M H Vriesman1, C S de Jonge2, S Kuizenga-Wessel3, B Adler4, A Menys5, A J Nederveen6, J Stoker7, M A Benninga3, C Di Lorenzo8. 1. Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital/Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands. m.h.vriesman@amsterdamumc.nl. 2. Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location Academic Medical Center, University of Amsterdam, Amsterdam Gastroenterology & Metabolism, Amsterdam, The Netherlands. 3. Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital/Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands. 4. Department of Radiology, Nationwide Children's Hospital, Columbus, OH, USA. 5. Motilent, London, UK. 6. Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. 7. Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location Academic Medical Center, University of Amsterdam, Amsterdam Gastroenterology & Metabolism, Cancer Center Amsterdam, Amsterdam, The Netherlands. 8. Division of Gastroenterology, Hepatology and Nutrition, Nationwide Children's Hospital, Columbus, OH, USA.
Abstract
BACKGROUND: Colonic manometry is the current reference standard for assessing colonic neuromuscular function in children with intractable functional constipation (FC). Recently, cine magnetic resonance imaging (cine-MRI) has been proposed as a non-invasive alternative. We compared colonic motility patterns on cine-MRI with those obtained by manometry in children, by stimulating high-amplitude propagating contractions (HAPCs) with bisacodyl under manometric control while simultaneously acquiring cine-MRI. METHODS: After Institutional Review Board approval, adolescents with FC scheduled to undergo colonic manometry were included. A water-perfused 8-lumen catheter was used for colonic manometry recordings. After an intraluminal bisacodyl infusion, cine-MRI sequences of the descending colon were acquired for about 30 min simultaneously with colonic manometry. Manometry recordings were analysed for HAPCs. MRI images were processed with spatiotemporal motility MRI techniques. The anonymised motility results of both techniques were visually compared for the identification of HAPCs in the descending colon. RESULTS: Data regarding six patients (three males) were analysed (median age 14 years, range 12-17). After bisacodyl infusion, three patients showed a total of eleven HAPCs with colonic manometry. Corresponding cine-MRI recorded high colonic activity during two of these HAPCs, minimal activity during seven HAPCs, while two HAPCs were not recorded. In two of three patients with absent HAPCs on manometry, colonic activity was recorded with cine-MRI. CONCLUSIONS: Simultaneous acquisition of colonic cine-MRI and manometry in children with FC is feasible. Their motility results did not completely overlap in the identification of HAPCs. Research is needed to unravel the role of cine-MRI in this setting.
BACKGROUND: Colonic manometry is the current reference standard for assessing colonic neuromuscular function in children with intractable functional constipation (FC). Recently, cine magnetic resonance imaging (cine-MRI) has been proposed as a non-invasive alternative. We compared colonic motility patterns on cine-MRI with those obtained by manometry in children, by stimulating high-amplitude propagating contractions (HAPCs) with bisacodyl under manometric control while simultaneously acquiring cine-MRI. METHODS: After Institutional Review Board approval, adolescents with FC scheduled to undergo colonic manometry were included. A water-perfused 8-lumen catheter was used for colonic manometry recordings. After an intraluminal bisacodyl infusion, cine-MRI sequences of the descending colon were acquired for about 30 min simultaneously with colonic manometry. Manometry recordings were analysed for HAPCs. MRI images were processed with spatiotemporal motility MRI techniques. The anonymised motility results of both techniques were visually compared for the identification of HAPCs in the descending colon. RESULTS: Data regarding six patients (three males) were analysed (median age 14 years, range 12-17). After bisacodyl infusion, three patients showed a total of eleven HAPCs with colonic manometry. Corresponding cine-MRI recorded high colonic activity during two of these HAPCs, minimal activity during seven HAPCs, while two HAPCs were not recorded. In two of three patients with absent HAPCs on manometry, colonic activity was recorded with cine-MRI. CONCLUSIONS: Simultaneous acquisition of colonic cine-MRI and manometry in children with FC is feasible. Their motility results did not completely overlap in the identification of HAPCs. Research is needed to unravel the role of cine-MRI in this setting.
Entities:
Keywords:
Child; Colon; Constipation; Magnetic resonance imaging (cine); Manometry
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