Influence of voxel size and scan field of view on fracture-like artifacts from gutta-percha obturated endodontically treated teeth on cone-beam computed tomography images

被引：18

作者：

Iikubo, Masahiro ^{[1
]}

Nishioka, Takashi ^{[1
]}

Okura, Shintaro ^{[2
]}

Kobayashi, Kaoru ^{[2
]}

Sano, Tsukasa ^{[2
]}

Katsumata, Akitoshi ^{[3
]}

Ariji, Eiichiro ^{[4
]}

Kojima, Ikuho ^{[1
]}

Sakamoto, Maya ^{[1
]}

Sasano, Takashi ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Dent, Dept Oral Diag, Sendai, Miyagi, Japan

[2] Tsurumi Univ, Sch Dent Med, Dept Oral & Maxillofacial Radiol & Diag, Yokohama, Kanagawa, Japan

[3] Asahi Univ, Sch Dent, Dept Oral Radiol, Mizuho, Japan

[4] Aichi Gakuin Univ, Sch Dent, Dept Oral & Maxillofacial Radiol, Nagoya, Aichi, Japan

来源：

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY | 2016年 / 122卷 / 05期

关键词：

VERTICAL ROOT FRACTURES; INTRAORAL RADIOGRAPHY; PERIAPICAL RADIOGRAPHY; SPATIAL-RESOLUTION; CT; ACCURACY;

D O I：

10.1016/j.oooo.2016.07.014

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objective. To determine the optimal scan settings (scan mode and position of field of view [FOV]) for cone beam computed tomography to reduce root fracture-like artifacts that are often observed in teeth filled with gutta-percha cones (GPCs). Study Design. Fracture-like artifacts that appeared on cone beam computed tomography images of 9 extracted human mandibular premolars filled with GPCs were analyzed using I-mode (FOV, 102 mm; voxel size, 0.2 mm) and D-mode (FOV, 51 mm; voxel size, 0.1 mm) settings. Results. The artificial lines were more obvious in I-mode than in D-mode. Increased distance between the center of the FOV and the GPCs produced stronger artificial lines in both I-mode and D-mode. Conclusion. To reduce fracture-like artifacts, it is critical to use a mode with small voxel size and to place the target tooth in the center of the FOV.

引用

页码：631 / 637

页数：7

共 25 条

[1] Development of a compact computed tomographic apparatus for dental use [J].