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Abstract

Essential hypertension and neurovascular compression at the ventrolateral medulla oblongata: MR evaluation.

T Akimura, Y Furutani, Y Jimi, K Saito, S Kashiwagi, S Kato and H Ito
American Journal of Neuroradiology February 1995, 16 (2) 401-405;
T Akimura
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Y Furutani
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Y Jimi
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K Saito
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S Kashiwagi
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S Kato
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H Ito
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Abstract

PURPOSE To investigate, using MR imaging, neurovascular compression at the ventrolateral medulla oblongata in patients with essential hypertension.

METHODS Thirty-two patients with essential hypertension (57.6 +/- 7 years of age), 6 patients with secondary hypertension (56.7 +/- 10.3 years of age), and 18 control subjects (50.5 +/- 11 years of age) were evaluated. Transaxial three-dimensional fast low angle shot images were obtained (38/6/1 [repetition time/echo time/excitations]). The center of a 40-mm-thick slab (16 partitions) was placed at the pontomedullary junction. We evaluated the relationships between the upper ventrolateral medulla and the vertebral arteries and branches identified by their flow-related hyperintensities in each group.

RESULTS In the essential hypertension group, 29 (90.6%) of 32 cases showed neurovascular compression. Of those, 22 demonstrated neurovascular compression on the left side, 3 on both sides, and 4 on the right side. In the control group, 4 cases of 18 showed neurovascular compression. In the secondary hypertension group, 1 of 6 cases showed neurovascular compression. The rates of observed neurovascular compression between controls and essential hypertension group were statistically significant.

CONCLUSION We found a close correlation between essential hypertension and neurovascular compression at the ventrolateral medulla oblongata on the left side. MR with a 3-D fast low-angle shot sequence has acceptable spatial resolution and depicts blood vessels simultaneously by flow-related phenomena.

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American Journal of Neuroradiology
Vol. 16, Issue 2
1 Feb 1995
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Essential hypertension and neurovascular compression at the ventrolateral medulla oblongata: MR evaluation.
T Akimura, Y Furutani, Y Jimi, K Saito, S Kashiwagi, S Kato, H Ito
American Journal of Neuroradiology Feb 1995, 16 (2) 401-405;

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Essential hypertension and neurovascular compression at the ventrolateral medulla oblongata: MR evaluation.
T Akimura, Y Furutani, Y Jimi, K Saito, S Kashiwagi, S Kato, H Ito
American Journal of Neuroradiology Feb 1995, 16 (2) 401-405;
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