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An Ultrasonic Backscatter Instrument for Cancellous Bone Evaluation in Neonates 被引量:3
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作者 Chengcheng Liu Rong Zhang +3 位作者 Ying Li Feng Xu Dean Ta Weiqi Wang 《Engineering》 SCIE EI 2015年第3期336-343,共8页
Ultrasonic backscatter technique has shown promise as a noninvasive cancellous bone assessment tool. A novel ultrasonic backscatter bone diagnostic (UBBD) instrument and an in vivo application for neonatal bone eval... Ultrasonic backscatter technique has shown promise as a noninvasive cancellous bone assessment tool. A novel ultrasonic backscatter bone diagnostic (UBBD) instrument and an in vivo application for neonatal bone evaluation are introduced in this study. The UBBD provides several advantages, including noninvasiveness, non- ionizing radiation, portability, and simplicity. In this study, the backscatter signal could be measured within 5 s using the UBBD. Ultrasonic backscatter measurements were performed on 467 neonates (268 males and 199 females) at the left calcaneus. The backscatter signal was measured at a central frequency of 3.5 MHz. The delay (-/-1) and duration (7-2) of the backscatter signal of interest (SOl) were varied, and the apparent integrated backscatter (AIB), frequency slope of apparent backscatter (FSAB), zero frequency intercept of apparent backscatter (FIAB), and spectral centroid shift (SCS) were calculated. The results showed that the SOl selection had a direct influence on cancellous bone evaluation. The AIB and FIAB were positively correlated with the gestational age (|R| up to 0.45, P 〈 0.001) when -/-1 was short (〈 8 μS), while negative correlations (|R| up to 0.56, P 〈 0.001) were commonly observed for T1 〉 10 IJS. Moderate positive correlations (IRI up to 0.45, P 〈 0.001) were observed for FSAB and SCS with gestational age when 71 was long (〉 10 μs). The 7-2 mainly introduced fluctuations in the observed correlation coefficients. The moderate correlations observed with UBBD demonstrate the feasibility of using the backscatter signal to evaluate neonatal bone status. This study also proposes an explicit standard for in vivo SOl selection and neonatal cancellous bone assessment. 展开更多
关键词 ultrasonic backscatter cancellous bone evaluation signal of interest (SOI) backscatter instrument neonatal bone status
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The Relationship of Cavitation to the Negative Acoustic Pressure Amplitude in Ultrasonic Therapy 被引量:1
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作者 范庭波 屠娟 +3 位作者 罗林姣 郭霞生 黄品同 章东 《Chinese Physics Letters》 SCIE CAS CSCD 2016年第8期59-63,共5页
The relationship between the cavitation and acoustic peak negative pressure in the high-intensity focused ultrasound (HIFU) field is analyzed in water and tissue phantom. The peak negative pressure at the focus is d... The relationship between the cavitation and acoustic peak negative pressure in the high-intensity focused ultrasound (HIFU) field is analyzed in water and tissue phantom. The peak negative pressure at the focus is determined by a hybrid approach combining the measurement with the simulation. The spheroidal beam equation is utilized to describe the nonlinear acoustic propagation. The waveform at the focus is measured by a fiber optic probe hydrophone in water. The relationship between the source pressure amplitude and the excitation voltage is determined by fitting the measured ratio of the second harmonic to the fundamental component at the focus, based on the model simulation. Then the focal negative pressure is calculated for arbitrary voltage excita- tion in water and tissue phantom. A portable B-mode ultrasound scanner is applied to monitor HIFU-indueed cavitation in real time, and a passive cavitation detection (PCD) system is used to acquire the bubble scattering signals in the HIFU focal volume for the cavitation quantification. The results show that: (1) unstable cavitation starts to appear in degassed water when the peak negative pressure of HIFU signals reaches 13.5 MPa; and (2) the cavitation activity can be detected in tissue phantom by B-mode images and in the PCD system with HIFU peak negative pressures of 9.0 MPa and 7.8 MPa, respectively, which suggests that real-time B-mode images could be used to monitor the cavitation activity in two dimensions, while PCD systems are more sensitive to detect scattering and emission signals from cavitation bubbles. 展开更多
关键词 of on HIFU The Relationship of Cavitation to the Negative Acoustic Pressure Amplitude in ultrasonic therapy in MODE is for
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The cleaning efficiency of the root canal after different instrumentation technique and irrigation protocol:A SEM analysis 被引量:1
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作者 Ferit Kocani Blerim Kamberi +2 位作者 Edmond Dragusha Shefqet Mrasori Fehim Haliti 《Open Journal of Stomatology》 2012年第2期69-76,共8页
Aim: The objective of this study was to evaluate the effectiveness of manual and ultrasonic instrumentation with varying irrigation protocols on removal of the smear layer from root canal walls. Methods: Forty extract... Aim: The objective of this study was to evaluate the effectiveness of manual and ultrasonic instrumentation with varying irrigation protocols on removal of the smear layer from root canal walls. Methods: Forty extracted single rooted human teeth stored in 0.5% saline were used. Periodontal soft tissues were removed followed by crown separation at the CEJ. All the teeth were randomly divided into two groups. Manually Instrumented Group 1 was irrigated with 5.25% NaOCl and 17% EDTA alternately, same as Ultrasonically Instrumented Group 2. The controls for both groups were irrigated with saline solution. Results: Ultrasonic instrumentation and the combined use of two different solutions (5.25% NaOCl and 17% EDTA) yielded better results on smear removal. Conclusions: Irrigation with 17% EDTA followed by 5.25% NaOCl was successful in complete removal of smear layer on cervical and middle thirds of the root canals. Ultrasonic instrumentation was slightly more successful on the apical one third of the root canals. 展开更多
关键词 Smear Layer instrumentation MANUAL ultrasonic CLEANING IRRIGATION
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The Effect of Ultrasonic Method for Preparing Root Canals:A Scanning Electron Microscopic Evaluation
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作者 吴友农 黄力子 史俊南 《Journal of Medical Colleges of PLA(China)》 CAS 1989年第4期351-353,390,共4页
Sixteen fresh extracted human teeth paired according to their anatomic locations,were divided into two groups at random.The root canais of the teeth in Group 1 were preparedwith an ultrasonic unit and those of Group 2... Sixteen fresh extracted human teeth paired according to their anatomic locations,were divided into two groups at random.The root canais of the teeth in Group 1 were preparedwith an ultrasonic unit and those of Group 2 with hand instruments.Then,the specimens wereobserved under a scanning electron microscope and their pnotographs were taken.Blindevaluation of cleanness was performed for each canal.Statistical dnalysis of the data indicatesthat the canal walls were cleaner in Group 1 than in Group 2 and that the ultrasonic preparationtook less time. 展开更多
关键词 ROOT CANAL therapy ultrasonicS
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Low Frequency Ultrasonication Induced Antitumor Effect in 5-Aminolevulinic Acid Treated Malignant Glioma
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作者 Fumio Yamaguchi Takayuki Asakura +2 位作者 Hiroshi Takahashi Takayuki Kitamura Akira Teramoto 《Journal of Cancer Therapy》 2013年第1期170-175,共6页
We investigated the feasibility of sonodynamic therapy for glioma by low frequency ultrasoundwith5-aminolevulinic acid (5-ALA), a precursor of protoporphyrin IX (PpIX) in heme synthetic process. In vivo tumor model wa... We investigated the feasibility of sonodynamic therapy for glioma by low frequency ultrasoundwith5-aminolevulinic acid (5-ALA), a precursor of protoporphyrin IX (PpIX) in heme synthetic process. In vivo tumor model was made by inoculating human glioma cell line U87-MG subcutaneously in nude mice. The tumor was sonicated by 25-kHz ultrasound 4 hours following administration of 5-ALA. The tumor size decreased in 5-ALA administered (ALA(+)US(+)) mice, while increased in non-5-ALA administrated (ALA(-)US(+)) mice and non-sonicated mice (ALA(+)US(-)). The immunohistochemical analysis revealed an apoptotic change in tumor tissue of ALA(+)US(+) mice. The results showed the therapeutic effect of 25 kHz ultrasound for the glioma in 5-ALA administered tumor-bearing mice by inducing apoptotic change of tumor cells. This is a first report to elucidate the feasibility of therapeutic use of 25 kHz, relatively low frequency, ultrasound in sonodynamic therapy using 5-ALA as a sonosensitizer precursor. The utilization of this frequency will contribute to the development of sonodynamic therapy for gliomas and the spread of this technique in many hospitals that possess ultrasonic aspirators. 展开更多
关键词 GLIOMA Sonodynamic therapy 5-Aminolevulinic ACID PROTOPORPHYRIN IX ultrasonication
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Ultrasonic piezotome surgery: is it a benefit for our patients and does it extend surgery time? A retrospective comparative study on the removal of 100 impacted mandibular 3rd molars
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作者 Angelo Troedhan Andreas Kurrek Marcel Wainwright 《Open Journal of Stomatology》 2011年第4期179-184,共6页
Aim of the study was to evaluate if there is a constant and significant reduction in traumaticity when mas- sively traumatic oral surgical procedures such as the removal of third molars are conducted with only ul- tra... Aim of the study was to evaluate if there is a constant and significant reduction in traumaticity when mas- sively traumatic oral surgical procedures such as the removal of third molars are conducted with only ul- trasonic surgical devices (Piezotomes) expressed in a reduction of postsurgical pain and swelling on the patient’s side since such clinical experiences by the authors suggested this. Since oral surgeons criticize a higher time consumption for surgeries with Piezoto- mes also the objective time consumption was evalu- ated and compared to the traditional methods. Mate- rial and Methods: 56 female and male patients were selected that already underwent a removal of an im- pacted third mandibular molar on one side with rota- ry instruments by bone destructive burring with a still persisting comparable third mandibular molar on the contralateral side complaining about recur- rent pain episodes and were already documented for pain and swelling before. The ultrasonic surgical re- moval with the Piezotome was conducted with a buc- cal osteotomy of the compacta lateral to the impacted third molar, preservation of the resected compacta in saline solution, removal of the third molar by single or multiple dentotomy and full anatomical restitution of the surgical site with the preserved buccal com- pacta. The swelling was documented by kephalome- try 24/48/72 hours and 1 week post surgery, the pain index by the total consumption of ibuprofen-400 mg—tablets. Lesions of the mandible nerve were documented. Netto surgery time was taken from the first incision to the last suture of the procedure. Re-sults: 6 patients had to be excluded from evaluation due to incomplete post surgical follow up. A signify-cant (***, p > 0.999) decrease in pain and swelling of 50% was detected both for the parameters swelling and pain with Piezotome-surgery. No lesions of the mandible nerve were detected with Piezotome sur- gery whereas surgery with rotary instruments re- sulted in 16% hypesthesia at least up to one week. Although netto surgery time was approximately 50% longer when done with the Piezotome at the begin-ning the time consumption normalized with the growing experience of the surgeons back to the time schedule when surgery was performed with rotary instruments revealing no significant differences (-, p < 0.73). Conclusions: The results of this retrospective study suggest that Piezotome-surgery is superior in atraumaticity and soft-tissue safety compared to tra- ditional procedures with burs and grants the patients significantly less post surgical pain and swelling. Al- though—as it is with all new surgical tools and pro- tocols—surgery time is longer at the beginning when purely working with ultrasonic surgical devices time consumption reduces to normal values after a learn- ing curve. 展开更多
关键词 ultrasonic SURGERY Piezotome Rotating instruments Post SURGICAL Swelling Post SURGICAL Pain IMPACTED MANDIBULAR Third MOLARS Osteotomy
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CHINESE HUAI TANG NINE ACUPUNCTURE NEEDLES: RESEARCH ON THE NEW NINE ACUPUNCTURE NEEDLES THERAPY AND THE NEEDLING INSTRUMENTS (CONTINUED)
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《World Journal of Acupuncture-Moxibustion》 1994年第2期57-64,共8页
PART TWOThe Research on Chinese Huai TangNine Acupuncture Needles TherapyI The theoretical basis of ChineseHuai Tang Nine Needles Therapy.1) The kernel of the theoretical basis ofChinese Huai Tang Nine Needles Therapy... PART TWOThe Research on Chinese Huai TangNine Acupuncture Needles TherapyI The theoretical basis of ChineseHuai Tang Nine Needles Therapy.1) The kernel of the theoretical basis ofChinese Huai Tang Nine Needles Therapy.Chinese Huai Tang Nine Needles Therapyis to give full play to the treatment action of thespecifity and entirety of each needle. The speci-fity means that each needle has its own 展开更多
关键词 Th RESEARCH ON THE NEW NINE ACUPUNCTURE NEEDLES therapy AND THE NEEDLING instrumentS ST CONTINUED CHINESE HUAI TANG NINE ACUPUNCTURE NEEDLES
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Research Progress of Atomizers and Drugs Used in Atomization Therapy
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作者 Bozhi LIU Haobo YANG +2 位作者 Yifei CHEN Xiaojing SUN Qian JIANG 《Medicinal Plant》 2024年第4期77-79,82,共4页
At present,the commonly used treatment methods for chronic respiratory diseases are drug,oxygen,interventional and atomization therapy.Atomization therapy is the most widely used because of its characteristics of fast... At present,the commonly used treatment methods for chronic respiratory diseases are drug,oxygen,interventional and atomization therapy.Atomization therapy is the most widely used because of its characteristics of fast effect,high local drug concentration,less drug dosage,convenient application and few systemic adverse reactions.In this paper,the mechanism,characteristics,commonly used drugs and clinical application of atomization therapy are discussed. 展开更多
关键词 ultrasonic atomizer Atomized drugs Atomization therapy
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Evaluation of an Ultrasound-Guided Focused Ultrasound CMUT Probe for Targeted Therapy Applications
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作者 Dominique Gross Mathieu Legros +1 位作者 Philippe Vince Dominique Certon 《Open Journal of Applied Sciences》 2018年第1期25-45,共21页
Capacitive Micromachined Ultrasonic Transducer (CMUT) technology, which has been widely studied in the field of medical imaging, possesses strong design flexibility due to its manufacturing process. Many applications ... Capacitive Micromachined Ultrasonic Transducer (CMUT) technology, which has been widely studied in the field of medical imaging, possesses strong design flexibility due to its manufacturing process. Many applications could benefit from this unique feature, especially those that require different operating ultrasonic frequencies. This article reports on the characterization of the therapeutic low-frequency field provided by an ultrasound-guided focused ultrasound CMUT probe that is connected to a custom ultrasonic scanner for hyperthermia applications. The study begins by mapping the focused ultrasonic beam in the vicinity of the focal spot and a parametric analysis providing the maximum peak-to-peak (PTP) pressure delivered by the probe under different acoustic conditions. The measured maximum PTP pressure at the targeted operating frequency of 1 MHz is 3 MPa, with a maximum of 3.6 MPa at 1.25 MHz. Based on an in vitro setup found in the literature, the temperature elevation at the focal point was measured, showing results in agreement with the targeted applications (max. ΔT = 7.5°C). The article concludes with a reliability study considering the delivered pressure and the self-heating of the CMUT probe: the results show the good stability of the pressure amplitude over 1.8 × 109 cycles at a duty cycle of 40%, with a moderate internal heating of 3°C. 展开更多
关键词 Capacitive Micromachined ultrasonic Transducers CMUT USgFUS TARGETED therapy
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中药外敷联合复合超声关节治疗仪治疗膝骨关节炎的临床效果 被引量:1
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作者 武文渊 冯树豆 +1 位作者 黄磊 张克清 《河南医学研究》 CAS 2024年第5期901-905,共5页
目的探究中药外敷联合复合超声关节治疗仪在膝骨关节炎(KOA)中的应用效果。方法选取2022年8月至2023年8月就诊于安阳市中医院的99例KOA患者为研究对象,随机分为3组,每组33例。超声组接受超声关节治疗仪治疗,中药组接受中药外敷治疗,联... 目的探究中药外敷联合复合超声关节治疗仪在膝骨关节炎(KOA)中的应用效果。方法选取2022年8月至2023年8月就诊于安阳市中医院的99例KOA患者为研究对象,随机分为3组,每组33例。超声组接受超声关节治疗仪治疗,中药组接受中药外敷治疗,联合组接受中药外敷联合超声关节治疗仪治疗。对比3组疗效及治疗前后西安大略和麦克马斯特大学骨关节炎指数(WOMAC)、视觉模拟评分法(VAS)、奎森功能演算(Lequesne)指数评分、成纤维细胞生长因子2(FGF-2)、Ⅰ型胶原C-末端肽(CTX-I)、软骨寡聚基质蛋白(COMP)及不良反应。结果联合组总有效率[93.94%(31/33)]高于超声组[75.76%(25/33)]、中药组[72.73%(24/33)](P<0.05),超声组与中药组总有效率对比,差异无统计学意义(P>0.05);治疗3个疗程后联合组FGF-2高于超声组、中药组,CTX-1、COMP、Lequesne、WOMAC评分低于超声组、中药组(P<0.05),超声组、中药组组间对比,差异无统计学意义(P>0.05);治疗3个疗程后联合组静态、动态VAS评分<中药组<超声组(P<0.05);治疗期间3组均未出现不良反应。结论中药外敷与复合超声关节治疗仪联合治疗KOA患者效果确切,可有效调节骨代谢指标,有助于缓解患者疼痛感,恢复膝关节功能。 展开更多
关键词 中药外敷 复合超声关节治疗仪 膝骨关节炎 骨代谢 疼痛
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痛点触摸下放血疗法与超声引导下穿刺减压治疗急性冈上肌钙化性肌腱炎的疗效比较
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作者 唐浩琛 胡锐 +5 位作者 唐流刚 赵琛 罗倩 王梅 曹广深 刘太 《中国骨伤》 CAS CSCD 2024年第7期689-693,共5页
目的:比较痛点触摸下放血疗法与超声引导下穿刺减压两种方法治疗急性冈上肌钙化性肌腱炎的疗效。方法:2020年1月至2023年1月,选取我科收治的45例急性冈上肌钙化性肌腱炎患者,分成治疗组和对照组,其中治疗组22例,女16例,男6例;年龄20~64(... 目的:比较痛点触摸下放血疗法与超声引导下穿刺减压两种方法治疗急性冈上肌钙化性肌腱炎的疗效。方法:2020年1月至2023年1月,选取我科收治的45例急性冈上肌钙化性肌腱炎患者,分成治疗组和对照组,其中治疗组22例,女16例,男6例;年龄20~64(39.31±5.80)岁;左侧11例,右侧11例;采用超声引导下穿刺减压治疗。对照组23例,女15例,男8例;年龄19~66(40.67±6.13)岁;左侧12例,右侧11例;采用痛点触摸下放血疗法治疗。分别于治疗前、治疗后1周及治疗后1、3、6个月,采用疼痛视觉模拟评分(visual analog scale,VAS),美国加州大学肩关节系统(University of California,Los Angeles,UCLA)评分,肩关节Constant-Murley评分,对治疗效果进行评估。结果:对照组1例,治疗1周后因个人原因放弃随访,其余44例完成全部随访,治疗后6个月,两组患者均未出现复发病例。治疗组和对照组治疗后各时间段的VAS、UCLA、Constant-Murley评分与治疗前比较差异均有统计学意义(P<0.05),但两组间比较差异均无统计学意义(P>0.05)。结论:痛点触摸下放血疗法与超声引导下穿刺减压两种方法治疗急性冈上肌钙化性肌腱炎均疗效明显,操作简单、费用低廉,能够有效减轻局部疼痛,有效改善肩关节功能,基层医院可根据自身情况选择性操作治疗。 展开更多
关键词 超声引导 放血疗法 穿刺 钙化性冈上肌腱炎
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中国心力衰竭患者的药物以及植入器械治疗现状
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作者 吕游 赵静 +2 位作者 蒋瑞辉 王华 袁凤仪 《中华保健医学杂志》 2024年第3期286-289,共4页
目的 调查并分析总结我国住院心力衰竭(HF)患者的病因、合并症、临床特点、植入器械以及药物治疗情况。方法 本研究为横断面调查,选取中国心力衰竭中心注册研究2017年1月~2022年8月169家医院的住院心力衰竭患者,筛选左心室射血分数(LVEF... 目的 调查并分析总结我国住院心力衰竭(HF)患者的病因、合并症、临床特点、植入器械以及药物治疗情况。方法 本研究为横断面调查,选取中国心力衰竭中心注册研究2017年1月~2022年8月169家医院的住院心力衰竭患者,筛选左心室射血分数(LVEF)≤35%的患者,分析其中接受植入器械治疗的患者情况。收集患者的临床资料,包括人口学信息、诊断、心电图、超声心动图、实验室指标、心力衰竭病因、合并症和治疗等。结果 共纳入LVEF≤35%的32 777例患者中接受器械治疗的患者3 646例(11.1%),其中植入心律转复除颤器(ICD)治疗1 494例,占全部病例的4.6%,植入心脏再同步化治疗起搏器(CRT-P)治疗642例,占全部病例的2.0%,植入CRT-D治疗1 510例,占全部病例的4.6%。心力衰竭的病因依次为扩张型心肌病[57.1%(1 881/3 297)]、冠心病[30.5%(1 007/3 297)]、高血压[7.5%(248/3 297)]及瓣膜性心脏病[4.3%(143/3 297)]。合并的心脑血管疾病主要为心房颤动/心房扑动[31.9%(1 163/3 646)]、卒中/一过性脑缺血发作[9.6%(348/3 536)]。合并的非心脑血管疾病的比例由高到低依次为糖尿病[28.7%(1 039/3 625)]、贫血[27.7%(973/3 520)]、慢性肾脏病[14.2%(518/3 640)]、低钠血症[9.0%(317/3 522)]、恶性肿瘤[2.2%(81/3 631)]。植入器械的心力衰竭患者在住院治疗期间,襻利尿剂的使用率为87.2%(3 163/3 627),静脉正性肌力药物的使用率为10.4%(378/3 640)。出院时,血管紧张素转化酶抑制剂(ACEI)使用率为31.5%(1 149/3 646),血管紧张素Ⅱ受体阻滞剂(ARB)使用率为23.9%(871/3 646),血管紧张素受体脑啡肽酶抑制剂(ARNI)使用率为29.5%(1 076/3 646)、B受体阻滞剂使用率为90.3%(3 239/3 642),醛固酮受体拮抗剂使用率为84.8%(3 087/3 642)。结论 我国心力衰竭患者的治疗现状仍以药物治疗为主,器械治疗的植入率偏低,与国内外指南推荐的差距仍较大;在接受植入器械治疗的心力衰竭患者中,大部分患者同时都应用了指南推荐的药物治疗,依从性较好。 展开更多
关键词 心力衰竭 流行病学 器械治疗 药物治疗
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超声引导下隐神经脉冲射频治疗膝骨关节炎的临床研究
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作者 王欢 聂会勇 +2 位作者 王辉 王诗雨 王锁良 《西安交通大学学报(医学版)》 CAS CSCD 北大核心 2024年第5期809-814,共6页
目的研究超声引导下隐神经脉冲射频(PRF)治疗膝骨性关节炎(KOA)的疗效及安全性。方法自2021年3月到2023年10月随访KOA患者289例,按照不同治疗方法分为PRF组(A组,n=142)和保守治疗组(B组,n=147),记录两组治疗前和治疗后1周、1个月、3个月... 目的研究超声引导下隐神经脉冲射频(PRF)治疗膝骨性关节炎(KOA)的疗效及安全性。方法自2021年3月到2023年10月随访KOA患者289例,按照不同治疗方法分为PRF组(A组,n=142)和保守治疗组(B组,n=147),记录两组治疗前和治疗后1周、1个月、3个月、6个月疼痛程度(VAS)、膝关节功能(OKS)和睡眠质量(AIS),并记录并发症的发生情况,进行组间比较。结果两组在治疗后,VAS、OKS、AIS评分均较治疗前下降(P<0.001)。且A组评分在术后6个月内均呈现逐渐下降趋势,而B组评分6个月内整体呈现上升趋势。A组的VAS、OKS评分从术后1周到6个月均显著低于B组(P<0.001);A组AIS评分从术后1月到术后6个月远小于B组(P<0.001)。两组间并发症的发生率无统计学差异(P=0.236)。结论超声引导下隐神经PRF术可以更好地降低KOA患者的疼痛、提高膝关节活动能力及改善睡眠,效果优于保守治疗。 展开更多
关键词 膝骨性关节炎(KOA) 介入治疗 脉冲射频(PRF) 隐神经 超声引导
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超声诊断仪联合内脏脂肪检测仪在非酒精性脂肪肝中的诊断价值
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作者 陈亮 潘佰灵 +1 位作者 徐丽伟 徐婷 《医疗装备》 2024年第1期22-24,共3页
目的探讨超声诊断仪联合内脏脂肪检测仪在非酒精性脂肪肝诊断中的价值。方法选取2022年1月至2023年1月医院收治的60例非酒精性脂肪肝患者为观察组,同期选取60名健康体检者为对照组,入选对象均行超声诊断仪及内脏脂肪检测仪检查,采用受... 目的探讨超声诊断仪联合内脏脂肪检测仪在非酒精性脂肪肝诊断中的价值。方法选取2022年1月至2023年1月医院收治的60例非酒精性脂肪肝患者为观察组,同期选取60名健康体检者为对照组,入选对象均行超声诊断仪及内脏脂肪检测仪检查,采用受试者特征(ROC)曲线评估超声诊断仪和内脏脂肪检测仪在非酒精性脂肪肝诊断中的价值。结果观察组内脏脂肪面积、观察组CAP值明显高于对照组,差异有统计学意义(P<0.05)。超声诊断仪和内脏脂肪检测仪两种检查方式检测的曲线下面积(AUC)分别为0.825、0.849,灵敏度分别为0.737、0.875,特异度分别为0.766、0.823。联合检测的AUC、灵敏度及特异度分别为0.926、0.913及0.853。结论超声诊断仪联合内脏脂肪检测仪用于非酒精性脂肪检测的灵敏度和特异度均显著高于单独检测,提高了非酒精性脂肪肝的诊断效能,具有较高的诊断价值。 展开更多
关键词 超声诊断仪 内脏脂肪检测仪 非酒精性脂肪肝
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一种用于尿道瘢痕防治动物实验的超声探头设计
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作者 刘畅 王欣钰 +2 位作者 郑其斌 王春辉 郑政 《北京生物医学工程》 2024年第4期370-376,共7页
目的 尿道瘢痕是患者尿道手术后常见的并发症之一,并且难以通过手术治疗方法清除。低强度脉冲超声(low intensity pulse ultrasound,LIPUS)在抑制纤维化,抑制炎症方面有十分突出的表现,为超声防治尿道瘢痕提供了理论的可能性。尽管如此... 目的 尿道瘢痕是患者尿道手术后常见的并发症之一,并且难以通过手术治疗方法清除。低强度脉冲超声(low intensity pulse ultrasound,LIPUS)在抑制纤维化,抑制炎症方面有十分突出的表现,为超声防治尿道瘢痕提供了理论的可能性。尽管如此,目前并没有对超声用于尿道瘢痕的防治作用的报道,另外有关超声抑制纤维化、抑制炎症的作用机制也仍需要进一步的研究。本文针对新西兰雄兔尿道重建模型设计了一种超声探头,用于LIPUS抑制尿道瘢痕疗效和作用机制的动物实验研究。方法 根据兔阴茎的尺寸与形状设计探头结构,通过有限元仿真预测探头声场,用3D打印技术制造原型机。最后对探头声场进行测试,并且用于动物实验验证其实用性。结果 探头超声频率为2 MHz,治疗腔长度44 mm,直径8 mm。治疗腔沿长度方向上有3个紧邻的治疗区,每个治疗区的半功率长度约6 mm,治疗区内的I_(sata)(时间平均空间平均声强)可通过前端驱动器电源电压进行调节,当电源电压为30 V时,I_(sata)大于0.87 W/cm^(2)。结论 本文设计的超声探头体积小、重量轻、声场均匀,可以对动物尿道实施稳定有效的超声照射,为超声治疗尿道瘢痕动物实验提供了一种有用的工具。 展开更多
关键词 低强度脉冲超声 尿道瘢痕 超声探头 超声治疗 有限元仿真
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推拿和器具辅助松解治疗肱骨外上髁炎的疗效比较
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作者 刘洋 吴廉卿 《中国组织工程研究》 CAS 北大核心 2024年第26期4226-4233,共8页
背景:器械辅助软组织松解作为一种非入侵性的治疗方法常被应用于软组织(骨骼肌、韧带、筋膜)损伤及术后恢复,可改善关节活动范围内的疼痛并提升力量。目的:比较器具辅助软组织松解与推拿治疗肱骨外上髁炎的临床疗效。方法:纳入武汉体育... 背景:器械辅助软组织松解作为一种非入侵性的治疗方法常被应用于软组织(骨骼肌、韧带、筋膜)损伤及术后恢复,可改善关节活动范围内的疼痛并提升力量。目的:比较器具辅助软组织松解与推拿治疗肱骨外上髁炎的临床疗效。方法:纳入武汉体育学院学生中肱骨外上髁炎患者25例,采用随机数字表法分为试验组(n=13)与对照组(n=12),分别接受器具辅助软组织松解与推拿治疗,每周干预2次,连续干预4周。治疗前后进行肘关节目测类比评分、Mayo肘关节功能评分、手臂握力及关节运动范围评估。结果与结论:①两组患者首次治疗与末次治疗后的肘关节目测类比评分均明显低于治疗前(P<0.05),两组间肘关节目测类比评分比较差异无显著性意义(P>0.05);两组患者首次治疗与末次治疗后的Mayo肘关节功能评分均高于治疗前(P<0.05),两组间Mayo肘关节功能评分比较差异均无显著性意义(P>0.05);②试验组患者末次治疗后的垂臂最大握力、内旋最大握力与外旋最大握力均大于治疗前(P<0.05),对照组末次治疗后的内旋最大握力大于治疗前(P<0.05),两组间3种握力比较差异无显著性意义(P>0.05);③两组患者首次治疗与末次治疗后的前臂抗阻内旋角度、前臂抗阻外旋角度、静息状态下的肘关节角度及抗阻伸肘最大角度均大于治疗前(P<0.05),抗阻屈肘最大角度均小于治疗前(P<0.05),两组间各角度比较差异均无显著性意义(P>0.05);④两组患者首次治疗与末次治疗后的前臂运动范围、肘关节运动范围均大于治疗前(P<0.05),两组间前臂运动范围、肘关节运动范围比较差异无显著性意义(P>0.05);⑤结果表明,器具辅助软组织松解与推拿都可以明显降低肱骨外上髁炎患者的疼痛、改善肘关节柔韧性、增加关节运动范围,其中器具辅助软组织松解对最大握力的改善效果优于推拿治疗。 展开更多
关键词 肱骨外上髁炎 器械辅助软组织松解术 推拿 肌筋膜 筋膜致密化 物理治疗
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气压治疗仪护理模式对重症医学科患者深静脉血栓形成的预防作用
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作者 尚艳 许湘华 《当代医学》 2024年第13期160-163,共4页
目的探讨气压治疗仪护理模式对重症医学科患者深静脉血栓形成的预防效果。方法选取2019年7月至2021年11月常州市第三人民医院重症医学科收治的98例患者作为研究对象,按随机数字表法分为两组,每组49例。对照组采取常规护理,观察组在常规... 目的探讨气压治疗仪护理模式对重症医学科患者深静脉血栓形成的预防效果。方法选取2019年7月至2021年11月常州市第三人民医院重症医学科收治的98例患者作为研究对象,按随机数字表法分为两组,每组49例。对照组采取常规护理,观察组在常规护理基础上采取气压治疗仪护理模式,比较两组凝血指标、静脉血流速度、深静脉血栓形成风险及深静脉血栓发生率。结果护理后,观察组血浆纤维蛋白原(Fg)、D二聚体(D-D)水平均低于对照组,血浆活化部分凝血酶时间(APTT)、血浆凝血酶原时间(PT)水平均长于对照组,差异有统计学意义(P<0.05);护理后,观察组胫后静脉、腘静脉、股深静脉的血流速度均快于对照组,差异有统计学意义(P<0.05);护理后7 d,观察组静脉血栓形成危险度评分量表(RAPT)风险分级低于对照组,差异有统计学意义(P<0.05);观察组深静脉血栓发生率为4.08%,低于对照组的16.33%,差异有统计学意义(P<0.05)。结论气压治疗仪护理模式应用于重症医学科患者中,可有效改善其凝血指标,减缓下肢静脉血流速度,降低深静脉血栓形成风险,从而有效预防深静脉血栓形成。 展开更多
关键词 气压治疗仪 护理 重症医学科 深静脉血栓 预防
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中药湿热敷联合超声药物透入改善阳虚水泛型心力衰竭患者疲乏症状的疗效观察
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作者 徐萍 徐洪燕 《浙江临床医学》 2024年第7期1072-1074,共3页
目的 观察中药湿热敷联合超声药物透入改善阳虚水泛型心力衰竭患者疲乏的疗效。方法 选择2022年1月至2023年6月阳虚水泛型心力衰竭患者60例。按照随机数字表法分为观察组与对照组各30例。对照组采用常规治疗,观察组在此基础上予中药湿... 目的 观察中药湿热敷联合超声药物透入改善阳虚水泛型心力衰竭患者疲乏的疗效。方法 选择2022年1月至2023年6月阳虚水泛型心力衰竭患者60例。按照随机数字表法分为观察组与对照组各30例。对照组采用常规治疗,观察组在此基础上予中药湿热敷联合超声药物透入治疗,共治疗7 d。结果 治疗后,观察组总有效率(93.33%)高于对照组(70.33%),差异有统计学意义(P<0.05);观察组疲乏中医证候评分、简短疲乏量表评分低于对照组,日常活动能力评分高于对照组,差异均有统计学意义(P<0.05)。结论 中药湿热敷联合超声药物透入能缓解心力衰竭患者疲乏症状,提高患者的日常活动能力。 展开更多
关键词 中药湿热敷 超声药物透入 心力衰竭 疲乏
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精准温度控制半导体激光治疗仪及其可靠性分析
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作者 戴丽 张旺 +1 位作者 温易宸 赵俊 《中国医疗设备》 2024年第9期28-34,共7页
目的探究影响基于保偏光纤温度传感器的半导体激光治疗仪功率稳定输出的关键因素,探索实用化的激光治疗系统光电子器件可靠性分析方法。方法基于可靠性框图法,对系统光电子器件及其外围电路建立可靠度(RSL)、失效率(λSL)和平均寿命(LSL... 目的探究影响基于保偏光纤温度传感器的半导体激光治疗仪功率稳定输出的关键因素,探索实用化的激光治疗系统光电子器件可靠性分析方法。方法基于可靠性框图法,对系统光电子器件及其外围电路建立可靠度(RSL)、失效率(λSL)和平均寿命(LSL)分析模型,分析使用环境、运行时间(t)和工作温度(T)对系统运行可靠性的影响。基于加速寿命模型分别在室温大驱动电流(T=25℃、I=2.5 A)、高温工作电流(T=50℃、I=1.5 A)和高温大驱动电流(T=50℃、I=2.5 A)条件下,测试LSL与T、I以及T和I相互作用条件下的关系。结果仿真结果表明,λSL随T的增加而增加,LSL随T的增加而降低,RSL随T和t的增加而降低,在I为1.5 A、T为50℃的条件下,λSL、LSL、RSL估计值分别为5.229×10-51/h、17824.500 h、0.11418。实验结果显示,LSL分别为22873、17693和4780 h,实验测试结果与仿真结果吻合。结论基于本研究所提方法,可结合系统架构、设计方法、使用环境,分析计算出设备的λSL是否满足使用规范,进而预测出设备的RSL与LSL,为设计制造与临床使用提供数据支撑。 展开更多
关键词 半导体激光治疗仪 光纤温度传感器 可靠性框图 加速寿命实验 可靠性
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下肢骨折深静脉血栓防治的研究进展 被引量:1
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作者 郑楚荣 古鹏 +4 位作者 吴文正 谭能贤 罗列良 欧阳崇志 郑晓辉 《广州中医药大学学报》 CAS 2024年第6期1647-1652,共6页
深静脉血栓形成(deep vein thrombosis,DVT)是下肢骨折术后的常见并发症,具有高发病率、高致残率、高死亡率等特点。目前临床上防治下肢骨折术后深静脉血栓的措施主要包括围手术期护理、医疗辅助器械干预、西药干预、中医干预、患者自... 深静脉血栓形成(deep vein thrombosis,DVT)是下肢骨折术后的常见并发症,具有高发病率、高致残率、高死亡率等特点。目前临床上防治下肢骨折术后深静脉血栓的措施主要包括围手术期护理、医疗辅助器械干预、西药干预、中医干预、患者自身配合等。患者自身配合是一切防治方法顺利实施的基础,患者的积极合作是实现防治作用的前提。围手术期护理有助于患者了解术后DVT的危险因素及DVT发生后可能引起的危险性,指导患者饮食的选择,协助患者术后活动,进而改善患者血液流变学指标水平,减少术后DVT的发生。医疗器械可协助患者进行术后康复锻炼,改善血液动力学水平,促进患者康复及减少术后DVT的发生。西药如低分子肝素、利伐沙班、依诺肝素等抗凝药物可降低凝血因子的聚集及血液黏稠度,减少术后DVT的发生。中医干预主要包括中药内服及外治法如针灸、推拿等。中药内服可改善血流状态;针灸、推拿可调动脏腑功能,激发机体的正气而改善机体气血情况。各项防治措施都有其优缺点,临证运用时需结合具体条件及患者个体状况而选择合理的防治方式。中医干预DVT可在下肢骨折患者的术前及术后执行,且具有费用低、效果确切等特点,值得不断挖掘及传承创新。 展开更多
关键词 下肢骨折 深静脉血栓形成 防治措施 围手术期护理 医疗辅助器械干预 药物疗法 中医疗法
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