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Matsuo K, Morioka I, Oda M, Kobayashi Y, Nakamachi Y, Kawano S, Nagasaka M, Koda T, Yokota T, Morikawa S, Miwa A, Shibata A, Minematsu T, Inoue N, Yamada H, Iijima K. Quantitative evaluation of ventricular dilatation using computed tomography in infants with congenital cytomegalovirus infection. Brain Dev 2014; 36:10-5. [PMID: 23312952 DOI: 10.1016/j.braindev.2012.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 12/19/2012] [Accepted: 12/20/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Infants with congenital cytomegalovirus infection (CCMVI) may develop brain abnormalities such as ventricular dilatation, which may potentially associate with sensorineural hearing loss. There is currently no recognized method for quantitative evaluation of ventricle size in infants with CCMVI. Our objectives were to establish a method for quantitative evaluation of ventricle size using computed tomography (CT) in infants with CCMVI, and determine a cut-off value associated with abnormal auditory brainstem response (ABR) early in life. DESIGN/SUBJECTS This study enrolled 19 infants with CCMVI and 21 non-infected newborn infants as a control group. Infants with CCMVI were divided into two subgroups according to ABR at the time of initial examination: normal ABR (11 infants) or abnormal ABR (8 infants). Ventricle size was assessed by calculating Evans' index (EI) and lateral ventricle width/hemispheric width (LVW/HW) ratio on brain CT images, and was compared among groups. A cut-off ventricle size associated with abnormal ABR was determined. RESULTS EI and LVW/HW ratio were significantly higher in the CCMVI with abnormal ABR group than the control and CCMVI with normal ABR groups. Cut-off values of 0.26 for EI and 0.28 for LVW/HW ratio had a sensitivity of 100% and 100%, respectively, and a specificity of 73% and 91%, respectively, for association with abnormal ABR. CONCLUSIONS We established a method for quantitative evaluation of ventricle size using EI and LVW/HW ratio on brain CT images in infants with CCMVI. LVW/HW ratio had a more association with abnormal ABR in the early postnatal period than EI.
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Affiliation(s)
- Kiyomi Matsuo
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Ichiro Morioka
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan.
| | - Mai Oda
- Department of Radiology, Kobe University Hospital, Kobe, Japan
| | - Yoko Kobayashi
- Department of Clinical Laboratory, Kobe University Hospital, Kobe, Japan
| | - Yuji Nakamachi
- Department of Clinical Laboratory, Kobe University Hospital, Kobe, Japan
| | - Seiji Kawano
- Department of Clinical Laboratory, Kobe University Hospital, Kobe, Japan
| | - Miwako Nagasaka
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Tsubasa Koda
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Tomoyuki Yokota
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Satoru Morikawa
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Akihiro Miwa
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Akio Shibata
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
| | - Toshio Minematsu
- Research Center for Disease Control, Aisenkai Nichinan Hospital, Nichinan, Japan
| | - Naoki Inoue
- Department of Virology I, National Institute of Infectious Disease, Tokyo, Japan
| | - Hideto Yamada
- Department of Obstetrics and Gynecology, Kobe University Hospital, Kobe, Japan
| | - Kazumoto Iijima
- Department of Pediatrics, Kobe University Hospital, Kobe, Japan
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