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MRI of the normal appendix in children: data toward a new reference standard

Overview of attention for article published in Pediatric Radiology, February 2016
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About this Attention Score

  • Above-average Attention Score compared to outputs of the same age (55th percentile)
  • Good Attention Score compared to outputs of the same age and source (76th percentile)

Mentioned by

twitter
3 tweeters

Citations

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8 Dimensions

Readers on

mendeley
8 Mendeley
Title
MRI of the normal appendix in children: data toward a new reference standard
Published in
Pediatric Radiology, February 2016
DOI 10.1007/s00247-016-3559-1
Pubmed ID
Authors

David W. Swenson, Gary R. Schooler, Catherine Stamoulis, Edward Y. Lee

Abstract

Magnetic resonance imaging (MRI) might prove useful in the diagnostic evaluation of pediatric appendicitis in the effort to avoid exposing children to the ionizing radiation of CT, yet there is a paucity of literature describing the normal range of appearances of the pediatric appendix on MRI. To investigate MRI characteristics of the normal appendix to aid in establishing a reference standard in the pediatric population. We conducted a retrospective study of children and young adults (≤18 years of age) who underwent lumbar spine or pelvis MRI between Jan. 1, 2013, and Dec. 31, 2013, for indications unrelated to appendicitis. Two board-certified radiologists independently reviewed all patients' MRI examinations for appendix visualization, diameter, intraluminal content signal, and presence of periappendiceal inflammation or free fluid. We used the Cohen kappa statistic and Spearman correlation coefficient to assess reader agreement on qualitative and quantitative data, respectively. Three hundred forty-six patients met inclusion criteria. Both readers visualized the appendix in 192/346 (55.5%) patients (kappa = 0.88, P < 0.0001). Estimated median appendix diameter was 5 mm for reader 1 and 6 mm for reader 2 ([25th, 75th] quartiles = [5, 6] mm; range, 2-11 mm; r = 0.81, P < 0.0001). Appendix intraluminal signal characteristics were variable. Periappendiceal inflammation was present in 0/192 (0%) and free fluid in 6/192 (3.1%) MRI examinations (kappa = 1.0). The normal appendix was seen on MRI in approximately half of pediatric patients, with a mean diameter of ~5-6 mm, variable intraluminal signal characteristics, no adjacent inflammatory changes, and rare surrounding free fluid.

Twitter Demographics

The data shown below were collected from the profiles of 3 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 8 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 1 13%
Unknown 7 88%

Demographic breakdown

Readers by professional status Count As %
Unspecified 2 25%
Professor > Associate Professor 2 25%
Other 1 13%
Student > Postgraduate 1 13%
Student > Bachelor 1 13%
Other 1 13%
Readers by discipline Count As %
Medicine and Dentistry 5 63%
Unspecified 3 38%

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 March 2016.
All research outputs
#6,758,309
of 12,226,394 outputs
Outputs from Pediatric Radiology
#530
of 1,096 outputs
Outputs of similar age
#123,890
of 285,944 outputs
Outputs of similar age from Pediatric Radiology
#16
of 71 outputs
Altmetric has tracked 12,226,394 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,096 research outputs from this source. They receive a mean Attention Score of 3.0. This one has gotten more attention than average, scoring higher than 50% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 285,944 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 55% of its contemporaries.
We're also able to compare this research output to 71 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 76% of its contemporaries.