Archives ; Humans ; Occupational Health

BACKGROUND: The plastic surgery literature is vast, consisting of a plethora of diverse articles written by a myriad of illustrious authors. Despite this considerable archive of published material, it remains nebulous as to which precise papers have had the greatest impact on our specialty. The aim of this study was to identify the most cited papers in the plastic surgery literature and perform a citation analysis paying particular attention to the evidence levels of the clinical studies. METHODS: We identified the 50 most cited papers published in the 20 highest impact plastic surgery journals through the Web of Science. The articles were ranked in order of number of citations acquired and level of evidence assessed. RESULTS: The top 50 cited papers were published in six different journals between the years 1957 and 2007. Forty-two of the papers in the top 50 were considered as level IV or V evidence. No level I or II evidence was present in the top 50 list. The average level of evidence of the top 50 papers was 4.28. CONCLUSIONS: In the plastic surgery literature, no positive correlation exists between a high number of citations and a high level of evidence. Anatomical reconstructive challenges tend to be the main focus of plastic surgery rather than pathologic diseases and consequently, papers with lower levels of evidence are relatively more valuable in plastic surgery than many other specialties.
Archives ; Bibliometrics ; Surgery, Plastic*

OBJECTIVE: The purpose of this study was to evaluate the reliability and quality of radiomic features in glioblastoma multiforme (GBM) derived from tumor volumes obtained with semi-automated tumor segmentation software. MATERIALS AND METHODS: MR images of 45 GBM patients (29 males, 16 females) were downloaded from The Cancer Imaging Archive, in which post-contrast T1-weighted imaging and fluid-attenuated inversion recovery MR sequences were used. Two raters independently segmented the tumors using two semi-automated segmentation tools (TumorPrism3D and 3D Slicer). Regions of interest corresponding to contrast-enhancing lesion, necrotic portions, and non-enhancing T2 high signal intensity component were segmented for each tumor. A total of 180 imaging features were extracted, and their quality was evaluated in terms of stability, normalized dynamic range (NDR), and redundancy, using intra-class correlation coefficients, cluster consensus, and Rand Statistic. RESULTS: Our study results showed that most of the radiomic features in GBM were highly stable. Over 90% of 180 features showed good stability (intra-class correlation coefficient [ICC] ≥ 0.8), whereas only 7 features were of poor stability (ICC < 0.5). Most first order statistics and morphometric features showed moderate-to-high NDR (4 > NDR ≥1), while above 35% of the texture features showed poor NDR (< 1). Features were shown to cluster into only 5 groups, indicating that they were highly redundant. CONCLUSION: The use of semi-automated software tools provided sufficiently reliable tumor segmentation and feature stability; thus helping to overcome the inherent inter-rater and intra-rater variability of user intervention. However, certain aspects of feature quality, including NDR and redundancy, need to be assessed for determination of representative signature features before further development of radiomics.
Archives ; Consensus ; Glioblastoma* ; Humans ; Male

Archives ; Information Management ; Occupational Health

OBJECTIVES: The ability to support healthcare document sharing is imperative in a health information exchange (HIE). Sharing imaging documents or images, however, can be challenging, especially when they are stored in a picture archiving and communication system (PACS) archive that does not support document sharing via standard HIE protocols. This research proposes a standard-compliant imaging gateway that enables connectivity between a legacy PACS and the entire HIE. METHODS: Investigation of the PACS solutions used at Gil Hospital was conducted. An imaging gateway application was then developed using a Java technology stack. Imaging document sharing capability enabled by the gateway was tested by integrating it into Gil Hospital's order communication system and its HIE infrastructure. RESULTS: The gateway can acquire radiology images from a PACS storage system, provide and register the images to Gil Hospital's HIE for document sharing purposes, and make the images retrievable by a cross-enterprise document sharing document viewer. CONCLUSIONS: Development of an imaging gateway that mediates communication between a PACS and an HIE can be considered a viable option when the PACS does not support the standard protocol for cross-enterprise document sharing for imaging. Furthermore, the availability of common HIE standards expedites the development and integration of the imaging gateway with an HIE.
Archives ; Delivery of Health Care ; Indonesia

Archives ; China ; Humans ; Occupational Health ; Residence Characteristics

PURPOSE: This study was performed to evaluate the usefulness of compression of radiologic images by using personal computer(PC) and the clinically acceptable compression ratio for personal archiving. MATERIALS AND METHODS: The 300 images of total 60 cases including 10 cases each of plain radiograph, angiography, barium study, US, CT, and MRI were obtained from video camera recorder and were digitalized at image board of PC with 628 x430 matrix and archived to 8 bit gray scale for BMP, TIFF, PCX, GIF, 16 bit color for TGA, and 8 bit gray scale and 24 bit color for JPEG. We compared the image quality on each of the 6 image file formats and various compression ratios by using a ROC(receiver operating characteristic) analysis. RESULTS: The file size order was TGA, BMP, PCX, TIFF, GIF, and the smallest JPEG. The excution time for compression and decompression of images ranged from 10 to 20 seconds and from 4 to 7 seconds, respectively. The compression ratio for TGA and TIFF, PCX, and GIF was less than 1.5:1 whereas it was more than 3:1 for JPEG. The higher the compression ratio of JPEG, the more degradation of image quality occurred although compression ratio below 20:1 made no considerable difference. In the remainder, the image quality was same before and after the compression. The digital images of US, CT, and MR showed lower degradation of image quality than plain radiograph, angiography, and barium study. CONCLUSION: The clinically acceptable limiting compression ratio of JPEG was 20: 1 which would be adequate for managing the large volume of image database on a PC-based digital imaging system.
Angiography ; Archives* ; Barium ; Decompression ; Humans ; Magnetic Resonance Imaging

OBJECTIVE: This study was conducted to investigate public opinion regarding personal health management service using Personal Health Record (PHR) in Korea. Specifically, the relationships between consumer's demographic characteristics, need for health information, consumer's benefit and concern, type of health information, type of management and security of patient information using PHR and attitude to PHR were explored. METHODS: A survey was conducted, using questionnaire developed by the study team based on literature review. Structured questionnaires were completed through a telephone survey for 715 consumers. RESULTS: A key finding was the significant difference for customer's attitude towards using PHR by customer's characteristics. Regarding factors affecting attitudes of customers with higher concern about their health, considering authorization level to access their private information and using reliable method to certificate were more likely to prefer PHR system positively. CONCLUSION: Public opinion is reflected in policy of health information. Meeting consumers' needs sufficiently, the goal of health information service to improve consumers' accessibility to and satisfaction will archive successfully.
Archives ; Health Records, Personal ; Humans ; Information Services ; Korea ; Public Opinion ; Surveys and Questionnaires ; Telephone

PURPOSE: This study was performed to evaluate the reliability of the identification of anatomical landmarks in panoramic and lateral cephalometric radiographs on a standard medical grade picture archiving communication system (PACS) monitor and a tablet computer (iPad 5). MATERIALS AND METHODS: A total of 1000 radiographs, including 500 panoramic and 500 lateral cephalometric radiographs, were retrieved from the de-identified dataset of the archive of the Section of Oral and Maxillofacial Radiology of the University Of Connecticut School Of Dental Medicine. Major radiographic anatomical landmarks were independently reviewed by two examiners on both displays. The examiners initially reviewed ten panoramic and ten lateral cephalometric radiographs using each imaging system, in order to verify interoperator agreement in landmark identification. The images were scored on a four-point scale reflecting the diagnostic image quality and exposure level of the images. RESULTS: Statistical analysis showed no significant difference between the two displays regarding the visibility and clarity of the landmarks in either the panoramic or cephalometric radiographs. CONCLUSION: Tablet computers can reliably show anatomical landmarks in panoramic and lateral cephalometric radiographs.
Archives ; Connecticut ; Dataset ; Humans ; Radiography, Dental, Digital ; Radiography, Panoramic ; Radiology Information Systems

PURPOSE: This study aimed to evaluate the prevalence of Haller cells and accessory maxillary ostium (AMO) in cone-beam computed tomography (CBCT) images, and to analyze the relationships among Haller cells, AMO, and maxillary sinusitis. MATERIALS AND METHODS: Volumetric CBCT scans from 201 patients were retrieved from our institution's Digital Imaging and Communications in Medicine archive folder. Two observers evaluated the presence of Haller cells, AMO, and maxillary sinusitis in the CBCT scans. RESULTS: AMO was observed in 114 patients, of whom 27 (23.7%) had AMO exclusively on the right side, 26 (22.8%) only on the left side, and 61 (53.5%) bilaterally. Haller cells were identified in 73 (36.3%) patients. In 24 (32.9%) they were present exclusively on the right side, in 17 (23.3%) they were only present on the left side, and in 32 (43.8%) they were located bilaterally. Of the 73 (36.3%) patients with Haller cells, maxillary sinusitis was also present in 50 (68.5%). On using chi-square test, a significant association was observed between AMO and maxillary sinusitis in the presence of Haller cells. CONCLUSION: Our results showed AMO and Haller cells to be associated with maxillary sinusitis. This study provides evidence for the usefulness of CBCT in imaging the bony anatomy of the sinonasal complex with significantly higher precision and a smaller radiation dose.
Archives ; Cone-Beam Computed Tomography* ; Humans ; Maxillary Sinus ; Maxillary Sinusitis ; Prevalence*