Ultrashort echo time time‐spatial labeling inversion pulse magnetic resonance angiography with denoising deep learning reconstruction for the assessment of abdominal visceral arteries

2020 ◽  
Author(s):  
Ryuichi Mori ◽  
Yoshimori Kassai ◽  
Atsuro Masuda ◽  
Yoshiaki Morita ◽  
Tomoyoshi Kimura ◽  
...  
Keyword(s):  
Deep Learning ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Inversion Pulse ◽  
Ultrashort Echo Time ◽  
Visceral Arteries ◽  
Echo Time

scholarly journals Three tesla magnetic resonance angiography with ultrashort echo time describes the arteries near the cerebral aneurysm with clip and the peripheral cerebral arteries

2020 ◽  
Vol 11 ◽  
pp. 224 ◽  
Author(s):  
Masahito Katsuki ◽  
Norio Narita ◽  
Dan Ozaki ◽  
Yoshimichi Sato ◽  
Saki Iwata ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Cerebral Aneurysm ◽  
Cerebral Vasospasm ◽  
Cerebral Arteries ◽  
Main Trunk ◽  
Ultrashort Echo Time ◽  
Invasive Method ◽  
Echo Time ◽  
Enhanced Computed Tomography

Background: The assessment of the clipped cerebral aneurysm and the cerebral arteries after the treatment of subarachnoid hemorrhage (SAH) is important to find aneurysm regrowth or postoperative cerebral vasospasm. Usually, contrast-enhanced computed tomography angiography is performed for the evaluation of the arteries, but it has side effects of contrast medium. Time-of-flight magnetic resonance angiography (MRA) is a fast and non-invasive method, but clip-induced artifact limits assessment of the artery in the vicinity of the clip. 1.5T MRA with ultrashort echo time (UTE) reduces metal artifact, but the obtained image is too rough to evaluate the aneurysm remnant, and the description range is too narrow to assess the cerebral vasospasm. We routinely use SIGNA Pioneer 3.0T (GE Healthcare Life Sciences, Buckinghamshire, England) and perform SILENT SCAN with UTE-MRA for the postoperative assessment of the clipped aneurysm and cerebral arteries for SAH patients treated by clipping. It has better image quality and describes arteries with a wide description range, so it possesses the potential to overcome the disadvantages of 1.5T UTE-MRA. Case Description: We presented a representative SAH patient who postoperatively underwent 3.0T UTE- MRA after clipping. The artery near the clipped aneurysm was evaluated in detail, and the cerebral arteries were described from the main trunk to the peripheral parts with a wide description range, which enabled the assessment of cerebral vasospasm. Conclusion: 3.0T UTE-MRA may be helpful for the usual assessment of the arteries after clipping and cerebral vasospasm in the future.

scholarly journals Magnetic resonance angiography with ultrashort echo time evaluates cerebral aneurysm with clip

2020 ◽  
Vol 11 ◽  
pp. 65 ◽  
Author(s):  
Masahito Katsuki ◽  
Yukinari Kakizawa ◽  
Yasunaga Yamamoto ◽  
Akihiro Nishikawa ◽  
Naomichi Wada ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Cerebral Aneurysm ◽  
Fast Method ◽  
Ultrashort Echo Time ◽  
Non Invasive ◽  
Contrast Enhanced ◽  
Echo Time ◽  
Enhanced Computed Tomography

Contrast-enhanced computed tomography angiography is usually valuable for the evaluation of clipped cerebral aneurysm, but it has side effects of contrast medium. Time-of-flight magnetic resonance angiography (MRA) is a non-invasive and fast method. However, clip-induced artifact limits assessment of the artery in the vicinity of a clip. MRA with ultrashort echo time (TE) reduces metal artifact. We use MAGNETOM Aera 1.5T (SIEMENS, München, Germany) and perform pointwise encoding time reduction with radial acquisition (PETRA)-MRA using ultrashort TE for the assessment of the cerebral aneurysm after clipping. We, herein, presented two representative cases with a clipped aneurysm which could be evaluated by PETRA- MRA. Especially in one of them, the neck remnant was revealed by PETRA-MRA. PETRA-MRA can reduce the time and the invasiveness and may be helpful for the usual follow-up of the clipped aneurysm with the development of MRA technology in the future.

Time spatial labeling inversion pulse magnetic resonance angiography in pregnancy with adenomyosis

2013 ◽  
Vol 39 (10) ◽  
pp. 1480-1483 ◽  
Author(s):  
Takashi Yorifuji ◽  
Shintaro Makino ◽  
Yuka Yamamoto ◽  
Motoi Sugimura ◽  
Ryohei Kuwatsuru ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Inversion Pulse ◽  
In Pregnancy

Three-dimensional ultrashort echo time cones (3D UTE-Cones) magnetic resonance imaging of entheses and tendons

2018 ◽  
Vol 49 ◽  
pp. 4-9 ◽  
Author(s):  
Bimin Chen ◽  
Yinghua Zhao ◽  
Xin Cheng ◽  
Yajun Ma ◽  
Eric Y. Chang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
Ultrashort Echo Time ◽  
Echo Time

scholarly journals Volumetric imaging of myelin in vivo using 3D inversion recovery‐prepared ultrashort echo time cones magnetic resonance imaging

2020 ◽  
Vol 33 (10) ◽  
Author(s):  
Ya‐Jun Ma ◽  
Adam C. Searleman ◽  
Hyungseok Jang ◽  
Shu‐Juan Fan ◽  
Jonathan Wong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Inversion Recovery ◽  
Resonance Imaging ◽  
3D Inversion ◽  
Ultrashort Echo Time ◽  
Volumetric Imaging ◽  
Echo Time
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