Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Martin H. Deppe"'
Autor:
Ho-Fung Chan, Madhwesha Rao, Nicola De Zanche, Fraser Robb, Guilhem Collier, Martin H. Deppe, Jim M. Wild, Claudio Puddu, Adam Maunder, Xiaojun Xu
Publikováno v:
Magnetic Resonance in Medicine. 86:3373-3381
Purpose This study describes the development and testing of an asymmetrical xenon-129 (129Xe) birdcage radiofrequency (RF) coil for 129Xe lung ventilation imaging at 1.5 Tesla, which allows proton (1H) system body coil transmit–receive functionalit
Autor:
Terhi Tuokkola, Sami Suilamo, Reko Kemppainen, Jani Keyriläinen, Martin H. Deppe, Paula Lindholm
Background: The clinical feasibility of using pseudo-computed tomography (pCT) images derived from magnetic resonance (MR) images for external bean radiation therapy (EBRT) planning for prostate cancer patients has been well demonstrated. This paper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::264b39d6666d4171b68501dd45d9fab8
Publikováno v:
NMR in Biomedicine. 25:389-399
In hyperpolarised 3He lung MRI with constant flip angles, the transverse magnetisation decays with each RF excitation imposing a k-space filter on the acquired data. For radial data acquired in an angularly-sequential order, this filter causes streak
Autor:
Helen Marshall, Jim M. Wild, Salma Ajraoui, Juan Parra-Robles, Martin H. Deppe, Matthew Clemence
Publikováno v:
NMR in Biomedicine. 25:44-51
In imaging of human lungs with hyperpolarised noble gases, measurements of apparent diffusion coefficient (ADC) and relaxation time provide valuable information for the assessment of lung microstructure. In this work, a sequence was developed for int
Autor:
Jim M. Wild, Martin A. Janich, Martin H. Deppe, Florian Wiesinger, Markus Schwaiger, Laura Sacolick, Rolf F. Schulte
Publikováno v:
NMR in Biomedicine. 24:1068-1072
Transmit gain (B 1+) calibration is necessary for the adjustment of radiofrequency (RF) power levels to the desired flip angles. In proton MRI, this is generally an automated process before the actual scan without any user interaction. For other nucl
Publikováno v:
Magnetic Resonance in Medicine. 65:1075-1083
Washout of inert gases is a measure of pulmonary function well-known in lung physiology. This work presents a method combining inert gas washout and spatially resolved imaging using hyperpolarized 3He, thus providing complementary information on lung
Autor:
Salma Ajraoui, Helen Marshall, Jim M. Wild, Martin H. Deppe, Juan Parra-Robles, Rob H. Ireland, S. R. Parnell
Publikováno v:
NMR in Biomedicine. 24:130-134
The development of hybrid medical imaging scanners has allowed imaging with different detection modalities at the same time, providing different anatomical and functional information within the same physiological time course with the patient in the s
Publikováno v:
Journal of Magnetic Resonance. 204:228-238
Models of lung acinar geometry have been proposed to analytically describe the diffusion of (3)He in the lung (as measured with pulsed gradient spin echo (PGSE) methods) as a possible means of characterizing lung microstructure from measurement of th
Publikováno v:
Magnetic Resonance in Medicine. 63:1059-1069
In this work, the application of compressed sensing techniques to the acquisition and reconstruction of hyperpolarized (3)He lung MR images was investigated. The sparsity of (3)He lung images in the wavelet domain was investigated through simulations
Publikováno v:
Journal of applied physiology (Bethesda, Md. : 1985). 116(2)
Multiple-breath washout hyperpolarized3He MRI was used to calculate regional parametric images of fractional ventilation ( r) as the ratio of fresh gas entering a volume unit to the total end inspiratory volume of the unit. Using a single dose of inh