福兴宋跃明邹力张聪周宗科 Department of Orthopaedic The West China Hospital Sichuan University Chengdu 610041 China Department of Orthopaedic Surgery the 452nd Hospital of PLA Chengdu 610021 China

Objective: To compare the influence of normal and degenerative discs on stress distribution of the thoracolumbar vertebrae under destructive load, explore the biomechanical background and clinical meaning and provide theoretical basis for clinical diagnosis and treatment. Methods: A mechanical model of thoracolumbar motion segment of normal and degenerative discs was built with a three dimensional finite element method and three stresses of vertical compression, compressive flexion and distractive flexion were comparatively analyzed. Results: With vertical compression and compressive flexion loads, the thoracolumbar motion segment of the normal disc showed that the central part of the upper and lower end plates of the vertebrae and the central part of the trabecular bone adjacent to the end plate were loaded with the most intensive stresses, meanwhile, the postero lateral part of the annulus fibrosus was concentrated with stresses. Degenerative disc showed that the stress distribution of the trabecular bone was relatively averaged, the stresses of the central part adjacent to the end plate were low, while at the same time, the stresses of the peripheral part were elevated relatively. With distraction flexion load, the stresses of the cortex bone, trabecular bone, end plate and annulus fibrosus of the thoracolumbar vertebrae of degenerative discs were low, meanwhile, the stresses of the posterior structure of the vertebral body were relatively elevated compared with that of normal discs. Conclusions: There is difference in influence between normal and degenerative discs on the stress distribution of the thoracolumbar vertebrae with destructive load. The transferring way of load is changed after disc degeneration.

关键词： Thoracic vertebrae lumbar vertebrae Wounds and injuries Biomechanics Intervertebral disk Stress distribution

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

THE　EFFECT　OF　POSTERIOR　ELEMENT　RESECTION　ON　THE　STRESS　DISTRIBUTION　IN　THE　lumbar　SPINEA

引用

Chinese Medical Sciences Journal 1995年第2期10卷 113-115页

作者：戴力扬成培来屠开元徐印坎张文明 DepartmentofOrthopedics ChangzhengHospitalShanghai200003 TianjinInstituteofTechnology Tianjin

A three-dimensional finite element model of the lumbar motion segment was used to predict the stress distribution in lumbar spine with posterior element resection. It was shown that the stress level in all parts of the lumbar spine was elevated although the stress distribution remained unchanged. The authors concluded that the posterior element resection in lumbar surgery should be avoided as much as possible.

关键词： lumbar vertebrae laminectomy biomechanics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Protrusion of lumbar Intervertebral Disc Treated by Ultra Short Wave and the Point Injection in 40 Cases

引用

Journal of Traditional Chinese Medicine 2003年第1期23卷 43-44页

作者：张彩芳陈正秋 The TCM Hospital of Linyi City LinyiShandong Province276002

Since 1996,the author has treated 40 cases of protrusion of lumbar intervertebral disc with ultra short wave and the point injection,and obtained good therapeutic *** is reported as follows.

关键词： Acupuncture Points lumbar vertebrae Short-Wave Therapy Adult Combined Modality Therapy Female Humans Injections Intervertebral Disk Displacement Male Middle Aged Thiamine Vitamin B 12

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

lumbar SPINAL STENOSIS: A REVIEW OF BIOMECHANICAL STUDIES

引用

Chinese Medical Sciences Journal 1998年第1期13卷 56-60页

作者：戴力扬徐印坎 Department of Orthopaedics Changzheng Hospital Second Military Medical University Shanghai 200003.

Objective. To investigate the biomechanical aspects of etiology,pathology, clinical manifestation, diagnosis and surgical treatment of the lumbar spinal stenosis. Methods’ A series of biomechanical methods, such as three-dimensional finite element models. three-dimensional kinematic measurement, cadeveric evaluation, and imaging assessment was applied to correlate lumbar biomechanics and lumbar spinal stenosis. Surgery of lumbar spinal stenosis has been improved. Results. The stresses significantly concentrate on the posterolateral part of the annulus fibrosus of disc, the posterior surface of vertebral body, the pedicle, the interarticularis and the facet joints. This trend is intensified by disc degeneration and lumbar backward extension. Posterior element resection has a definite effect upon the biomechanical behavior of lumbar vertebrae. The improved operations proved satis- factory. Conclusion. Stress concentration in the lumbar vertebrae is of importance to the etiology of degenerative lumbar spinal stenosis, and disc degeneration is the initial key of this process. Then these will be aggravated by backward extension. Functional radiography and myelography are of assistance to the diagnosis o f the lumbar spinal stenosis. For the surgical treatment of the lumbar spinal stenosis, destruction of the posterior element should be avoid as far as possible based upon the thorough decompression. Maintaining the lumbar spine in flexion by fusion after decompression has been proved a useful method. When developmental spinal stenosis is combined with disc herniation, discectomy through laminotomy is recommend for decompression.

关键词： lumbar vertebrae spinal canal stenosis biomechanics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Treatment of Protrusion of the lumbar Intervertebral Disc by TCM Massage

引用

Journal of Traditional Chinese Medicine 2002年第2期22卷 126-127页

作者：龙亚军叶环 Santai County Hospital of Traditional Chinese Medicine Sichuan Province 621100

　　Protrusion of the lumbar intervertebral disc is a common disorder frequently encountered in clinic. With TCM massage and the maneuver of manual reduction, we have treated 82 cases of protrusion of the lumbar inter... 详细信息

关键词： lumbar vertebrae Female Humans Intervertebral Disk Displacement Male Massage Traction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Clinical Application of the Triple Puncture

引用

Journal of Traditional Chinese Medicine 2003年第2期23卷 138-139页

作者：周洁孙外主毛树章 Acupuncture Department of Shenzhen Municipal TCM Hospital Shenzhen 518033Guangdong Province

IntroductionTriple puncture, first appeared in Miraculous Pivot (灵枢), is an ancient method of acupuncture, which has been used to treat relatively small and deep disorders caused by pathogenic wind by puncturing the... 详细信息

关键词： lumbar vertebrae Acupuncture Therapy Adult Arm Injuries Female Humans Intervertebral Disk Displacement Male Middle Aged

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：