使用 PBU-60 全身模型，通过改变 128 DSCT（Somatom Definition Flash，西门子医疗）上的 kVp、mAs 和间距，评估胸部 CT 的图像质量和辐射剂量日本京都学院有限公司

IF 1.3 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Journal of Medical Imaging and Radiation Sciences Pub Date : 2024-10-01 DOI:10.1016/j.jmir.2024.101520

Mr. Ravindra Kumar, Prof. Mandeep Garg, Mr. Ajay Kumar, Prof. Manavjit Singh Sandhu

{"title":"使用 PBU-60 全身模型，通过改变 128 DSCT（Somatom Definition Flash，西门子医疗）上的 kVp、mAs 和间距，评估胸部 CT 的图像质量和辐射剂量日本京都学院有限公司","authors":"Mr. Ravindra Kumar, Prof. Mandeep Garg, Mr. Ajay Kumar, Prof. Manavjit Singh Sandhu","doi":"10.1016/j.jmir.2024.101520","DOIUrl":null,"url":null,"abstract":"<div><h3>Introduction</h3><div>Image quality is initially associated with increased patient radiation dose. Several methods were continuously evolved to mitigate effects. Dose reduction strategies used by radiologists and technologists in the daily performance of CT examinations include modifying scanning protocols and manipulating scanning parameters such as mAs, kVp, and pitch.</div></div><div><h3>Aim</h3><div>The present study aims to study parameters that may be used to achieve maximum image quality with a reasonable radiation dose.</div></div><div><h3>Material and Method</h3><div>The Study was Done on a Whole-Body Phantom PBU 60 from Kagaku Kyoto Ltd. on 128 SLICE DSCT SOMATOM Definition Flash (Siemens Health Care) in Nehru Hospital, PGIMER, Chandigarh and Imaging, PGIMER, Chandigarh. The scans were obtained from the apex of the lung to the lower section of the posterior costophrenic angle by varying mAs (100mAs, 150mAs, 200mAs, 250mAs, and 300 mAs), kVp (70kVp, 80kVp, 100kVp, 120kVp and 140kVp) and pitch (0.5, 0.8, and 1.0).</div></div><div><h3>Results</h3><div>A total of 75 scans were acquired at acquisition 128 × 0.6mm by varying kVp, mAs and pitch and reconstructed to 10 mm and 1 mm for Multi Planner Reconstruction by using SAFIRE Excel by using medium Smooth Kernel (I30f Medium Smooth) for evaluating the Noise, Standard deviation, SNR and CNR. The radiation dose protocols were recorded for all examinations, including volume CT Dose Index (CTDIvol.) and Dose Length Product (DLP), provided automatically by scanner.</div></div><div><h3>Conclusion</h3><div>The phantom study shows that CTDIvol and DLP directly and significantly relate to mAs and kVp. CTDIvol and DLP vary pitch to 0.5, 0.8, and 1.0. SNR and CNR have no significant change ((p-value >0.05)) by varying Pitch 0.5, 0.8 and 1.0. Dose reduction and Image quality play an important role in Computed Tomography. It is essential to maintain accuracy and reproducibility of Diagnosis and patient care delivery.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Assessment Of Image Quality & Radiation Dose in Chest CT by Varying kVp, mAs & Pitch on 128 DSCT (Somatom Definition Flash, Siemens Healthcare) by Using PBU-60 Whole Body Phantom Kyoto Kagaku Ltd., Japan\",\"authors\":\"Mr. Ravindra Kumar, Prof. Mandeep Garg, Mr. Ajay Kumar, Prof. Manavjit Singh Sandhu\",\"doi\":\"10.1016/j.jmir.2024.101520\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Introduction</h3><div>Image quality is initially associated with increased patient radiation dose. Several methods were continuously evolved to mitigate effects. Dose reduction strategies used by radiologists and technologists in the daily performance of CT examinations include modifying scanning protocols and manipulating scanning parameters such as mAs, kVp, and pitch.</div></div><div><h3>Aim</h3><div>The present study aims to study parameters that may be used to achieve maximum image quality with a reasonable radiation dose.</div></div><div><h3>Material and Method</h3><div>The Study was Done on a Whole-Body Phantom PBU 60 from Kagaku Kyoto Ltd. on 128 SLICE DSCT SOMATOM Definition Flash (Siemens Health Care) in Nehru Hospital, PGIMER, Chandigarh and Imaging, PGIMER, Chandigarh. The scans were obtained from the apex of the lung to the lower section of the posterior costophrenic angle by varying mAs (100mAs, 150mAs, 200mAs, 250mAs, and 300 mAs), kVp (70kVp, 80kVp, 100kVp, 120kVp and 140kVp) and pitch (0.5, 0.8, and 1.0).</div></div><div><h3>Results</h3><div>A total of 75 scans were acquired at acquisition 128 × 0.6mm by varying kVp, mAs and pitch and reconstructed to 10 mm and 1 mm for Multi Planner Reconstruction by using SAFIRE Excel by using medium Smooth Kernel (I30f Medium Smooth) for evaluating the Noise, Standard deviation, SNR and CNR. The radiation dose protocols were recorded for all examinations, including volume CT Dose Index (CTDIvol.) and Dose Length Product (DLP), provided automatically by scanner.</div></div><div><h3>Conclusion</h3><div>The phantom study shows that CTDIvol and DLP directly and significantly relate to mAs and kVp. CTDIvol and DLP vary pitch to 0.5, 0.8, and 1.0. SNR and CNR have no significant change ((p-value >0.05)) by varying Pitch 0.5, 0.8 and 1.0. Dose reduction and Image quality play an important role in Computed Tomography. It is essential to maintain accuracy and reproducibility of Diagnosis and patient care delivery.</div></div>\",\"PeriodicalId\":46420,\"journal\":{\"name\":\"Journal of Medical Imaging and Radiation Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Medical Imaging and Radiation Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1939865424002510\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Medical Imaging and Radiation Sciences","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1939865424002510","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}

引用次数: 0

摘要

导言图像质量最初与患者辐射剂量的增加有关。为了减轻影响，人们不断发展出一些方法。放射科医生和技术人员在日常 CT 检查中使用的减少剂量策略包括修改扫描方案和调整扫描参数，如 mAs、kVp 和间距。材料和方法本研究在昌迪加尔 PGIMER 的尼赫鲁医院和昌迪加尔 PGIMER 的影像科使用 Kagaku Kyoto Ltd. 生产的 128 SLICE DSCT SOMATOM Definition Flash（西门子医疗保健公司）的全身模型 PBU 60 进行。通过改变 mAs（100mAs、150mAs、200mAs、250mAs 和 300mAs）、kVp（70kVp、80kVp、100kVp、120kVp 和 140kVp）和间距（0.5、0.8 和 1.0），获得从肺顶到后肋间角下部的扫描。结果通过改变 kVp、mAs 和间距，在采集 128 × 0.6 毫米时共采集了 75 个扫描，并使用 SAFIRE Excel，使用中等平滑核（I30f Medium Smooth）将扫描重建为 10 毫米和 1 毫米的多平面重建，以评估噪声、标准偏差、信噪比和 CNR。所有检查都记录了辐射剂量方案，包括扫描仪自动提供的容积 CT 剂量指数（CTDIvol）和剂量长度乘积（DLP）。CTDIvol 和 DLP 的间距分别为 0.5、0.8 和 1.0。信噪比（SNR）和有线电视清晰度（CNR）在间距为 0.5、0.8 和 1.0 时没有明显变化（p 值为 0.05）。减少剂量和图像质量在计算机断层扫描中起着重要作用。这对保持诊断和病人护理的准确性和可重复性至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Assessment Of Image Quality & Radiation Dose in Chest CT by Varying kVp, mAs & Pitch on 128 DSCT (Somatom Definition Flash, Siemens Healthcare) by Using PBU-60 Whole Body Phantom Kyoto Kagaku Ltd., Japan

Introduction

Image quality is initially associated with increased patient radiation dose. Several methods were continuously evolved to mitigate effects. Dose reduction strategies used by radiologists and technologists in the daily performance of CT examinations include modifying scanning protocols and manipulating scanning parameters such as mAs, kVp, and pitch.

Aim

The present study aims to study parameters that may be used to achieve maximum image quality with a reasonable radiation dose.

Material and Method

The Study was Done on a Whole-Body Phantom PBU 60 from Kagaku Kyoto Ltd. on 128 SLICE DSCT SOMATOM Definition Flash (Siemens Health Care) in Nehru Hospital, PGIMER, Chandigarh and Imaging, PGIMER, Chandigarh. The scans were obtained from the apex of the lung to the lower section of the posterior costophrenic angle by varying mAs (100mAs, 150mAs, 200mAs, 250mAs, and 300 mAs), kVp (70kVp, 80kVp, 100kVp, 120kVp and 140kVp) and pitch (0.5, 0.8, and 1.0).

Results

A total of 75 scans were acquired at acquisition 128 × 0.6mm by varying kVp, mAs and pitch and reconstructed to 10 mm and 1 mm for Multi Planner Reconstruction by using SAFIRE Excel by using medium Smooth Kernel (I30f Medium Smooth) for evaluating the Noise, Standard deviation, SNR and CNR. The radiation dose protocols were recorded for all examinations, including volume CT Dose Index (CTDIvol.) and Dose Length Product (DLP), provided automatically by scanner.

Conclusion

The phantom study shows that CTDIvol and DLP directly and significantly relate to mAs and kVp. CTDIvol and DLP vary pitch to 0.5, 0.8, and 1.0. SNR and CNR have no significant change ((p-value >0.05)) by varying Pitch 0.5, 0.8 and 1.0. Dose reduction and Image quality play an important role in Computed Tomography. It is essential to maintain accuracy and reproducibility of Diagnosis and patient care delivery.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Medical Imaging and Radiation Sciences RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

2.30

自引率

11.10%

发文量

231

审稿时长

53 days

期刊介绍： Journal of Medical Imaging and Radiation Sciences is the official peer-reviewed journal of the Canadian Association of Medical Radiation Technologists. This journal is published four times a year and is circulated to approximately 11,000 medical radiation technologists, libraries and radiology departments throughout Canada, the United States and overseas. The Journal publishes articles on recent research, new technology and techniques, professional practices, technologists viewpoints as well as relevant book reviews.

使用 PBU-60 全身模型，通过改变 128 DSCT（Somatom Definition Flash，西门子医疗）上的 kVp、mAs 和间距，评估胸部 CT 的图像质量和辐射剂量 日本京都学院有限公司

摘要

Introduction

Aim

Material and Method

Results

Conclusion

使用 PBU-60 全身模型，通过改变 128 DSCT（Somatom Definition Flash，西门子医疗）上的 kVp、mAs 和间距，评估胸部 CT 的图像质量和辐射剂量日本京都学院有限公司