1.The structure and technical research of medical information interaction and sharing among regions.
Fangjie DONG ; Lixin PU ; Jianming QU ; Jianping HU
Journal of Biomedical Engineering 2014;31(4):788-792
The hospital information structure, which is made up of various medical business systems, is suffering from the problems of the "information isolated island". Medical business systems in the hospital are mutually isomerous and difficult to become a whole. How to realize the internal barrier-free interaction of the patients effective medical information in the hospital and further to complete the area sharing of patients longitudinal diagnosis and treatment information has become a question having to be solved urgently in the process of healthcare informatization. Based on the HL7 standard, this paper refers to the IHE technical framework, expounds the overall structure of the interaction in the hospital internal and area sharing of medical information with the medical information exchange platform. The paper also gives the details of the whole process of the complete display of the discrete patient health information using Portal technology, which is saved in the business systems in different hospitals. It interacts internally through the information exchange platform and at last stores the information in the regional clinical data repository (CDR).
Humans
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Information Dissemination
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methods
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Medical Informatics
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organization & administration
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Medical Record Linkage
2.Automatic segmentation of clustered breast cancer cells based on modified watershed algorithm and concavity points searching.
Zhen TONG ; Lixin PU ; Fangjie DONG
Journal of Biomedical Engineering 2013;30(4):692-696
As a common malignant tumor, breast cancer has seriously affected women's physical and psychological health even threatened their lives. Breast cancer has even begun to show a gradual trend of high incidence in some places in the world. As a kind of common pathological assist diagnosis technique, immunohistochemical technique plays an important role in the diagnosis of breast cancer. Usually, Pathologists isolate positive cells from the stained specimen which were processed by immunohistochemical technique and calculate the ratio of positive cells which is a core indicator of breast cancer in diagnosis. In this paper, we present a new algorithm which was based on modified watershed algorithm and concavity points searching to identify the positive cells and segment the clustered cells automatically, and then realize automatic counting. By comparison of the results of our experiments with those of other methods, our method can exactly segment the clustered cells without losing any geometrical cell features and give the exact number of separating cells.
Algorithms
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Breast Neoplasms
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pathology
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Cell Separation
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Epithelial Cells
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chemistry
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pathology
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Female
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Humans
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Image Processing, Computer-Assisted
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Immunohistochemistry
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methods
3.Research on DICOM SR.
Journal of Biomedical Engineering 2011;28(1):45-48
This paper is aimed to research into the information model of the Digital Imaging and Communication in Medicine (DICOM) Structured Reporting (SR), and to introduce DICOM information object definitions (IODs) and services used for the storage and transmission of SR. The DICOM services are concerned with storage, query, retrieval, and transfer of data, and give a brief introduction to DICOM DIR. DICOM DIR is a file based on medical information. According to the DICOM DIR definition in the DICOM part ten, it may be found that the composite objects referenced in the DICOM SR. So putting forward the management of DICOM files by DICOM DIR sets, It effectively improves the efficiency of the object referenced by SR. This can increase the ability to access the data. For scientific research, medical data mining and applications, DICOM SR can profit the communication of medical information in different hospitals, and this can be useful for the analysis, research, summary, classification and extraction of a large quantity of medical information.
Computer Communication Networks
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Humans
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Information Storage and Retrieval
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methods
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standards
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Medical Records Systems, Computerized
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standards
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Radiographic Image Enhancement
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methods
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Radiology Information Systems
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organization & administration
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User-Computer Interface
4.Modified transperitoneal laparoscopic radical prostatectomy : clinical study of 285 cases
Pu LI ; Changjun YIN ; Pengfei SHAO ; Chao QIN ; Xiaoxin MENG ; Xiaobing JU ; Jie LI ; Qiang LV ; Lixin HUA ; Zengjun WANG ; Min GU ; Zhengquan XU
Chinese Journal of Urology 2012;33(10):749-752
Objective To evaluate the technique and clinical outcomes of modified transperitoneal laparoscopic radical prostatectomy. Methods A total of 285 patients received the operation with mean age of 67 years (50-76 years) from January 2008 to April 2012.Mean level of PSA was 15.7 μg/L (1.8 -50.0 μg/L),and mean prostatic volume was 44 ml (26 -74 ml). No lymph node or seminal vesicle involvement was found by CT or MR and radionuclide bone scan revealed no metastasis.271 cases were confirmed diagnosis by prostatic biopsy and 14 were detected through pathological studies of TURP specimens.Gleason score ranged from 6 to 8.14 cases were in clinical stage T1b,29 cases in T1c,214 cases in T2 and 28 cases in T3a.Transperitoneal approach and modified technique involving bladder neck dissection,nervesparing technique and vesicoureteral anastomosis were applied on patients. Results Mean operative time was 105 min (55 -150 min).Mean intraoperative estimated blood loss was 240 ml (50-800 ml).Rectal injures occurred in 2 cases and were repaired under laparoscopy.Drainage tube and urinary catheter were removed 48 -72 h and 5 -8 d postoperatively.Postoperative hospital stay was 7 d (5 - 11 d).Positive surgical margin was present in 58 patients.Mean follow-up time was 29 months (3 -50 months).Complete continence were found in 208 patients immediately after catheter removal.68 patient recovered continence within 3 months and 9 patients remained incontinence 3 months after surgery. Normal erection presented in 42 of the 57 cases with nerve-sparing. Conclusions Transperitoneal laparoscopic radical prostatectomy is safe and efficient.Higher efficiency and lower complication rate have been achieved through modified laparoscopic technique involving bladder neck dissection,nerve-sparing technique and vesicoureteral anastomosis.
5.A telemedical consultation system based on multicast.
Ke LI ; Dezhong YAO ; Lixin PU
Journal of Biomedical Engineering 2003;20(2):237-244
That the multicast technology is fit for telemedical consultation application has been developed on the basis of the features analysis of medical consultation action. A scheme of the telemedical consultation application based on the multicast technology has been designed. The features of this scheme are: unrestrained joining in and quitting, simultaneous control over the transport information of doctor and patient, extending, and simulating consultation scene. And the implementation of this scheme is discussed.
Computer Communication Networks
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Remote Consultation
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methods
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Software
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Systems Analysis
6.Clinical outcomes of laparoscopic radical prostatectomy for high risk prostate cancer.
Pengfei SHAO ; Changjun YIN ; Email: CHANGJUNYIN@HOTMAIL.COM. ; Jie LI ; Pu LI ; Xiaobing JU ; Qiang LYU ; Xiaoxin MENG ; Lixin HUA
Chinese Journal of Surgery 2015;53(11):847-851
OBJECTIVETo study the technique and clinical outcomes of laparoscopic radical prostatectomy for high risk prostate cancer.
METHODSA total of 65 patients with high risk prostate cancer were treated with surgery in the First Affiliated Hospital of Nanjing Medical University from January 2011 to June 2013. The mean age was 67 years (range 45-75 years). The mean preoperative prostate specific antigen (PSA) level was 26.7 µg/L (range 11.2-65.5 µg/L). The transrectal biopsy revealed Gleason score of 3+3 in 4 patients, Gleason 3+4 in 27 patients, Gleason 4+3 in 11 patients, Gleason 4+4 in 21 patients and Gleason 4+5 in 2 patients. The bone metastasis was excluded by scintigraphy examination. The surgical procedures were performed through transperitoneal approach. Extended pelvic lymph nodes dissection was performed after the removal of the prostate. Adjuvant radiotherapy or hormonal therapy was administrated according to the pathological results. Serum PSA was detected every 1 to 2 month and urinary continence was evaluated every 3 month in the first year, and then serum PSA was detected every 2 to 3 month.
RESULTSThe mean operative time was (134±21) minutes and the median blood loss was (300±146) ml. Bladder neck reconstruction was performed in 15 cases. The drainage was removed on postoperative day 4 and the catheter was removed on day 7. Pathologic results demonstrated pT2 in 25 patients, pT3a in 28 patients, pT3b in 9 patients and pT4 in 3 patients. Positive surgical margin was presented in 15 patients. A median of 19 lymph nodes (range 11-24 nodes) were retrieved during lymphadenectomy and 11 patients had lymph nodes metastasis with a total of 19 positive nodes. Forty-three patients recovered continence after the removal of catheter. Eleven patients received adjuvant hormonal therapy and 19 patients received adjuvant radiation therapy. With the median of 20 months follow-up (range 12-30 months), 5 patients got biochemical recurrence.
CONCLUSIONSLaparoscopic radical prostatectomy with extended lymph nodes dissection for high risk prostate cancer is safe and technical feasible. It provides accurate information on tumor stage and grade. It is an important component of multimodality for the treatment of high risk prostate cancer.
Aged ; Biopsy ; Humans ; Laparoscopy ; Lymph Node Excision ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Grading ; Postoperative Period ; Prostate-Specific Antigen ; blood ; Prostatectomy ; Prostatic Neoplasms ; diagnosis ; surgery
7.Research and application of orthotopic DR chest radiograph quality control system based on artificial intelligence.
Jiyuan WANG ; Zhenlin LI ; Lixin PU ; Kai ZHANG ; Xiumin LIU ; Bin ZHOU
Journal of Biomedical Engineering 2020;37(1):158-168
With the change of medical diagnosis and treatment mode, the quality of medical image directly affects the diagnosis and treatment of the disease for doctors. Therefore, realization of intelligent image quality control by computer will have a greater auxiliary effect on the radiographer's filming work. In this paper, the research methods and applications of image segmentation model and image classification model in the field of deep learning and traditional image processing algorithm applied to medical image quality evaluation are described. The results demonstrate that deep learning algorithm is more accurate and efficient than the traditional image processing algorithm in the effective training of medical image big data, which explains the broad application prospect of deep learning in the medical field. This paper developed a set of intelligent quality control system for auxiliary filming, and successfully applied it to the Radiology Department of West China Hospital and other city and county hospitals, which effectively verified the feasibility and stability of the quality control system.