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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Chun, H.-K.
Right arrow Articles by Kim, C. K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Chun, H.-K.
Right arrow Articles by Kim, C. K.
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?

Preoperative Staging of Rectal Cancer: Comparison of 3-T High-Field MRI and Endorectal Sonography

Ho-Kyung Chun1, Dongil Choi2, Min Ju Kim2, Jongmee Lee2, Seong Hyeon Yun1, Seung Hoon Kim2, Soon Jin Lee2 and Chan Kyo Kim2

1 Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
2 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-ku, Seoul 135-710, South Korea.


Figure 1
View larger version (182K):

[in a new window]
  		Fig. 1A —52-year-old man with T1 rectal cancer (pT1) who underwent anterior resection with total mesorectal excision. Axial MR image from T2-weighted turbo spin-echo acquisition shows tumor (arrows) extending into muscular layer with loss of interface between submucosa and muscle layer. All three observers interpreted lesion as mT2, overstaging it.

 

Figure 2
View larger version (200K):

[in a new window]
  		Fig. 1B —52-year-old man with T1 rectal cancer (pT1) who underwent anterior resection with total mesorectal excision. Transverse endorectal sonographic image shows small hypoechoic mass (arrows) confined to mucosal and submucosal layers. All three observers correctly interpreted lesion as sT1.

 

Figure 3
View larger version (194K):

[in a new window]
  		Fig. 2A —70-year-old man with T2 rectal cancer (pT2) who underwent anterior resection with total mesorectal excision. Axial MR image from T2-weighted turbo spin-echo acquisition shows tumor (arrows) extending through muscle layer into perirectal tissue (arrowheads). All three observers interpreted lesion as mT3, overstaging it.

 

Figure 4
View larger version (219K):

[in a new window]
  		Fig. 2B —70-year-old man with T2 rectal cancer (pT2) who underwent anterior resection with total mesorectal excision. Transverse endorectal sonographic image shows hypoechoic mass (arrows) invading muscularis propria (arrowheads). Perirectal tissue is clear. All three observers correctly interpreted lesion as sT2.

 

Figure 5
View larger version (201K):

[in a new window]
  		Fig. 3A —51-year-old woman with T3 rectal cancer (pT3) who underwent anterior resection with total mesorectal excision. Axial MR image from T2-weighted turbo spin-echo acquisition shows tumor (arrows) extending into muscle layer, but perirectal tissue is clear. All three observers interpreted lesion as mT2, understaging it.

 

Figure 6
View larger version (202K):

[in a new window]
  		Fig. 3B —51-year-old woman with T3 rectal cancer (pT3) who underwent anterior resection with total mesorectal excision. Transverse endorectal sonographic image shows hypoechoic mass (arrows) penetrating into perirectal tissue (arrowheads). All three observers correctly interpreted lesion as sT3.

 

Figure 7
View larger version (8K):

[in a new window]
  		Fig. 4 —Graph shows composite receiver operating characteristic (ROC) curves for 3-T MRI (Figure 7) and endorectal sonography ({diamondsuit}) calculated with pooled data reviewed by three observers. Mean area under ROC curve (Az) indicates diagnostic accuracy for perirectal tissue invasion at endorectal sonography (Az = 0.982 ± 0.006) and at 3-T MRI (Az = 0.952 ± 0.010). Difference in mean Az was statistically significant (p = 0.028).

 

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 © 2006 by the American Roentgen Ray Society.