Magnetic resonance myelography (MRM) as a spinal examination technique

Ramsbacher, Josef; Schilling, A.; Wolf, Karl‐Jürgen; Brock, M.

doi:10.1007/bf01411564

Cited by 22 publications

(13 citation statements)

References 21 publications

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“…Regarding MRI and MRM, their less invasive natures, low complication rates, and high inter-observer agreements are strong points as compared with myelography 1,5,15,18) . However, there are different opinions about MRM, which is less accurate 12,16) .…”

Section: Discussionmentioning

confidence: 99%

Comparative Study of Lumbar Magnetic Resonance Imaging and Myelography in Young Soldiers with Herniated Lumbar Disc

Kang

Choi

Seong

et al. 2010

J Korean Neurosurg Soc

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Objective : This study was undertaken to compare the diagnostic performances of magnetic resonance imaging (MRI), MR myelography (MRM) and myelography in young soldiers with a herniated lumbar disc (HLD). Methods : Sixty-five male soldiers with HLD comprised the study cohort. A visual analogue scale for low back pain (VAS-LBP), VAS for leg radiating pain (VAS-LP), and Oswestry disability index (ODI) were applied. Lumbar MR, MRM, and myelographic findings were checked and evaluated by four independent radiologists, respectively. Each radiologist was asked to score (1 to 5) the degree of disc protrusion and nerve root compression using modified grading systems devised by the North American Spine Society and Pfirrmann and the physical examination rules for conscription in the Republic of Korea. Correlated coefficients between clinical and radiological factors were calculated. Interpretational reproducibility between MRI and myelography by four bases were calculated and compared. Results : Mean patient age was 20.5 ± 1.1. Mean VAS-LBP and VAS-LP were 6.7 ± 1.6 and 7.4 ± 1.7, respectively. Mean ODI was 48.0 ± 16.2%. Mean MRI, MRM, and myelography scores were 3.3 ± 0.9, 3.5 ± 1.0, and 3.9 ± 1.1, respectively. All scores of diagnostic performances were significantly correlated (p < 0.05). However, none of these scores reflected the severity of patients' symptoms. There was no statistical difference of interpretational reproducibility between MRI and myelography. Conclusion : Although MRI and myelography are based on different principles, they produce similar interpretational reproducibility in young soldiers with a HLD. However, these modalities do not reflect the severity of symptoms.

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Section: Discussionmentioning

confidence: 99%

Comparative Study of Lumbar Magnetic Resonance Imaging and Myelography in Young Soldiers with Herniated Lumbar Disc

Kang

Choi

Seong

et al. 2010

J Korean Neurosurg Soc

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“…Discography-CT was once used to identify extraforaminal disc but it is not routinely being used due to its some degree of invasiveness and lower specificity 14) . MRM was developed in late 1980's 12) . It has become one of popular auxiliary diagnostic methods used in brain or spinal lesion.…”

Section: Discussionmentioning

confidence: 99%

Morphologic Changes of L5 Root at Coronal Source Images of MR Myelography in Cases of Foraminal or Extraforaminal Compression

Kim

Jang

Lee

2009

J Korean Neurosurg Soc

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Objective : Two findings easily found at coronal source images of MR myelography (MRM) were evaluated : dorsal root ganglion (DRG) swelling and running course abnormality (RCA) of L5 exiting root at foramen or extraforamen. We tried to find the sensitivity of each finding when root was compressed. Methods : From 2004 July to 2006, one hundred and ten patients underwent one side paraspinal decompression for their L5 root foraminal or extraforaminal compression at L5-S1 level. All kinds of conservative treatments failed to improve leg symptom for several months. Before surgery, MRI, CT and MRM were done. Retrospective radiologic analysis for their preoperative MRM coronal source images was done to specify root compression sites and L5 root morphologic changes. Results : DRG swelling was found in 66 (60%) of 110 patients. DRG swelling has statistically valuable meaning in foraminal root compression (chi-square test, p < 0.0001). Seventy-two (66%) in 110 patients showed abnormal alteration of running course. Abnormal running course has statistically valuable meaning in foraminal or extraforaminal root compression (chi-square test, p < 0.0001). Conclusion : Three-dimensional MRM provides precise thin sliced coronal images which are most close to real operative views. DRG swelling and running course abnormality of L5 exiting root are two useful findings in diagnosing L5 root compression at L5-S1 foramen or extraforamen. MRM is thought to provide additional diagnostic accuracy expecially in L5-S1 foraminal and extraforaminal area.

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“…Magnetic resonance imaging (MRI) helps to evaluate compression of the roots and cauda equina or spinal cord at upper levels. In cases of stenosis following spinal surgical procedures, con- trast-enhanced MRI is very helpful to differentiate peridural scar formation, recurrent disc herniation, and facet hypertrophy [12,15,18]. Even though some authors conclude that most cases of lumbar spinal stenosis can be managed conservatively, the literature to date has focused primarily on surgical treatment, and studies comparing conservative and surgical management of spinal stenosis are insufficient [1,8,12,14].…”

Section: Discussionmentioning

confidence: 99%

Surgical therapy for lumbar spinal stenosis: evaluation of 300 cases

et al. 2001

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Although lumbar spinal stenosis syndrome is extremely common, considerable controversy continues to surround its classification, diagnosis, and treatment. In this article, we retrospectively analyzed the clinical, radiological, and surgical characteristics of 300 patients operated on in our clinics with the diagnosis of lumbar spinal stenosis. Surgical therapy and outcome are discussed with respect to the known facts. After clinical and radiological evaluation, 300 patients were diagnosed with lumbar spinal stenosis. All patients underwent laminectomy and bilateral foraminotomy at the stenotic level. Surgical outcomes were evaluated as very good, good, same, and poor according to the clinical findings. Ninety percent of the surgically treated patients demonstrated very good and good outcomes. Our conclusion in lumbar spinal stenosis diagnosed by objective clinical and radiological findings is that decompressive laminectomy and extensive foraminotomy without instrumentation allow a good outcome.

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Magnetic resonance myelography (MRM) as a spinal examination technique

Abstract: Both methods have the same diagnostic accuracy, but MRM requires neither puncture nor contrast medium nor x-rays.

Cited by 22 publications

References 21 publications

Comparative Study of Lumbar Magnetic Resonance Imaging and Myelography in Young Soldiers with Herniated Lumbar Disc

Comparative Study of Lumbar Magnetic Resonance Imaging and Myelography in Young Soldiers with Herniated Lumbar Disc

Morphologic Changes of L5 Root at Coronal Source Images of MR Myelography in Cases of Foraminal or Extraforaminal Compression

Surgical therapy for lumbar spinal stenosis: evaluation of 300 cases

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