The most-cited articles in pediatric imaging: a bibliometric analysis.

INTRODUCTION: The number of citations that an article has received reflects its impact on the scientific community. The purpose of our study was to identify and characterize the 51 most-cited articles in pediatric imaging. EVIDENCE ACQUISITION: Based on the database of Journal Citation Reports, we selected 350 journals that were considered as potential outlets for pediatric imaging articles. The Web of Science search tools were used to identify the most-cited articles relevant to pediatric imaging within the selected journals. EVIDENCE SYNTHESIS: The 51 most-cited articles in pediatric imaging were published between 1952 and 2011, with 1980-1989 and 2000-2009 producing 15 articles, each. The number of citations ranged from 576-124 and the number of annual citations ranged from 49.05-2.56. The majority of articles were published in pediatric and related journals (N.=26), originated in the USA (N.=23), were original articles (N.=45), used MRI as imaging modality (N.=27), and were concerned with the subspecialty of brain (N.=34). University College London School of Medicine (N.=6) and School of Medicine University of California (N.=4) were the leading institutions and Reynolds EO (N.=7) was the most voluminous author. CONCLUSIONS: Our study presents a detailed list and an analysis of the most-cited articles in the field of pediatric imaging, which provides an insight into historical developments and allows for recognition of the important advances in this field.

The one-hundred most-cited articles focused on thyroid research: a bibliometric analysis.

INTRODUCTION: The number of citations that an article has received reflects its impact on a particular research area. EVIDENCE ACQUISITION: We determined the one-hundred most-cited articles in thyroid research via the Institute for Scientific Information Web of Knowledge database, using the search term. The following parameters were used to analyze the characteristics of the 100 most-cited articles: publication year, journal (including subject category and impact factor), number of citations and annual citations, authors, department, institution, country, type of study, and topic. EVIDENCE SYNTHESIS: The number of citations for the 100 most-cited articles ranged from 2521 to 412 (mean, 643.4) and the number of annual citations ranged from 392.9 to 7.1 (mean, 38.0). The majority of articles were published in 2000-2009 (32%), published in endocrinology journals (29%), originated in the USA (70%), were clinical observation study (31%), and dealt with nodular thyroid disease (32%). Department of Internal Medicine, Johns Hopkins University School of Medicine and Department of Internal Medicine, Ohio State University College of Medicine (N.=6 each) were the leading institutions and Mazzaferri EL (N.=7) was the most prolific author. CONCLUSIONS: Our study presents a detailed list and analysis of the 100 most-cited thyroid research articles, which provides a unique insight into the historical development in this field.

Citation classics in central nervous system inflammatory demyelinating disease.

OBJECTIVES: To identify and analyze the characteristics of the most influential articles about central nervous system (CNS) inflammatory demyelinating disease. MATERIALS AND METHODS: The Institute for Scientific Information (ISI) Web of Science database and the 2014 Journal Citation Reports Science Edition were used to retrieve the top 100 cited articles on CNS inflammatory demyelinating disease. The citation numbers, journals, years of publication, authorships, article types, subjects and main issues were analyzed. For neuromyelitis optica (NMO), articles that were cited more than 100 times were regarded as a citation classic and described separately. RESULTS: The top 100 cited articles were published between 1972 and 2011 in 13 journals. The highest number of articles (n = 24) was published in Brain, followed by The New England Journal of Medicine (n = 21). The average number of citations was 664 (range 330-3,897), and 64% of the articles were from the United States and the United Kingdom. The majority of the top 100 cited articles were related to multiple sclerosis (n = 87), and only a few articles reported on other topics such as NMO (n = 9), acute disseminated encephalomyelitis (n = 2) and optic neuritis (n = 2). Among the top 100 cited articles, 77% were original articles. Forty-one citation classics were found for NMO. CONCLUSIONS: Our study provides a historical perspective on the research progress on CNS inflammatory demyelinating disease and may serve as a guide for important advances and trends in the field for associated researchers.

Which arm and vein are more appropriate for single-step, non-fluoroscopic, peripherally inserted central catheter insertion?

OBJECTIVE: We investigated which arm and vein led to the most successful outcomes during non-fluoroscopic peripherallyinserted central catheter (PICC) insertion. METHODS: A total of 743 cases from July 2012 to March 2014 were retrospectively reviewed. We also analyzed the following: 1) accessed arm (right or left), 2) accessed vein (cephalic, basilic, or brachial), 3) primary and secondary success rates, 4) causes of failure (location of obstacles), and 5) problemsolving methods for catheter repositioning. RESULTS: The primary success rate was 46.3% (344/743) with 49.4% (123/249) on the right arm and 44.7% (273/494) on the left arm. The secondary success rate was 53.7% (399/743) with 50.6% (126/249) on the right arm and 55.3% (273/494) on the left arm. The causes of failure were 100% (43/43) for the left cephalic vein, 61.5% (8/13) for the right cephalic vein, 50.6% (43/85) for the left brachial vein, and 51.1% (23/45) for the right brachial vein, 51.1% (187/366) for the left basilic vein, and 49.7% (95/191) for the right basilic vein. The failure rate through the left cephalic vein was significantly higher than that for other veins. The most common locations of obstacles were the subclavian vein (28.8%, 115/399), axillary vein (24.3%, 97/399), and brachiocephalic vein (19.3%, 77/399). The most common problem-solving methods were with guidewire assistance (74.7%, 298/399), venographic guidance (13.8%, 55/399), and fluoroscopic guidance (11.5%, 46/399). CONCLUSIONS: Right-arm access through the basilic or brachial vein may be more appropriate for successful nonfluoroscopic PICC insertion compared with the access through the left arm and the cephalic vein.