Baraliakos X, van der Heijde D, Braun J, Landewe RB OMERACT magnetic resonance imaging initiative on structural and inflammatory lesions in ankylosing spondylitis--report of a special interest group at OMERACT 10 on sacroiliac joint and spine lesions. J Rheumatol. 2011 Sep;38(9):2051-4. doi: 10.3899/jrheum.110423.
Bredella MA, Steinbach LS, Morgan S, Ward M, Davis JC MRI of the sacroiliac joints in patients with moderate to severe ankylosing spondylitis. AJR Am J Roentgenol. 2006 Dec;187(6):1420-6. doi: 10.2214/AJR.05.1423.
Hermann KG, Bollow M Magnetic resonance imaging of sacroiliitis in patients with spondyloarthritis: correlation with anatomy and histology. Rofo. 2014 Mar;186(3):230-7. doi: 10.1055/s-0033-1350411. Epub 2013 Sep 2.
Oostveen J, Prevo R, den Boer J, van de Laar M Early detection of sacroiliitis on magnetic resonance imaging and subsequent development of sacroiliitis on plain radiography. A prospective, longitudinal study. J Rheumatol. 1999 Sep;26(9):1953-8.
Sudol-Szopinska I, Urbanik A Diagnostic imaging of sacroiliac joints and the spine in the course of spondyloarthropathies. Pol J Radiol. 2013 Apr;78(2):43-9. doi: 10.12659/PJR.889039.
Veloso FT, Carvalho J, Magro F Immune-related systemic manifestations of inflammatory bowel disease. A prospective study of 792 patients. J Clin Gastroenterol. 1996 Jul;23(1):29-34. doi: 10.1097/00004836-199607000-00009.
Weber U, Lambert RG, Ostergaard M, Hodler J, Pedersen SJ, Maksymowych WP The diagnostic utility of magnetic resonance imaging in spondylarthritis: an international multicenter evaluation of one hundred eighty-seven subjects. Arthritis Rheum. 2010 Oct;62(10):3048-58. doi: 10.1002/art.27571.
Wills JS, Lobis IF, Denstman FJ Crohn disease: state of the art. Radiology. 1997 Mar;202(3):597-610. doi: 10.1148/radiology.202.3.9051003. No abstract available.
Frequency of Sacroiliitis in Inflammatory Bowel Disease Patients Using MRI
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
