Spectroscopic and perfusion magnetic resonance imaging predictors of progression in pediatric brain tumors
Φόρτωση...
Ημερομηνία
Συγγραφείς
Tzika, A. A.
Astrakas, L. G.
Zarifi, M. K.
Zurakowski, D.
Poussaint, T. Y.
Goumnerova, L.
Tarbell, N. J.
Black, P. M.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Cancer
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
BACKGROUND: In vivo biomarkers to predict progression of brain tumors are of great value in clinical practice. Therefore, the authors tested the hypothesis that changes in choline ratios by magnetic resonance (MR) spectroscopic imaging and/or relative tumor blood volume (rTBV) can differentiate clinically stable from progressive pediatric brain tumors. METHODS: MR spectroscopic imaging examinations were performed on 27 children with neuroglial brain tumors during therapy on a 1.5-Tesla MR system. Normalized rTBV values were measured in 11 of 27 patients. Each examination was rated as stable or progressive by clinical and imaging criteria. RESULTS: The percent change in normalized choline (Cho) was significantly greater in patients who had progressive examinations compared with patients who had stable examinations (P = 0.03). The percent change in Cho/N-acetylaspartate (Cho/NAA) was significantly higher in patients who had progressive outcomes (n = 18 patients) compared with patients who had stable outcomes (n = 32 patients; P < 0.001; sensitivity, 0.89; specificity, 0.88) and was identified as the most important prognostic indicator of tumor progression by logistic regression (likelihood ratio test, 33.4; P < 0.001). The odds of tumor progression were approximately 55 times greater for patients who showed at least a 20% change in Cho/NAA. rTBV distinguished between progressing and stable tumors (P = 0.03), and Cho/NAA and rTBV values showed interaction to predict the probability of a progressing clinical outcome. CONCLUSIONS: The percent change in Cho/NAA by proton MR spectroscopic imaging, assisted by rTBV, was useful in predicting tumor progression in children with brain tumors.
Περιγραφή
Λέξεις-κλειδιά
Adolescent, Aspartic Acid/*analogs & derivatives/analysis, Brain Chemistry, Brain Neoplasms/blood supply/*diagnosis, Child, Child, Preschool, Choline/analysis, Disease Progression, Female, Humans, Infant, *Magnetic Resonance Angiography, *Magnetic Resonance Spectroscopy, Male, Prognosis
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/15022293
http://onlinelibrary.wiley.com/store/10.1002/cncr.20096/asset/20096_ftp.pdf?v=1&t=h0krwptv&s=0a5422aff5bac01b8fc6bcad8f465344e59f3704
http://onlinelibrary.wiley.com/store/10.1002/cncr.20096/asset/20096_ftp.pdf?v=1&t=h0krwptv&s=0a5422aff5bac01b8fc6bcad8f465344e59f3704
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής