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The reproducibility of measuring maximum abdominal aortic aneurysm diameter from ultrasound images.
Matthews, Evan O; Pinchbeck, Jenna; Elmore, Kylie; Jones, Rhondda E; Moxon, Joseph V; Golledge, Jonathan.
Affiliation
  • Matthews EO; Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia.
  • Pinchbeck J; Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia.
  • Elmore K; Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, QLD, 4812, Australia.
  • Jones RE; Australian Institute for Tropical Health and Medicine, James Cook University, Townsville, QLD, 4811, Australia.
  • Moxon JV; Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia.
  • Golledge J; Australian Institute for Tropical Health and Medicine, James Cook University, Townsville, QLD, 4811, Australia.
Ultrasound J ; 13(1): 13, 2021 Feb 26.
Article in En | MEDLINE | ID: mdl-33646456
ABSTRACT

BACKGROUND:

Accurate repeat assessment of the diameter of an abdominal aortic aneurysm (AAA) is important. This study investigated the reproducibility of different methods of measuring AAA diameter from ultrasound images.

METHODS:

Fifty AAA patients were assessed by ultrasound. Maximum AAA diameter was measured independently by three trained observers on two separate occasions using a standardised protocol. Five diameters were measured from each scan, three in the anterior-posterior (AP) and two in the transverse (TV) plane, including inner-to-inner (ITI), outer-to-outer (OTO) and leading edge-to-leading edge (LETLE). Intra- and inter-observer reproducibility were reported as reproducibility coefficients. Statistical comparison of methods was performed using linear mixed effects models.

RESULTS:

Intra-observer reproducibility coefficients (AP LETLE 2.2 mm; AP ITI 2.4 mm; AP OTO 2.6 mm) were smaller than inter-observer reproducibility coefficients (AP LETLE 4.6 mm AP ITI 4.5; and AP OTO 4.8 mm). There was no statistically significant difference in intra-observer reproducibility of three types of measurements performed in the AP plane. Measurements obtained in the TV plane had statistically significant worse intra-observer reproducibility than those performed in the AP plane.

CONCLUSIONS:

This study suggests that the comparison of maximum AAA diameter between repeat images is most reproducibly performed by a single trained observer measuring diameters in the AP plane.
Key words

Full text: 1 Database: MEDLINE Language: En Journal: Ultrasound J Year: 2021 Type: Article Affiliation country: Australia

Full text: 1 Database: MEDLINE Language: En Journal: Ultrasound J Year: 2021 Type: Article Affiliation country: Australia