Document Detail


Rapidly reversible myocardial edema in patients with acromegaly: assessment with ultrafast T2 mapping in a single-breath-hold MRI sequence.
MedLine Citation:
PMID:  18492909     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: The purpose of this study was to use a single-breath-hold T2-mapping MRI sequence to evaluate the reversibility of myocardial edema in patients treated for acromegaly. SUBJECTS AND METHODS: Before and after treatment, 15 patients with acromegaly underwent myocardial T2 mapping with an experimental single-breath-hold black-blood fast spin-echo sequence. Myocardial T2 mapping with both a multiple-breath-hold fast spinecho sequence and the experimental sequence also was performed on 14 volunteers. T2 relaxation times were calculated with a standard linear least-squares fit applied to myocardial signal intensity. The T2 relaxation times of patients were compared with those of volunteers and correlated with levels of serum growth hormone and insulinlike growth factor 1. Left ventricular function and mass index were determined with cine MRI. RESULTS: T2 values before treatment were higher in patients (71 +/- 12 milliseconds) than in volunteers (55.9 +/- 3.6 milliseconds) (p = 0.0003). These T2 values in patients decreased soon after treatment (57.6 +/- 6.6 milliseconds, p = 0.0007). This reduction correlates with successful reduction of levels of serum growth hormone and insulinlike growth factor 1. In volunteers, myocardial T2 values did not vary significantly between the single-breath-hold sequence and the multiple-breath-hold fast spin-echo sequence. In patients, myocardial mass and left ventricular function did not differ significantly before and after treatment. CONCLUSION: Patients with acromegaly have increased myocardial T2 values, which decrease soon after treatment, reflecting reversible myocardial edema. T2 value is more sensitive than left ventricular mass index in the detection of early reversal of acromegalic cardiomyopathy. These results highlight the potential role of MRI in direct assessment of the tissular effects of growth hormone and insulinlike growth factor 1 and in evaluation of the efficacy of treatment.
Authors:
Hervé Gouya; Olivier Vignaux; Patrick Le Roux; Philippe Chanson; Jérome Bertherat; Xavier Bertagna; Paul Legmann
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Publication Detail:
Type:  Evaluation Studies; Journal Article    
Journal Detail:
Title:  AJR. American journal of roentgenology     Volume:  190     ISSN:  1546-3141     ISO Abbreviation:  AJR Am J Roentgenol     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-05-21     Completed Date:  2008-06-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708173     Medline TA:  AJR Am J Roentgenol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1576-82     Citation Subset:  AIM; IM    
Affiliation:
Department of Radiology, Hôpital Cochin, 27 rue du Faubourg Saint-Jacques, 75679 Paris Cedex 14, France. princetgouya@yahoo.fr
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MeSH Terms
Descriptor/Qualifier:
Acromegaly / complications*,  diagnosis*
Adult
Aged
Artifacts*
Edema / complications*,  diagnosis*
Female
Heart Diseases / complications*,  diagnosis*
Humans
Image Enhancement / methods
Male
Middle Aged
Motion
Reproducibility of Results
Respiratory Mechanics
Sensitivity and Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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