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KMID : 1103720120670060473
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Journal of the Korean Society of Radiology
2012 Volume.67 No. 6 p.473 ~ p.481
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Diagnostic Value of Multidetector Computed Tomography in Radial Head or Neck Fractures
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Cho Hyun-Hae
Hwang Ji-Young
Lee Sun-Wha
Shin Sang-Jin
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Abstract
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Purpose: To evaluate the diagnostic value of multidetector computed tomography (MDCT) in radial head or neck fracture, and to evaluate factors that affect MDCT image quality.
Materials and Methods: Sixty-six radial fractures in 65 patients, who underwent both radiography and MDCT, were included. Detection of fracture and classification of types were recorded for each modality. Patients were divided into the good (A) and poor (B) image quality groups, and recorded the factors, such as arm positioning, flexion angle, and cancellous bone density.
Results: The detection rate of fracture showed no significant difference between the two modalities. However, classification of the fracture type was significantly accurate by MDCT (p < 0.0001). Eight cases were only detected on MDCT and three cases were only detected on radiography. Fracture type was discordant in 11 cases. MDCT scanning with raising arm (p < 0.0001), with lesser flexion angle (p = 0.004), and higher cancellous bone density (p = 0.010) showed better image quality.
Conclusion: Radiography is a good primary tool for detecting radial head or neck fracture. However, MDCT can be an additional tool for classifying the fracture type and cases with negative radiographic findings. Arm positioning, flexion angle, and cancellous bone density affect MDCT image quality.
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KEYWORD
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Multidetector CT, Image Quality, Radius, Fracture
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