首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   40篇
  免费   7篇
  国内免费   1篇
基础医学   3篇
临床医学   2篇
内科学   4篇
神经病学   1篇
特种医学   27篇
外科学   5篇
综合类   4篇
预防医学   1篇
中国医学   1篇
  2022年   2篇
  2021年   4篇
  2020年   3篇
  2019年   3篇
  2018年   1篇
  2017年   3篇
  2016年   3篇
  2015年   4篇
  2013年   6篇
  2012年   4篇
  2011年   6篇
  2010年   4篇
  2009年   1篇
  2008年   1篇
  2005年   1篇
  1998年   1篇
  1986年   1篇
排序方式: 共有48条查询结果,搜索用时 31 毫秒
1.
Our relationship to time is both a developmental and a relational one; an inter- and intra-psychic experience. Exploring how the theories of Freud, Klein, Winnicott, and their successors offer explanations of how the psychoanalytic subject develops and sustains a concept of time and the factors that may hinder this, this essay suggests that different qualities of time, such as continuity, rhythm, repetition and interruption, can reveal themselves through the client's transferential and countertransferential relationship with the therapist. Using fictionalized clinical examples it explores how a bodily felt experience of time was thought about by the therapist/author using Laban movement analysis to support a client in ‘working through’ early material that felt stuck. The exploration of a client's perspective is brought in through the writings of the activist Passerini on her psychoanalytic treatment (cited by Baraitser in Enduring Time) and her experience of trauma's capacity to stop time. The essay also looks at how psychoanalytic ideas of temporality challenge the ‘recruiting’ of time by the wider culture to create more time-efficient late-capitalist subjects but by using ideas from movement studies and a Lacanian influenced time register it is suggested that cultural attacks on subjective experiences of temporality could be challenged within therapy. It is hoped the essay encourages the therapist to become alert to the manifestations of different temporal experiences within the therapeutic relationship and to develop a creative, embodied language with which to explore it with the client.  相似文献   
2.
3.
《Brachytherapy》2020,19(4):484-490
PurposeThe purpose of this study was to compare an isotropic three-dimensional (3D) T2-weighted sequence sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) with an axial two-dimensional T2-weighted turbo spin echo (TSE) sequence with regard to overall image quality and the delineation of normal prostate and periprostatic anatomy for low-dose-rate prostate cancer brachytherapy planning evaluation.Methods and MaterialsPatients (n = 69) with prostate cancer who had pelvic magnetic resonance imaging (MRI) for low-dose-rate brachytherapy treatment planning were included. Three radiologists independently assessed the visibility of nine anatomic structures on each sequence by using a 5-point scale and overall image quality by using a 4-point scale. The significance of the differences in diagnostic performance was tested with a Wilcoxon signed rank test.ResultsNo significant intersequence differences were found for most (7/9) anatomical structures and overall image quality. The mean scores for visibility of anatomical structures on the 3D SPACE and 2D TSE sequences, respectively, were as follows: the zonal anatomy (3.7; 3.9, p = 0.05), prostate capsule (3.9; 4.0, p = 0.08), neurovascular bundle (2.9; 2.9, p = 0.9), rectoprostatic angle (3.8; 3.8, p = 0.35), rectum (4.2; 4.3, p = 0.26), urethra (3.8; 3.9, p = 0.12), urinary bladder (4.6; 4.6, p = 0.61), and overall image quality (2.9; 2.9, p = 0.33). 3D SPACE was superior for delineation of the genitourinary diaphragm (3.8; 3.6, p = 0.003), whereas 2D TSE was superior for delineation of the seminal vesicles (3.5; 4.0, p < 0.0001).ConclusionsAnatomic delineation of the prostatic and periprostatic anatomy provided by the 3D SPACE sequence is as robust in quality as that provided by a conventional 2D TSE sequence with superior delineation of the genitourinary diaphragm. For MRI-based brachytherapy treatment planning, the 3D SPACE sequence with subcentimeter isotropic resolution can replace the 2D TSE sequence and be incorporated into standard MRI protocols.  相似文献   
4.
Background: The causal relationship between obesity and osteoarthritis (OA) of the knee is generally accepted. Weight loss has been shown to reduce the development of OA and improve the radiological parameters of existing disease. However, inducing weight reduction is difficult, and thus the number of patients studied has been small. We wished to determine the effects of surgically-induced weight loss on objective, radiological evidence of OA in the knee joint. Methods: 64 consecutive patients that were referred to the Bariatric Surgical Unit were enrolled in the study. The only exclusion criterion was the prior diagnosis of OA. Knee pain alone did not exclude patients from the study. The study was performed in a prospective manner as a before-after trial. Radiographic data was evaluated by an independent radiologist not involved in the patient care or follow-up. Upright film of the knee was taken prior to surgery and 3 months following surgery. Minimal medial joint space width (JSW) was measured by a digital image computer. In addition, patients were clinically assessed using the American Knee Society Score (AKSS) at these times. Results: 59 of 64 patients were available for followup. BMI decreased from 43.4 to 36.9 (P<0.01). The medial joint space increased from 4.6 mm to 5.25 mm (P<0.001). The AKSS improved from 78.5 points (perfect function = 100 points) to 90.69 points (P<0.01). Conclusion: Surgically-induced weight loss is an effective, rapid and dependable means of reversing the radiological signs of early changes associated with OA.  相似文献   
5.
目的 验证三维多回波数据联合成像 (three dimensional multi-echo data imagine combination with selective water excitation, 3D MEDIC WE)和三维快速自旋回波成像 (three dimensional sampling perfection with application optimized contrasts by using different flip angle evolution, 3D SPACE STIR) 序列在腰骶丛神经根成像中的可行性和重复性。方法 将55例受试者分为腰椎无异常表现的正常对照组(20例)、单纯性腰椎间盘突出症(lumbar disc herniation, LDH)组(20例)和慢性炎性脱髓鞘性多发性神经根神经病症(chronic inflammatory demyelinating polyradiculoneuropathy, CIDP)组(15例),分别应用两种腰骶丛神经根成像,评价图像质量参数信噪比(signal to noise ratio,SNR)、对比噪声比(contrast to noise ratio,CNR)和对比度(contrast ratio,CR),并验证正常对照组、CIDP组和LDH组测量神经根直径的一致性。结果 两序列测得神经根直径的一致性较高(正常组r=0.95,CIDP组r=0.99,LDH组r=0.97,P<0.001),图像质量评价指标显示,3D SPACE STIR序列在SNR、CNR和CR三项指标中占优,3D MEDIC WE定性评估图像质量评分较高。两序列均能清晰显示正常腰骶丛神经根、病变所致的弥漫性形态增粗神经根以及间盘突出受挤压变形的神经根。结论 3D MEDIC WE和3D SPACE STIR序列可应用于腰骶丛神经根成像,两序列对正常和异常形态、走行的神经根评估具备很高的可行性和重复性。综合考量临床图像的定性、定量评价,可择优选择恰当的序列为腰骶丛神经根成像提供影像支持。  相似文献   
6.
7.
针刺与硬膜外腔复合麻醉用于胆囊切除术的临床研究   总被引:14,自引:3,他引:11  
孙大金 《中国针灸》1998,18(8):471-473
81例胆囊切除术分为 3组 : 组针刺与单纯硬膜外低浓度局麻药复合麻醉 ; 组单纯硬膜外低浓度局麻药麻醉 ; 组硬膜外常规浓度局麻药麻醉。临床观察麻醉效果 , 、 组进行同位素放射免疫测定进行比较研究 ,其结果显示针刺与硬膜外复合麻醉既减少麻醉药用量又对机体有调整作用 ,对手术刺激反应具有保护性抑制作用 ,使循环系统更稳定。  相似文献   
8.
The attainment of unit status or I AM is a crucial stage in Winnicott's theory of development and arguably ranks amongst Winnicott's more well known ideas, such as transitional object, true and false self, and primary maternal preoccupation. Using Winnicott's 1968 paper ‘Sum, I am’, the author traces the dangers inherent in attaining I AM and what might hamper this achievement, the personal significance of numbers and divisibility, and how this links with his subsequent ideas on monotheism and a radical revision of Freud's dual drive theory. Returning to the ‘Sum, I am’ paper, the author briefly explores the importance Winnicott places on play in pedagogy and the significance of an intermediate space followed by Winnicott's thoughts about death, dissociation, and the importance of a mouse! Four clinical examples are used to illustrate difficulties in achieving I AM. Finally, the author suggests the spatula game in ‘Observation of infants in a set situation’ published over a quarter of a century earlier is a prime example of an I AM experience, with a beginning, middle and end.  相似文献   
9.
Osteocytes can remove and remodel small amounts of their surrounding bone matrix through osteocytic osteolysis, which results in increased volume occupied by lacunar and canalicular space (LCS). It is well established that cortical bone stiffness and strength are strongly and inversely correlated with vascular porosity, but whether changes in LCS volume caused by osteocytic osteolysis are large enough to affect bone mechanical properties is not known. In the current studies we tested the hypotheses that (1) lactation and postlactation recovery in mice alter the elastic modulus of bone tissue, and (2) such local changes in mechanical properties are related predominantly to alterations in lacunar and canalicular volume rather than bone matrix composition. Mechanical testing was performed using microindentation to measure modulus in regions containing solely osteocytes and no vascular porosity. Lactation caused a significant (~13%) reduction in bone tissue‐level elastic modulus (p < 0.001). After 1 week postweaning (recovery), bone modulus levels returned to control levels and did not change further after 4 weeks of recovery. LCS porosity tracked inversely with changes in cortical bone modulus. Lacunar and canalicular void space increased 7% and 15% with lactation, respectively (p < 0.05), then returned to control levels at 1 week after weaning. Neither bone mineralization (assessed by high‐resolution backscattered scanning electron microscopy) nor mineral/matrix ratio or crystallinity (assessed by Raman microspectroscopy) changed with lactation. Thus, changes in bone mechanical properties induced by lactation and recovery appear to depend predominantly on changes in osteocyte LCS dimensions. Moreover, this study demonstrates that tissue‐level cortical bone mechanical properties are rapidly and reversibly modulated by osteocytes in response to physiological challenge. These data point to a hitherto unappreciated role for osteocytes in modulating and maintaining local bone mechanical properties. © 2016 American Society for Bone and Mineral Research.  相似文献   
10.
This document is the consensus of international experts on the current status of Single Fiber EMG (SFEMG) and the measurement of neuromuscular jitter with concentric needle electrodes (CNE – CN-jitter). The panel of authors was chosen based on their particular interests and previous publications within a specific area of SFEMG or CN-jitter. Each member of the panel was asked to submit a section on their particular area of interest and these submissions were circulated among the panel members for edits and comments. This process continued until a consensus was reached. Donald Sanders and Erik Stålberg then edited the final document.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号