Advance in osteoporosis screening methods / 中华内分泌代谢杂志

Osteoporosis has become a common chronic disease which seriously endangers the health of the elderly. China is facing high incidence of osteoporosis along with " three low" rates of screening, diagnosis, and treatment, the crux of which lies in the lack of convenient and effective screening methods for osteoporosis. DXA, the gold standard for the diagnosis of osteoporosis, has many setbacks such as expensive, radiation, and low accessibility in community, etc. which limits its application in large scale screening. The community screening methods for osteoporosis recommended by national guidelines are IOF one-minute test, osteoporosis self-assessment tool for Asians(OSTA), fracture risk assessment tool(FRAX ?), and quantitative ultrasound(QUS). In recent years, digital X-ray radiogrammetry(DXR) and opportunistic quantitative computed tomography(QCT)have also shown great potential in osteoporosis screening. This article reviews the application and research progress of the above screening methods, with the aim of improving the screening rate and contributing to the tertiary prevention and control mechanism of " wide awareness, early diagnosis and early treatment" of osteoporosis.

Application of bone suppression imaging in the diagnosis of occupational pneumoconiosis / 中国职业医学

@#Objective （ ） To explore the application value of bone suppression imaging BSI in the diagnosis of occupational （ pneumoconiosis） Methods - pneumoconiosis hereinafter referred to as " " . A total of 330 chest films of high kV digital （ ） radiograph DR of patients with suspected pneumoconiosis were selected by convenient sampling method. BSI is applied to the ， ， ， ， chest films and the differences of small opacity shape small opacity aggregation the number of large opacity lung areas small （ ）， opacity profusion and diagnostic stage of pneumoconiosis were analyzed by simple DR reading DR group simple BSI reading （ ） （ ） Results BSI group and DR and BSI combined reading combined group . There was no significant difference in the distribution of small shadows and the detection rate of small shadows aggregation and large shadows in pneumoconiosis among （ P ） ， the three film reading methods all >0.05 . For the concentration distribution of each lung area there was statistically （P< ）， significant difference between the DR group and the BSI group 0.05 but there was no statistically significant difference ， （ P ） between the DR group and the combined group and between the BSI group and the combined group all >0.05 . The results of ， consistency analysis showed that the DR group and the BSI group and the DR group and the combined group had high （ ， P< consistency in the judgment of small shadow intensity in the lung region both weighted Kappa coefficient were 0.75 all ） 0.01 . There was a high consistency between BSI group and DR group and combined group and DR group in the diagnosis of （ ， ， P< ） ， pneumoconiosis stage weighted Kappa coefficient were 0.77 0.79 all 0.01 . Compared with the DR group the diagnostic ， rate of pneumoconiosis stage Ⅰwas significantly reduced and the diagnostic rate of pneumoconiosis stage Ⅱ was significantly （ P< ） ， increased in the BSI group and the combined group all 0.01 . However there was no significant difference in the diagnosticrate of pneumoconiosis stage Ⅲ >0.05 . Both the BSI reading and DR and BSI combined reading can improve ， the display of pneumoconiosis lesions to varying degrees and therefore can improve the diagnosis of pneumoconiosis. In ， addition the identification and diagnosis of pneumoconiosis lesions in the BSI reading is comparable to that in the combined ， group which has a good application value in the diagnosis of pneumoconiosis.

Gross Osteology and digital radiography of the common Capybara (Hydrochoerus hydrochaeris), Carl Linnaeus, 1766 for scientific and clinical application / Osteologia bruta e radiografia digital da capivara comum (Hydrochoerus hydrochaeris), Carl Linnaeus, 1766 para aplicação científica e clínica

Being able to study anatomical structures of wildlife species for science and clinical practice is of great importance. We aimed to describe the normal gross osteology of the common adult capybara Hydrochoerus hydrochaeris (Linnaeus, 1766), using macerated bone specimens and high-resolution digital radiography. The complete axial and appendicular skeleton was further compared with previously reported anatomical findings. For this purpose, we used three adult capybara cadavers (two females and one male), with a mean bodyweight of ±50 kg. Some H. hydrochaeris-specific morphological characteristics, especially in the skull region, show evidence of adaptation to aquatic life, such as an elongated head shape, with eyes, ears, and nose, located dorsally, to stay above water. Additionally, the entire bone structure demonstrates the size and weight support of the largest rodent and its adaptation with respect to foraging and locomotion behaviors. As a semi-aquatic herbivore, classified as cursorial (having limbs adapted for running), the authors believe it should be reclassified as cursorial-swimming/diving. Moreover, we argue to consider a differentiation between H. hydrochaeris silvestris to H. hydrochaeris synanthrope, due to substantial weight variation, in some cases > 100%. This inevitably has an impact on the development of bone structure, thus influencing habitual adaptation, and consequently, its clinical implications and animal handling. Radiography exams helped in the identification of bone structures, which otherwise were not observed in anatomical specimens, such as ossa sesamoidea, including the ossiclelunulae. Likewise, the radiographs were particularly helpful in overall better comprehension of the intubation and catheterization procedures. We believe this work can contribute as a reference to anatomical studies for students and professionals acting in clinic, surgery, and research.(AU)

Ser capaz de estudar estruturas anatômicas dos animais da fauna para fins científicos e prática clínica é de grande importância. Objetivamos descrever a osteologia geral normal de capivaras adultas Hydrochoerus hydrochaeris (Linnaeus, 1766), usando amostras de ossos macerados e radiologia digital de alta resolução. O esqueleto axial e apendicular foi posteriormente comparado a achados anatômicos reportados anteriormente. Para esse fim, nós utilizamos de três cadáveres de capivaras adultas (duas fêmeas e um macho) com peso médio de cerca de 50 kg. cada. Algumas características morfológicas de cavidade específicas, especialmente na região do crânio, evidenciam a adaptação à vida aquática, como o formato alongado da cabeça, com olhos, orelhas e nariz localizados dorsalmente, para permanência sobre a água. O completo desenvolvimento morfológico ósseo é evidência de tamanho e suporte de peso do maior roedor, assim como de seus hábitos de alimentação e locomoção, sendo um herbívoro semiaquático, classificado como cursório (tendo membros adaptados à corrida), caso em que os autores acreditam deveria ser reclassificado como cursorial-natação/mergulho. Além disso, argumentamos que deve ser considerada uma diferenciação entre H. hydrochaeris silvestris e H. hydrochaeris sinantropo, devido ao fato da variação substancial de peso, em alguns casos> 100%, inevitavelmente terá um impacto no desenvolvimento da estrutura óssea, influenciando, assim, a adaptação habitual e, consequentemente, suas implicações clínicas e manejo animal. A radiografia auxiliou na correlação e identificação de estruturas ósseas que não observadas em espécimes anatômicos, como o osso sesamóide, incluindo o ossículo lunar. Ademais, as radiografias foram particularmente úteis para uma melhor compreensão geral de procedimentos de intubação e cateterização. Acreditamos que este trabalho possa contribuir como referência de estudos anatômicos para estudantes e profissionais atuantes em clínica, cirurgia e pesquisa.(AU)

Value of improved photography position for post-operative evaluation of proximal humeral fracture / 医疗卫生装备

Objective To compare the values of two photography positions for the evaluation after locking plate implantation of the proximal humeral fracture patient.Methods Totally 200 proximal humeral frature patients after locking plate implantation had the front and lateral shoulder joint X-ray films with the conventional and improved photography positions analyzed retrospectively.Post-operative evaluation was carried out with double-blind method from the aspects of morphology of humeral head,condition of locking plate and screw,humeral head angle and bone cortex around humerus.Results Improved photography position behaved better than the conventional position in displaying morphology of humeral head,condition of locking plate and screw,humeral head angle and bone cortex around humerus.Conclusion Improved photography position is recommended to photograph the lateral side of the locking plate for post-operative evaluation.

The application of large flat-panel multifunction digital X-ray machine in digestive system / 中国医学装备

Objective: To evaluate the application value of large flat-panel multifunction digital machine in digestive system. Methods: Exam the gastrointestinal tract and biliary with dynamic detector, and then observe its advantages and disadvantages. Results: All the 13 gastrointestinal cancer lesions and 15 inflammatory lesions were shown clearly, including mucosa. Biliary tomography found two small stones, which were undetected by the general X-ray photography. The excellent rate of the photo was improved to 98%. Conclusion: The advantages of the flat panel detector include the wide range of display, clear image of digital pulse fluoroscopy spot film, the improvement of the diagnostic accuracy and the reduction in radiation dose. The disadvantage is that it is more inconvenient than the remote cradle gastrointestinal machine in rotating the position of the patient.

Study of fusion of ischial tuberosity in Gujarati population by using digital x-ray method.

Forensic Medicine experts have to evaluate age in different medico legal situations, especially when the identity is not known, when the liability and punishment are related to the maturity. The study of epiphysial union of bones is considered a reasonable scientific and accepted method for estimation of age by the courts of law all over the world. The present study was carried out on 150 persons of age group between 17-21 years by using digital X-ray method in the Department of Forensic medicine and Toxicology at Govt. Medical College & New Civil Hospital, Surat.The present study possibly may generate the data giving shorter age intervals of fusion of centers of Ischial tuberosity (as compared to the standard text books or on the other end, may even positively reconfirm the evidential value of current data by using modern technique of digital X-ray). Anyhow, it will contribute to the better procurement and application of justice.

Radiological study of fusion of iliac crest by digital method.

Forensic medicine experts have to evaluate age in different medico legal situations. The study of epiphyseal union of bones is considered a reasonable scientific and accepted method for estimation of age by the courts of law all over the world. Most of the data generated till now was based on the routine X-ray methods and not using digital X-Ray method. The present study was carried out on 150 persons of age group between 17-21 years by using digital X-ray method in the Department of Forensic medicine and Toxicology at Govt. Medical College & New Civil Hospital, Surat.The present study possibly may generate the data giving shorter age intervals of fusion of centers of iliac crest (as compared to the standard text books or on the other end, may even positively reconfirm the evidential value of current data by using modern technique of digital X-ray. This study will also study the effect of nutritional status, socio-economic condition, type of work, height, weight of the person on fusion of iliac crest.

New Advance of Digital X-ray Imaging Technique / 医疗卫生装备

Digital X-ray imaging technique has been developing rapidly in recent years, and makes it possible for people to be radiated by lower X-ray dose than before to get the images for diagnosis. Current development in 7 aspects about digital roentgenography is introduced in this article.

Software Development for Portable Digital X-ray Machine and Telemedicine Image Workstation / 医疗卫生装备

Objective To provide high-quality health care services to persons whose access is restricted by geography or environment and disaster or battle situation. Methods X-ray equipment was based on embedded Linux operating system, and used OMAP1510 as its hardware developing platform. Telemedicine image workstation was based on Windows operating system, and used VC++6.0 as its software developing platform. Results Telemedicine image workstation could achieve and process images from X -ray machine. Conclusion The system can be applied to real-time acquisition of medical images and telemedicine.

Estudo comparativo da imagem radiográfica convencional e digital para avaliação de desenvolvimento dentário / Comparative study of conventional and computed radiographic image for dental developing evaluation

Neste trabalho propusemo-nos a comparar as imagens radiográficas obtidas através de técnica radiográfica convencional e do sistema digital direto, na avaliação do processo de crescimento e desenvolvimento dentário. Para a elaboração de nosso trabalho, selecionamos 30 crianças entre 6 e 12 anos de idade para a realização de duas tomadas radiográficas periapicias do segundo pré-molar inferior esquerdo, em cada criança, sendo uma pela técnica de paralelismo com filme convencional e a outra pelo sistema digital direto com sensor CCD. As 30 radiografias convencionais foram digitalizadas através de scanner de mesa e um total de 90 imagens foram apresentadas a 4 examinadores. O método de escolha para análise do crescimento e desenvolvimento dentário foi de Nolla (1960). Os valores obtidos foram processados e analisados pela análise de variância e testes adicionais F de Snedecor. Concluímos que: 1. Os escores atribuídos para os estágios de calcificação de Nolla, se modificam em função do tipo de radiografia analisada e das características do profissional; 2. As radiografias convencional e digital direta foram estatisticamente diferentes para avaliação do crescimento e desenvolvimento dentário

The purpose of this study was to evaluate the effectiveness of direct digital X-ray in determining dental calcification. Thirty children aged from 6 to 12, were selected and radiographs from left lower second premolar were obtained using conventional and computed dental radiograph. To comparative evaluation, the conventional X-ray was scanned and we had 90 images to be assessed for four different specialists. Each image was observed twice in a one week interval, using Nolla's development dental stages method. The scores were treated with ANOVA test and F Snedecor statistics. We concluded that: 1. Nolla's scores are modificated depending on the kind of radiograph analized and professional's characteristics; 2. Conventional and direct digital radiographs were statistically differents for dental development evaluation

The study of digital X-ray data storage and communication / 医疗卫生装备

DICOM is an international standard in medical imaging and communication. This paper introduces the design of digital X-ray data storage and communication according to DICOM3.0 and emphasizes the implementation of such modules as the ones for communication and data storage.

Development situation of the flat detector for digital X-ray photography / 医疗卫生装备

Digital X-ray photography has been applied to clinical medicine in recent 3years.This paper introduces the development situation of the flat detectors for digital X-ray photography.The technical indexes and structure differences of the detectors are presented in this paper.