Patency or otherwise of mesenteric blood vessels should be assessed to exclude a vascular pathology such as arterial embolus or venous thrombosis. Presence of other extraluminal findings such as mesenteric oedema, fluid, fibro-fatty proliferation, abscess and fistula should also be carefully assessed. There are several limitations to our study. US evaluation using graded compression. Previous research 15 also suggested that CE and MR enteroclysis provided clearer pre-exam explanation of the modality than DBE, which probably could be explained by the fact that DBE is more unpredictable in advance.

From August 1, , to December 31, , patients with suspected or known small bowel diseases who underwent both CTE and DBE via anal examinations were prospectively enrolled in our study in Ruijin Hospital. Adequate jejunal distension is a recurrent challenge, but anecdotally this does not seem to have impaired diagnostic performance in our centre. First, we did not include CE in our research, which is considered as a small bowel examination with good tolerance and preference. Research of tolerance between other small bowel diagnostic techniques is also lacking. Table 3 Characterisation of mural thickening.

Previous research 15 also suggested that CE and MR enteroclysis provided clearer pre-exam explanation of the modality than DBE, which probably could be explained by the fact that DBE is more unpredictable in advance. Metastases, endometriosis, carcinoid and other inflammatory conditions in the peritoneum.

CT enterography: review of technique and practical tips

Preference for colonoscopy versus computerized tomographic colonography: Patients were asked to fill in a questionnaire 1 week after each examination. Improve bowel distension by active supervision and encouragement of oral contrast intake. Table 3 Characterisation of mural thickening. They were asked to fill out a questionnaire evaluating discomfort of the procedure enteroography each examination.


As discussed below, use of CT should be restricted in younger patients, particularly when not presenting acutely. CT findings and interobserver agreement for enteric phase CT enterography. Complications of Crohn’s disease may be due to transmural ulceration as noted aboveresulting thesiis abscesses, or formation of fistulae between bowel segments and other organs commonly the anterior abdominal wall, vagina or renal tract; Figure 6.

This is particularly relevant for clinicians, given that symptoms of pancreatic tumour can mimic luminal disease. Repeat scanning through the section of interest is often useful to distinguish stricture from a collapsed loop, but clearly the dose of ionising radiation imparted by CT makes this less applicable than during MRI enterography.

ct enterography thesis

One week after CTE, the patients were asked to complete the first questionnaire Figure S1 composed enterogdaphy two parts. Eight of these patients were confirmed to have positive findings on capsule endoscopy or subsequent clinical diagnosis, and CT enterography identified three lesions, which were undetected on capsule endoscopy [ 47 ]. Multiplanar helical CT enterography in patients with Crohn’s disease.

A more detailed description of the commoner small bowel diseases is provided below. Intestinal ischemia versus intramural hemorrhage: J Natl Cancer Inst. J Comput Assist Tomogr ; Importantly, there are data suggesting that CT may be complimentary to capsule endoscopy.

CT enterography: review of technique and practical tips

Questionnaires used in our study comparing tolerance between computed tomography enterography and double-balloon enteroscopy. Differential contrast enhancement of the bowel is a cardinal sign. Table 4 Symmetry of small bowel thickening.

ct enterography thesis

Gastrointestinal inflammation after bone marrow transplantation: We also retain data in relation to our visitors and registered users for internal purposes and for sharing information with our business partners. Maximal small bowel enhancement on MDCT has been reported by Schindera et al [ 17 ] to be 50 s after administration of intravenous contrast or 14 s after aortic peak enhancement. Capsule endoscopy, for example, is now generally accepted as first-line investigation for occult gastrointestinal haemorrhage, and increasingly advocated for diagnosis of early Crohn’s disease.


Boudiaf et al classified small bowel distension using a grading system based on diameters of jejunum and ileum graded 0—3 where 0 was for no distension and 3 was optimal distension. CT and radiologic evaluation. Zakeri N, Pollok RC. Technique The technique of CT enterography combines small bowel distension with a neutral or low-density oral contrast mixture and abdomino-pelvic CT examination during the enteric phase following administration of intravenous contrast. The usefulness of this sign in day-to-day clinical practice is debatable, however.

Transabdominal ultrasonography of the small bowel. In the authors’ experience, lack of portal venous phase imaging is rarely a problem for patients undergoing CT enterography because subtle liver metastases are rarely the target of imaging in this patient group. The safety of propofol infusion compared to midazolam and meperidine intravenous bolus for patients undergoing double balloon enteroscopy.

The reason why they had ctt preference for DBE should be studied in further research.