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2016 ; 6
(ä): 33075
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Acoustic structure quantification by using ultrasound Nakagami imaging for
assessing liver fibrosis
#MMPMID27605260
Tsui PH
; Ho MC
; Tai DI
; Lin YH
; Wang CY
; Ma HY
Sci Rep
2016[Sep]; 6
(ä): 33075
PMID27605260
show ga
Acoustic structure quantification (ASQ) is a recently developed technique widely
used for detecting liver fibrosis. Ultrasound Nakagami parametric imaging based
on the Nakagami distribution has been widely used to model echo amplitude
distribution for tissue characterization. We explored the feasibility of using
ultrasound Nakagami imaging as a model-based ASQ technique for assessing liver
fibrosis. Standard ultrasound examinations were performed on 19 healthy
volunteers and 91 patients with chronic hepatitis B and C (n?=?110). Liver biopsy
and ultrasound Nakagami imaging analysis were conducted to compare the METAVIR
score and Nakagami parameter. The diagnostic value of ultrasound Nakagami imaging
was evaluated using receiver operating characteristic (ROC) curves. The Nakagami
parameter obtained through ultrasound Nakagami imaging decreased with an increase
in the METAVIR score (p?0.0001), representing an increase in the extent of
pre-Rayleigh statistics for echo amplitude distribution. The area under the ROC
curve (AUROC) was 0.88 for the diagnosis of any degree of fibrosis (?F1), whereas
it was 0.84, 0.69, and 0.67 for ?F2, ?F3, and ?F4, respectively. Ultrasound
Nakagami imaging is a model-based ASQ technique that can be beneficial for the
clinical diagnosis of early liver fibrosis.