Kress B, Buhl Y, Anders L, Stippich C, Palm F, Bähren W, Sartor K
Division of Neuroradiology, Department of Neurology, University of Heidelberg, Medical Center, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
Dentomaxillofac Radiol. 2004 Jul;33(4):241-4. doi: 10.1259/dmfr/33063878.
To assess whether it is possible to measure tooth vitality using magnetic resonance imaging (MRI).
Signal intensity measurements were conducted using T(1) and T(2) sequences at the region of interest in 211 teeth (35 patients).
Clinical findings showed that 17.3% of the teeth were avital, whereas 82.7% were found to be vital. Neither the T(2) sequence nor the non-contrast-enhanced T(1) sequence showed significant differences between vital and avital teeth. However, the contrast-enhanced sequence and, in particular, a comparison of signal intensities between the non-contrast-enhanced T(1) sequence and the contrast-enhanced sequence showed a significant difference between vital and avital teeth.
Contrast-enhanced MRI enables us to draw conclusions on pulpal perfusion in vivo.
评估使用磁共振成像（MRI）测量牙齿活力是否可行。
对35例患者的211颗牙齿的感兴趣区域，使用T(1)和T(2)序列进行信号强度测量。
临床检查发现，17.3%的牙齿无活力，而82.7%的牙齿有活力。T(2)序列和非增强T(1)序列在有活力和无活力的牙齿之间均未显示出显著差异。然而，增强序列，特别是非增强T(1)序列与增强序列之间的信号强度比较，在有活力和无活力的牙齿之间显示出显著差异。
增强MRI使我们能够在体内得出关于牙髓灌注的结论。
