scholarly journals Usefulness of three-dimensional reconstructed image by using 3.0 tesla magnetic resonance image for microvascular decompression in patients with hemifacial spasm

2008 ◽  
Vol 6 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Taichi KIN ◽  
Hiroshi OYAMA ◽  
Kyosuke KAMADA ◽  
Nobuhito SAITO
Keyword(s):  
Magnetic Resonance ◽  
Hemifacial Spasm ◽  
Microvascular Decompression ◽  
Magnetic Resonance Image ◽  
Three Dimensional ◽  
Reconstructed Image ◽  
3.0 Tesla

Reoperation for Persistent or Recurrent Hemifacial Spasm after Microvascular Decompression

Neurosurgery ◽  
2006 ◽  
Vol 58 (6) ◽  
pp. 1162-1167 ◽  
Author(s):  
Yong Sook Park ◽  
Jong Hee Chang ◽  
Joon Cho ◽  
Yong Gou Park ◽  
Sang Sup Chung ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Adverse Effects ◽  
Hemifacial Spasm ◽  
Microvascular Decompression ◽  
Short Range ◽  
Three Dimensional ◽  
Facial Weakness ◽  
Mild Improvement ◽  
Excellent Improvement

Abstract OBJECTIVE: The objective of this study was to investigate the outcome of reoperation for persistent or recurrent hemifacial spasm (HFS) after microvascular decompression (MVD). METHODS: Repeat MVD was performed on 13 patients with an HFS between June 1994 and May 2004. Patients who had compressing offending vessels identified on postoperative (prerevision) three-dimensional short-range magnetic resonance angiography were selected for repeat MVD. RESULTS: Six patients were found to have no improvement in HFS with the first MVD. All of these patients exhibited excellent improvement after the second MVD. In one patient who had mild improvement with the first MVD, but with more than 50% of remaining spasm, complete abolition of spasm occurred immediately after the second MVD. Six patients showed initial relief and subsequent aggravation of HFS after the first MVD. Of these patients, four had excellent results with the second MVD, one had a good result, and one had a fair outcome. Adverse effects after the second MVD were found in two patients (one patient with permanent mild facial weakness and one patient with hearing impairment). There was no serious morbidity associated with the second MVD. CONCLUSION: Our data suggest that repeat MVD of the facial nerve may be sufficient to resolve symptoms in selected patients with persistent or recurrent HFS. Additionally, three-dimensional short-range magnetic resonance angiography may help to identify the offending vessels and to select the patients with persistent or recurrent HFS.

Preoperative Three-Dimensional Diagnosis of Neurovascular Relationships at the Root Exit Zones During Microvascular Decompression for Hemifacial Spasm

2016 ◽  
Vol 92 ◽  
pp. 171-178 ◽  
Author(s):  
Keisuke Ohtani ◽  
Toshihiro Mashiko ◽  
Keiji Oguro ◽  
Atsuhito Takemura ◽  
Toru Hatayama ◽  
...  
Keyword(s):  
Hemifacial Spasm ◽  
Microvascular Decompression ◽  
Three Dimensional ◽  
Dimensional Diagnosis

Application of three-dimensional magnetic resonance image registration for monitoring hip joint diseases

2005 ◽  
Vol 23 (5) ◽  
pp. 665-670 ◽  
Author(s):  
Masaki Takao ◽  
Nobuhiko Sugano ◽  
Takashi Nishii ◽  
Hisahi Tanaka ◽  
Jun Masumoto ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Image Registration ◽  
Hip Joint ◽  
Magnetic Resonance Image ◽  
Three Dimensional ◽  
Joint Diseases

scholarly journals Magnetic resonance image evaluation of pallidotomy lesions: a volumetric and shape analysis

1997 ◽  
Vol 2 (3) ◽  
pp. E5 ◽  
Author(s):  
Jeffrey M. Burns ◽  
Steve Wilkinson ◽  
John Overman ◽  
Jennifer Kieltyka ◽  
Thorsten Lundsgaarde ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Globus Pallidus ◽  
Magnetic Resonance Image ◽  
Three Dimensional ◽  
Volumetric Analysis ◽  
Lesion Volume ◽  
Slice Thickness ◽  
Mr Images ◽  
Ellipsoid Volume ◽  
Volume Estimates

Determination of acute pallidotomy-produced lesion volumes, pre- and postpallidotomy globus pallidus (GP) volumes, and assessment of lesion shape using magnetic resonance (MR) imaging-based computerized segmentation (contouring) and three-dimensional rendering was made in 19 patients. Magnetic resonance image slice thickness (1.5 mm or 6 mm) was not found to be a significant factor influencing contour-based pallidotomy lesion volume estimates. Previously reported lesion volumes produced by pallidotomy have often been estimated using the ellipsoid volume formula. Using 1.5-mm-thick MR sections, contour-based pallidotomy-produced lesion volumes were significantly different from those volumes estimated by the ellipsoid formula. Globus pallidus volumes, estimated by contouring T2-weighted MR images, were bilaterally similar (2.4 ± 0.37 ml [right]; 2.2 ± 0.45 ml [left]). Postoperative GP volumes were found on the contralateral, unlesioned side to be 2 ± 0.45 ml and on the lesioned side to be 1.25 ± 0.45 ml. Using the contralateral, unlesioned side as a reference volume, approximately 39 ± 14% of the GP was visibly affected on the lesioned side. Seventeen of 18 patients had a favorable outcome with reduced dyskinesias and "off" time with improvement in parkinsonian symptoms. Analysis of computerized three-dimensional rendering of pallidotomy-produced lesions based on MR images showed no relationship between lesioning technique and resulting lesion shape. Important factors in the volumetric analysis of pallidotomy lesions are identified and allow reasonable assessment of the pallidotomy lesion volume and shape and the extent of the affected GP.

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