64列Multi-detector CT によるインプラントの画像診断： 高速容積撮影の有用性の評価

抄録

Computed tomography (CT) is a useful diagnostic imaging modality of dental implants for evaluating the location of the mandibular canal, maxillary sinus and quality of jaw bone in recent clinical situations. However, there is little awareness of the usefulness of highspeed volume scanning for dental implants using 64-row multi-detector computed tomography (MDCT).
The purpose of this study was to evaluate the usefulness of high-speed volume scanning for dental implants using 64-row multi-detector computed tomography (MDCT) in comparison with single slice CT regarding with motion artifacts.
The subjects consisted of 136 patients (64 men, 72 women, mean age 55.2 years, range 34-65 years) on MDCT mandibular images and 120 patients (53 men, 67 women, mean age 52.2 years, range 29-69 years) on single slice CT mandibular images.
These CT images were compared with reconstructed MDCT images and reconstructed single slice CT images.
Reconstructed MDCT mandibular images contained no images in motion artifacts. Reconstructed single slice CT mandibular images demonstrated motion artifacts in 20% of all 120 patients.
Reconstructed MDCT images were superior to single slice CT images on imaging diagnosis for the evaluation of motion artifacts (p＞0.0001). Reconstructed mandibular images with 64-section MDCT provide useful diagnostic images for dental implants.
It is suggested that 64-row MDCT is beneficial for reducing motion artifacts on dental implants.