scholarly journals Measurement of the cross-sectional area of the dural tube in the lumbar spine on magnetic resonance imaging-Comparison between normal, pre-and post-discectomy conditions

1997 ◽  
Vol 43 (1) ◽  
pp. 78-84
Author(s):  
YASUTOMO MATSUBAYASHI
Keyword(s):  
Magnetic Resonance Imaging ◽  
Lumbar Spine ◽  
Magnetic Resonance ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
The Cross

Intra- and inter-rater reliability for the measurement of the cross-sectional area of ankle tendons assessed by magnetic resonance imaging

2021 ◽  
pp. 028418512110032
Author(s):  
Henrique Mansur ◽  
Guilherme Estanislau ◽  
Marcos de Noronha ◽  
Rita de Cassia Marqueti ◽  
Emerson Fachin-Martins ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Repeated Measures ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Rater Reliability ◽  
The Cross ◽  
Very High

Background The cross-sectional area (CSA) records make an essential measurement for determining the mechanical properties of tendons, such as stress and strength. However, there is no consensus regarding the best method to record the CSA from different tendons. Purpose To determine intra- and inter-rater reliability for CSA measures from magnetic resonance imaging (MRI) of the following tendons: tibialis anterior; tibialis posterior; fibularis longus and brevis; and Achilles. Material and Methods We designed an observational study with repeated measures taken from a convenience sample of 20 participants diagnosed with acute or chronic ankle sprain. Two independent raters took three separate records from the CSA of ankle tendon images of each MRI slice. The intra-class correlation coefficient (ICC) and 95% limits of agreement (LoA) defined the quality (associations) and magnitude (differences), respectively, of intra- and inter-rater reliability on the measures plotted by the Bland–Altman method. Results Data showed very high intra- and inter-rater correlations for measures taken from all tendons analyzed (ICC 0.952–0.999). It also revealed an excellent agreement between raters (0.12%–2.3%), with bias no higher than 2 mm2 and LoA in the range of 4.4–7.9 mm2. The differences between repeated measures recorded from the thinnest tendons (fibularis longus and brevis) revealed the lowest bias and narrowest 95% LoA. Conclusion Reliability for the CSA of ankle tendons measured from MRI taken by independent rates was very high, with the smallest differences between raters observed when the thinnest tendon was analyzed.

scholarly journals Erratum to: Reliability of magnetic resonance imaging measurements of the cross-sectional area of the muscle contractile and non-contractile components

2011 ◽  
Vol 33 (8) ◽  
pp. 743-743 ◽  
Author(s):  
Olivier Gille ◽  
Mathieu-Panchoa de Sèze ◽  
Patrick Guérin ◽  
Erwan Jolivet ◽  
Jean-Marc Vital ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
The Cross ◽  
Muscle Contractile

scholarly journals Postoperative Outcome of Lumbar Spinal Canal Stenosis after Fenestration: Correlation with Changes in Intradural and Extradural Tube on Magnetic Resonance Imaging

2002 ◽  
Vol 10 (2) ◽  
pp. 136-143 ◽  
Author(s):  
K Yamazaki ◽  
S Yosida ◽  
T Ito ◽  
T Toba ◽  
S Kato ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Symptoms ◽  
Cauda Equina ◽  
Clinical Results ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
The Cross

Purpose. To evaluate the serial changes in clinical results and the intradural and extradural spaces on magnetic resonance imaging (MRI) after bilateral fenestration in 48 patients with lumbar spinal canal stenosis (LSCS). Methods. A prospective interventional study was performed to study the clinical results, magnetic resonance imaging scans among patients who were followed up for more than 3 years. Results. All patients showed improvement in clinical symptoms after operation, but clinical results deteriorated in 9 (19%) patients. Postoperative MRI scans showed that poor dural tube expansion, grouping of the cauda equina, and decrease in the cross-sectional area of the dural tube were factors associated with poor outcomes. The cross-sectional area of the dural tube and images of the cauda equina observed by MRI, before and after fenestration and during follow-up, reflected changes in clinical symptoms involving decompressed segments. Conclusion. Serial changes in the cross-sectional area of the dural tube and images of the cauda equina observed preoperatively, postoperatively, and on follow-up by MRI may be useful when evaluating patients' condition before and after operation. It is also useful for predicting outcomes.

scholarly journals Evaluation of Muscular Atrophy and Fatty Infiltration Using Time-zero Magnetic Resonance Imaging as Baseline Data, After Rotator Cuff Repair

2019 ◽  
Vol 22 (2) ◽  
pp. 70-78 ◽  
Author(s):  
Hyoung Bok Kim ◽  
Jae Chul Yoo ◽  
Jeung Yeol Jeong
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rotator Cuff ◽  
Cross Sectional Area ◽  
Low Grade ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Time Zero ◽  
The Cross

Background: This study evaluated postoperative changes in the supraspinatus from time-zero to 6 months, using magnetic resonance imaging (MRI). We hypothesized that restoration of the musculotendinous unit of the rotator cuff by tendon repair immediately improves the rotator cuff muscle status, and maintains it months after surgery.Methods: Totally, 76 patients (29 men, 47 women) with rotator cuff tears involving the supraspinatus tendon who underwent arthroscopic rotator cuff repairs were examined. MRI evaluation showed complete repair with intact integrity of the torn tendon at both time-zero and at 6 months follow-up. All patients underwent standardized MRI at our institution preoperatively, at 1 or 2 days postoperative, and at 6 months after surgery. Supraspinatus muscular (SSP) atrophy (Thomazeau grade) and fatty infiltrations (Goutallier stage) were evaluated by MRI. The cross-sectional area of SSP in the fossa was also measured.Results: As determined by MRI, the cross-sectional area of SSP significantly decreased 11.41% from time-zero (immediate repair) to 6 months post-surgery, whereas the Goutallier stage and Thomazeau grade showed no significant changes (<i>p</i><0.01). Furthermore, compared to the preoperative MRI, the postoperative MRI at 6 months showed a no statistically significant increase of 8.03% in the crosssectional area. In addition, morphological improvements were observed in patients with high grade Goutallier and Thomazeau at timezero, whereas morphology of patients with low grade factors were almost similar to before surgery.Conclusions: Our results indicate that cross-sectional area of the initial repair appears to decrease after a few months postoperatively, possibly due to medial retraction or strained muscle.

Cross-Sectional Area of the Stenotic Lumbar Dural Tube Measured from the Transverse Views of Magnetic Resonance Imaging

1994 ◽  
Vol 7 (5) ◽  
pp. 388???393 ◽  
Author(s):  
Chiaki Hamanishi ◽  
Noboru Matukura ◽  
Masahiko Fujita ◽  
Mituo Tomihara ◽  
Seisuke Tanaka
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional

P90 Magnetic resonance imaging and sciatic nerve cross-sectional area in inherited and inflammatory neuropathies

2010 ◽  
Vol 20 ◽  
pp. S29
Author(s):  
C.D.J. Sinclair ◽  
M.A. Miranda ◽  
P. Cowley ◽  
J.M. Morrow ◽  
I. Davagnanam ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Sciatic Nerve ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Inflammatory Neuropathies
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