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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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Glenoid bone loss: assessment with MR imaging.

Ryan K L Lee1, James F Griffith, Mabel M P Tong

  • 1Department of Imaging and Interventional Radiology and Department of Orthopedics and Traumatology, the Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing St, Shatin, NT, Hong Kong SAR, China. leekalok2909@yahoo.com.hk

Radiology
|January 19, 2013
PubMed
Summary

Magnetic resonance (MR) imaging and computed tomography (CT) show excellent agreement for measuring glenoid bone loss. MR imaging is nearly as accurate as CT for assessing bone loss, especially using glenoid width.

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Area of Science:

  • Orthopedics
  • Radiology
  • Medical Imaging

Background:

  • Anterior shoulder dislocation frequently results in glenoid bone loss.
  • Accurate measurement of glenoid bone loss is crucial for treatment planning.
  • Comparing imaging modalities for glenoid bone loss assessment is essential.

Purpose of the Study:

  • To evaluate the agreement between magnetic resonance (MR) imaging, computed tomography (CT), and arthroscopy in measuring glenoid bone loss.
  • To compare the accuracy of MR imaging and CT with arthroscopy as the reference standard.

Main Methods:

  • 176 patients with anterior shoulder dislocation underwent MR imaging and CT.
  • Glenoid bone loss was measured using anterior straight line length, glenoid width, and best-fit circle methods.
  • 65 patients underwent arthroscopy for comparison; inter- and intrareader reproducibility of MR imaging was assessed.

Main Results:

  • Excellent correlation was found between CT and MR imaging for all measurements (r = 0.95–0.97).
  • Correlation between CT and arthroscopy (r = 0.91) was marginally better than MR imaging and arthroscopy (r = 0.84).
  • MR imaging demonstrated excellent inter- and intrareader reproducibility (R = 0.90–0.95).

Conclusions:

  • MR imaging is a reliable tool for assessing glenoid bone loss in anterior shoulder dislocation.
  • MR imaging shows high agreement with CT and acceptable agreement with arthroscopy.
  • MR imaging, particularly using glenoid width, offers accuracy comparable to CT for glenoid bone loss measurement.