Abdominal Organ Location, Morphology, and Rib Coverage for the 5th, 50th, and 95th Percentile Males and Females in the Supine and Seated Posture Using Multi-Modality Imaging

The purpose of this study was to use data from a multi-modality image set of males and females representing the 5th, 50th, and 95th percentile (n=6) to examine abdominal organ location, morphology, and rib coverage variations between supine and seated postures. Medical images were acquired from volunteers in three image modalities including Computed Tomography (CT), Magnetic Resonance Imaging (MRI), and upright MRI (uMRI). A manual and semi-automated segmentation method was used to acquire data and a registration technique was employed to conduct a comparative analysis between abdominal organs (liver, spleen, and kidneys) in both postures. Location of abdominal organs, defined by center of gravity movement, varied between postures and was found to be significant (p=0.002 to p=0.04) in multiple directions for each organ. In addition, morphology changes, including compression and expansion, were seen in each organ as a result of postural changes. Rib coverage, defined as the projected area of the ribs onto the abdominal organs, was measured in frontal, lateral, and posterior projections, and also varied between postures. A significant change in rib coverage between postures was measured for the spleen and right kidney (p=0.03 and p=0.02). The results indicate that posture affects the location, morphology and rib coverage area of abdominal organs and these implications should be noted in computational modeling efforts focused on a seated posture.

• Record URL:
  http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3861817/
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19432461
• Supplemental Notes:
  • Abstract reprinted with permission from Association for the Advancement of Automotive Medicine.
• Corporate Authors:

  Association for the Advancement of Automotive Medicine (AAAM)

  P.O. Box 4176
  Barrington, IL  United States  60011-4176
• Authors:
  • Hayes, Ashley R
  • Gayzik, Scott
  • Moreno, Daniel
  • Stitzel, Joel
• Conference:
  • 57th Annual Scientific Conference of the Association for the Advancement of Automotive Medicine
  • Location: Québec City , Canada
  • Date: 2013-9-23 to 2013-9-25
• Publication Date: 2013-9

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: pp 111-122
• Monograph Title: Annals of Advances in Automotive Medicine. 57th Annual Scientific Conference, Québec City, Canada, September 23-25, 2013
• Serial:
  • Annals of Advances in Automotive Medicine
  • Volume: 57
  • Publisher: Association for the Advancement of Automotive Medicine (AAAM)
  • ISSN: 1943-2461

Subject/Index Terms

• TRT Terms: Abdomen; Crash injuries; Diagnostic tests; Dummies; Injury severity; Nuclear magnetic resonance; Passengers; Posture
• Candidate Terms: Imaging systems
• Subject Areas: Highways; Safety and Human Factors; I84: Personal Injuries;

Filing Info

• Accession Number: 01528273
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 16 2014 9:52AM