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 Jhaveri, K. S.
Right arrow Articles by Haider, M. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Jhaveri, K. S.
Right arrow Articles by Haider, M. A.
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?

Comparison of CT Histogram Analysis and Chemical Shift MRI in the Characterization of Indeterminate Adrenal Nodules

Kartik S. Jhaveri1, Fenella Wong2, Sangeet Ghai3 and Masoom A. Haider1

1 Department of Medical Imaging, University Health Network and Mount Sinai Hospital, Princess Margaret Hospital, 610 University Ave., Toronto, ON M5G 2M9, Canada.
2 Department of Diagnostic Radiology, Christie Hospital NHS Trust, Withington, Manchester M20 4BX, United Kingdom.
3 Main X-ray Department, City General Hospital, Stoke-on-Trent ST4 6QG, United Kingdom.


Figure 1
View larger version (141K):

[in a new window]
  		Fig. 1A —Adrenal adenoma in 31-year-old man. Unenhanced CT scan shows region of interest (ROI) has attenuation of 15 H.

 

Figure 2
View larger version (38K):

[in a new window]
  		Fig. 1B —Adrenal adenoma in 31-year-old man. CT histogram analysis reveals ROI has significant number of negative pixels (> 10%).

 

Figure 3
View larger version (129K):

[in a new window]
  		Fig. 2A —Adrenal metastasis in 58-year-old man. Unenhanced CT shows region of interest (ROI) has attenuation of 28 H.

 

Figure 4
View larger version (38K):

[in a new window]
  		Fig. 2B —Adrenal metastasis in 58-year-old man. No negative pixels were recorded in ROI on CT histogram analysis.

 

Figure 5
View larger version (8K):

[in a new window]
  		Fig. 3 —Scatterplot shows correlation between decreasing CT attenuation and increasing percentage of negative pixels. Note that no nonadenomas (gray squares) show more than 10% negative pixels. Significant overlap exists below threshold of 10% negative pixels (left of vertical dashed line). Black diamonds = adenomas.

 

Figure 6
View larger version (10K):

[in a new window]
  		Fig. 4 —Scatterplot shows MRI characterizes greater number of nodules as adenoma (black diamonds) than CT histogram analysis: upper left area of graph formed between vertical dashed line at 10% negative pixel threshold of CT histogram and horizontal dotted line of 20% MR signal intensity drop shows additional nodules characterized on MRI. Gray squares = nonadenomas.

 

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.