Gray blood magnetic resonance for carotid wall imaging and visualization of deep-seated and superficial vascular calcifications

2012 ◽  
Vol 70 (1) ◽  
pp. 75-85 ◽  
Author(s):  
Ioannis Koktzoglou
Keyword(s):  
Magnetic Resonance ◽  
Vascular Calcifications ◽  
Carotid Wall ◽  
Wall Imaging

scholarly journals The Use of Imaging Techniques in Chronic Kidney Disease-Mineral and Bone Disorders (CKD-MBD)—A Systematic Review

Diagnostics ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 772
Author(s):  
Ana Pimentel ◽  
Jordi Bover ◽  
Grahame Elder ◽  
Martine Cohen-Solal ◽  
Pablo Antonio Ureña-Torres
Keyword(s):  
Computed Tomography ◽  
Chronic Kidney Disease ◽  
Magnetic Resonance ◽  
Kidney Disease ◽  
Imaging Techniques ◽  
Quantitative Computed Tomography ◽  
Vertebral Fracture Assessment ◽  
Vascular Calcifications ◽  
Ckd Stage

Although frequently silent, mineral and bone disease (MBD) is one of the most precocious complication of chronic kidney disease (CKD) and is omnipresent in patients with CKD stage 5. Its pathophysiology is complex, but basically, disturbances in vitamin D, phosphate, and calcium metabolism lead to a diverse range of clinical manifestations with secondary hyperparathyroidism usually being the most frequent. With the decline in renal function, CKD-MBD may induce microstructural changes in bone, vascular system and soft tissues, which results in macrostructural lesions, such as low bone mineral density (BMD) resulting in skeletal fractures, vascular and soft tissue calcifications. Moreover, low BMD, fractures, and vascular calcifications are linked with increased risk of cardiovascular mortality and all-cause mortality. Therefore, a better characterization of CKD-MBD patterns, beyond biochemical markers, is helpful to adapt therapies and monitor strategies as used in the general population. An in-depth characterization of bone health is required, which includes an evaluation of cortical and trabecular bone structure and density and the degree of bone remodeling through bone biomarkers. Standard radiological imaging is generally used for the diagnosis of fracture or pseudo-fractures, vascular calcifications and other features of CKD-MBD. However, bone fractures can also be diagnosed using computed tomography (CT) scan, magnetic resonance (MR) imaging and vertebral fracture assessment (VFA). Fracture risk can be predicted by bone densitometry using dual-energy X-ray absorptiometry (DXA), quantitative computed tomography (QTC) and peripheral quantitative computed tomography (pQTC), quantitative ultrasound (QUS) and most recently magnetic resonance micro-imaging. Quantitative methods to assess bone consistency and strength complete the study and adjust the clinical management when integrated with clinical factors. The aim of this review is to provide a brief and comprehensive update of imaging techniques available for the diagnosis, prevention, treatment and monitoring of CKD-MBD.

scholarly journals Carotid wall imaging with 3D_T2_FFE: sequence parameter optimization and comparison with 3D_T2_SPACE

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ang Yang ◽  
Xue Hong Xiao ◽  
Zhi Long Wang ◽  
Yong Xin Zhang ◽  
Ke Yi Wang
Keyword(s):  
Cerebellopontine Angle ◽  
Carotid Bifurcation ◽  
Black Blood ◽  
Residual Flow ◽  
Flow Signal ◽  
Good Imaging ◽  
Significant Difference ◽  
Carotid Wall ◽  
Fast Field ◽  
Wall Imaging

AbstractSimilar to sampling perfection with application-optimized contrast using different flip angle evolutions (SPACE), T2-weighted fast field echo (FFE) also has a black blood effect and a high imaging efficiency. The purpose of this study was to optimize 3D_T2_FFE and compare it with 3D_T2_SPACE for carotid imaging. The scanning parameter of 3D_T2_FFE was optimized for the imaging of the carotid wall. Twenty healthy volunteers and 10 patients with carotid plaque underwent cervical 3D_T2_FFE and 3D_T2_SPACE examinations. The signal-to-noise ratios of the carotid wall (SNRwall) and lumen (SNRlumen), and the contrast-to-noise ratios between the wall and lumen (CNRwall_lumen) were compared. The incidence of the residual flow signal at the carotid bifurcation and the grades of flow voids in the cerebellopontine angle region in the two sequences were also compared. The reproducibility of the two sequences was tested. No significant difference was observed between the two sequences in terms of the SNRwall of healthy individuals and patients (P = 0.132 and 0.102, respectively). The SNRlumen in the 3D_T2_FFE images was lower than that in the 3D_T2_SPACE images. No significant difference was observed between the two sequences in terms of the CNRwall-lumen. The incidence of the residual flow signal at the carotid bifurcation in 3D_T2_FFE was significantly lower than that in 3D_T2_SPACE. The grades of flow suppression in the cerebellopontine angle region in 3D_T2_SPACE was lower than that in 3D_T2_FFE. Both sequences showed excellent inter-and intra-observer reproducibility. Compared to 3D_T2_SPACE, 3D_T2_FFE showed stronger flow suppression while maintaining good imaging quality, which can be used as an alternative tool for carotid imaging.

Carotid wall volume quantification from magnetic resonance images using deformable model fitting and learning-based correction of systematic errors

2013 ◽  
Vol 58 (5) ◽  
pp. 1605-1623 ◽  
Author(s):  
K Hameeteman ◽  
R van 't Klooster ◽  
M Selwaness ◽  
A van der Lugt ◽  
J C M Witteman ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Model Fitting ◽  
Systematic Errors ◽  
Magnetic Resonance Images ◽  
Deformable Model ◽  
Carotid Wall

scholarly journals Magnetic Resonance Vessel Wall Imaging in Human Intracranial Aneurysms

Stroke ◽  
2019 ◽  
Vol 50 (1) ◽  
Author(s):  
Joseph S. Hudson ◽  
Mario Zanaty ◽  
Daichi Nakagawa ◽  
David K. Kung ◽  
Pascal Jabbour ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Vessel Wall ◽  
Intracranial Aneurysms ◽  
Vessel Wall Imaging ◽  
Wall Imaging

scholarly journals Carotid Wall Imaging with Routine Brain MRI to Facilitate Early Detection of Carotid Plaque and Intraplaque Hemorrhage

2017 ◽  
Vol 19 (1) ◽  
pp. 107-108 ◽  
Author(s):  
Hyo Sung Kwak ◽  
Hye Jin Yang ◽  
Seung Bae Hwang ◽  
Gyung Ho Chung
Keyword(s):  
Early Detection ◽  
Carotid Plaque ◽  
Brain Mri ◽  
Intraplaque Hemorrhage ◽  
Carotid Wall ◽  
Wall Imaging

scholarly journals High-Resolution Magnetic Resonance Wall Imaging Findings of Moyamoya Disease

Stroke ◽  
2014 ◽  
Vol 45 (8) ◽  
pp. 2457-2460 ◽  
Author(s):  
Sookyung Ryoo ◽  
Jihoon Cha ◽  
Suk Jae Kim ◽  
Jin Wook Choi ◽  
Chang-Seok Ki ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
High Resolution ◽  
Moyamoya Disease ◽  
Imaging Findings ◽  
Wall Imaging

Magnetic resonance vessel wall imaging in intracranial atherosclerotic disease simulating vasculitis

2019 ◽  
Vol 67 (2) ◽  
pp. 588
Author(s):  
PN Sylaja ◽  
K Arun ◽  
Chinmay Nagesh ◽  
C Kesavadas ◽  
SapnaE Sreedharan
Keyword(s):  
Magnetic Resonance ◽  
Vessel Wall ◽  
Vessel Wall Imaging ◽  
Atherosclerotic Disease ◽  
Intracranial Atherosclerotic Disease ◽  
Wall Imaging
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