Small Bowel Follow-Through Indications

Current Role of SBFT in Clinical Practice

The American College of Radiology suggests that SBFT has significantly lower diagnostic yield compared to modern imaging modalities, detecting inflammatory lesions in only a portion of cases, and should not be used as a first-line diagnostic modality for suspected Crohn's disease or obscure gastrointestinal bleeding 1, 2, 3
The two-dimensional perspective of SBFT results in pathology being obscured by overlapping bowel loops, limiting its accuracy for detecting active disease, according to the American College of Radiology 3

The American College of Radiology recommends a water-soluble contrast challenge to predict success of conservative management in small bowel obstruction, involving administering a contrast agent with follow-up radiographs at 8 and 24 hours 4
Patients in whom contrast reaches the colon by 24 hours rarely require surgery, making this a useful triage tool, as suggested by the American College of Radiology 4
SBFT may have a limited role in delineating preoperative anatomy for surgeons, depending on institutional preference, though this use has markedly declined, according to the American College of Radiology 3
The European Crohn's and Colitis Organisation recommends capsule endoscopy as the initial small bowel imaging modality when ileocolonoscopy is negative and there are no obstructive symptoms or known stenosis 2, 5

The American Gastroenterological Association strongly recommends capsule endoscopy as the next diagnostic step after negative EGD and colonoscopy, ideally performed as soon as possible, for obscure gastrointestinal bleeding 1, 6
The European Crohn's and Colitis Organisation recommends MR enterography or CT enterography instead of SBFT when obstructive features or known stenosis are present 2, 5
Cross-sectional imaging with MRE or CTE is preferable to SBFT because these modalities can identify obstructive strictures, assess transmural disease extent, and detect extramural complications, according to the European Crohn's and Colitis Organisation 5, 7

Barium-based SBFT is contraindicated in suspected or confirmed bowel perforation due to risk of severe chemical peritonitis, as stated by the American College of Radiology 8
SBFT should not be performed when high-grade obstruction is suspected, as it provides inadequate information for surgical decision-making, according to the American College of Radiology 4
SBFT has poor specificity for Crohn's disease, as small lesions may represent other conditions, and the diagnostic yield of SBFT is particularly poor in patients with only abdominal pain or diarrhea without inflammatory biomarkers, as noted by the European Crohn's and Colitis Organisation 2, 7

The American Gastroenterological Association recommends starting with ileocolonoscopy with segmental biopsies as the first-line investigation when Crohn's disease is clinically suspected, with a strong recommendation despite very low quality evidence, based on superior diagnostic yield and lack of appropriate alternatives 9
If ileocolonoscopy is negative or inconclusive, the American Gastroenterological Association recommends proceeding to capsule endoscopy of the small bowel, which detected additional lesions in 50-86% of patients with known Crohn's disease and influenced disease management 9

Capsule endoscopy combined with ileocolonoscopy has a higher diagnostic yield (96-97%) compared to SBFT plus ileocolonoscopy (57.3%) for detecting inflammatory lesions in patients with suspected Crohn's disease 9