腔镜技术的发展给全世界的患者带来了巨大的福音,在不影响手术治疗效果的前提下,对于美的追求使得腔镜在原来多孔的基础上发展到现在的单孔手术。妇科单孔腹腔镜手术主要分为传统单孔腹腔镜手术和机器人单孔腹腔镜手术。2010年,传统单...腔镜技术的发展给全世界的患者带来了巨大的福音,在不影响手术治疗效果的前提下,对于美的追求使得腔镜在原来多孔的基础上发展到现在的单孔手术。妇科单孔腹腔镜手术主要分为传统单孔腹腔镜手术和机器人单孔腹腔镜手术。2010年,传统单孔腹腔镜子宫切除术开始流行,但由于手术具有挑战性,逐渐被冷却。2013年3月,美国食品及医药管理局(Food and Drug Administration,FDA)批准了达芬奇单孔子宫全切手术。展开更多
For real-time classification of rock-masses in hard-rock tunnels,quick determination of the rock lithology on the tunnel face during construction is essential.Motivated by current breakthroughs in artificial intellige...For real-time classification of rock-masses in hard-rock tunnels,quick determination of the rock lithology on the tunnel face during construction is essential.Motivated by current breakthroughs in artificial intelligence technology in machine vision,a new automatic detection approach for classifying tunnel lithology based on tunnel face images was developed.The method benefits from residual learning for training a deep convolutional neural network(DCNN),and a multi-scale dilated convolutional attention block is proposed.The block with different dilation rates can provide various receptive fields,and thus it can extract multi-scale features.Moreover,the attention mechanism is utilized to select the salient features adaptively and further improve the performance of the model.In this study,an initial image data set made up of photographs of tunnel faces consisting of basalt,granite,siltstone,and tuff was first collected.After classifying and enhancing the training,validation,and testing data sets,a new image data set was generated.A comparison of the experimental findings demonstrated that the suggested approach outperforms previous classifiers in terms of various indicators,including accuracy,precision,recall,F1-score,and computing time.Finally,a visualization analysis was performed to explain the process of the network in the classification of tunnel lithology through feature extraction.Overall,this study demonstrates the potential of using artificial intelligence methods for in situ rock lithology classification utilizing geological images of the tunnel face.展开更多
The prevalence of fibroids in pregnancy ranges from 2%to 10%.About 10%of these fibroids lead to complications in pregnancy including pain,intrauterine growth restriction,morbidly adherent placentation,placental abrupt...The prevalence of fibroids in pregnancy ranges from 2%to 10%.About 10%of these fibroids lead to complications in pregnancy including pain,intrauterine growth restriction,morbidly adherent placentation,placental abruption,dystocia,and postpartum hemorrhage.1 Pain is the most common complication of fibroids during pregnancy.2 Causes of pain include increased pressure on the fibroid itself,torsion of a pedunculated fibroid,and degeneration due to rapid fibroid growth.2 Pain can first be managed conservatively with rest,hydration,and analgesics;however,if pain is refractory to conservative management,surgical management with myomectomy may be indicated.3 Spyropoulou K et al.4 performed a review of the literature regarding myomectomy in pregnancy.This review found that majority of myomectomies in pregnancy were performed via laparotomy with overall favorable pregnancy outcomes and few complications,concluding that myomectomy in pregnancy is safe in cases not responding to conservative management.展开更多
Prolapse of one or more pelvic organs through the vagina,such as the uterus,bladder,or rectum,is an increasingly common occurrence in the aging female population,with rates approaching 60%of parous women.1 Its associa...Prolapse of one or more pelvic organs through the vagina,such as the uterus,bladder,or rectum,is an increasingly common occurrence in the aging female population,with rates approaching 60%of parous women.1 Its associated symptoms of vaginal bulge or bladder,bowel,or sexual dysfunction can drastically affect a woman's quality of life.Multiple surgical options for the treatment pelvic organ prolapse exist and may involve autologous tissue repair or the use of biological or synthetic grafts.Abdominal sacrocolpopexy,first described in 1957 by Arthure and Savage,involves using the sacrum as a point of support for the vaginal apex.2 The technique was further refined by Huguier and Scali by the incorporation of a graft to improve tissue strength and to improve postoperative anatomical cure rates.3 For many surgeons,abdominal sacrocolpopexy is the preferred surgical technique as it has demonstrated superior outcomes with higher postoperative success rates through restoration of normal anatomy and lower rates of prolapse recurrence and postoperative dyspareunia.展开更多
文摘腔镜技术的发展给全世界的患者带来了巨大的福音,在不影响手术治疗效果的前提下,对于美的追求使得腔镜在原来多孔的基础上发展到现在的单孔手术。妇科单孔腹腔镜手术主要分为传统单孔腹腔镜手术和机器人单孔腹腔镜手术。2010年,传统单孔腹腔镜子宫切除术开始流行,但由于手术具有挑战性,逐渐被冷却。2013年3月,美国食品及医药管理局(Food and Drug Administration,FDA)批准了达芬奇单孔子宫全切手术。
基金funded by the National Natural Science Foundation of China(Grant No.51978460)the Open Fund of State Key Laboratory of Shield Machine and Boring Technology(No.SKLST-2019-K08).
文摘For real-time classification of rock-masses in hard-rock tunnels,quick determination of the rock lithology on the tunnel face during construction is essential.Motivated by current breakthroughs in artificial intelligence technology in machine vision,a new automatic detection approach for classifying tunnel lithology based on tunnel face images was developed.The method benefits from residual learning for training a deep convolutional neural network(DCNN),and a multi-scale dilated convolutional attention block is proposed.The block with different dilation rates can provide various receptive fields,and thus it can extract multi-scale features.Moreover,the attention mechanism is utilized to select the salient features adaptively and further improve the performance of the model.In this study,an initial image data set made up of photographs of tunnel faces consisting of basalt,granite,siltstone,and tuff was first collected.After classifying and enhancing the training,validation,and testing data sets,a new image data set was generated.A comparison of the experimental findings demonstrated that the suggested approach outperforms previous classifiers in terms of various indicators,including accuracy,precision,recall,F1-score,and computing time.Finally,a visualization analysis was performed to explain the process of the network in the classification of tunnel lithology through feature extraction.Overall,this study demonstrates the potential of using artificial intelligence methods for in situ rock lithology classification utilizing geological images of the tunnel face.
文摘The prevalence of fibroids in pregnancy ranges from 2%to 10%.About 10%of these fibroids lead to complications in pregnancy including pain,intrauterine growth restriction,morbidly adherent placentation,placental abruption,dystocia,and postpartum hemorrhage.1 Pain is the most common complication of fibroids during pregnancy.2 Causes of pain include increased pressure on the fibroid itself,torsion of a pedunculated fibroid,and degeneration due to rapid fibroid growth.2 Pain can first be managed conservatively with rest,hydration,and analgesics;however,if pain is refractory to conservative management,surgical management with myomectomy may be indicated.3 Spyropoulou K et al.4 performed a review of the literature regarding myomectomy in pregnancy.This review found that majority of myomectomies in pregnancy were performed via laparotomy with overall favorable pregnancy outcomes and few complications,concluding that myomectomy in pregnancy is safe in cases not responding to conservative management.
文摘Prolapse of one or more pelvic organs through the vagina,such as the uterus,bladder,or rectum,is an increasingly common occurrence in the aging female population,with rates approaching 60%of parous women.1 Its associated symptoms of vaginal bulge or bladder,bowel,or sexual dysfunction can drastically affect a woman's quality of life.Multiple surgical options for the treatment pelvic organ prolapse exist and may involve autologous tissue repair or the use of biological or synthetic grafts.Abdominal sacrocolpopexy,first described in 1957 by Arthure and Savage,involves using the sacrum as a point of support for the vaginal apex.2 The technique was further refined by Huguier and Scali by the incorporation of a graft to improve tissue strength and to improve postoperative anatomical cure rates.3 For many surgeons,abdominal sacrocolpopexy is the preferred surgical technique as it has demonstrated superior outcomes with higher postoperative success rates through restoration of normal anatomy and lower rates of prolapse recurrence and postoperative dyspareunia.
