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Objective Tofacilitatetheradiologiststoinquireinformationrelatedtobreastdiseasesandimprovetheefficiencyand accuracyofsearchingdata.Methods Inthispaper,amultilevelstrategyhybridquestion-and-answermodelwasusedtodesignanautomatic question-and-answersysteminthefieldofbreastdiseasesimaging.Thefirstlayerofthismodelwasthequick matchingofquestion sentencesandFAQknowledgebase.Thesecondlayerwastoobtaintheanswersinthebasicknowledgebaseaccordingtothethresholdsetby processingthequestionsandcalculatingthesimilarityofthequestions.Thethirdlayerwastoacquiretheanswerparagraphfromthe webdocumentreturnedbythefull-textsearchengine.Results Thetestresultsshowedthattheaccuracyofthesystemansweracquisitionreached 85%.Thesystemcouldgivesatisfactoryanswerstotheproblemsexistingintheknowledgebase.Conclusion Theintelligentquestion answeringsystemforbreastdiseaseisconvenientandfast,anditisaneffectivetoolforradiologiststoinquiretheknowledgeofbreast diseases.
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Objective To explore the radiological features of intracerebroventricular central neurocytoma and so as to improve the diagnosis of this disease. Methods Thirty patients with pathologically confirmed intra-cerebroventricular central neurocytoma in Nanfang Hospital in past 7 years were analyzed retrospectively for their clinical,radiological and pathological features combined with literatures review. Results Lesions of central neuro-cytoma located at the Monro's foramen areas,the anterior horns and bodies of lateral ventricles.Twenty eight of the patients underwent MRI(with 4 patients received MRS)and 11 patients underwent CT.All cases revealed unilateral or bilateral hydrocephalus of the lateral ventricles and ventriculomegaly.Plain CT revealed heterogeneous isodensity or slighly high density lesions with multiple cystic degeneration,necrosis and calcification while a few lesions(4 le-sions)showed hemorrhage.Heterogeneous isointense or mild hypointense were demonstrated on T1-weight MRI and heterogeneous isointense or slightly hyperintense on T2-weight MRI.Multiple cystic degeneration(always showed as distinctive "soap bubble sign"), necrosis and calcification could also be found within the tumor. The solid compo-nent of tumor revealed slightly high to high signal intensity on DWI while the cystic and necrosis components showed low signal intensity.Most of the tumors showed mild to moderate enhancement with vessels passing through on contrast scan. All cases with 1H MRS showed with obviously increased in Cho peak and decreased in Cr and NAA peaks.In immunohistochemical assay,most of the tumors revealed positive expressions of Neu-N,Synaptophy-sin, GFAP and hypo-level Ki-67. Conclusions The intracerebroventricular central neurocytoma has some typical imaging manifestations.Comprehensive analysis of CT and MRI can be conducive to preoperative diagnosis and dif-ferential diagnosis with other tumors in the lateral ventricle.
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Objective To present a medical image transmission scheme based on fast healthcare interoperability resources(FHIR) proxy gateway which can enable medical personnel to access the hospital's medical imaging system via the Internet using mobile terminals,and then raise the medical staffs' working efficiency.Methods RESTful WebServices as the interoperability mechanism of image data was used in combination with FHIR image resource model and construct an intermediate gateway to three-tier network architecture,in order to solve the problem of transmitting image data to mobile terminals through gateway via the hospital's network.Results During its half-year trial run,the Internet mobile terminal reading system based on this method ran stably and was in good condition,in the actual hospital environment.Conclusion The gateway method is simple,flexible,and can fully support the mobile terminals' access to the background image data center.
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Objective To explore the CT findings of gistric schwannoma and analyze the misdiagnosis causes to improve the diagnosis accuracy of the disease. Methods The findings of CT imaging in 15 cases with pathologically proved gistric schwannoma were reviewed restrospectively ,and relevant literatures were reviewed. Results In those 15 cases,3 were men,12 were women,the oldest was 61,the youngest was 33,and the medi-an age was 53.10 cases were located in the greater curvature side of gastric body ,2 cases in the gastric cardia ,3 cases in the diatal.14 cases underwent CT plain and contrast-enhanced scanning while 1 case only underwent CT plain. The 15 cases were single,round lumps with equable density. The performance of 14 routine enhancement scan was characterized by mild uniform strengthing of The arterial period ,further Strengthening of the venous phase,and mild prolonged delay. Conclusion The CT fingings of gistric schwannoma has certain characteristics. It usually occurred in gastric body with single type of circular lump and often presents with equable density. Homo-geneous progressive enhancement on dynamic CT is a characteristic finding of gistric schwannoma.
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Objective To explore the CT findings of gistric schwannoma and analyze the misdiagnosis causes to improve the diagnosis accuracy of the disease. Methods The findings of CT imaging in 15 cases with pathologically proved gistric schwannoma were reviewed restrospectively ,and relevant literatures were reviewed. Results In those 15 cases,3 were men,12 were women,the oldest was 61,the youngest was 33,and the medi-an age was 53.10 cases were located in the greater curvature side of gastric body ,2 cases in the gastric cardia ,3 cases in the diatal.14 cases underwent CT plain and contrast-enhanced scanning while 1 case only underwent CT plain. The 15 cases were single,round lumps with equable density. The performance of 14 routine enhancement scan was characterized by mild uniform strengthing of The arterial period ,further Strengthening of the venous phase,and mild prolonged delay. Conclusion The CT fingings of gistric schwannoma has certain characteristics. It usually occurred in gastric body with single type of circular lump and often presents with equable density. Homo-geneous progressive enhancement on dynamic CT is a characteristic finding of gistric schwannoma.
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Objective To explore the imaging radiological and clinicopathological characteristics of benign fibrous histiocytoma (BFH) of bone, in order to improve the imaging diagnostic accuracy of the disease Methods Radiological and clinical data of 16 patients with BFH confirmedbypathology were retrospectively analyzed , and relevant literatures were reviewed. Results The X-ray findings of 14 BFHpatients were osteolytic lesion , expansive destruction of bone,without soft tissue involvement, 10 with residual apophysis,9 with osteosclerosis marginal; CT was performed on 2 patients. Expansive destruction of bone and soft tissue densities were seen inside the loops , 1 case remarkable enhancement of the lesion. MRI was performed on 9 patients and 5 cases showed long T1 and T2 signal intensity; 1case showed equal T1 and long T2 signal intensity in cystic part and equal T1 and T2 signal intensity in the solid part. One patient had pathological fracture, and the surrounding soft tissue invaded, showing equal T1 and long T2 signal intensity. Two lesions located at spinous process of cervical vertebra , showing long T1 short T2 and equal T1 and T2 signal intensity. Linear low signal separation shadow in T1 and T2 could be seen in 6 cases. Long T1 and short T2 sclerotic ring were seen in 4 cases. Solid part of tumor and linear separator were obviously enhanced. Conclusions The radiological findings of benign fibrous histioeytoma of bone indicate some characteristics. The combination with X-ray , CT and MRI examination is helpful to improve the diagnostic accuracy of the disease before operation.
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Objective Mediastinal primary small cell neuroendocrine carcinoma ( MPSCNC) is a rare neoplasm of high ma-lignant potential mostly affecting elderly and middle-aged males, which has a high rate of misdiagnosis because of its unidentified histo-genesis and lack of obvious characteristic imaging findings .This study was to investigate the CT findings and pathologic features of MP-SCNC, so as to improve the recognition and diagnostic accuracy of the disease . Methods We retrospectively analyzed the imaging and clinicopathologic data about 4 cases of pathologically confirmed MPSCNC and reviewed relevant literature . Results Of the 4 tumors, 2 were located in the anterior-middle-superior mediastinum , 1 in the anterior-superior mediastinum , and the other in the mid-dle-superior mediastinum .Three of them exhibited irregular shape , unclear boundary , and inhomogeneous density , with low-density cyst degeneration and necrosis , of which two had scattered punctate calcifications .Enhanced scanning revealed moderate uneven en-hancement in 3 cases and ring-shaped enhancement the other .Pathological findings showed small tumor cells with marked pleomor-phism, little cytoplasm, pale chromatin, inconspicuous or absent nucleoli , and obvious mitotic figures.Immunochemistry manifested positive CgA, Syn, and CK in all the 4 cases, positive NSE, CD56, and Ki-67 in 3 cases, and positive epithelial membrane antigen in 1. Conclusion A tumor located in the anterior-middle mediastinum with scattered punctate calcifications and compressing or inva-ding the adjacent mediastinal structures should be suspected as a small cell neuroendocrine carcinoma . However , definite diagnosis should be based on histopathologic and immunohistochemical exami-nations .
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Objective To investigate the MSCT imaging of anterior mediastinal primary malignant tumors , and to improve the accuracy of diagnosis. Methods The imaging and clinical data of forty-five patients with anterior mediastinal primary malignant tumors were retrospectively analyzed. Results Among all forty-five cases, there were seventeen thymic carcinomas , and cystic and necrotic earas were seen in all cases. Fourteen were malignant lymphomas with a single irregular soft tissue mass or multiple merged nodules. There were enlarge lymph nodes around the tumors and (or) in other parts of the body. Twelve cases were malignant germinomas, the levels of rinary human chorionic gonadotropin (HCG) or blood armour fetuin (AFP) were abnormal in ten cases, and calcifications were seen in four cases and fat composition was observed in three cases. One malignant solitary fibrous tumor was observed on the left side of the anterior-superior mediastinum with cystic degeneration and necrosis. One was neuroendocrine carcinoma with clear boundary , cystic degeneration and necrosis , after enhanced scanning , it showed ring-shaped reinforcement. Conclusion Anterior mediastinal primary malignant tumors have certain characteristics of MSCT findings , in combination with clinical information , which can help the diagnosis and efficacy evaluation.
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Objective To evaluate the efficacy and safety of butyl flufenamate ointment for the treatment of solar dermatitis.Methods Sixty-four patients with solar dermatitis were randomly divided into the observation group (n =32) and control group (n =32) to topically apply butyl flufenamate ointment and diclofenac sodium cream,respectively,for 3 weeks.The efficacy was evaluated by lesion scores and a visual analog scale for pruritus.Results At the end of the treatment,4 patients in the observation group were clinically cured,19 markedly improved,17 improved,and 2 showed no improvement; meanwhile,2 patients in the control group were clinically cured,11 markedly improved,14 improved,and 5 showed no improvement.The total response rate was significantly higher (93.8％ vs.84.4％,P ＜ 0.05),while the pruritus score was significantly lower (P ＜ 0.05) in the observation group than in the control group.Conclusion Butyl flufenamate ointment is superior to dicofenac sodium cream in terms of both efficacy and anti-pruritic effect.
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Digital Imaging Communications in Medicine(DICOM) was brought forward by ACR and NEMA to solve the joining problem of medical equipment. It is a public international standard now. Using DICOM in teleradiology is very important, especially for China. In this paper the authors analyze the contents and specialty of DICOM and make comments on how to use it in teleradiology and picture access and communication system(PACS).
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Computer Communication Networks , Reference Standards , Radiology Information Systems , Reference Standards , Software , Systems Integration , TeleradiologyABSTRACT
Objective To discuss how to properly fuse Anesthesia Information Management System(AIMS)and original Clinical Information System in a hospital.Methods 3key problems in AIMS are discussed i.e.data acquisition,anesthesia fee and offline run.Results AIMS expanded and enhanced the system's utility and adaptability,which was helpful to other clinical information system as a reference.Conclusion Developed and expanded from the original system,AIMS in anesthesia department is fully utilized in daily medical treatment,teaching,scientific research and management.
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Objective To resolve the sharing of the images which are dispersed in multiple mini-PACS in one hospital or in the distributed PACS in the different hospitals.Methods The grid technology and the medical image network were integrated to research some key technologies on a medical image storage grid.Results Basing on the services provided by grid and considering the hospital's situation,two layers architecture of storage grid that was adapted with the sharing character of the medical information were put forward.Using the services provided by the storage grid,the dynamic storage extension was realized.Conclusion The medical image storage grid can integrate multiple storage systems in the image network.It supports the effective usage of the storage system and transparent accessing for users.
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The paper introduces our hospital as a former military hospital in the system conversion process.In order to adapt to administration of Guangdong Province,the first page of medical record program of hospital information systems is developed.
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Objective To analyze health insurance cost based business intelligence technology in which science and real-time environment,the intelligent support of scientific management and decision-making was provided for hospital health insurance operation.Methods The analysis model and various graphics and report analysis of statistical results were established by use of modern business intelligence tools to extract data.Results It is feasible and scientific to make further analysis of health insurance administration and decision-making.The insurance income,workloads and the medicare costs for patients are analyzed on multi-dimension and multi-angle conditions.Conclusion It is necessary to do a good job in the analysis of health insurance for scientific management and decision-making,which can control over-treatment and insurance spending,thus adequate quality of health care services are given by patients.