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Comparison with Magnetic Resonance Three-Dimensional Sequence for Lumbar Nerve Root with Intervertebral Foramen.

Takashima H, Takebayashi T, Shishido H, Yoshimoto M, Imamura R, Akatsuka Y, Terashima Y, Fujiwara H, Nagae M, Kubo T, Yamashita T - Asian Spine J (2016)

Bottom Line: We compared these sequence to determine the optimized visualization sequence for the lumbar spinal root of the intervertebral foramen.For the CNR between the nerve root and the peripheral tissue, these were no significant differences between the sequences at the entry of foramen.There was a significant difference and the highest CNR was seen with COSMIC-FS for the intra- and extra-foramen.

View Article: PubMed Central - PubMed

Affiliation: Division of Radiology and Nuclear Medicine, Sapporo Medical University Hospital, Sapporo, Japan.; Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.

ABSTRACT

Study design: Prospective study based on magnetic resonance (MR) imaging of the lumbar spinal root of the intervertebral foramen.

Purpose: This study was to compare MR three-dimensional (3D) sequences for the evaluation of the lumbar spinal root of the intervertebral foramen.

Overview of literature: The diagnosis of spinal disorders by MR imaging is commonly performed using two-dimensional T1- and T2-weighted images, whereas 3D MR images can be used for acquiring further detailed data using thin slices with multi-planar reconstruction.

Methods: On twenty healthy volunteers, we investigated the contrast-to-noise ratio (CNR) of the lumbar spinal root of the intervertebral foramen with a 3D balanced sequence. The sequences used were the fast imaging employing steady state acquisition and the coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC). COSMIC can be used with or without fat suppression (FS). We compared these sequence to determine the optimized visualization sequence for the lumbar spinal root of the intervertebral foramen.

Results: For the CNR between the nerve root and the peripheral tissue, these were no significant differences between the sequences at the entry of foramen. There was a significant difference and the highest CNR was seen with COSMIC-FS for the intra- and extra-foramen.

Conclusions: In this study, the findings suggest that the COSMIC-FS sequences should be used for the internal or external foramen for spinal root disorders.

No MeSH data available.


Related in: MedlinePlus

Contrast-to-noise ratio (CNR) of nerve root and pedicle with fast imaging employing steady state acquisition (FIESTA), coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC), and COSMIC-fat suppression (FS) for the intra-foramen. The CNR between the nerve root and pedicle at the intra-foramen were significantly different between sequences; the highest was COSMIC-FS (p<0.05).
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Figure 4: Contrast-to-noise ratio (CNR) of nerve root and pedicle with fast imaging employing steady state acquisition (FIESTA), coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC), and COSMIC-fat suppression (FS) for the intra-foramen. The CNR between the nerve root and pedicle at the intra-foramen were significantly different between sequences; the highest was COSMIC-FS (p<0.05).

Mentions: No significant differences were observed in the CNR between the nerve root and CSF in the intervertebral foramen entrance zone as calculated by all of the sequences (Fig. 3). The CNR between the nerve root and pedicle of the vertebral arch in the intervertebral foramen (Fig. 4) and that between the nerve root and the fat in the intervertebral foramen zone tended to be the highest when measured by COSMIC-FS (Fig. 5).


Comparison with Magnetic Resonance Three-Dimensional Sequence for Lumbar Nerve Root with Intervertebral Foramen.

Takashima H, Takebayashi T, Shishido H, Yoshimoto M, Imamura R, Akatsuka Y, Terashima Y, Fujiwara H, Nagae M, Kubo T, Yamashita T - Asian Spine J (2016)

Contrast-to-noise ratio (CNR) of nerve root and pedicle with fast imaging employing steady state acquisition (FIESTA), coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC), and COSMIC-fat suppression (FS) for the intra-foramen. The CNR between the nerve root and pedicle at the intra-foramen were significantly different between sequences; the highest was COSMIC-FS (p<0.05).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4764541&req=5

Figure 4: Contrast-to-noise ratio (CNR) of nerve root and pedicle with fast imaging employing steady state acquisition (FIESTA), coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC), and COSMIC-fat suppression (FS) for the intra-foramen. The CNR between the nerve root and pedicle at the intra-foramen were significantly different between sequences; the highest was COSMIC-FS (p<0.05).
Mentions: No significant differences were observed in the CNR between the nerve root and CSF in the intervertebral foramen entrance zone as calculated by all of the sequences (Fig. 3). The CNR between the nerve root and pedicle of the vertebral arch in the intervertebral foramen (Fig. 4) and that between the nerve root and the fat in the intervertebral foramen zone tended to be the highest when measured by COSMIC-FS (Fig. 5).

Bottom Line: We compared these sequence to determine the optimized visualization sequence for the lumbar spinal root of the intervertebral foramen.For the CNR between the nerve root and the peripheral tissue, these were no significant differences between the sequences at the entry of foramen.There was a significant difference and the highest CNR was seen with COSMIC-FS for the intra- and extra-foramen.

View Article: PubMed Central - PubMed

Affiliation: Division of Radiology and Nuclear Medicine, Sapporo Medical University Hospital, Sapporo, Japan.; Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.

ABSTRACT

Study design: Prospective study based on magnetic resonance (MR) imaging of the lumbar spinal root of the intervertebral foramen.

Purpose: This study was to compare MR three-dimensional (3D) sequences for the evaluation of the lumbar spinal root of the intervertebral foramen.

Overview of literature: The diagnosis of spinal disorders by MR imaging is commonly performed using two-dimensional T1- and T2-weighted images, whereas 3D MR images can be used for acquiring further detailed data using thin slices with multi-planar reconstruction.

Methods: On twenty healthy volunteers, we investigated the contrast-to-noise ratio (CNR) of the lumbar spinal root of the intervertebral foramen with a 3D balanced sequence. The sequences used were the fast imaging employing steady state acquisition and the coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC). COSMIC can be used with or without fat suppression (FS). We compared these sequence to determine the optimized visualization sequence for the lumbar spinal root of the intervertebral foramen.

Results: For the CNR between the nerve root and the peripheral tissue, these were no significant differences between the sequences at the entry of foramen. There was a significant difference and the highest CNR was seen with COSMIC-FS for the intra- and extra-foramen.

Conclusions: In this study, the findings suggest that the COSMIC-FS sequences should be used for the internal or external foramen for spinal root disorders.

No MeSH data available.


Related in: MedlinePlus