Magnetic Resonance Imaging of the Face & Bones

Status Completed

Clinical Trial Summary

This study will examine risk factors for facial wasting and avascular necrosis (AVN, a type of damage to the hip and other bones) in HIV-infected patients. The prevalence and natural history of AVN are also being evaluated. This study will use magnetic resonance imaging (MRI) to identify and monitor these conditions in patients with and without diagnosed AVN and to identify risk factors.

HIV-infected patients 18 years of age and older may be eligible for this study. HIV-infected children 4 years and older who can tolerate magnetic resonance imaging without sedation may also participate. Candidates may be screened for participation with a medical history, physical examination, blood and urine tests and possibly an electrocardiogram. Volunteers will provide a medical history and may have a brief physical examination. The study is currently closed to normal volunteers.

HIV-infected patients will have a MRI scan of the hip bone, and possibly other bones. Before the scan, they will provide a medical history by interview or questionnaire and have a physical examination. Those with diagnosed AVN will also have blood drawn to help identify potential risk factors for AVN. For the MRI, the patient lies flat on a stretcher that is moved into a cylindrical machine with a strong magnetic field. Earplugs are worn to muffle thumping sounds produced by radio waves that form the images. Patients can speak with a staff member via an intercom system at all times during the procedure. Repeat MRI studies will be requested at approximately 3- to 12-month intervals for up to 5 years, to see if changes occur with time. If medically indicated, additional diagnostic studies may be done to obtain information needed for appropriate medical care. Blood will be drawn periodically to examine immune parameters and viral blood levels. Patients with AVN may have periodic consultations with the rehabilitation medicine service and orthopedic surgeons.

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Clinical Trial Description

In this minimal risk protocol, up to 400 asymptomatic HIV-infected patients and 75 HIV-infected patients with AVN will have MRI scans of the hips in order to determine (1) if avascular necrosis (AVN) of the hip can be identified by MRI scans in HIV-infected patients, and (2) to follow the natural history of asymptomatic and symptomatic AVN of the hip. Study procedures include MRI of the hip, a minimal risk imaging study, and phlebotomy. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00001762
Study type	Observational
Source	National Institutes of Health Clinical Center (CC)
Contact
Status	Completed
Phase
Start date	February 23, 1998
Completion date	July 26, 2013

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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.

Magnetic Resonance Imaging of the Face and Bones

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms