Hyperpolarized 3He magnetic resonance functional imaging semiautomated segmentation

M Kirby, M Heydarian, S Svenningsen, A Wheatley… - Academic radiology, 2012 - Elsevier
RATIONALE AND OBJECTIVES: To improve intra-and interobserver variability and enable
the use of functional magnetic resonance imaging (MRI) for multicenter, multiobserver …

Ventilation‐based segmentation of the lungs using hyperpolarized 3He MRI

NJ Tustison, BB Avants, L Flors, TA Altes… - Journal of magnetic …, 2011 - Wiley Online Library
Purpose: To develop an automated segmentation method to differentiate the ventilated lung
volume on 3He magnetic resonance imaging (MRI). Materials and Methods: Computational …

Hyperpolarized 3He magnetic resonance imaging: comparison with four-dimensional x-ray computed tomography imaging in lung cancer

L Mathew, A Wheatley, R Castillo, E Castillo… - Academic radiology, 2012 - Elsevier
RATIONALE AND OBJECTIVES: Pulmonary functional imaging using four-dimensional x-ray
computed tomographic (4DCT) imaging and hyperpolarized 3He magnetic resonance …

Spatial fuzzy c‐means thresholding for semiautomated calculation of percentage lung ventilated volume from hyperpolarized gas and 1H MRI

PJC Hughes, FC Horn, GJ Collier… - Journal of Magnetic …, 2018 - Wiley Online Library
Purpose To develop an image‐processing pipeline for semiautomated (SA) and
reproducible analysis of hyperpolarized gas lung ventilation and proton anatomical …

The difference in ventilation heterogeneity between asthmatic and healthy subjects quantified using hyperpolarized 3He MRI

YS Tzeng, K Lutchen, M Albert - Journal of applied …, 2009 - journals.physiology.org
In this pilot study, algorithms for quantitatively evaluating the distribution and heterogeneity
of human ventilation imaged with hyperpolarized (HP) 3He MRI were developed for the goal …

Merging parametric active contours within homogeneous image regions for MRI-based lung segmentation

N Ray, ST Acton, T Altes, EE De Lange… - IEEE transactions on …, 2003 - ieeexplore.ieee.org
Inhaled hyperpolarized helium-3 (/sup 3/He) gas is a new magnetic resonance (MR)
contrast agent that is being used to study lung functionality. To evaluate the total lung …

Extending semiautomatic ventilation defect analysis for hyperpolarized 129Xe ventilation MRI

M He, SS Kaushik, SH Robertson, MS Freeman… - Academic radiology, 2014 - Elsevier
Rationale and Objectives Clinical deployment of hyperpolarized 129 Xe magnetic
resonance imaging requires accurate quantification and visualization of the ventilation …

Evaluation of asthma with hyperpolarized helium-3 MRI: correlation with clinical severity and spirometry

EE de Lange, TA Altes, JT Patrie, JD Gaare, JJ Knake… - Chest, 2006 - Elsevier
Background Accurate characterization of asthma severity is difficult due to the variability of
symptoms. Hyperpolarized helium-3 MRI (H 3 HeMR) is a new technique in which the …

Hyperpolarized 3He magnetic resonance imaging of ventilation defects in healthy elderly volunteers: initial findings at 3.0 Tesla

G Parraga, L Mathew, R Etemad-Rezai… - Academic radiology, 2008 - Elsevier
RATIONALE AND OBJECTIVES: Hyperpolarized 3He magnetic resonance imaging
ventilation defects have been observed in subjects with respiratory disorders. We quantified …

Imaging of lung function using hyperpolarized helium‐3 magnetic resonance imaging: review of current and emerging translational methods and applications

S Fain, ML Schiebler, DG McCormack… - Journal of magnetic …, 2010 - Wiley Online Library
During the past several years there has been extensive development and application of
hyperpolarized helium‐3 (HP 3He) magnetic resonance imaging (MRI) in clinical respiratory …