Signal-to-noise ratios of 6 intraoral digital sensors

被引：19

作者：

Attaelmanan, AG ^{[1
]}

Borg, E ^{[1
]}

Gröndahl, HG ^{[1
]}

机构：

[1] Univ Gothenburg, Fac Odontol, Dept Oral & Maxillofacial Radiol, Gothenburg, Sweden

来源：

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS | 2001年 / 91卷 / 05期

关键词：

D O I：

10.1067/moe.2001.113590

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objective, The objective of this study was to compare the signal-to-noise ratios (SNRs) of 6 intraoral direct digital sensors. The sensors were Visualix 1,Visualix 2, DenOptix, Computed Dental Radiography (CDR), CDR APS, and Digora. Study design. The sensors were exposed by using a dental x-ray machine operating at 50 kV, 8 mA and various exposure times. The phantom used was a hole measuring 1 mm in diameter and 1.25 mm in depth, drilled in a IO-mm-thick aluminum block. Digital images were transferred as 8-bit tagged image file format files and analyzed by using a personal computer. Results and conclusions. SNR values increased up to a maximum value at a certain exposure level and then, depending on the system, either decreased or maintained a high level with increased exposure. The Digora system produced the highest SNR Values over a large exposure range, whereas the Visualix 2 and DenOptix systems produced the lowest SNR values. The 2 CDR sensors produced rather high SNRs but over a very small exposure range.

引用

页码：611 / 615

页数：5

共 18 条

[1]

ATTAELMANAN A, 1999, ORAL MAXILLOFACIAL R

[2] Assessments of the physical performance of 2 generations of 2 direct digital intraoral sensors [J].

Attaelmanan, AG ;

Borg, E ;

Gröndahl, HG .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY, 1999, 88 (04) :517-523

[3] On the dynamic range of different X-ray photon detectors in intra-oral radiography. A comparison of image quality in film, charge-coupled device and storage phosphor systems [J].

Borg, E ;

Grondahl, HG .

DENTOMAXILLOFACIAL RADIOLOGY, 1996, 25 (02) :82-88

[4] Image plate systems differ in physical performance [J].

Borg, E ;

Attaelmanan, A ;

Gröndahl, HG .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS, 2000, 89 (01) :118-124

[5] Subjective image quality of solid-state and photostimulable phosphor systems for digital intra-oral radiography [J].

Borg, E ;

Attaelmanan, A ;

Gröndahl, HG .

DENTOMAXILLOFACIAL RADIOLOGY, 2000, 29 (02) :70-75

[6]

Farman A G, 1995, Quintessence Int, V26, P399

[7] SENS-A-RAY CHARACTERISTICS WITH VARIATIONS IN-BEAM QUALITY [J].

HARADA, T ;

NISHIKAWA, K ;

SHIBUYA, H ;

HAYAKAWA, Y ;

KUROYANAGI, K .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS, 1995, 80 (01) :120-123

[8] Intraoral radiographic storage phosphor image mean pixel values and signal-to-noise ratio - Effects of calibration [J].

Hayakawa, Y ;

Farman, AG ;

Kelly, MS ;

Kuroyanagi, K .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS, 1998, 86 (05) :601-605

[9]

HAYAKAWA Y, 1995, ORAL RADIOL, V11, P31

[10] COMPUTED RADIOGRAPHY WITH PHOTOSTIMULABLE PHOSPHOR IN ORAL AND MAXILLOFACIAL RADIOLOGY [J].

KASHIMA, I .

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS, 1995, 80 (05) :577-598

← 1 2 →