Comparison of spatial and contrast resolution for cone-beam computed tomography scanners

被引：92

作者：

Pauwels, Ruben ^{[1
]}

Beinsberger, Jilke ^{[1
]}

Stamatakis, Harry ^{[2
]}

Tsiklakis, Kostas ^{[2
]}

Walker, Adrian ^{[3
]}

Bosmans, Hilde ^{[4
]}

Bogaerts, Ria ^{[5
]}

Jacobs, Reinhilde ^{[1
]}

Horner, Keith ^{[6
]}

机构：

[1] Univ Louvain, Fac Med, Oral Imaging Ctr, Louvain, Belgium

[2] Univ Athens, Sch Dent, Dept Oral Diag & Oral Radiol, Athens, Greece

[3] Leeds Test Objects, Boroughbridge, England

[4] Univ Hosp Leuven, Dept Radiol, Louvain, Belgium

[5] Univ Hosp Leuven, Dept Expt Radiotherapy, Louvain, Belgium

[6] Univ Manchester, Sch Dent, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England

来源：

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY | 2012年 / 114卷 / 01期

关键词：

SUBJECTIVE IMAGE QUALITY; DENTAL USE; CT; RADIOLOGY;

D O I：

10.1016/j.oooo.2012.01.020

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objective. The purpose was to evaluate the perceived spatial and contrast resolution for a wide range of cone-beam computed tomography (CBCT) devices. Study Design. A customized polymethyl methacrylate (PMMA) phantom was developed. Inserts containing a line-pair and rod pattern were used. The phantom was scanned with 13 CBCT devices and 1 multislice CT (MSCT) device using a variety of scanning protocols. The images were presented to 4 observers for scoring. Results. The observer scores showed excellent agreement. A wide range was seen in image quality between CBCT exposure protocols. Compared with the average CBCT scores, the MSCT protocols scored lower for the line-pair insert but higher for the rod insert. Conclusions. CBCT devices are generally suitable for the visualization of high-contrast structures. Certain exposure protocols can be used for depicting low-contrast structures or fine details. The user should be able to select appropriate exposure protocols according to varying diagnostic requirements. (Oral Surg Oral Med Oral Pathol Oral Radiol 2012;114:127-135)

引用

页码：127 / 135

页数：9

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