Non-contrast-enhanced MR-angiography (MRA) of lower extremity peripheral arterial disease at 3 tesla: Examination time and diagnostic performance of 2D quiescent-interval single-shot MRA vs. 3D fast spin-Echo MRA

2021 ◽  
Vol 76 ◽  
pp. 17-25
Author(s):  
Gesine Knobloch ◽  
Marie-Teres Lauff ◽  
Moritz Hanke ◽  
Carsten Schwenke ◽  
Bernd Hamm ◽  
...  
Keyword(s):  
Mr Angiography ◽  
Diagnostic Performance ◽  
Spin Echo ◽  
Arterial Disease ◽  
Fast Spin Echo ◽  
Single Shot ◽  
Contrast Enhanced ◽  
Examination Time ◽  
Peripheral Arterial ◽  
Fast Spin

scholarly journals Contrast-Enhanced Magnetic Resonance Cholangiography: Practical Tips and Clinical Indications for Biliary Disease Management

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Stefano Palmucci ◽  
Federica Roccasalva ◽  
Marina Piccoli ◽  
Giovanni Fuccio Sanzà ◽  
Pietro Valerio Foti ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Spin Echo ◽  
Biliary Tree ◽  
Magnetic Resonance Cholangiography ◽  
Fast Spin Echo ◽  
Single Shot ◽  
Biliary Disease ◽  
Thin Sections ◽  
Contrast Enhanced ◽  
Fast Spin

Since its introduction, MRCP has been improved over the years due to the introduction of several technical advances and innovations. It consists of a noninvasive method for biliary tree representation, based on heavily T2-weighted images. Conventionally, its protocol includes two-dimensional single-shot fast spin-echo images, acquired with thin sections or with multiple thick slabs. In recent years, three-dimensional T2-weighted fast-recovery fast spin-echo images have been added to the conventional protocol, increasing the possibility of biliary anatomy demonstration and leading to a significant benefit over conventional 2D imaging. A significant innovation has been reached with the introduction of hepatobiliary contrasts, represented by gadoxetic acid and gadobenate dimeglumine: they are excreted into the bile canaliculi, allowing the opacification of the biliary tree. Recently, 3D interpolated T1-weighted spoiled gradient echo images have been proposed for the evaluation of the biliary tree, obtaining images after hepatobiliary contrast agent administration. Thus, the acquisition of these excretory phases improves the diagnostic capability of conventional MRCP—based on T2 acquisitions. In this paper, technical features of contrast-enhanced magnetic resonance cholangiography are briefly discussed; main diagnostic tips of hepatobiliary phase are showed, emphasizing the benefit of enhanced cholangiography in comparison with conventional MRCP.

scholarly journals Non-contrast-enhanced MR angiography using 3D ECG-synchronized half-Fourier fast spin echo

2000 ◽  
Vol 12 (5) ◽  
pp. 776-783 ◽  
Author(s):  
Mitsue Miyazaki ◽  
Satoshi Sugiura ◽  
Fumiaki Tateishi ◽  
Hirofumi Wada ◽  
Yoshimori Kassai ◽  
...  
Keyword(s):  
Mr Angiography ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Contrast Enhanced ◽  
Fast Spin

scholarly journals Improvement of the Diagnostic Performance of Facial Neuritis Using Contrast-Enhanced 3D T1 Black-Blood Imaging: Comparison with Contrast-Enhanced 3D T1-Spoiled Gradient-Echo Imaging

2021 ◽  
Vol 10 (9) ◽  
pp. 1850
Author(s):  
Seun-Ah Lee ◽  
Sang-Won Jo ◽  
Suk-Ki Chang ◽  
Ki-Han Kwon
Keyword(s):  
Quantitative Analysis ◽  
Diagnostic Performance ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Black Blood ◽  
Gradient Echo ◽  
Diagnostic Confidence ◽  
Contrast Enhanced ◽  
Black Blood Imaging ◽  
Spoiled Gradient Echo

This study aims to investigate the diagnostic ability of the contrast-enhanced 3D T1 black-blood fast spin-echo (T1 BB-FSE) sequence compared with the contrast-enhanced 3D T1-spoiled gradient-echo (CE-GRE) sequence in patients with facial neuritis. Forty-five patients with facial neuritis who underwent temporal bone MR imaging, including T1 BB-FSE and CE-GRE imaging, were examined. Two reviewers independently assessed the T1 BB-FSE and CE-GRE images in terms of diagnostic performance, and qualitative (diagnostic confidence and visual asymmetric enhancement) and quantitative analysis (contrast-enhancing lesion extent of the canalicular segment of the affected facial nerve (LEC) and the affected side-to-normal signal intensity ratio (rSI)). The AUCs of each reviewer, and the sensitivity and accuracy of T1 BB-FSE were significantly superior to those of CE-GRE (p < 0.05). Regarding diagnostic confidence and visual asymmetric enhancement, T1 BB-FSE tended to be rated greater than CE-GRE (p < 0.05). Additionally, in quantitative analysis, LEC and rSI of the canalicular segment on T1 BB-FSE were larger than those on CE-GRE (p < 0.05). The T1 BB-FSE sequence was significantly superior to the CE-GRE sequence, with more conspicuous lesion visualization in terms of both qualitative and quantitative aspects in patients with facial neuritis.

MRI screening for acoustic neuroma: a comparison of fast spin echo and contrast enhanced imaging in 1233 patients.

2000 ◽  
Vol 73 (867) ◽  
pp. 242-247 ◽  
Author(s):  
I A Zealley ◽  
R C Cooper ◽  
K M Clifford ◽  
R S Campbell ◽  
A J Potterton ◽  
...  
Keyword(s):  
Acoustic Neuroma ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Contrast Enhanced ◽  
Fast Spin ◽  
Enhanced Imaging
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