Effects of image artifacts on gray-value density in limited-volume cone-beam computerized tomography

被引：141

作者：

Katsumata, Akitoshi ^{[1
]}

Hirukawa, Akiko ^{[2
]}

Okumura, Shinji ^{[2
]}

Naitoh, Munetaka ^{[3
]}

Fujishita, Masami ^{[1
]}

Ariji, Eiichiro ^{[3
]}

Langlais, Robert P. ^{[4
]}

机构：

[1] Asahi Univ, Sch Dent, Dept Oral Radiol, Mizuho, Gifu Pref 5010296, Japan

[2] Aichi Gakuin Univ, Dent Hosp, Nagoya, Aichi, Japan

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

[4] Univ Texas, Hlth Sci Ctr, Sch Dent, Dept Dent Diagnost Sci, San Antonio, TX USA

来源：

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY | 2007年 / 104卷 / 06期

关键词：

D O I：

10.1016/j.tripleo.2006.12.005

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objective. An in vitro study was designed to investigate the influence of projection data discontinuity-related artifacts in limited-volume cone-beam computerized tomography (CBCT) imaging of the jaws. Study design. Test objects were positioned in 4 patterns in a water-filled phantom as follows: bimandible and vertebrae, bimandible, left mandible and vertebrae, and left mandible. The CT imaging of the left molar region was performed using image intensifier (II)- and flat panel detector (FPD)-based CBCT scanners. The CT value of the mandible and the adjacent soft tissue region were analyzed for density by means of an 8-bit grayscale. Results. The effects of artifacts were scored as the difference in relative density between the lingual and buccal soft tissue. The intensity of artifacts increased when more objects were presented outside the area being imaged. Fewer artifacts were noted in images produced by the particular FPD CBCT used in this investigation. Conclusion. The CBCT system using an FPD resulted in fewer artifacts than the CBCT system using an II in this particular study.

引用

页码：829 / 836

页数：8

共 20 条

[1] COMPUTERIZED TRANSVERSE AXIAL SCANNING (TOMOGRAPHY) .2. CLINICAL APPLICATION [J].

AMBROSE, J .

BRITISH JOURNAL OF RADIOLOGY, 1973, 46 (552) :1023-1047

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

Arai, Y ;

Tammisalo, E ;

Iwai, K ;

Hashimoto, K ;

Shinoda, K .

DENTOMAXILLOFACIAL RADIOLOGY, 1999, 28 (04) :245-248

[3] Characteristics of a newly developed dentomaxillofacial X-ray cone beam CT scanner (CB MercuRay™):: system configuration and physical properties [J].

Araki, K ;

Maki, K ;

Seki, K ;

Sakamaki, K ;

Harata, Y ;

Sakaino, R ;

Okano, T ;

Seo, K .

DENTOMAXILLOFACIAL RADIOLOGY, 2004, 33 (01) :51-59

[4]

Aranyarachkul P, 2005, INT J ORAL MAX IMPL, V20, P416

[5] Using a flat-panel detector in high resolution cone beam CT for dental imaging [J].

Baba, R ;

Ueda, K ;

Okabe, M .

DENTOMAXILLOFACIAL RADIOLOGY, 2004, 33 (05) :285-290

[6] A comparison of a new limited cone beam computed tomography machine for dental use with a multidetector row helical CT machine [J].

Hashimoto, K ;

Arai, Y ;

Iwai, K ;

Araki, M ;

Kawashima, S ;

Terakado, M .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY, 2003, 95 (03) :371-377

[7] Ortho cubic super-high resolution computed tomography: A new radiographic technique with application to the temporomandibular joint [J].

Honda, K ;

Larheim, TA ;

Johannessen, S ;

Arai, Y ;

Shinoda, K ;

Westesson, PL .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS, 2001, 91 (02) :239-243

[8] COMPUTERIZED TRANSVERSE AXIAL SCANNING (TOMOGRAPHY) .1. DESCRIPTION OF SYSTEM [J].

HOUNDFIELD, GN .

BRITISH JOURNAL OF RADIOLOGY, 1973, 46 (552) :1016-1022

[9] Image artifact in dental cone-beam CT [J].

Katsumata, A ;

Hirukawa, A ;

Noujeim, M ;

Okumura, S ;

Naitoh, M ;

Fujishita, M ;

Ariji, E ;

Langlais, RP .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY, 2006, 101 (05) :652-657

[10]

Kawamata A, 2000, Dent Clin North Am, V44, P395

← 1 2 →