Three-dimensional fast imaging employing steady-state acquisition MRI and its diagnostic value for lumbar foraminal stenosis

Nemoto, Osamu; Fujikawa, Akira; Tachibana, Atsuko

doi:10.1007/s00590-013-1377-9

“…In current research on the aetiology of CR, the TFL may be a new factor. The 3D-FIESTA sequence clearly displays the anatomic details because it has high soft tissue resolution, with increasing applications in clinical practice due to its short scanning time [5,6]. This study applied 3D-FIESTA sequencing to scan the intervertebral foramina of cervical spine specimens and confirmed its high clinical value in displaying the cervical TFL.…”

Section: Introductionmentioning

confidence: 56%

Cervical transforaminal ligaments on MRI and its clinical significance

Li

¹

,

Wang

²

,

Zhang

³

et al. 2019

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0

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Background This study examined cervical transforaminal ligament(TFL) displays in cadavers and living bodies using magnetic resonance imaging (MRI) and evaluated the correlation between nerve entrapment in the brachial plexus by the TFL and cervical radiculopathy(CR). Methods First, 6 normal intact adult cervical specimens were used to calculate the relevant capacity in displaying the cervical TFLs by the three-dimensional fast imaging employing steady-state acquisition (3D-FIESTA). Second, 10 patients with CR and 10 healthy subjects were selected to perform the 3D-FIESTA sequence scan at the C4-T1 intervertebral foramina. The TFL display rate was calculated, and its correlation with CR was analysed. Results The microscopic anatomical results showed that the cervical TFL incidence was 39.6%. The relative capacity of the 3D-FIESTA sequence in displaying cervical TFLs showed a 96.6% specificity and a 73.7% sensitivity. In the 10 patients with CR, cervical TFLs were present in 17 intervertebral foramina, of which, 10 cases showed hypertrophy of the TFLs causing nerve entrapment, and corresponding symptoms of CR were found in 8 cases of cervical TFLs. The correlation between nerve root entrapment by the cervical TFL and CR showed a 96.8% specificity and an 80% sensitivity. In the 10 healthy subjects, cervical TFLs were present in 13 intervertebral foramina. Conclusions The MR 3D-FIESTA sequence has high clinical value in displaying cervical TFLs in both cadavers and living bodies. If 3D-FIESTA sequencing shows nerve entrapment by the TFL, the possibility of CR caused by this TFL is approximately 80.0%. Conversely, the possibility of CR remains at 3.2%.

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“…In current research on the aetiology of CR, the TFL may be a new factor. The 3D-FIESTA sequence clearly displays the anatomic details because it has high soft tissue resolution, with increasing applications in clinical practice due to its short scanning time [5,6]. This study applied 3D-FIESTA sequencing to scan the intervertebral foramina of cervical spine specimens and con rmed its high clinical value in displaying the cervical TFL.…”

Section: Introductionmentioning

confidence: 76%

Cervical transforaminal ligaments on MRI and its clinical significance

Li

¹

,

Wang

²

,

Zhang

³

et al. 2019

Preprint

0

View full text Add to dashboard Cite

Background This study examined cervical transforaminal ligament(TFL) displays in cadavers and living bodies using magnetic resonance imaging (MRI) and evaluated the correlation between nerve entrapment in the brachial plexus by the TFL and cervical radiculopathy(CR). Methods First, 6 normal intact adult cervical specimens were used to calculate the relevant capacity in displaying the cervical TFLs by the three-dimensional fast imaging employing steady-state acquisition (3D-FIESTA). Second, 10 patients with CR and 10 healthy subjects were selected to perform the 3D-FIESTA sequence scan at the C4-T1 intervertebral foramina. The TFL display rate was calculated, and its correlation with CR was analysed. Results The microscopic anatomical results showed that the cervical TFL incidence was 39.6%. The relative capacity of the 3D-FIESTA sequence in displaying cervical TFLs showed a 96.6% specificity and a 73.7% sensitivity. In the 10 patients with CR, cervical TFLs were present in 17 intervertebral foramina, of which, 10 cases showed hypertrophy of the TFLs causing nerve entrapment, and corresponding symptoms of CR were found in 8 cases of cervical TFLs. The correlation between nerve root entrapment by the cervical TFL and CR showed a 96.8% specificity and an 80% sensitivity. In the 10 healthy subjects, cervical TFLs were present in 13 intervertebral foramina. Conclusions The MR 3D-FIESTA sequence has high clinical value in displaying cervical TFLs in both cadavers and living bodies. If 3D-FIESTA sequencing shows nerve entrapment by the TFL, the possibility of CR caused by this TFL is approximately 80.0%. Conversely, the possibility of CR remains at 3.2%.

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“…Recently, Nemoto et al. reported that three-dimensional fast MRI employing steady-state acquisition (FIESTA) is useful for diagnosis of LFS (18). This technique allows for continuous full view of the lumbar nerve root because it provides thin slice thickness without a slice gap and high spatial resolution.…”

Section: Discussionmentioning

confidence: 99%

Is multidetector computed tomography comparable to magnetic resonance imaging for assessment of lumbar foraminal stenosis?

Kang

¹

,

Ahn

²

,

Lee

³

et al. 2016

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Background Both multidetector computed tomography (MDCT) and magnetic resonance imaging (MRI) are used for assessment of lumbar foraminal stenosis (LFS). Therefore, it is relevant to assess agreement between these imaging modalities. Purpose To determine intermodality, inter-, and intra-observer agreement for assessment of LFS on MDCT and MRI. Material and Methods A total of 120 foramina in 20 patients who visited our institution in January and February 2014 were evaluated by six radiologists with different levels of experience. Radiologists evaluated presence and severity of LFS on sagittal CT and MR images according to a previously published LFS grading system. Intermodality agreement was analyzed by using weighted kappa statistics, while inter- and intra-observer agreement were analyzed by using intraclass correlation coefficients (ICCs) and kappa statistics. Results Overall intermodality agreement was moderate to good (kappa, 0.478-0.765). In particular, two professors and one fellow tended to overestimate the degree of LFS on CT compared with MRI. For inter-observer agreement of all six observers, ICCs indicated excellent agreement for both CT (0.774) and MRI (0.771), while Fleiss' kappa values showed moderate agreement for CT (0.482) and MRI (0.575). There was better agreement between professors and fellows compared with residents. For intra-observer agreement, ICCs indicated excellent agreement, while kappa values showed good to excellent agreement for both CT and MRI. Conclusion MDCT was comparable to MRI for diagnosis and assessment of LFS, especially for experienced observers. However, there was a tendency to overestimate the degree of LFS on MDCT compared with MRI.

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Three-dimensional fast imaging employing steady-state acquisition MRI and its diagnostic value for lumbar foraminal stenosis

Cited by 18 publications

References 20 publications

Cervical transforaminal ligaments on MRI and its clinical significance

Cervical transforaminal ligaments on MRI and its clinical significance

Cervical transforaminal ligaments on MRI and its clinical significance

Is multidetector computed tomography comparable to magnetic resonance imaging for assessment of lumbar foraminal stenosis?

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