Performance of Adaptive Iterative Dose Reduction 3D Integrated With Automatic Tube Current Modulation in Radiation Dose and Image Noise Reduction Compared With Filtered-back Projection for 80-kVp Abdominal CT: Anthropomorphic Phantom and Patient Study
Abstract Objectives Evaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage and image quality for an 80-kVp abdominal CT. Materials and Methods An abdominal phantom underwent four CT acquisitions and recons...
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Published in | European journal of radiology Vol. 85; no. 9; pp. 1666 - 1672 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
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Elsevier Ireland Ltd
01.09.2016
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Abstract | Abstract Objectives Evaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage and image quality for an 80-kVp abdominal CT. Materials and Methods An abdominal phantom underwent four CT acquisitions and reconstruction algorithms (FBP; AIDR 3D mild, standard and strong). Sixty-three patients underwent unenhanced liver CT with FBP and standard level AIDR 3D. Further post-acquisition reconstruction with strong level AIDR 3D was made. Patients were divided into two groups (< and ≧29 cm) based on the abdominal effective diameter ( Deff ) at T12 level. Quantitative (attenuation, noise, and signal-to-noise ratio) and qualitative (image quality, noise, sharpness, and artifact) analysis by two readers were assessed and the interobserver agreement was calculated. Results Strong level AIDR 3D reduced radiation dose by 72% in the phantom and 47.1% in the patient study compared with FBP. There was no difference in mean attenuations. Image noise was the lowest and signal-to-noise ratio the highest using strong level AIDR 3D in both patient groups. For Deff < 29 cm, image sharpness of FBP was significantly different from those of AIDR 3D ( P < 0.05). For Deff ≧29 cm, image quality of AIDR 3D was significantly more favorable than FBP ( P < 0.05). Interobserver agreement was substantial. Conclusions Integrated AIDR 3D allows for an automatic reduction in radiation dose and maintenance of image quality compared with FBP. Using AIDR 3D reconstruction, patients with larger abdomen circumference could be imaged at 80 kVp. |
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AbstractList | Evaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage and image quality for an 80-kVp abdominal CT.
An abdominal phantom underwent four CT acquisitions and reconstruction algorithms (FBP; AIDR 3D mild, standard and strong). Sixty-three patients underwent unenhanced liver CT with FBP and standard level AIDR 3D. Further post-acquisition reconstruction with strong level AIDR 3D was made. Patients were divided into two groups (< and ≧29cm) based on the abdominal effective diameter (Deff) at T12 level. Quantitative (attenuation, noise, and signal-to-noise ratio) and qualitative (image quality, noise, sharpness, and artifact) analysis by two readers were assessed and the interobserver agreement was calculated.
Strong level AIDR 3D reduced radiation dose by 72% in the phantom and 47.1% in the patient study compared with FBP. There was no difference in mean attenuations. Image noise was the lowest and signal-to-noise ratio the highest using strong level AIDR 3D in both patient groups. For Deff<29cm, image sharpness of FBP was significantly different from those of AIDR 3D (P<0.05). For Deff ≧29cm, image quality of AIDR 3D was significantly more favorable than FBP (P<0.05). Interobserver agreement was substantial.
Integrated AIDR 3D allows for an automatic reduction in radiation dose and maintenance of image quality compared with FBP. Using AIDR 3D reconstruction, patients with larger abdomen circumference could be imaged at 80kVp. OBJECTIVESEvaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage and image quality for an 80-kVp abdominal CT.MATERIALS AND METHODSAn abdominal phantom underwent four CT acquisitions and reconstruction algorithms (FBP; AIDR 3D mild, standard and strong). Sixty-three patients underwent unenhanced liver CT with FBP and standard level AIDR 3D. Further post-acquisition reconstruction with strong level AIDR 3D was made. Patients were divided into two groups (< and ≧29cm) based on the abdominal effective diameter (Deff) at T12 level. Quantitative (attenuation, noise, and signal-to-noise ratio) and qualitative (image quality, noise, sharpness, and artifact) analysis by two readers were assessed and the interobserver agreement was calculated.RESULTSStrong level AIDR 3D reduced radiation dose by 72% in the phantom and 47.1% in the patient study compared with FBP. There was no difference in mean attenuations. Image noise was the lowest and signal-to-noise ratio the highest using strong level AIDR 3D in both patient groups. For Deff<29cm, image sharpness of FBP was significantly different from those of AIDR 3D (P<0.05). For Deff ≧29cm, image quality of AIDR 3D was significantly more favorable than FBP (P<0.05). Interobserver agreement was substantial.CONCLUSIONSIntegrated AIDR 3D allows for an automatic reduction in radiation dose and maintenance of image quality compared with FBP. Using AIDR 3D reconstruction, patients with larger abdomen circumference could be imaged at 80kVp. Abstract Objectives Evaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage and image quality for an 80-kVp abdominal CT. Materials and Methods An abdominal phantom underwent four CT acquisitions and reconstruction algorithms (FBP; AIDR 3D mild, standard and strong). Sixty-three patients underwent unenhanced liver CT with FBP and standard level AIDR 3D. Further post-acquisition reconstruction with strong level AIDR 3D was made. Patients were divided into two groups (< and ≧29 cm) based on the abdominal effective diameter ( Deff ) at T12 level. Quantitative (attenuation, noise, and signal-to-noise ratio) and qualitative (image quality, noise, sharpness, and artifact) analysis by two readers were assessed and the interobserver agreement was calculated. Results Strong level AIDR 3D reduced radiation dose by 72% in the phantom and 47.1% in the patient study compared with FBP. There was no difference in mean attenuations. Image noise was the lowest and signal-to-noise ratio the highest using strong level AIDR 3D in both patient groups. For Deff < 29 cm, image sharpness of FBP was significantly different from those of AIDR 3D ( P < 0.05). For Deff ≧29 cm, image quality of AIDR 3D was significantly more favorable than FBP ( P < 0.05). Interobserver agreement was substantial. Conclusions Integrated AIDR 3D allows for an automatic reduction in radiation dose and maintenance of image quality compared with FBP. Using AIDR 3D reconstruction, patients with larger abdomen circumference could be imaged at 80 kVp. |
Author | Lin, Yang-Yu, MD Hung, Chien-Fu, MD Liao, Ying-Lan, PhD Chen, Chien-Ming, MD Hsu, Ming-Yi, MD Tsai, Hui-Yu, PhD |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/27501904$$D View this record in MEDLINE/PubMed |
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CitedBy_id | crossref_primary_10_1016_j_ejrad_2020_108853 crossref_primary_10_1007_s10140_020_01864_4 crossref_primary_10_1007_s00261_018_1687_9 crossref_primary_10_1053_j_ro_2018_02_008 crossref_primary_10_1093_rpd_ncy153 crossref_primary_10_1088_1361_6560_ac0391 crossref_primary_10_1088_1742_6596_851_1_012005 crossref_primary_10_1097_MD_0000000000011857 |
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Keywords | ATCM adaptive iterative dose reduction 3D D eff SSDE DLP iterative reconstruction automatic tube current modulation FBP SNR Phantoms Imaging effective diameter size-specific dose estimate Radiographic Image Enhancement Multidetector Computed Tomography dose length product filtered-back projection IR Radiation Dosage ROI AIDR 3D CTDI vol region of interest signal-to-noise ratio CT volume dose index Observer Variation Deff CTDIvol Radiographic image enhancement Observer variation Radiation dosage Multidetector computed tomography |
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Snippet | Abstract Objectives Evaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding... Evaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage and image... OBJECTIVESEvaluate the performance of Adaptive Iterative Dose Reduction 3D (AIDR 3D) and compare with filtered-back projection (FBP) regarding radiation dosage... |
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SubjectTerms | Aged Algorithms Body Mass Index Female Humans Imaging Imaging, Three-Dimensional Male Middle Aged Multidetector computed tomography Observer variation Phantoms Phantoms, Imaging Prospective Studies Radiation Dosage Radiographic image enhancement Radiographic Image Interpretation, Computer-Assisted - methods Radiography, Abdominal - methods Radiology Radiometry Reproducibility of Results Signal-To-Noise Ratio Tomography, X-Ray Computed - methods |
Title | Performance of Adaptive Iterative Dose Reduction 3D Integrated With Automatic Tube Current Modulation in Radiation Dose and Image Noise Reduction Compared With Filtered-back Projection for 80-kVp Abdominal CT: Anthropomorphic Phantom and Patient Study |
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