Clinical trial NCT02061163: Contrast-Enhanced Ultrasound in Human Crohn's Disease
Official title: Evaluation of Contrast-Enhanced Ultrasound in Human Crohn's Disease
Study type: INTERVENTIONAL
Overall status: WITHDRAWN
Phase: PHASE1
PHASE2
Conditions: Crohn's Disease
Lead sponsor: University of Michigan
Sponsor class: OTHER
First posted: 2014-02-12
Enrollment: 0
Sex: ALL
Minimum age (years): 10
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: DIAGNOSTIC

Brief summary: To determine if contrast enhanced ultrasound (CEUS) and shear wave elastography can accurately diagnose bowel wall inflammation and fibrosis in patients with known Crohn's disease.

Detailed description: Crohn's disease (CD) is an inflammatory condition that affects the intestinal tract (large and small bowels). Some patients with CD may get swelling of the intestinal tract (inflammation) or scarring of the intestinal tract (fibrosis). Fibrosis develops because of chronic injury. Both inflammation (swelling) and fibrosis (scarring) can cause the bowel to narrow, which can lead to the bowel becoming blocked. The long-term goal of this project is to develop new noninvasive radiology imaging tests that can show the difference between bowel wall inflammation and fibrosis. Currently there are no imaging tests that can do this reliably.

Current imaging methods (CT and MRI) that are ordered to help diagnose and follow-up CD are excellent at showing inflammation, but are not accurate for finding fibrosis. CT also exposes patients to small amounts of radiation, and both CT and MRI are costly. We are therefore studying ultrasound imaging, as it is more cost-effective and does not expose patients to radiation. CEUS uses microbubbles in a solution that are injected into a vein in one of the arms. This allows doctors to see the blood flow to parts of the body. This microbubble contrast agent (dye) is called Optison. Another imaging method, called shear wave elastography, uses sound waves to noninvasively measure the stiffness of structures in the body.

It is important to be able to tell the difference between inflammation and fibrosis in Crohn's disease, because narrowing of the bowel due to inflammation generally responds well to medications, whereas narrowing caused by fibrosis does not respond well to medications and may require surgery.

Eligibility criteria: Inclusion Criteria:

* Patients 10 years of age and older
* Have been diagnosed with small bowel Crohn's disease
* Are receiving medical therapy for Crohn's disease
* Are scheduled for surgery (bowel resection) OR
* Are scheduled for a clinically-indicated MR enterography (MRE)/MRI exam.

Exclusion Criteria:

* Patients under the age of 10
* Are pregnant or breast feeding
* Are significantly overweight - BMI \>35-40
* Have an inability to understand the consent
* Have prior allergic-like reaction or other adverse reaction to microbubble contrast agent
* Hypersensitivity to perflutren, blood, blood products or albumen
* Have a cardiac shunt
* Known unstable cardiac condition such as history of a heart attach, irregular heartbeat, congestive heart failure, etc.
* Known acute or chronic kidney disease, moderate/severe lung disease or acute or chronic liver disease

Primary outcomes:
measure: Evaluation of bowel wall inflammation and fibrosis in patients with Crohn's disease using CEUS
timeFrame: 2 years
Secondary outcomes:
Other outcomes:
Locations:
city: Ann Arbor
country: United States
facility: University of Michigan C.S. Mott Children's Hospital
state: Michigan
Study officials:
References: