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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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Mitral Valve Prolapse II: Assessment and Management

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Do repetitive Valsalva maneuvers change maximum prolapse on dynamic MRI?

Julie A Tumbarello1, Yvonne Hsu, Christina Lewicky-Gaupp

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Maximal anterior vaginal wall prolapse may require multiple attempts to visualize. Dynamic MRI showed significant prolapse increases with sequential Valsalva maneuvers in women with pelvic floor disorders.

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Area of Science:

  • Urogynecology
  • Pelvic Floor Disorders
  • Medical Imaging

Background:

  • Anterior vaginal wall prolapse is a common condition affecting women's pelvic health.
  • Accurate assessment of prolapse severity is crucial for effective treatment planning.

Purpose of the Study:

  • To quantify changes in anterior vaginal wall prolapse during sequential Valsalva maneuvers using dynamic MRI.
  • To determine if multiple attempts are needed to achieve maximal prolapse during imaging.

Main Methods:

  • Dynamic mid-sagittal MRI scans were obtained during three maximal Valsalva efforts in 40 women with anterior vaginal wall prolapse.
  • Bladder descent was compared between the first, second, and third Valsalva attempts.

Main Results:

  • Forty percent of women experienced a >2 cm increase in prolapse size from the first to third Valsalva attempt.
  • Ninety-five percent of women showed increased prolapse extension with a third Valsalva maneuver.

Conclusions:

  • Maximal anterior compartment prolapse may not be evident on the first Valsalva attempt during dynamic MRI.
  • Similar to clinical examination, multiple Valsalva efforts may be necessary to fully assess pelvic floor prolapse severity.