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Automated septum thickness measurement--a Kalman filter approach.

Abstract：

:Interventricular septum thickness in end-diastole (IVSd) is one of the key parameters in cardiology. This paper presents a fast algorithm, suitable for pocket-sized ultrasound devices, for measurement of IVSd using 2D B-mode parasternal long axis images. The algorithm is based on a deformable model of the septum and the mitral valve. The model shape is estimated using an extended Kalman filter. A feasibility study using 32 unselected recordings is presented. The recordings originate from a database consisting of subjects from a normal healthy population. Five patients with suspected hypertrophy were included in the study. Reference B-mode measurements were made by two cardiologists. A paired t-test revealed a non-significant mean difference, compared to the B-mode reference, of (mean±SD) 0.14±1.36 mm (p=0.532). Pearson's correlation coefficient was 0.79 (p<0.001). The results are comparable to the variability between the two cardiologists, which was found to be 1.29±1.23 mm (p<0.001). The results indicate that the method has potential as a tool for rapid assessment of IVSd.

journal_name

Comput Methods Programs Biomed

journal_title

Computer methods and programs in biomedicine

authors

Snare SR,Mjølstad OC,Orderud F,Dalen H,Torp H

doi

10.1016/j.cmpb.2011.02.011

subject

Has Abstract

pub_date

2012-11-01 00:00:00

pages

477-86

issue

2

eissn

0169-2607

issn

1872-7565

pii

S0169-2607(11)00043-5

journal_volume

108

pub_type

杂志文章

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