Quantitative analysis of respiration-related movement for abdominal artery in multiphase hepatic CT

Respiration-induced motion in the liver causes potential errors on the measurement of contrast medium in abdominal artery from multiphase hepatic CT scans. In this study, we investigated the use of hepatic CT images to quantitatively estimate the abdominal artery motion due to respiration by optical...

Full description

Saved in:
Bibliographic Details
Published in:PloS one 2014-12, Vol.9 (12), p.e114222-e114222
Main Authors: Lin, Yang-Hsien, Huang, Shih-Min, Huang, Chin-Yi, Tu, Yun-Niang, Liu, Shing-Hong, Huang, Tzung-Chi
Format: Article
Language:English
Subjects:
Abdomen - blood supply
Adult
Aged
Aged, 80 and over
Arteries - physiology
CAT scans
Computed tomography
Diagnostic imaging
Female
Humans
Liver
Liver - diagnostic imaging
Liver cancer
Male
Medical imaging
Medical personnel
Middle Aged
Movement
Multiphase
Optical flow (image analysis)
Physicians
Quantitative analysis
Regression Analysis
Respiration
Studies
Tomography
Tomography, X-Ray Computed - methods
Veins & arteries
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Respiration-induced motion in the liver causes potential errors on the measurement of contrast medium in abdominal artery from multiphase hepatic CT scans. In this study, we investigated the use of hepatic CT images to quantitatively estimate the abdominal artery motion due to respiration by optical flow method. A total of 132 consecutive patients were included in our patient cohort. We apply the optical flow method to compute the motion of the abdominal artery due to respiration. The minimum and maximum displacement of the abdominal artery motion were 0.02 and 30.87 mm by manual delineation, 0.03 and 40.75 mm calculated by optical flow method, respectively. Both high consistency and correlation between the present method and the physicians' manual delineations were acquired with the regression equation of movement, y = 0.81x + 0.25, r = 0.95, p < 0.001. We estimated the motion of abdominal artery due to respiration using the optical flow method in multiphase hepatic CT scans and the motion estimations were validated with the visualization of physicians. The quantitative analysis of respiration-related movement of abdominal artery could be used for motion correction in the measurement of contrast medium passing though abdominal artery in multiphase CT liver scans.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0114222