Diffusion-weighted MRI, dynamic susceptibility contrast MRI and ultrasound perfusion quantification of denervated muscle in rabbits

2011 ◽  
Vol 41 (1) ◽  
pp. 33-40 ◽  
Author(s):  
G. Goyault ◽  
G. Bierry ◽  
N. Holl ◽  
B. Lhermitte ◽  
J. L. Dietemann ◽  
...  
Keyword(s):  
Dynamic Susceptibility ◽  
Diffusion Weighted Mri ◽  
Dynamic Susceptibility Contrast ◽  
Denervated Muscle ◽  
Diffusion Weighted ◽  
Dynamic Susceptibility Contrast Mri ◽  
Susceptibility Contrast ◽  
Perfusion Quantification

scholarly journals Detailed magnetic resonance imaging features of a case series of primary gliosarcoma

2017 ◽  
Vol 30 (6) ◽  
pp. 546-553 ◽  
Author(s):  
Luísa Sampaio ◽  
Paulo Linhares ◽  
José Fonseca
Keyword(s):  
Magnetic Resonance Imaging ◽  
Diffusion Weighted Imaging ◽  
Case Series ◽  
Dynamic Susceptibility ◽  
Resonance Imaging ◽  
Dynamic Susceptibility Contrast ◽  
Diffusion Weighted ◽  
Dynamic Susceptibility Contrast Mri ◽  
Susceptibility Contrast ◽  
Mri Study

Objective We aimed to characterise the magnetic resonance imaging (MRI) features of a case series of primary gliosarcoma, with the inclusion of diffusion-weighted imaging and perfusion imaging with dynamic susceptibility contrast MRI. Materials and methods We conducted a retrospective study of cases of primary gliosarcoma from the Pathology Department database from January 2006 to December 2014. Clinical and demographic data were obtained. Two neuroradiologists, blinded to diagnosis, assessed tumour location, signal intensity in T1 and T2-weighted images, pattern of enhancement, diffusion-weighted imaging and dynamic susceptibility contrast MRI studies on preoperative MRI. Results Seventeen patients with primary gliosarcomas had preoperative MRI study: seven men and 10 women, with a mean age of 59 years (range 27–74). All lesions were well demarcated, supratentorial and solitary (frontal n = 5, temporal n = 4, parietal n = 3); 13 tumours abutted the dural surface (8/13 with dural enhancement); T1 and T2-weighted imaging patterns were heterogeneous and the majority of lesions (12/17) showed a rim-like enhancement pattern with focal nodularities/irregular thickness. Restricted diffusion (mean apparent diffusion coefficient values 0.64 × 10–3 mm2/s) in the more solid/thick components was present in eight out of 11 patients with diffusion-weighted imaging study. Dynamic susceptibility contrast MRI study ( n = 8) consistently showed hyperperfusion in non-necrotic/cystic components on relative cerebral volume maps. Conclusions The main distinguishing features of primary gliosarcoma are supratentorial and peripheral location, well-defined boundaries and a rim-like pattern of enhancement with an irregular thick wall. Diffusion-weighted imaging and relative cerebral volume map analysis paralleled primary gliosarcoma with high-grade gliomas, thus proving helpful in differential diagnosis.

scholarly journals Pseudo-extravasation rate constant of dynamic susceptibility contrast-MRI determined from pharmacokinetic first principles

2017 ◽  
Vol 30 (11) ◽  
pp. e3797
Author(s):  
Xin Li ◽  
Csanad G. Varallyay ◽  
Seymur Gahramanov ◽  
Rongwei Fu ◽  
William D. Rooney ◽  
...  
Keyword(s):  
Rate Constant ◽  
First Principles ◽  
Dynamic Susceptibility ◽  
Dynamic Susceptibility Contrast ◽  
Dynamic Susceptibility Contrast Mri ◽  
Susceptibility Contrast
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