scholarly journals Interstudy reproducibility of dark blood high-resolution MRI in evaluating basilar atherosclerotic plaque at 3 Tesla

2018 ◽  
Vol 24 (4) ◽  
pp. 237-242 ◽  
Author(s):  
Luguang Chen ◽  
◽  
Qi Liu ◽  
Zhang Shi ◽  
Xia Tian ◽  
...  
Keyword(s):  
High Resolution ◽  
Atherosclerotic Plaque ◽  
3 Tesla ◽  
Dark Blood ◽  
High Resolution Mri

High-resolution MRI assessed carotid atherosclerotic plaque characteristics comparing men and women with elevated ApoB levels

2020 ◽  
Vol 36 (3) ◽  
pp. 481-489
Author(s):  
Tianwen Han ◽  
Pathmaja Paramsothy ◽  
Jaekyoung Hong ◽  
Daniel Isquith ◽  
Dongxiang Xu ◽  
...  
Keyword(s):  
High Resolution ◽  
Atherosclerotic Plaque ◽  
Carotid Atherosclerotic Plaque ◽  
Men And Women ◽  
High Resolution Mri

High‐resolution magnetic resonance imaging of trabecular bone in the wrist at 3 tesla: initial results

2005 ◽  
Vol 46 (3) ◽  
pp. 306-309 ◽  
Author(s):  
B. Ludescher ◽  
P. Martirosian ◽  
S. Lenk ◽  
J. Machann ◽  
F. Dammann ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Trabecular Bone ◽  
Spatial Resolution ◽  
Bone Structure ◽  
3 Tesla ◽  
Spongy Bone ◽  
Resonance Imaging ◽  
High Resolution Mri

Purpose: To evaluate the feasibility of high‐resolution magnetic resonance imaging (MRI) of trabecular bone of the wrist at 3 Tesla (3T) in vivo and to assess the potential benefit of the increased resolution for clinical assessment of structural changes in spongy bone. Material and Methods: High‐resolution MRI of the wrist was performed with a whole‐body 3T MR scanner using a dedicated circularly polarized transmit–receive wrist‐coil. Two 3D‐FISP sequences with a spatial resolution of 300×300×300 µm3 in a measuring time of TA = 7:51 min, and 200×200×200 µm3 in TA = 9:33 min were applied. Seven young healthy volunteers and three elderly subjects with suspected osteoporosis were examined. The signal‐to‐noise ratio (SNR) in the optimized setup at 3T was compared to measurements at 1.5T. Results: The images at 3T allow microscopic analysis of the bone structure at an isotropic spatial resolution of 200 µm in examination times of <10 min. Differences in the structure of the spongy bone between normal and markedly osteoporotic subjects are well depicted. The SNR at 3T was found up to 16 times higher than at 1.5T applying unchanged imaging parameters. Conclusion: The proposed high‐resolution MRI technique offers high potential in the diagnosis and follow‐up of diseases with impaired bone structure of hand and/or wrist in clinical applications.

scholarly journals Reproducibility of High-Resolution MRI for the Identification and the Quantification of Carotid Atherosclerotic Plaque Components

Stroke ◽  
2007 ◽  
Vol 38 (6) ◽  
pp. 1812-1819 ◽  
Author(s):  
Emmanuel Touzé ◽  
Jean-François Toussaint ◽  
Joël Coste ◽  
Emmanuelle Schmitt ◽  
Fabrice Bonneville ◽  
...  
Keyword(s):  
High Resolution ◽  
Atherosclerotic Plaque ◽  
Carotid Atherosclerotic Plaque ◽  
High Resolution Mri

scholarly journals High-resolution MRI with cardiac and respiratory gating allows for accurate in vivo atherosclerotic plaque visualization in the murine aortic arch

2003 ◽  
Vol 50 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Frank Wiesmann ◽  
Michael Szimtenings ◽  
Alex Frydrychowicz ◽  
Ralf Illinger ◽  
Andreas Hunecke ◽  
...  
Keyword(s):  
High Resolution ◽  
Aortic Arch ◽  
Atherosclerotic Plaque ◽  
Respiratory Gating ◽  
High Resolution Mri

scholarly journals Diagnostic performance in T staging for patients with esophagogastric junction cancer using high-resolution MRI: a comparison with conventional MRI at 3 tesla

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Yuan Yuan ◽  
Luguang Chen ◽  
Shengnan Ren ◽  
Zhen Wang ◽  
Yukun Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
Esophagogastric Junction ◽  
Diagnostic Performance ◽  
Imaging Techniques ◽  
3 Tesla ◽  
Conventional Mri ◽  
Contrast Enhanced ◽  
High Resolution Mri ◽  
Pathologic Staging ◽  
Esophagogastric Junction Cancer

Abstract Background To investigate and compare the diagnostic performance in T staging for patients with esophagogastric junction cancer using high-resolution magnetic resonance imaging (HR MRI), as compared with conventional MRI at 3 Tesla. Methods A total of 118 patients with pathologically confirmed esophagogastric junction cancer were included and underwent multiparameter HR MRI (Cohort 1, 62 patients) or conventional MRI (Cohort 2, 56 patients). T2-weighted, T1-weighted, diffusion-weighted and contrast-enhanced T1-weighted images of each patient were evaluated by two radiologists who determined the preoperative T staging by consensus. Using pathologic staging as the gold standard, the consistency between HR MRI and pathology and between conventional MRI and pathology in T staging was calculated and compared. The overall accuracy, overstatement and understatement of HR MRI and conventional MRI in T staging of patients with esophagogastric junction cancer were computed and compared. Moreover, the diagnostic performance of HR MRI and conventional MRI in T staging (≤ T1 and ≥ T4) of patients with esophagogastric junction cancer were evaluated. Results There were no significant differences in age (p = 0.465) and sex (p = 0.175) between Cohorts 1 and 2. Excellent agreement was observed in the T staging of patients with esophagogastric junction cancer between pathology and HR MRI (kappa = 0.813), while moderate agreement was observed between pathology and conventional MRI (kappa = 0.486). Significant differences were observed in overall accuracy (88.7% vs 64.3%, p = 0.002) and understatement (1.6% vs 26.8%, p < 0.001) but not for overstatement (9.7% vs 8.9%, p = 0.889) in T staging between HR MRI and conventional MRI techniques. For differentiating the T stages of ≤ T1 from ≥ T2 and the T stages of ≤ T3 from ≥ T4, no significant differences were observed between the imaging techniques. Conclusions HR MRI has good diagnostic performance and may serve as an alternative technique in the T staging of patients with esophagogastric junction cancer in clinical practice.

Atherosclerotic plaque pathohistology and classification with high-resolution MRI

2011 ◽  
Vol 33 (3) ◽  
pp. 325-330 ◽  
Author(s):  
Tianli Gao ◽  
Xiaofen He ◽  
Wei Yu ◽  
Zhuo Zhang ◽  
Yongjun Wang
Keyword(s):  
High Resolution ◽  
Atherosclerotic Plaque ◽  
High Resolution Mri

scholarly journals HIGH-RESOLUTION CONTRAST-ENHANCED MRI IN DIFFERENTIAL DIAGNOSIS OF TYPE OF CAROTID PLAQUE AND IT'S RELATIONSHIP TO THE ISCHEMIC BRAIN DAMAGE

2013 ◽  
Vol 12 (3) ◽  
pp. 97-105
Author(s):  
Ye. E. Bobrikova ◽  
V. Yu. Ussov ◽  
N. V. Shcherban ◽  
V. B. Khaneev ◽  
T. A. Shelkovnikova ◽  
...  
Keyword(s):  
High Resolution ◽  
Atherosclerotic Plaque ◽  
Arterial Wall ◽  
Significant Rise ◽  
Cerebral Stroke ◽  
Moderate Increase ◽  
Ischemic Brain ◽  
Atherosclerotic Lesions ◽  
Contrast Enhanced ◽  
High Resolution Mri

Aim of the study. We have compared in patients with carotid atherosclerosis the patterns of contrast enhancement of atherosclerotic plaque with presence of cerebral stroke, by using of high-resolution contrast-enhanced carotid MRI.Material and methods. The patients 'population comprised 26 persons with either monolateral (14 pts) or bilateral (12 pts) stenosis of internal carotid artery for over 70% of lumen. In 15 (10-monolateral, 5 bilateral stenosis) there was recent stroke in acute or subacute stage, whereas 11 were symptom-free. In everybody contrast-enhanced study of atherosclerotic plaque was carried out with T1-w high-resolution MRI (paramagnetic as 2 ml of 0.5 mol solution per 10 kg of BW).Results and discussion. In control persons there was a mild increase in T1-w intensity of arterial wall of carotids? With IE not more than 1.08. In patients without stroke there was moderate increase in plaque T-1w intensity up to 1.14 ± 0.07. In ishaemic stroke patients there was significant rise in intensity of T1-w of homolateral plaque (IE = 1.35 ± 0.06), and also of T1-w of arterial wall as whole (IE = 1.19 ± 0.05).Conclusion. Further detailed study of high-resolution MRI of carotids is worth in order to obtain better imaging of atherosclerotic lesions and also better evaluation of risk of stroke in patients suitable for carotid endarterectomy.

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