The capsule endoscope swallowed from the mouth into the digestive system can capture the images of important gastrointestinal tract regions. It can compensate for the blind spot of traditional endoscopic techniques. It enables inspection of the digestive system without discomfort or need for sedation. However, currently available clinical capsule endoscope has some limitations such as the diagnostic information being not able to correspond to the orientation in the body, since the doctor is unable to control the capsule motion and orientation. To solve the problem, it is significant to track the position and orientation of the capsule in the human body. This study presents an AC excitation wireless tracking method in the capsule endoscope, and the sensor embedded in the capsule can measure the magnetic field generated by excitation coil. And then the position and orientation of the capsule can be obtained by solving a magnetic field inverse problem. Since the magnetic field decays with distance dramatically, the dynamic range of the received signal spans three orders of magnitude, we designed an adjustable alternating magnetic field generating device. The device can adjust the strength of the alternating magnetic field automatically through the feedback signal from the sensor. The prototype experiment showed that the adjustable magnetic field generating device was feasible. It could realize the automatic adjustment of the magnetic field strength successfully, and improve the tracking accuracy.
本文简介了医疗干预的潜在危害和风险的定义、内涵,以及它对医患双方的意义,以期促进医患交流.
Transcranial electric stimulation (TES) is a non-invasive, economical, and well-tolerated neuromodulation technique. However, traditional TES is a whole-brain stimulation with a small current, which cannot satisfy the need for effectively focused stimulation of deep brain areas in clinical treatment. With the deepening of the clinical application of TES, researchers have constantly investigated new methods for deeper, more intense, and more focused stimulation, especially multi-electrode stimulation represented by high-precision TES and temporal interference stimulation. This paper reviews the stimulation optimization schemes of TES in recent years and further analyzes the characteristics and limitations of existing stimulation methods, aiming to provide a reference for related clinical applications and guide the following research on TES. In addition, this paper proposes the viewpoint of the development direction of TES, especially the direction of optimizing TES for deep brain stimulation, aiming to provide new ideas for subsequent research and application.
Objective To investigate patients in gynecological endocrinology clinic with the following three pieces of information: how did they provide their symptom information, how did they understand diagnostic and therapeutic information, and what was their attitude towards the visit, and to get to know about the situation and problems in doctor-patient communication, so as to aim directly at improving the efficiency of diagnosis and treatment. Methods A total of 403 patients, who visited Prof. HAN Zi-yan’s clinic in the hospital from April to August 2010, were evaluated using self-edited Assessment on Doctor-patient Communication in Gynecological Endocrinology Outpatient Clinic. Results a) As to the situation of patients providing symptom information as well as understanding diagnostic and therapeutic information, when doctor asked, only 29% (118/403) of patients could narrate their treatment history clearly, and 38% (152/403) could tell their examination history exactly. After doctors’ explanation, only 21% (86/403) understood their examination results correctly, and 27% (108/403) understood management and therapeutic advice. The result of correlation analysis showed the accuracy of patients in providing disease information and accepting diagnostic and therapeutic information was higher in patients aged from 21 to 40 rather than those younger than 20, in patients well- educated rather than those with little education at the primary school, and in patients who were also engaged in medical work, All differences were significant (all Plt;0.05); and b) As to patients’ attitude towards visit, 55% (222/403) of patients hoped to get more attention from doctor, and 37.5% (151/403) overly expected the visit. Conclusion In the professor’s gynecological endocrinology outpatient clinic, many patients can’t clearly provide their treatment and examination history, neither understand exam situation and therapeutic advice at that visit, which are influenced by their age, education and occupation. In addition, psychological needs of patients should be concerned, too
通过分析护理研究生在我院近5年撰写的科研项目申报书、中标与参与课题研究、在国内外学术期刊论文的发表、协助指导论文和参与国内外学术交流活动的情况,从而探讨护理研究生在医院临床科研工作中的角色和作用。
Lung cancer management is complex and requires a multi-disciplinary approach to provide comprehensive care. Interventional pulmonology (IP) is an evolving field that utilizes minimally invasive modalities for the initial diagnosis and staging of suspected lung cancers. Endobronchial ultrasound guided sampling of mediastinal lymph nodes for staging and detection of driver mutations is instrumental for prognosis and treatment of early and later stage lung cancers. Advances in navigational bronchoscopy allow for histological sampling of suspicious peripheral lesions with minimal complication rates, as well as assisting with fiducial marker placements for stereotactic radiation therapy. Furthermore, IP can also offer palliation for inoperable cancers and those with late stage diseases. As the trend towards early lung cancer detection with low dose computed tomography is developing, it is paramount for the pulmonary physician with expertise in lung nodule management, minimally invasive sampling and staging to integrate into the paradigm of multi-specialty care.