Convolution-based estimation of organ dose in tube current modulated CT

2015 ◽  
Author(s):  
Xiaoyu Tian ◽  
W. P. Segars ◽  
R. L. Dixon ◽  
Ehsan Samei
Keyword(s):  
Organ Dose ◽  
Tube Current

scholarly journals Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study

2021 ◽  
Vol 11 (5) ◽  
pp. 2047
Author(s):  
Nor Azura Muhammad ◽  
Zunaide Kayun ◽  
Hasyma Abu Hassan ◽  
Jeannie Hsiu Ding Wong ◽  
Kwan Hoong Ng ◽  
...  
Keyword(s):  
Image Quality ◽  
Multidetector Ct ◽  
Organ Dose ◽  
Quality Metrics ◽  
Ct Scanner ◽  
Image Quality Metrics ◽  
Tube Current ◽  
Significant Difference ◽  
Noise Ratio ◽  
The Impact

The aim of this study is to investigate the impact of CT acquisition parameter setting on organ dose and its influence on image quality metrics in pediatric phantom during CT examination. The study was performed on 64-slice multidetector CT scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CT CAP protocols (P1–P9). Tube potential for P1, P2, and P3 protocols were fixed at 100 kVp while P4, P5, and P6 were fixed at 80 kVp with used of various reference noise values. P7, P8, and P9 were the modification of P1 with changes on slice collimation, pitch factor, and tube current modulation (TCM), respectively. TLD-100 chips were inserted into the phantom slab number 7, 9, 10, 12, 13, and 14 to represent thyroid, lung, liver, stomach, gonads, and skin, respectively. The image quality metrics, signal to noise ratio (SNR) and contrast to noise ratio (CNR) values were obtained from the CT console. As a result, this study indicates a potential reduction in the absorbed dose up to 20% to 50% along with reducing tube voltage, tube current, and increasing the slice collimation. There is no significant difference (p > 0.05) observed between the protocols and image metrics.

scholarly journals Convolution-based estimation of organ dose in tube current modulated CT

2016 ◽  
Vol 61 (10) ◽  
pp. 3935-3954 ◽  
Author(s):  
Xiaoyu Tian ◽  
W Paul Segars ◽  
Robert L Dixon ◽  
Ehsan Samei
Keyword(s):  
Organ Dose ◽  
Tube Current

scholarly journals Prospective estimation of organ dose in CT under tube current modulation

2015 ◽  
Vol 42 (4) ◽  
pp. 1575-1585 ◽  
Author(s):  
Xiaoyu Tian ◽  
Xiang Li ◽  
W. Paul Segars ◽  
Donald P. Frush ◽  
Ehsan Samei
Keyword(s):  
Organ Dose ◽  
Tube Current Modulation ◽  
Current Modulation ◽  
Tube Current

SU-E-I-25: Organ Dose Reduction by Lowering Tube Voltage from 120kVp to 80kVp for Fixed Tube Current Chest CT Scans

2011 ◽  
Vol 38 (6Part4) ◽  
pp. 3401-3401
Author(s):  
M Khatonabadi ◽  
D Zhang ◽  
A Turner ◽  
J DeMarco ◽  
D Cody ◽  
...  
Keyword(s):  
Dose Reduction ◽  
Organ Dose ◽  
Chest Ct ◽  
Ct Scans ◽  
Tube Voltage ◽  
Tube Current

scholarly journals Estimating organ dose in computed tomography using tube current modulation: A Monte Carlo simulation

2021 ◽  
Vol 19 (3) ◽  
pp. 575-581
Author(s):  
V. Hosseinzadeh ◽  
H. Ghaffari ◽  
A. Rezaeyan ◽  
S. Deilami ◽  
◽  
...  
Keyword(s):  
Computed Tomography ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Organ Dose ◽  
Tube Current Modulation ◽  
Current Modulation ◽  
Tube Current
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