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Dynamic ventilation 3He MRI for the quantification of disease in the rat lung

Kyriazis, Angelos; Rodriguez, I; Nin, N; Izquierdo-Garcia, J L; Lorente, J A; Perez-Sanchez, J M; Pesic, J; Olsson, L E LU and Ruiz-Cabello, J (2012) In IEEE Transactions on Biomedical Engineering 59(3). p.86-777
Abstract

Pulmonary diseases are known to be largely inhomogeneous. To evaluate such inhomogeneities, we are testing an image-based method to measure gas flow in the lung regionally. Dynamic, spin-density-weighted hyperpolarized (3)He MR images performed during slow inhalation of this gas were analyzed to quantify regional inflation rate. This parameter was measured in regions of interest (ROIs) that were defined by a rectangular grid that covered the entire rat lung and grew dynamically with it during its inflation. We used regional inflation rate to quantify elastase-induced emphysema and to differentiate healthy (n = 8) from elastase-treated (n = 9) rat lungs as well as healthy from elastase-treated areas of one rat unilaterally treated with... (More)

Pulmonary diseases are known to be largely inhomogeneous. To evaluate such inhomogeneities, we are testing an image-based method to measure gas flow in the lung regionally. Dynamic, spin-density-weighted hyperpolarized (3)He MR images performed during slow inhalation of this gas were analyzed to quantify regional inflation rate. This parameter was measured in regions of interest (ROIs) that were defined by a rectangular grid that covered the entire rat lung and grew dynamically with it during its inflation. We used regional inflation rate to quantify elastase-induced emphysema and to differentiate healthy (n = 8) from elastase-treated (n = 9) rat lungs as well as healthy from elastase-treated areas of one rat unilaterally treated with elastase in the left lung. Emphysema was also assessed by gold standard morphological and well-established hyperpolarized (3)He MRI diffusion measurements. Mean values of regional inflation rates were significantly different for healthy and elastase-treated animals and correlated well with the apparent diffusion coefficient of (3)He and morphological measurements. The image-based biomarker inflation rate may be useful for the assessment of regional lung ventilation.

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Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
keywords
Animals, Diffusion Magnetic Resonance Imaging, Disease Models, Animal, Female, Helium, Isotopes, Pancreatic Elastase, Pulmonary Emphysema, Rats, Rats, Wistar, Sensitivity and Specificity
in
IEEE Transactions on Biomedical Engineering
volume
59
issue
3
pages
10 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • Scopus:84857617004
ISSN
0018-9294
DOI
10.1109/TBME.2011.2179299
language
English
LU publication?
no
id
92cfac47-effa-4216-85c1-43d447f9da99
date added to LUP
2016-08-16 12:08:39
date last changed
2016-10-13 05:12:14
@misc{92cfac47-effa-4216-85c1-43d447f9da99,
  abstract     = {<p>Pulmonary diseases are known to be largely inhomogeneous. To evaluate such inhomogeneities, we are testing an image-based method to measure gas flow in the lung regionally. Dynamic, spin-density-weighted hyperpolarized (3)He MR images performed during slow inhalation of this gas were analyzed to quantify regional inflation rate. This parameter was measured in regions of interest (ROIs) that were defined by a rectangular grid that covered the entire rat lung and grew dynamically with it during its inflation. We used regional inflation rate to quantify elastase-induced emphysema and to differentiate healthy (n = 8) from elastase-treated (n = 9) rat lungs as well as healthy from elastase-treated areas of one rat unilaterally treated with elastase in the left lung. Emphysema was also assessed by gold standard morphological and well-established hyperpolarized (3)He MRI diffusion measurements. Mean values of regional inflation rates were significantly different for healthy and elastase-treated animals and correlated well with the apparent diffusion coefficient of (3)He and morphological measurements. The image-based biomarker inflation rate may be useful for the assessment of regional lung ventilation.</p>},
  author       = {Kyriazis, Angelos and Rodriguez, I and Nin, N and Izquierdo-Garcia, J L and Lorente, J A and Perez-Sanchez, J M and Pesic, J and Olsson, L E and Ruiz-Cabello, J},
  issn         = {0018-9294},
  keyword      = {Animals,Diffusion Magnetic Resonance Imaging,Disease Models, Animal,Female,Helium,Isotopes,Pancreatic Elastase,Pulmonary Emphysema,Rats,Rats, Wistar,Sensitivity and Specificity},
  language     = {eng},
  number       = {3},
  pages        = {86--777},
  publisher    = {ARRAY(0x9c4e048)},
  series       = {IEEE Transactions on Biomedical Engineering},
  title        = {Dynamic ventilation 3He MRI for the quantification of disease in the rat lung},
  url          = {http://dx.doi.org/10.1109/TBME.2011.2179299},
  volume       = {59},
  year         = {2012},
}