High-resolution STIR for 3-T MRI of the posterior fossa

Visualization of the lower cranial nerves and arteriovenous structures related to neurovascular compression

Hiwatashi Akio, Takashi Yoshiura, Koji Yamashita, Hironori Kamano, Hiroshi Honda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

OBJECTIVE. Preoperative evaluation of small vessels without contrast material is sometimes difficult in patients with neurovascular compression disease. The purpose of this retrospective study was to evaluate whether 3D STIR MRI could simultaneously depict the lower cranial nerves - fifth through twelfth - and the blood vessels in the posterior fossa. MATERIALS AND METHODS. The posterior fossae of 47 adults (26 women, 21 men) without gross pathologic changes were imaged with 3D STIR and turbo spin-echo heavily T2-weighted MRI sequences and with contrast-enhanced turbo field-echo MR angiography (MRA). Visualization of the cranial nerves on STIR images was graded on a 4-point scale and compared with visualization on T2-weighted images. Visualization of the arteries on STIR images was evaluated according to the segments in each artery and compared with that on MRA images. Visualization of the veins on STIR images was also compared with that on MRA images. Statistical analysis was performed with the Mann-Whitney U test. RESULTS. There were no significant differences between STIR and T2-weighted images with respect to visualization of the cranial nerves (p > 0.05). Identified on STIR and MRA images were 94 superior cerebellar arteries, 81 anteroinferior cerebellar arteries, and 79 posteroinferior cerebellar arteries. All veins evaluated were seen on STIR and MRA images. There were no significant differences between STIR and MRA images with respect to visualization of arteries and veins (p > 0.05). CONCLUSION. High-resolution STIR is a feasible method for simultaneous evaluation of the lower cranial nerves and the vessels in the posterior fossa without the use of contrast material.

Original languageEnglish
Pages (from-to)644-648
Number of pages5
JournalAmerican Journal of Roentgenology
Volume199
Issue number3
DOIs
Publication statusPublished - Sep 2012

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Cranial Nerves
Angiography
Arteries
Veins
Contrast Media
Trigeminal Nerve
Nonparametric Statistics
Blood Vessels
Retrospective Studies

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

High-resolution STIR for 3-T MRI of the posterior fossa : Visualization of the lower cranial nerves and arteriovenous structures related to neurovascular compression. / Akio, Hiwatashi; Yoshiura, Takashi; Yamashita, Koji; Kamano, Hironori; Honda, Hiroshi.

In: American Journal of Roentgenology, Vol. 199, No. 3, 09.2012, p. 644-648.

Research output: Contribution to journalArticle

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abstract = "OBJECTIVE. Preoperative evaluation of small vessels without contrast material is sometimes difficult in patients with neurovascular compression disease. The purpose of this retrospective study was to evaluate whether 3D STIR MRI could simultaneously depict the lower cranial nerves - fifth through twelfth - and the blood vessels in the posterior fossa. MATERIALS AND METHODS. The posterior fossae of 47 adults (26 women, 21 men) without gross pathologic changes were imaged with 3D STIR and turbo spin-echo heavily T2-weighted MRI sequences and with contrast-enhanced turbo field-echo MR angiography (MRA). Visualization of the cranial nerves on STIR images was graded on a 4-point scale and compared with visualization on T2-weighted images. Visualization of the arteries on STIR images was evaluated according to the segments in each artery and compared with that on MRA images. Visualization of the veins on STIR images was also compared with that on MRA images. Statistical analysis was performed with the Mann-Whitney U test. RESULTS. There were no significant differences between STIR and T2-weighted images with respect to visualization of the cranial nerves (p > 0.05). Identified on STIR and MRA images were 94 superior cerebellar arteries, 81 anteroinferior cerebellar arteries, and 79 posteroinferior cerebellar arteries. All veins evaluated were seen on STIR and MRA images. There were no significant differences between STIR and MRA images with respect to visualization of arteries and veins (p > 0.05). CONCLUSION. High-resolution STIR is a feasible method for simultaneous evaluation of the lower cranial nerves and the vessels in the posterior fossa without the use of contrast material.",
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N2 - OBJECTIVE. Preoperative evaluation of small vessels without contrast material is sometimes difficult in patients with neurovascular compression disease. The purpose of this retrospective study was to evaluate whether 3D STIR MRI could simultaneously depict the lower cranial nerves - fifth through twelfth - and the blood vessels in the posterior fossa. MATERIALS AND METHODS. The posterior fossae of 47 adults (26 women, 21 men) without gross pathologic changes were imaged with 3D STIR and turbo spin-echo heavily T2-weighted MRI sequences and with contrast-enhanced turbo field-echo MR angiography (MRA). Visualization of the cranial nerves on STIR images was graded on a 4-point scale and compared with visualization on T2-weighted images. Visualization of the arteries on STIR images was evaluated according to the segments in each artery and compared with that on MRA images. Visualization of the veins on STIR images was also compared with that on MRA images. Statistical analysis was performed with the Mann-Whitney U test. RESULTS. There were no significant differences between STIR and T2-weighted images with respect to visualization of the cranial nerves (p > 0.05). Identified on STIR and MRA images were 94 superior cerebellar arteries, 81 anteroinferior cerebellar arteries, and 79 posteroinferior cerebellar arteries. All veins evaluated were seen on STIR and MRA images. There were no significant differences between STIR and MRA images with respect to visualization of arteries and veins (p > 0.05). CONCLUSION. High-resolution STIR is a feasible method for simultaneous evaluation of the lower cranial nerves and the vessels in the posterior fossa without the use of contrast material.

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