Abstract
Objectives: The aim of this study was to identify nonalcoholic fatty liver in obese children by magnetic resonance imaging (MRI) and to compare the findings with the data from ultrasonography and from clinical and laboratory testing. Patients and Methods: Sixty obese children, 6 to 14 years old, underwent hepatic MRI and abdominal ultrasonography. Biochemistry determinations included serum aminotransferases, lipid profile, glucose, and insulin. Anthropometry included body mass index, total and trunk fat, and fat-free mass obtained by dual-energy radiographic absorptiometry. Hepatic steatosis, judged as hepatic fat fraction by MRI, was ≥9%. Results: By MRI, 14 (23%) children had hepatic steatosis; of those, 5 had a fat fraction of 9% to 18%, and 9 had a fat fraction >18%. At univariate analysis, fat fraction was positively associated with being male, serum alanine aminotransferase, aspartate aminotransferase, and γ-glutamyltransferase, body mass index z score, insulin, systolic pressure, and total and trunk fat mass. Hepatic steatosis was independently associated with alanine aminotransferase (P18%. All of the children (n=9) with fat fraction ≥18% had increased liver echogenicity, and in 8 of them it was graded 2 or 3, but the MRI fat fraction ranged greatly (28%-45%). Conclusions: In obese children, nonalcoholic hepatic steatosis may be associated with the metabolic syndrome. Ultrasonography may be valuable in identifying high hepatic fat accumulation, but its ability to identify lower fat accumulation in the liver is scanty compared with MRI. JPGN 47:493-499, 2008.
| Original language | English |
|---|---|
| Pages (from-to) | 493-499 |
| Number of pages | 7 |
| Journal | Journal of Pediatric Gastroenterology and Nutrition |
| Volume | 47 |
| Issue number | 4 |
| Publication status | Published - Oct 2008 |
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Keywords
- Chemical-shift magnetic resonance imaging
- Fatty liver
- Obesity
- Ultrasound
ASJC Scopus subject areas
- Gastroenterology
- Pediatrics, Perinatology, and Child Health
Cite this
MRI in identifying hepatic steatosis in obese children and relation to ultrasonography and metabolic findings. / Pozzato, Carlo; Radaelli, Giovanni; Dall'Asta, Chiara; Verduci, Elvira; Villa, Anna; Villa, Chiara; Scaglioni, Silvia; Riva, Enrica; Pontiroli, Antonio E.; Cornalba, Gianpaolo; Giovannini, Marcello.
In: Journal of Pediatric Gastroenterology and Nutrition, Vol. 47, No. 4, 10.2008, p. 493-499.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - MRI in identifying hepatic steatosis in obese children and relation to ultrasonography and metabolic findings
AU - Pozzato, Carlo
AU - Radaelli, Giovanni
AU - Dall'Asta, Chiara
AU - Verduci, Elvira
AU - Villa, Anna
AU - Villa, Chiara
AU - Scaglioni, Silvia
AU - Riva, Enrica
AU - Pontiroli, Antonio E.
AU - Cornalba, Gianpaolo
AU - Giovannini, Marcello
PY - 2008/10
Y1 - 2008/10
N2 - Objectives: The aim of this study was to identify nonalcoholic fatty liver in obese children by magnetic resonance imaging (MRI) and to compare the findings with the data from ultrasonography and from clinical and laboratory testing. Patients and Methods: Sixty obese children, 6 to 14 years old, underwent hepatic MRI and abdominal ultrasonography. Biochemistry determinations included serum aminotransferases, lipid profile, glucose, and insulin. Anthropometry included body mass index, total and trunk fat, and fat-free mass obtained by dual-energy radiographic absorptiometry. Hepatic steatosis, judged as hepatic fat fraction by MRI, was ≥9%. Results: By MRI, 14 (23%) children had hepatic steatosis; of those, 5 had a fat fraction of 9% to 18%, and 9 had a fat fraction >18%. At univariate analysis, fat fraction was positively associated with being male, serum alanine aminotransferase, aspartate aminotransferase, and γ-glutamyltransferase, body mass index z score, insulin, systolic pressure, and total and trunk fat mass. Hepatic steatosis was independently associated with alanine aminotransferase (P18%. All of the children (n=9) with fat fraction ≥18% had increased liver echogenicity, and in 8 of them it was graded 2 or 3, but the MRI fat fraction ranged greatly (28%-45%). Conclusions: In obese children, nonalcoholic hepatic steatosis may be associated with the metabolic syndrome. Ultrasonography may be valuable in identifying high hepatic fat accumulation, but its ability to identify lower fat accumulation in the liver is scanty compared with MRI. JPGN 47:493-499, 2008.
AB - Objectives: The aim of this study was to identify nonalcoholic fatty liver in obese children by magnetic resonance imaging (MRI) and to compare the findings with the data from ultrasonography and from clinical and laboratory testing. Patients and Methods: Sixty obese children, 6 to 14 years old, underwent hepatic MRI and abdominal ultrasonography. Biochemistry determinations included serum aminotransferases, lipid profile, glucose, and insulin. Anthropometry included body mass index, total and trunk fat, and fat-free mass obtained by dual-energy radiographic absorptiometry. Hepatic steatosis, judged as hepatic fat fraction by MRI, was ≥9%. Results: By MRI, 14 (23%) children had hepatic steatosis; of those, 5 had a fat fraction of 9% to 18%, and 9 had a fat fraction >18%. At univariate analysis, fat fraction was positively associated with being male, serum alanine aminotransferase, aspartate aminotransferase, and γ-glutamyltransferase, body mass index z score, insulin, systolic pressure, and total and trunk fat mass. Hepatic steatosis was independently associated with alanine aminotransferase (P18%. All of the children (n=9) with fat fraction ≥18% had increased liver echogenicity, and in 8 of them it was graded 2 or 3, but the MRI fat fraction ranged greatly (28%-45%). Conclusions: In obese children, nonalcoholic hepatic steatosis may be associated with the metabolic syndrome. Ultrasonography may be valuable in identifying high hepatic fat accumulation, but its ability to identify lower fat accumulation in the liver is scanty compared with MRI. JPGN 47:493-499, 2008.
KW - Chemical-shift magnetic resonance imaging
KW - Fatty liver
KW - Obesity
KW - Ultrasound
UR - http://www.scopus.com/inward/record.url?scp=59649111378&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=59649111378&partnerID=8YFLogxK
M3 - Article
C2 - 18852643
AN - SCOPUS:59649111378
VL - 47
SP - 493
EP - 499
JO - Journal of Pediatric Gastroenterology and Nutrition
JF - Journal of Pediatric Gastroenterology and Nutrition
SN - 0277-2116
IS - 4
ER -