scholarly journals Clinical features and brain structural changes in magnetic resonance imaging in Alzheimer’s disease patients with apathy

Aging ◽  
2020 ◽  
Vol 12 (19) ◽  
pp. 19083-19094
Author(s):  
Shu-Yang Yu ◽  
Wan-Lin Zhu ◽  
Peng Guo ◽  
Shao-Wu Li ◽  
Ya-Ou Liu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Features ◽  
Structural Changes ◽  
Resonance Imaging

Magnetic resonance imaging can accurately assess the long-term progression of knee structural changes in experimental dog osteoarthritis

2007 ◽  
Vol 67 (7) ◽  
pp. 926-932 ◽  
Author(s):  
C Boileau ◽  
J Martel-Pelletier ◽  
F Abram ◽  
J-P Raynauld ◽  
E Troncy ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Structural Changes ◽  
Resonance Imaging

Detection of Erosions in Sacroiliac Joints of Patients with Axial Spondyloarthritis Using the Magnetic Resonance Imaging Volumetric Interpolated Breath-hold Examination

2019 ◽  
Vol 46 (11) ◽  
pp. 1445-1449 ◽  
Author(s):  
Xenofon Baraliakos ◽  
Florian Hoffmann ◽  
Xiaohu Deng ◽  
Yan-Yan Wang ◽  
Feng Huang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Structural Changes ◽  
Axial Spondyloarthritis ◽  
Linear Regression Analysis ◽  
Cartilage Defects ◽  
Breath Hold ◽  
Resonance Imaging ◽  
Sacroiliac Joints ◽  
Magnetic Resonance Imaging Mri

Objective.The volumetric interpolated breath-hold examination (VIBE) magnetic resonance imaging (MRI) technique can visualize erosive cartilage defects in peripheral joints. We evaluated the ability of VIBE to detect erosions in sacroiliac joints (SIJ) of patients with axial spondyloarthritis (axSpA) compared to the established T1-weighted MRI sequence and computed tomography (CT).Methods.MRI (T1-weighted and VIBE) and CT scans of SIJ of 109 patients with axSpA were evaluated by 2 blinded readers based on SIJ quadrants (SQ). Erosions were defined according to Assessment of Spondyloarthritis international Society (ASAS) definitions. Scores were recorded if readers were in agreement.Results.Erosions were less frequently detected by CT (153 SQ) than by T1-weighted MRI (182 SQ; p = 0.008) and VIBE-MRI (199 SQ; p < 0.001 vs CT and p = 0.031 vs T1-weighted MRI). Taking CT as the gold standard, the sensitivity of VIBE-MRI (71.2%) was higher than that for T1-weighted MRI (63.4%), with similar specificity (87.3% vs 88%, respectively). In linear regression analysis, younger age was significantly associated with occurrence of erosions independently in VIBE-MRI (β = 0.384, p < 0.001) and T1-weighted MRI (β = 0.369, p < 0.001) compared to CT.Conclusion.The VIBE-MRI sequence was more sensitive than T1-weighted MRI in identifying erosive damage in the SIJ, especially in younger patients. This might be due to the ability of VIBE-MRI to identify structural changes in the cartilage that have not yet extended to the underlying bone, where CT seems to be superior.

Brain structural changes in CADASIL patients: A morphometric magnetic resonance imaging study

2020 ◽  
Vol 738 ◽  
pp. 135388
Author(s):  
Hui Pan ◽  
Qi Huang ◽  
Shiyu Ban ◽  
Xiaoxia Du ◽  
Jingjing Su ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Structural Changes ◽  
Imaging Study ◽  
Magnetic Resonance Imaging Study ◽  
Resonance Imaging

Relationship between structural changes and hyperpolarized gas magnetic resonance imaging in chronic obstructive pulmonary disease using computational simulations with realistic alveolar geometry

2009 ◽  
Vol 367 (1896) ◽  
pp. 2347-2369 ◽  
Author(s):  
Michal Plotkowiak ◽  
Kelly Burrowes ◽  
Jan Wolber ◽  
Christopher Buckley ◽  
Robert Davies ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Lung Function ◽  
Structural Changes ◽  
Image Acquisition ◽  
Chronic Obstructive ◽  
Resonance Imaging ◽  
Apparent Diffusion Coefficients ◽  
Hyperpolarized Gas ◽  
Hyperpolarized Gas Mri

Both the development of accurate models of lung function and their quantitative validation can be significantly enhanced by the use of functional imaging techniques. The advent of hyperpolarized noble gas magnetic resonance imaging (MRI) technology has increased the amount of local, functional information we can obtain from the lung. In particular, application of 3 He to measure apparent diffusion coefficients has enabled some measure of lung microstructure and airspace size within the lung. Models mimicking image acquisition in hyperpolarized gas MRI can improve understanding of the relationship between image findings and lung structure, and can be used to improve the definition of imaging protocols. In this paper, we review the state of the art in hyperpolarized gas MRI modelling. We also present our own results, obtained using a Monte Carlo approach and a realistic alveolar sac geometry, which has previously been applied in functional lung studies. In this way, we demonstrate the potential for models combining lung function and image acquisition, which could provide valuable tools in both basic studies and clinical practice.

Sign in / Sign up

Export Citation Format

Share Document