scholarly journals Ultra-short echo time magnetic resonance imaging for detection of pulmonary arteriovenous malformation recanalization after coil embolization: a case report and a phantom study

2017 ◽  
Vol 6 (9) ◽  
pp. 205846011773210 ◽  
Author(s):  
Kohei Hamamoto ◽  
Emiko Chiba ◽  
Katsuhiko Matsuura ◽  
Tomohisa Okochi ◽  
Keisuke Tanno ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Arteriovenous Malformation ◽  
Pulmonary Arteries ◽  
Transcatheter Embolization ◽  
Phantom Study ◽  
Pulmonary Arteriovenous Malformation ◽  
Resonance Imaging ◽  
Echo Time ◽  
Short Echo Time

A pulmonary arteriovenous malformation (PAVM) is a direct connection between the pulmonary arteries and veins for which metallic coil transcatheter embolization is the standard of care. Detecting recanalization after PAVM treatment is crucial, but direct visualization with computed tomography or magnetic resonance imaging (MRI) is generally difficult. Here, we report a case of a recanalized PAVM that was directly detected with ultra-short echo time MRI. The detection of these signals in the coils was confirmed in a phantom study.

Short Echo Time Magnetic Resonance Imaging of Tendon

1993 ◽  
Vol 28 (12) ◽  
pp. 1095-1100 ◽  
Author(s):  
PHILIP D. KOBLIK ◽  
DOMINIQUE M. FREEMAN
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Echo Time ◽  
Short Echo Time

scholarly journals Use of Short Echo Time Two-Dimensional 1H-Magnetic Resonance Spectroscopy in Temporal Lobe Epilepsy with Negative Magnetic Resonance Imaging Findings

2009 ◽  
Vol 37 (4) ◽  
pp. 1211-1219 ◽  
Author(s):  
J Shen ◽  
L Zhang ◽  
X Tian ◽  
J Liu ◽  
X Ge ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Healthy Controls ◽  
Two Dimensional ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Echo Time ◽  
Short Echo Time ◽  
Negative Magnetic Resonance Imaging

We evaluated short echo time two-dimensional 1H magnetic resonance spectroscopy (2D-1HMRS) with the point-resolved spatial selection (PRESS) protocol in temporal lobe epilepsy (TLE) patients with negative magnetic resonance imaging (MRI) findings and described the characteristics of 2D-1HMRS in the epileptic focus. Thirty-eight TLE patients with negative conventional MRI findings and 10 healthy controls were studied by 2D-1HMRS. A 128-channel prolonged video-electroencephalographic (EEG) method was used as the standard for epileptogenic focus localization to evaluate N-acetyl aspartate/(choline + creatine + phospho - creatine) (NAA/[Cho + Cr–PCr]), glutamate + glutamine/creatine (Glx/Cr–PCr) and myo-inositol/Cr–PCr ratios in patients with negative MRI findings. The 2D-1HMRS showed that 32/38 patients and all healthy controls had stable baselines and good signal-to-noise ratios. Compared with the healthy controls, 32 patients showed abnormal NAA/(Cho + Cr–PCr) ratios in the hippocampus and, in 25 of these patients, focus lateralization agreed with the EEG. It is concluded that short echo time 2D-1HMRS with the PRESS protocol can help find abnormalities in lateralization of temporal epilepsy in patients with negative MRI findings.

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