AJR
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Watanabe, A.
Right arrow Articles by Anderson, S. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Watanabe, A.
Right arrow Articles by Anderson, S. E.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
Hotlight (NEW!)
Right arrow
What's Hotlight?

Classification of Intervertebral Disk Degeneration with Axial T2 Mapping

Atsuya Watanabe1,2,3, Lorin M. Benneker4, Chris Boesch1, Tomoko Watanabe5, Takayuki Obata6 and Suzanne E. Anderson2

1 Department of Clinical Research, Unit for MR Spectroscopy and Methodology, University of Bern, CH-3010 Bern, Switzerland.
2 Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University of Bern, Bern, Switzerland.
3 Present address: Department of Radiology, Teikyo University Chiba Medical Center, 3426-3 Anesaki, Ichihara, Chiba 299-0111, Japan.
4 Department of Orthopaedic Surgery, Inselspital, University of Bern, Bern, Switzerland.
5 Tissue Engineering and Osteoarticular Research Unit, Institute of Pathology, University of Bern, Bern, Switzerland.
6 Department of Biophysics, Molecular Imaging Center, National Institute of Radiological Sciences, Chiba, Japan.


Figure 1
View larger version (98K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 1A —Representative color-coded T2 maps. Color-coded T2 maps of intervertebral disks obtained with axial T2 mapping classification system show grade I in 23-year-old woman (A), grade II in 27-year-old man (B), grade III in 25-year-old man (C), and grade IV in 34-year-old man (D). Change of T2, loss of homogeneity in signal intensity, and loss of distinction between nucleus pulposus and annulus fibrosus were generally observed in degenerative intervertebral disks.

 

Figure 2
View larger version (98K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 1B —Representative color-coded T2 maps. Color-coded T2 maps of intervertebral disks obtained with axial T2 mapping classification system show grade I in 23-year-old woman (A), grade II in 27-year-old man (B), grade III in 25-year-old man (C), and grade IV in 34-year-old man (D). Change of T2, loss of homogeneity in signal intensity, and loss of distinction between nucleus pulposus and annulus fibrosus were generally observed in degenerative intervertebral disks.

 

Figure 3
View larger version (98K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 1C —Representative color-coded T2 maps. Color-coded T2 maps of intervertebral disks obtained with axial T2 mapping classification system show grade I in 23-year-old woman (A), grade II in 27-year-old man (B), grade III in 25-year-old man (C), and grade IV in 34-year-old man (D). Change of T2, loss of homogeneity in signal intensity, and loss of distinction between nucleus pulposus and annulus fibrosus were generally observed in degenerative intervertebral disks.

 

Figure 4
View larger version (98K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 1D —Representative color-coded T2 maps. Color-coded T2 maps of intervertebral disks obtained with axial T2 mapping classification system show grade I in 23-year-old woman (A), grade II in 27-year-old man (B), grade III in 25-year-old man (C), and grade IV in 34-year-old man (D). Change of T2, loss of homogeneity in signal intensity, and loss of distinction between nucleus pulposus and annulus fibrosus were generally observed in degenerative intervertebral disks.

 

Figure 5
View larger version (20K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 2 —Relationship between degenerative grades with axial T2 mapping and participant age. Degenerative grade increased with increasing age.

 

Figure 6
View larger version (12K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 3 —Relationship between degenerative grade with axial T2 mapping and disk level. Degenerative grade was highest at L5–S1 level, followed by grades at L4–L5 and L3–L4.

 

Figure 7
View larger version (8K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 4 —Relationship between T2 values of nucleus pulposus and participant age. T2 values decreased significantly with increasing age (p < 0.05).

 

Figure 8
View larger version (8K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 5 —Relationship between T2 values of annulus fibrosus and participant age. T2 values increased slightly with increasing age; however, correlation was not significant.

 

Figure 9
View larger version (23K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 6 —Relationship between T2 value of nucleus pulposus and degenerative grade classified with each of three classification systems. Bar indicates SD. Asterisk indicates p < 0.05.

 

Figure 10
View larger version (24K):
[in this window]
[in a new window]
[as a PowerPoint slide]
  		Fig. 7 —Relationship between T2 value of annulus fibrosus and degenerative grade classified with each of three classification systems. Bar indicates SD. Asterisk indicates p <0.05.

 

Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?



HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2007 by the American Roentgen Ray Society.