DOI: 10.5061/dryad.5j4kh
title: Data from: Quantitative comparison of commercial and non-commercial metal artifact reduction techniques in computed tomography

description: Objectives: Typical streak artifacts known as metal artifacts occur in the
 presence of strongly attenuating materials in computed tomography (CT).
 Recently, vendors have started offering metal artifact reduction (MAR)
 techniques. In addition, a MAR technique called the metal deletion
 technique (MDT) is freely available and able to reduce metal artifacts
 using reconstructed images. Although a comparison of the MDT to other MAR
 techniques exists, a comparison of commercially available MAR techniques
 is lacking. The aim of this study was therefore to quantify the difference
 in effectiveness of the currently available MAR techniques of different
 scanners and the MDT technique. Materials and Methods: Three vendors were
 asked to use their preferential CT scanner for applying their MAR
 techniques. The scans were performed on a Philips Brilliance ICT 256 (S1),
 a GE Discovery CT 750 HD (S2) and a Siemens Somatom Definition AS Open
 (S3). The scans were made using an anthropomorphic head and neck phantom
 (Kyoto Kagaku, Japan). Three amalgam dental implants were constructed and
 inserted between the phantom’s teeth. The average absolute error (AAE) was
 calculated for all reconstructions in the proximity of the amalgam
 implants. Results: The commercial techniques reduced the AAE by 22.0±1.6%,
 16.2±2.6% and 3.3±0.7% for S1 to S3 respectively. After applying the MDT
 to uncorrected scans of each scanner the AAE was reduced by 26.1±2.3%,
 27.9±1.0% and 28.8±0.5% respectively. The difference in efficiency between
 the commercial techniques and the MDT was statistically significant for S2
 (p=0.004) and S3 (p&lt;0.001), but not for S1 (p=0.63). Conclusions:
 The effectiveness of MAR differs between vendors. S1 performed slightly
 better than S2 and both performed better than S3. Furthermore, for our
 phantom and outcome measure the MDT was more effective than the commercial
 MAR technique on all scanners.
description: S1_MA_1_MDTA CT scan made by scanner 1 containing metal implants and reconstructed using the MDT.S1_MA_1A CT scan made by scanner 1 containing metal implants and reconstructed using the standard algorithm.S1_MA_3_OMARA CT scan made by scanner 1 containing metal implants and reconstructed using OMAR.S1_MA_1_OMARA CT scan made by scanner 1 containing metal implants and reconstructed using OMAR.S1_MA_2_OMARA CT scan made by scanner 1 containing metal implants and reconstructed using OMAR.S1_MA_3_MDTA CT scan made by scanner 1 containing metal implants and reconstructed using the MDT.S1_MA_3A CT scan made by scanner 1 containing metal implants and reconstructed using the standard algorithm.S1_MiscMiscellaneous data from scanner 1 (e.g. topogram, dose report)S1_Ref_1A CT scan made by scanner 1 containing no metal implants.S1_Ref_2A CT scan made by scanner 1 containing no metal implants.S1_Ref_3A CT scan made by scanner 1 containing no metal implants.S2_MA_1_MDTA CT scan made by scanner 2 containing metal implants and reconstructed using the MDT.S2_MA_1_sMARA CT scan made by scanner 2 containing metal implants and reconstructed using sMAR.S2_MA_1A CT scan made by scanner 2 containing metal implants and reconstructed using the standard algorithm.S2_MA_2_MDTA CT scan made by scanner 2 containing metal implants and reconstructed using the MDT.S2_MA_2_sMARA CT scan made by scanner 2 containing metal implants and reconstructed using sMAR.S2_MA_2A CT scan made by scanner 2 containing metal implants and reconstructed using the standard algorithm.S2_MA_3_MDTA CT scan made by scanner 2 containing metal implants and reconstructed using the MDT.S2_MA_3_sMARA CT scan made by scanner 2 containing metal implants and reconstructed using sMAR.S2_MA_3A CT scan made by scanner 2 containing metal implants and reconstructed using the standard algorithm.S2_Ref_3A CT scan made by scanner 2 containing no metal implants.S2_MiscMiscellaneous data from scanner 2 (e.g. topogram, dose report)S2_Ref_1A CT scan made by scanner 2 containing no metal implants.S2_Ref_2A CT scan made by scanner 2 containing no metal implants.S3_MA_1_DE120keVA CT scan made by scanner 3 containing metal implants using a dual energy acquisition and reconstructed at 120 keV.S3_MA_1_DE150keVA CT scan made by scanner 3 containing metal implants using a dual energy acquisition and reconstructed at 150 keV.S3_MA_1_MARIS0A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS0.S3_MA_1_MARIS1A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS1.S3_MA_1_MARIS2A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS2.S3_MA_1_MARIS3A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS3.S3_MA_1_MARIS4A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS4.S3_MA_1_MDTA CT scan made by scanner 3 containing metal implants and reconstructed using the MDT.S3_MA_1A CT scan made by scanner 3 containing metal implants and reconstructed using the standard algorithm.S3_MA_2_DE120keVA CT scan made by scanner 3 containing metal implants using a dual energy acquisition and reconstructed at 120 keV.S3_MA_2_DE150keVA CT scan made by scanner 3 containing metal implants using a dual energy acquisition and reconstructed at 150 keV.S3_MA_2_MARIS0A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS0.S3_MA_2_MARIS1A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS1.S3_MA_2_MARIS2A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS2.S3_MA_2_MARIS3A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS3.S3_MA_2_MARIS4A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS4.S3_MA_2_MDTA CT scan made by scanner 3 containing metal implants and reconstructed using the MDT.S3_MA_2A CT scan made by scanner 3 containing metal implants and reconstructed using the standard algorithm.S3_MA_3_MARIS2A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS2.S3_MA_3_MARIS1A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS1.S3_MA_3_DE120keVA CT scan made by scanner 3 containing metal implants using a dual energy acquisition and reconstructed at 120 keV.S3_MA_3_MARIS0A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS0.S3_MA_3_MARIS3A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS3.S3_MA_3_MARIS4A CT scan made by scanner 3 containing metal implants and reconstructed using MARIS4.S3_MA_3A CT scan made by scanner 3 containing metal implants and reconstructed using the standard algorithm.S3_MA_3_MDTA CT scan made by scanner 3 containing metal implants and reconstructed using the MDT.S3_MiscMiscellaneous data from scanner 1 (e.g. topogram, dose report)S3_Ref_1A CT scan made by scanner 3 containing no metal implants.S3_Ref_2A CT scan made by scanner 3 containing no metal implants.S3_Ref_3A CT scan made by scanner 3 containing no metal implants.