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2015 ; 260
(2
): 180-93
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A Model-based approach for microvasculature structure distortion correction in
two-photon fluorescence microscopy images
#MMPMID26224257
Dao L
; Glancy B
; Lucotte B
; Chang LC
; Balaban RS
; Hsu LY
J Microsc
2015[Nov]; 260
(2
): 180-93
PMID26224257
show ga
This paper investigates a postprocessing approach to correct spatial distortion
in two-photon fluorescence microscopy images for vascular network reconstruction.
It is aimed at in vivo imaging of large field-of-view, deep-tissue studies of
vascular structures. Based on simple geometric modelling of the
object-of-interest, a distortion function is directly estimated from the image
volume by deconvolution analysis. Such distortion function is then applied to
subvolumes of the image stack to adaptively adjust for spatially varying
distortion and reduce the image blurring through blind deconvolution. The
proposed technique was first evaluated in phantom imaging of fluorescent
microspheres that are comparable in size to the underlying capillary vascular
structures. The effectiveness of restoring three-dimensional (3D) spherical
geometry of the microspheres using the estimated distortion function was compared
with empirically measured point-spread function. Next, the proposed approach was
applied to in vivo vascular imaging of mouse skeletal muscle to reduce the image
distortion of the capillary structures. We show that the proposed method
effectively improve the image quality and reduce spatially varying distortion
that occurs in large field-of-view deep-tissue vascular dataset. The proposed
method will help in qualitative interpretation and quantitative analysis of
vascular structures from fluorescence microscopy images.