scholarly journals High-Resolution 3D MR Imaging of the Trochlear Nerve

2010 ◽  
Vol 31 (6) ◽  
pp. 1076-1079 ◽  
Author(s):  
B.S. Choi ◽  
J.H. Kim ◽  
C. Jung ◽  
J.-M. Hwang
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Trochlear Nerve ◽  
3D Mr Imaging

Preoperative magnetic resonance imaging in Type 2 trigeminal neuralgia

2010 ◽  
Vol 113 (3) ◽  
pp. 511-515 ◽  
Author(s):  
Andrew C. Zacest ◽  
Stephen T. Magill ◽  
Jonathan Miller ◽  
Kim J. Burchiel
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Facial Pain ◽  
Neurovascular Compression ◽  
Imaging Reconstruction ◽  
Group A ◽  
Group B ◽  
3D Mr Imaging

Object Trigeminal neuralgia (TN) is a neuropathic pain syndrome that is often associated with neurovascular compression of the trigeminal nerve and may be effectively treated with microvascular decompression (MVD). The authors used high-resolution MR imaging with 3D reconstruction in patients with constant facial pain (Type 2 TN) to determine the presence/absence of neurovascular compression and thus a potential MVD benefit. They retrospectively contacted patients to evaluate outcome. Methods All patients who reported spontaneous onset of constant facial pain (Type 2 TN), which occurred at least 50% of the time, who had undergone high-resolution 3-T MR imaging with 3D reconstruction were retrospectively selected for this study. Clinical history, facial pain questionnaire data, physical examination findings, and results from 3-T 3D MR imaging reconstruction were recorded for all patients. Intraoperative findings and clinical pain outcome were recorded for all patients who underwent MVD. Results Data obtained in 27 patients were assessed. On the basis of history and 3D MR imaging reconstruction findings, 13 patients were selected for MVD (Group A) and 14 underwent conservative treatment (Group B). Typical or suspected artery- or vein-induced neurovascular compression was predicted preoperatively in 100% of Group A patients and in 0% of Group B patients. At the time of MVD, definitive neurovascular compression was confirmed in 11 (84.6%) of 13 Group A patients. Following MVD, facial pain was completely relieved in 3 (23%), improved in 7 (53.8%), and no better in 3 (23%) of 13 Group A patients. A history of episodic (Type 1 TN) pain at any time was reported in 100 and 50% of Group A and Group B patients, respectively. A Type 1 TN pain component was reportedly improved/relieved in all Group A patients, but the Type 2 TN pain component was improved in only 7 (53.8%) of 13 patients. The mean postoperative follow-up duration was 13 months. Conclusions High-resolution 3D MR imaging reconstruction in patients with constant facial pain (Type 2 TN) can help determine the presence/absence of neurovascular compression. Surgical selection based on both clinical and radiological criteria has the potential to improve surgical outcome in patients with Type 2 TN who may potentially benefit from MVD. However, even in such selected patients, pain relief is likely to be incomplete.

scholarly journals Topographic Analysis of the Inferior Parietal Lobule in High-Resolution 3D MR Imaging

2009 ◽  
Vol 30 (3) ◽  
pp. 520-524 ◽  
Author(s):  
I. Kiriyama ◽  
H. Miki ◽  
K. Kikuchi ◽  
S. Ohue ◽  
S. Matsuda ◽  
...  
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Inferior Parietal Lobule ◽  
Topographic Analysis ◽  
Parietal Lobule ◽  
3D Mr Imaging

High-resolution variable flip angle 3D MR imaging of trabecular microstructurein vivo

1993 ◽  
Vol 29 (4) ◽  
pp. 528-539 ◽  
Author(s):  
H. Jara ◽  
F. W. Wehrli ◽  
H. Chung ◽  
J. C. Ford
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Flip Angle ◽  
Variable Flip Angle ◽  
3D Mr Imaging

scholarly journals High-Resolution In Utero 3D MR Imaging of Inner Ear Microstructures in Fetal Sheep

2011 ◽  
Vol 32 (11) ◽  
pp. 2043-2046 ◽  
Author(s):  
J.-H. Buhk ◽  
M. Frisch ◽  
J. Yamamura ◽  
J. Graessner ◽  
G. Adam ◽  
...  
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Inner Ear ◽  
In Utero ◽  
Fetal Sheep ◽  
3D Mr Imaging

Normal Magnetic Resonance Imaging Anatomy of the Anterolateral Knee Ligament with a T2/T1-Weighted 3-Dimensional Sequence: A Feasibility Study

2016 ◽  
Vol 67 (1) ◽  
pp. 52-59 ◽  
Author(s):  
Michail E. Klontzas ◽  
Thomas G. Maris ◽  
Aristeidis H. Zibis ◽  
Apostolos H. Karantanas
Keyword(s):  
High Resolution ◽  
Mr Imaging ◽  
Healthy Volunteers ◽  
Pulse Sequence ◽  
Slice Thickness ◽  
Mr Images ◽  
Knee Ligament ◽  
3D Images ◽  
3 Dimensional ◽  
3D Mr Imaging

Purpose The anatomy of the lateral knee compartment has been recently further explored with description of the anterolateral knee ligament (ALL). The purpose of this study was to confirm the presence of ALL on cadaveric knees and to describe its normal anatomy in young healthy volunteers, utilizing a high-resolution 3-dimensional (3D) pulse sequence. Methods Dissection was performed on 9 cadaveric knees in order to confirm the presence of ALL. Conventional 2-dimensional sequences of 10 knees at 1.5 T and 10 knees at 3 T, with a slice thickness of 2-4 mm, were reviewed for the presence of ALL. A 3D T2/T1-weighted gradient echo sequence (constructive interference in steady state [CISS]), yielding in-plane resolution of 0.4 mm × 0.4 mm × 0.4 mm, was applied in 14 healthy volunteers (26 knees). All 3D images were manipulated using multiplanar reconstruction (MPR) and the presence and width of ALL were recorded. Results Cadaveric dissection disclosed the presence of ALL in 8 of 9 knees. Conventional knee MR imaging depicted ALL only on coronal images (18 of 20) whereas the CISS revealed ALL on 24 of 26 studied knees (92.3%). ALL has a mean thickness of 1.1 ± 0.27 mm measured on coronal MR images. Conclusions ALL can be thoroughly assessed in young healthy individuals with the use of high-resolution 3D MR imaging with MPR at 1.5 T.

scholarly journals High-resolution dynamic oxygen-17 MR imaging of mouse brain with golden-ratio-based radial sampling and k-space-weighted image reconstruction

2017 ◽  
Vol 79 (1) ◽  
pp. 256-263 ◽  
Author(s):  
Yuchi Liu ◽  
Yifan Zhang ◽  
Chunying Wu ◽  
Junqing Zhu ◽  
Charlie Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Image Reconstruction ◽  
Mr Imaging ◽  
Mouse Brain ◽  
Golden Ratio ◽  
Weighted Image ◽  
Radial Sampling
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