scholarly journals Optimized Inner-Volume 3D TSE for High-Resolution Vessel Wall Imaging of Intracranial Perforating Arteries at 7T

2021 ◽  
Vol 15 ◽  
Author(s):  
Qingle Kong ◽  
Yue Wu ◽  
Dehe Weng ◽  
Jing An ◽  
Yan Zhuo ◽  
...  
Keyword(s):  
High Resolution ◽  
Trajectory Optimization ◽  
Vessel Wall ◽  
Imaging Techniques ◽  
Black Blood ◽  
Rf Pulses ◽  
Space Sequence ◽  
Space Images ◽  
Rf Pulse ◽  
Perforating Arteries

The impairment of microvessels can lead to neurologic diseases such as stroke and vascular dementia. The imaging of lumen and vessel wall of perforating arteries requires an extremely high resolution due to their small caliber size. Current imaging techniques have the difficulty in observing the wall of perforating arteries. In this study, we developed a 3D inner-volume (IV) TSE (SPACE) sequence with optimized 2D spatially selective excitation (SSE) RF pulses. The optimized SSE RF pulses were designed through a series of optimization including iterative RF pulse design, trajectory optimization, and phase convention of Carr-Purcell-Meiboom-Gill (CPMG) condition to meet the perforating arteries imaging demands. High resolution of isotropic 0.30 mm within 10 min was achieved for the black- blood images of lenticulostriate artery (LSA). The LSA lumen and vessel wall were imaged by the IV-SPACE sequence simultaneously. Images obtained by the optimized RF pulse has fewer aliasing artifacts from outside of ROI than the traditional pulse. The IV-SPACE images showed clearer delineation of vessel wall and lumen of LSA than conventional SPACE images. IV-SPACE might be a promising method for detecting microvasculopathies of cerebral vascular diseases.

scholarly journals High-Resolution Black-Blood MRI of the Carotid Vessel Wall Using Phased-Array Coils at 1.5 and 3 Tesla1

2005 ◽  
Vol 12 (12) ◽  
pp. 1521-1526 ◽  
Author(s):  
SeshaSailaja Anumula ◽  
Hee Kwon Song ◽  
Alexander C. Wright ◽  
Felix W. Wehrli
Keyword(s):  
High Resolution ◽  
Vessel Wall ◽  
Phased Array ◽  
Black Blood ◽  
Black Blood Mri ◽  
Carotid Vessel Wall ◽  
Phased Array Coils ◽  
Array Coils ◽  
Carotid Vessel

scholarly journals Evaluation of a dedicated dual phased-array surface coil using a black-blood FSE sequence for high resolution MRI of the carotid vessel wall

2002 ◽  
Vol 15 (3) ◽  
pp. 344-351 ◽  
Author(s):  
Mohamed Ouhlous ◽  
Franck Lethimonnier ◽  
Diederik W.J. Dippel ◽  
Marc R.H.M. van Sambeek ◽  
Lambertus C.J. van Heerebeek ◽  
...  
Keyword(s):  
High Resolution ◽  
Vessel Wall ◽  
Phased Array ◽  
Surface Coil ◽  
Black Blood ◽  
High Resolution Mri ◽  
Carotid Vessel Wall ◽  
Carotid Vessel

scholarly journals Ultra-high resolution, 3-dimensional magnetic resonance imaging of the atherosclerotic vessel wall at clinical 7T

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0241779
Author(s):  
Martin J. Willemink ◽  
Bram F. Coolen ◽  
Hadrien Dyvorne ◽  
Philip M. Robson ◽  
Ilda Bander ◽  
...  
Keyword(s):  
High Resolution ◽  
Image Quality ◽  
Spatial Resolution ◽  
Vessel Wall ◽  
High Field ◽  
High Spatial Resolution ◽  
Black Blood ◽  
Lower Field ◽  
Plaque Area ◽  
Field Strengths

Accurate quantification and characterization of atherosclerotic plaques with MRI requires high spatial resolution acquisitions with excellent image quality. The intrinsically better signal-to-noise ratio (SNR) at high-field clinical 7T compared to the widely employed lower field strengths of 1.5 and 3T may yield significant improvements to vascular MRI. However, 7T atherosclerosis imaging also presents specific challenges, related to local transmit coils and B1 field inhomogeneities, which may overshadow these theoretical gains. We present the development and evaluation of 3D, black-blood, ultra-high resolution vascular MRI on clinical high-field 7T in comparison lower-field 3T. These protocols were applied for in vivo imaging of atherosclerotic rabbits, which are often used for development, testing, and validation of translatable cardiovascular MR protocols. Eight atherosclerotic New Zealand White rabbits were imaged on clinical 7T and 3T MRI scanners using 3D, isotropic, high (0.63 mm3) and ultra-high (0.43 mm3) spatial resolution, black-blood MR sequences with extensive spatial coverage. Following imaging, rabbits were sacrificed for validation using fluorescence imaging and histology. Image quality parameters such as SNR and contrast-to-noise ratio (CNR), as well as morphological and functional plaque measurements (plaque area and permeability) were evaluated at both field strengths. Using the same or comparable imaging parameters, SNR and CNR were in general higher at 7T compared to 3T, with a median (interquartiles) SNR gain of +40.3 (35.3–80.1)%, and a median CNR gain of +68.1 (38.5–95.2)%. Morphological and functional parameters, such as vessel wall area and permeability, were reliably acquired at 7T and correlated significantly with corresponding, widely validated 3T vessel wall MRI measurements. In conclusion, we successfully developed 3D, black-blood, ultra-high spatial resolution vessel wall MRI protocols on a 7T clinical scanner. 7T imaging was in general superior to 3T with respect to image quality, and comparable in terms of plaque area and permeability measurements.

Comparison of carotid vessel wall area measurements using three different contrast-weighted black blood MR imaging techniques

2001 ◽  
Vol 19 (6) ◽  
pp. 795-802 ◽  
Author(s):  
Shaoxiong Zhang ◽  
Thomas S Hatsukami ◽  
Nayak L Polissar ◽  
Chao Han ◽  
Chun Yuan
Keyword(s):  
Mr Imaging ◽  
Vessel Wall ◽  
Imaging Techniques ◽  
Black Blood ◽  
Wall Area ◽  
Vessel Wall Area ◽  
Carotid Vessel Wall ◽  
Carotid Vessel

Hyperecho PROPELLER-MRI: Application to rapid high-resolution motion-insensitiveT2-weighted black-blood imaging of the carotid arterial vessel wall and plaque

2016 ◽  
Vol 45 (2) ◽  
pp. 515-524 ◽  
Author(s):  
Masami Yoneyama ◽  
Masanobu Nakamura ◽  
Makoto Obara ◽  
Tomoyuki Okuaki ◽  
Ryuji Sashi ◽  
...  
Keyword(s):  
High Resolution ◽  
Vessel Wall ◽  
Black Blood ◽  
Arterial Vessel ◽  
Black Blood Imaging ◽  
Blood Imaging ◽  
Carotid Arterial

scholarly journals In vivo differentiation of two vessel wall layers in lower extremity peripheral vein bypass grafts: Application of high-resolution inner-volume black blood 3D FSE

2009 ◽  
Vol 62 (3) ◽  
pp. 607-615 ◽  
Author(s):  
Dimitris Mitsouras ◽  
Christopher D. Owens ◽  
Michael S. Conte ◽  
Hale Ersoy ◽  
Mark A. Creager ◽  
...  
Keyword(s):  
High Resolution ◽  
Lower Extremity ◽  
Vessel Wall ◽  
Black Blood ◽  
Bypass Grafts ◽  
Peripheral Vein ◽  
Vein Bypass ◽  
In Vivo Differentiation

scholarly journals High-Resolution Black Blood Vessel Wall Imaging in COVID-19 Encephalopathy—Is it Really Endotheliitis?

2021 ◽  
Author(s):  
Konstanze V. Guggenberger ◽  
Thorsten A. Bley ◽  
Marius L. Vogt ◽  
Horst Urbach ◽  
Stephan Meckel
Keyword(s):  
High Resolution ◽  
Blood Vessel ◽  
Vessel Wall ◽  
Vessel Wall Imaging ◽  
Black Blood ◽  
Blood Vessel Wall ◽  
Wall Imaging
Sign in / Sign up

Export Citation Format

Share Document