Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study
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 Health...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-02-01
|
Series: | Applied Sciences |
Subjects: | |
Online Access: | https://www.mdpi.com/2076-3417/11/5/2047 |
id |
doaj-e6bb94574a794451b3cc7bab58a37ca1 |
---|---|
record_format |
Article |
spelling |
doaj-e6bb94574a794451b3cc7bab58a37ca12021-02-26T00:05:35ZengMDPI AGApplied Sciences2076-34172021-02-01112047204710.3390/app11052047Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom StudyNor Azura Muhammad0Zunaide Kayun1Hasyma Abu Hassan2Jeannie Hsiu Ding Wong3Kwan Hoong Ng4Muhammad Khalis Abdul Karim5Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, MalaysiaDepartment of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, MalaysiaDepartment of Radiology, Faculty of Medicine, University Putra Malaysia, Serdang 43400, MalaysiaDepartment of Biomedical Imaging, University Malaya Medical Centre, Petaling Jaya, Kuala Lumpur 59100, MalaysiaDepartment of Biomedical Imaging, University Malaya Medical Centre, Petaling Jaya, Kuala Lumpur 59100, MalaysiaDepartment of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, MalaysiaThe 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 (<i>p</i> > 0.05) observed between the protocols and image metrics.https://www.mdpi.com/2076-3417/11/5/2047computed tomographyabsorbed dosesignal–noise ratiocontrast–noise ratiofigure of merit |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nor Azura Muhammad Zunaide Kayun Hasyma Abu Hassan Jeannie Hsiu Ding Wong Kwan Hoong Ng Muhammad Khalis Abdul Karim |
spellingShingle |
Nor Azura Muhammad Zunaide Kayun Hasyma Abu Hassan Jeannie Hsiu Ding Wong Kwan Hoong Ng Muhammad Khalis Abdul Karim Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study Applied Sciences computed tomography absorbed dose signal–noise ratio contrast–noise ratio figure of merit |
author_facet |
Nor Azura Muhammad Zunaide Kayun Hasyma Abu Hassan Jeannie Hsiu Ding Wong Kwan Hoong Ng Muhammad Khalis Abdul Karim |
author_sort |
Nor Azura Muhammad |
title |
Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study |
title_short |
Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study |
title_full |
Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study |
title_fullStr |
Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study |
title_full_unstemmed |
Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study |
title_sort |
evaluation of organ dose and image quality metrics of pediatric ct chest-abdomen-pelvis (cap) examination: an anthropomorphic phantom study |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2021-02-01 |
description |
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 (<i>p</i> > 0.05) observed between the protocols and image metrics. |
topic |
computed tomography absorbed dose signal–noise ratio contrast–noise ratio figure of merit |
url |
https://www.mdpi.com/2076-3417/11/5/2047 |
work_keys_str_mv |
AT norazuramuhammad evaluationoforgandoseandimagequalitymetricsofpediatricctchestabdomenpelviscapexaminationananthropomorphicphantomstudy AT zunaidekayun evaluationoforgandoseandimagequalitymetricsofpediatricctchestabdomenpelviscapexaminationananthropomorphicphantomstudy AT hasymaabuhassan evaluationoforgandoseandimagequalitymetricsofpediatricctchestabdomenpelviscapexaminationananthropomorphicphantomstudy AT jeanniehsiudingwong evaluationoforgandoseandimagequalitymetricsofpediatricctchestabdomenpelviscapexaminationananthropomorphicphantomstudy AT kwanhoongng evaluationoforgandoseandimagequalitymetricsofpediatricctchestabdomenpelviscapexaminationananthropomorphicphantomstudy AT muhammadkhalisabdulkarim evaluationoforgandoseandimagequalitymetricsofpediatricctchestabdomenpelviscapexaminationananthropomorphicphantomstudy |
_version_ |
1724250297654575104 |