title: Quantitative analysis of the right auricle with 256-slice computed tomography.
abstract: OBJECTIVE
  To quantitatively measure the morphology parameters of the right auricle with 256-slice multidetector computed tomography angiography (MDCTA) in healthy people.
  
  
  METHODS
  A retrospective analysis of 200 patients who had undergone coronary MDCTA with negative findings was performed. The raw imaging data were reconstructed and the right auricular volume, right atrial volume, right auricle height, base long and short axes, base perimeter and area, normal angle, and distance were quantitatively measured.
  
  
  RESULTS
  Men had significantly (P < 0.05) greater values than women in the right auricular volume (13.3 ± 4.0 vs. 11.7 ± 3.7 mL) and height (33.0 ± 5.0 vs. 30.5 ± 5.2 mm), the base long axis (34.4 ± 4.1 vs. 33.2 ± 3.9 mm), area (787.6 ± 177.6 vs. 771.0 ± 143.2 mm2) and perimeter (119.2 ± 17.5 vs. 115.0 ± 13.0), and the normal distance (22.4 ± 6.6 vs. 20.2 ± 6.7 mm). The normal 95 % reference range for the right auricular parameters was put forward. The right auricular parameters had a good correlation with the right atrium volume, aortic diameter, the body weight, height, and body surface area but a bad correlation with the vertebral body height. Significantly (P < 0.05) greater values were found in the normal angle and distance in subjects below than over 40 years of age. No other significant (P > 0.05) difference existed in the other right auricular parameters.
  
  
  CONCLUSIONS
  Quantitative measurements of the right auricle can help us get a good understanding of the right auricular morphology and its relationship with surrounding structures and are helpful for cardiac interventions of electrophysiology and radiofrequency ablation.
authors.affiliation: Department of Medical Imaging, The Second Hospital, Hebei Medical University, 215 West Heping Road, Shijiazhuang, Hebei Province, 050000, People's Republic of China. licaiying63@163.com.
authors.forename: Cai-Ying
authors.initials: CY
authors.lastname: Li
authors.affiliation: Department of Medical Research, Shijiazhuang First Hospital, Hebei Medical University, 36 Fanxi Road, Shijiazhuang, Hebei Province, 050011, People's Republic of China. browngao@163.com.
authors.forename: Bu-Lang
authors.identifier: http://orcid.org/0000-0003-4668-0737
authors.initials: BL
authors.lastname: Gao
authors.affiliation: Department of Medical Imaging, The Second Hospital, Hebei Medical University, 215 West Heping Road, Shijiazhuang, Hebei Province, 050000, People's Republic of China.
authors.forename: Tong
authors.initials: T
authors.lastname: Pan
authors.affiliation: Department of Medical Research, Shijiazhuang First Hospital, Hebei Medical University, 36 Fanxi Road, Shijiazhuang, Hebei Province, 050011, People's Republic of China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Xiang
authors.affiliation: Department of Medical Research, Shijiazhuang First Hospital, Hebei Medical University, 36 Fanxi Road, Shijiazhuang, Hebei Province, 050011, People's Republic of China.
authors.forename: Xue-Jing
authors.initials: XJ
authors.lastname: Zhang
authors.affiliation: Department of Medical Imaging, The Second Hospital, Hebei Medical University, 215 West Heping Road, Shijiazhuang, Hebei Province, 050000, People's Republic of China.
authors.forename: Xiao-Wei
authors.initials: XW
authors.lastname: Liu
authors.affiliation: Department of Medical Research, Shijiazhuang First Hospital, Hebei Medical University, 36 Fanxi Road, Shijiazhuang, Hebei Province, 050011, People's Republic of China.
authors.forename: Qiong-Ying
authors.initials: QY
authors.lastname: Fan
mesh_terms: D000328:Adult; D000368:Aged; D020517:Atrial Appendage / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D000072226:Computed Tomography Angiography / Q000379:methods; D017023:Coronary Angiography / Q000379:methods; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography / Q000379:methods; D012189:Retrospective Studies; D012737:Sex Factors
keywords: Adjacent structure; Morphology; Multidetector computed tomography; Quantitative measurement; Right auricle