Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems
The purpose of this study was to assess the image quality of the low dose 2D/3D slot scanner (LDSS) imaging system compared to conventional digital radiography (DR) imaging systems. Visual image quality was assessed using the visual grading analysis (VGA) method. This method is a subjective approach...
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MDPI AG
2021-10-01
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Series: | Diagnostics |
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Online Access: | https://www.mdpi.com/2075-4418/11/10/1932 |
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author | Ahmed Jibril Abdi Bo Mussmann Alistair Mackenzie Oke Gerke Gitte Maria Jørgensen Thor Eriksen Bechsgaard Janni Jensen Lone Brunshøj Olsen Poul Erik Andersen |
author_facet | Ahmed Jibril Abdi Bo Mussmann Alistair Mackenzie Oke Gerke Gitte Maria Jørgensen Thor Eriksen Bechsgaard Janni Jensen Lone Brunshøj Olsen Poul Erik Andersen |
author_sort | Ahmed Jibril Abdi |
collection | DOAJ |
description | The purpose of this study was to assess the image quality of the low dose 2D/3D slot scanner (LDSS) imaging system compared to conventional digital radiography (DR) imaging systems. Visual image quality was assessed using the visual grading analysis (VGA) method. This method is a subjective approach that uses a human observer to evaluate and optimise radiographic images for different imaging technologies. Methods and materials: ten posterior-anterior (PA) and ten lateral (LAT) images of a chest anthropomorphic phantoms and a knee phantom were acquired by an LDSS imaging system and two conventional DR imaging systems. The images were shown in random order to three (chest) radiologists and three experienced (knee) radiographers, who scored the images against a number of criteria. Inter- and intraobserver agreement was assessed using Fleiss’ kappa and weighted kappa. Results: the statistical comparison of the agreement between the observers showed good interobserver agreement, with Fleiss’ kappa coefficients of 0.27–0.63 and 0.23–0.45 for the chest and knee protocols, respectively. Comparison of intraobserver agreement also showed good agreement with weighted kappa coefficients of 0.27–0.63 and 0.23–0.45 for the chest and knee protocols, respectively. The LDSS imaging system achieved significantly higher VGA image quality compared to the DR imaging systems in the AP and LAT chest protocols (<i>p</i> < 0.001). However, the LDSS imaging system achieved lower image quality than one DR system (<i>p</i> ≤ 0.016) and equivalent image quality to the other DR systems (<i>p</i> ≤ 0.27) in the knee protocol. The LDSS imaging system achieved effective dose savings of 33–52% for the chest protocol and 30–35% for the knee protocol compared with DR systems. Conclusions: this work has shown that the LDSS imaging system has the potential to acquire chest and knee images at diagnostic quality and at a lower effective dose than DR systems. |
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issn | 2075-4418 |
language | English |
last_indexed | 2024-03-10T06:37:58Z |
publishDate | 2021-10-01 |
publisher | MDPI AG |
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series | Diagnostics |
spelling | doaj.art-ccc3b334b53345869439be3e999339c82023-11-22T17:59:01ZengMDPI AGDiagnostics2075-44182021-10-011110193210.3390/diagnostics11101932Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging SystemsAhmed Jibril Abdi0Bo Mussmann1Alistair Mackenzie2Oke Gerke3Gitte Maria Jørgensen4Thor Eriksen Bechsgaard5Janni Jensen6Lone Brunshøj Olsen7Poul Erik Andersen8Department of Clinical Research, University of Southern Denmark, 5000 Odense, DenmarkDepartment of Clinical Research, University of Southern Denmark, 5000 Odense, DenmarkNational Coordinating Centre for the Physics of Mammography, Royal Surrey NHS Foundation Trust, Guildford GU2 7XX, UKDepartment of Clinical Research, University of Southern Denmark, 5000 Odense, DenmarkDepartment of Radiology, Odense University Hospital, 5000 Odense, DenmarkDepartment of Radiology, Odense University Hospital, 5000 Odense, DenmarkDepartment of Clinical Research, University of Southern Denmark, 5000 Odense, DenmarkDepartment of Radiology, Odense University Hospital, 5000 Odense, DenmarkDepartment of Clinical Research, University of Southern Denmark, 5000 Odense, DenmarkThe purpose of this study was to assess the image quality of the low dose 2D/3D slot scanner (LDSS) imaging system compared to conventional digital radiography (DR) imaging systems. Visual image quality was assessed using the visual grading analysis (VGA) method. This method is a subjective approach that uses a human observer to evaluate and optimise radiographic images for different imaging technologies. Methods and materials: ten posterior-anterior (PA) and ten lateral (LAT) images of a chest anthropomorphic phantoms and a knee phantom were acquired by an LDSS imaging system and two conventional DR imaging systems. The images were shown in random order to three (chest) radiologists and three experienced (knee) radiographers, who scored the images against a number of criteria. Inter- and intraobserver agreement was assessed using Fleiss’ kappa and weighted kappa. Results: the statistical comparison of the agreement between the observers showed good interobserver agreement, with Fleiss’ kappa coefficients of 0.27–0.63 and 0.23–0.45 for the chest and knee protocols, respectively. Comparison of intraobserver agreement also showed good agreement with weighted kappa coefficients of 0.27–0.63 and 0.23–0.45 for the chest and knee protocols, respectively. The LDSS imaging system achieved significantly higher VGA image quality compared to the DR imaging systems in the AP and LAT chest protocols (<i>p</i> < 0.001). However, the LDSS imaging system achieved lower image quality than one DR system (<i>p</i> ≤ 0.016) and equivalent image quality to the other DR systems (<i>p</i> ≤ 0.27) in the knee protocol. The LDSS imaging system achieved effective dose savings of 33–52% for the chest protocol and 30–35% for the knee protocol compared with DR systems. Conclusions: this work has shown that the LDSS imaging system has the potential to acquire chest and knee images at diagnostic quality and at a lower effective dose than DR systems.https://www.mdpi.com/2075-4418/11/10/1932visual grading analysisslot scanner imaging systemDR imaging systemsimage quality assessmentchest examinationknee examination |
spellingShingle | Ahmed Jibril Abdi Bo Mussmann Alistair Mackenzie Oke Gerke Gitte Maria Jørgensen Thor Eriksen Bechsgaard Janni Jensen Lone Brunshøj Olsen Poul Erik Andersen Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems Diagnostics visual grading analysis slot scanner imaging system DR imaging systems image quality assessment chest examination knee examination |
title | Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems |
title_full | Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems |
title_fullStr | Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems |
title_full_unstemmed | Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems |
title_short | Visual Evaluation of Image Quality of a Low Dose 2D/3D Slot Scanner Imaging System Compared to Two Conventional Digital Radiography X-ray Imaging Systems |
title_sort | visual evaluation of image quality of a low dose 2d 3d slot scanner imaging system compared to two conventional digital radiography x ray imaging systems |
topic | visual grading analysis slot scanner imaging system DR imaging systems image quality assessment chest examination knee examination |
url | https://www.mdpi.com/2075-4418/11/10/1932 |
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