MR Guided Focused Ultrasound Surgery in the Treatment of Uterine Fibroids

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00166270
Recruitment Status : Completed
First Posted : September 14, 2005
Last Update Posted : March 29, 2018
Information provided by (Responsible Party):

Brief Summary:
This is a prospective, nonrandomized, multi-center study to evaluate the safety and effectiveness of ExAblate in the treatment of uterine fibroids. All patients will be treated and then followed for 36 months to evaluate the change in their fibroid symptoms.

Condition or disease Intervention/treatment Phase
Uterine Fibroids Device: ExAblate 2000 Not Applicable

Detailed Description:

After the PMA Panel, the sponsor was requested to conduct a post-approval study. The objective of this study is to gather additional data to evaluate the safety and long term effectiveness of focused ultrasound treatment, and to include a larger cohort of African-American patients. Patients will be treated following the approved commercial treatment guidelines.

Uterine leiomyoma (fibroids) are the most common neoplasms of the female pelvis. These benign tumors are generally oval in shape, and often highly vascular. On T2 weighted MR imaging exams, or T1 exams with contrast, uterine fibroids are easily identifiable. They occur in 20-25% of women of reproductive age and can cause a variety of problems generally described as either bleeding or mass effects from the fibroid. In general, these symptoms can be classified into two categories:

  1. heavy menstrual bleeding, defined as bleeding on heavy days requiring a change of sanitary wear every 2 hours or less, significant clot passage, flooding, substantial prolongation of menstrual periods compared with the patient's prior experience, or anemia.
  2. pelvic pain or pressure, heaviness or discomfort, or similar symptoms in the back, flank or leg attributable to the bulk of the fibroid, urinary frequency, increase in nocturia, difficulty voiding or compression of the ureters with hydronephrosis.

Measures of the clinical success of patients who elect treatment of fibroids are generally subjective, and evaluated by the patient in terms of improvement in the initial symptoms that caused her to seek treatment (decrease in pain, bladder or bowel symptoms, or reduction in vaginal bleeding), while experiencing a minimum of co-morbidities from the treatment itself.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 70 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Post Approval Study: MR Guided Focused Ultrasound Surgery in the Treatment of Uterine Fibroids
Study Start Date : January 2005
Actual Primary Completion Date : January 2009
Actual Study Completion Date : January 2009

Arm Intervention/treatment
Experimental: 1 Device: ExAblate 2000

Primary Outcome Measures :
  1. Measures of the clinical success of patients who elect treatment of fibroids are generally subjective, and evaluated by the patient in terms of improvement. [ Time Frame: Within 1 month of Treatment ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Women who present with symptomatic uterine fibroids and are not seeking treatment for the reason of improving fertility.
  • Able and willing to give consent and able to attend all study visits.
  • Patient is pre or peri-menopausal (within 12 months of last menstrual period).
  • Able to communicate sensations during the ExAblate procedure.
  • Uterine fibroids, which are device accessible (i.e., positioned in the uterus such that they can be accessed without being shielded by bowel or bone).
  • Fibroids(s) clearly visible on non-contrast MRI.

Exclusion Criteria:

  • Metallic implants that are incompatible with MRI
  • Sensitive to MRI contrast agents
  • Severe claustrophobia that would prevent completion of procedure in MR unit
  • Who are pregnant or desire to become pregnant in the future. Pregnancies following ExAblate treatment could be dangerous for both mother and fetus.
  • Pedunculated fibroids
  • Active pelvic inflammatory disease (PID)
  • Active local or systemic infection
  • Known or suspected pelvic carcinoma or pre-malignant conditions, including sarcoma and adenomatous hyperplasia
  • Intrauterine device (IUD) anywhere in the treatment path
  • Dermoid cyst of the ovary anywhere in the treatment path
  • Extensive abdominal scarring that cannot be avoided by redirection of the beam (e.g., due to Caesarean section or repeated abdominal surgeries)
  • Undiagnosed vaginal bleeding

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00166270

United States, California
Radnet Management
Los Angeles, California, United States, 90025
United States, Florida
University MRI
Boca Raton, Florida, United States, 33431
United States, Massachusetts
Brigham & Women's Hospital
Boston, Massachusetts, United States, 02115
Lahey Clinic
Burlington, Massachusetts, United States, 01805
United States, New Jersey
Voorhees, New Jersey, United States, 08043
United States, Texas
North Texas Uterine Fibroid Institute
Plano, Texas, United States, 75093
Sponsors and Collaborators
Principal Investigator: Phyllis Gee, M.D. North Texas UFI
Principal Investigator: Paul Curtis, M.D. Virtua
Principal Investigator: George Holland, M.D. Lahey Clinic
Principal Investigator: Dennis Sarti, M.D. Radnet Management
Principal Investigator: Fred Steinberg, M.D. Univeristy MRI
Principal Investigator: Elizabeth Stewart, M.D. Brigham and Women's Hospital

Additional Information:
Responsible Party: InSightec Identifier: NCT00166270     History of Changes
Other Study ID Numbers: UF014
First Posted: September 14, 2005    Key Record Dates
Last Update Posted: March 29, 2018
Last Verified: March 2018

Keywords provided by InSightec:
Uterine Fibroids

Additional relevant MeSH terms:
Neoplasms, Muscle Tissue
Neoplasms, Connective and Soft Tissue
Neoplasms by Histologic Type
Neoplasms, Connective Tissue
Connective Tissue Diseases