Lead RadioisotopesPeritoneal NeoplasmsPeritoneal DiseasesInflammatory Bowel DiseasesIrritable Bowel SyndromeShort Bowel SyndromeTunica IntimaCrohn DiseaseColitis, UlcerativeImage EnhancementContrast MediaColonPleural DiseasesIntestinal DiseasesTime FactorsMagnetic Resonance ImagingConstipationCarotid ArteriesTunica MediaDefecationTomography, X-Ray ComputedIntestinal MucosaDisease Models, AnimalHyperplasiaIntestine, Large