Comparing 3T T1-Weighted Sequences in Identifying Hyperintense Punctate Lesions in Preterm Neonates
| Autor: | Massimo Caulo, A. Tartaro, Domenico Tortora, Rita Salomone, S. Domizio, Peter A. Mattei, Antonio Raffaele Cotroneo, Valentina Panara |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Male
Pathology medicine.medical_specialty Leukomalacia Periventricular Inversion recovery Central region Pediatrics Lesion medicine T1 weighted Humans Radiology Nuclear Medicine and imaging Retrospective Studies Periventricular leukomalacia business.industry Infant Newborn Brain medicine.disease Magnetic Resonance Imaging Linear Models Female Neurology (clinical) medicine.symptom Mr images business Infant Premature |
| Zdroj: | AJNR Am J Neuroradiol |
| Popis: | BACKGROUND AND PURPOSE: The loss of contrast on T1-weighted MR images at 3T may affect the detection of hyperintense punctate lesions indicative of periventricular leukomalacia in preterm neonates. The aim of the present study was to determine which 3T T1-weighted sequence identified the highest number of hyperintense punctate lesions and to explore the relationship between the number of hyperintense punctate lesions and clinical outcome. MATERIALS AND METHODS: The presence of hyperintense punctate lesions was retrospectively evaluated in 200 consecutive preterm neonates on 4 axial T1-weighted sequences: 3-mm inversion recovery and spin-echo and 1- and 3-mm reformatted 3D-fast-field echo. Statistically significant differences in the number of hyperintense punctate lesions were evaluated by using a linear mixed-model analysis. Logistic regression analysis was used to assess the relation between the number of hyperintense punctate lesions and neuromotor outcome at 3 months. RESULTS: Thirty-one neonates had at least 1 hyperintense punctate lesion indicative of periventricular leukomalacia in at least 1 of the 4 sequences. The 1-mm axial reformatted 3D-fast-field echo sequence identified the greatest number of hyperintense punctate lesions ( P < .001). No statistically significant differences were found among the 3-mm T1-weighted sequences. The greater number of hyperintense punctate lesions detected by the 1-mm reformatted T1 3D-fast-field echo sequence in the central region of the brain was associated with a worse clinical outcome. CONCLUSIONS: At 3T, the 1-mm axial reformatted T1 3D-fast-field echo sequence identified the greatest number of hyperintense punctate lesions in the central region of preterm neonate brains, and this number was associated with neuromotor outcome. FFE : fast-field echo IR : inversion recovery HPL : hyperintense punctate lesion ICC : intraclass correlation coefficient PN : preterm neonate PVL : periventricular leukomalacia SE : spin-echo |
| Databáze: | OpenAIRE |
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