دورية أكاديمية
The impact of automatic tube current modulation related settings of a modern GE CT scanner on image quality and patient dose; details do matter.
| العنوان: | The impact of automatic tube current modulation related settings of a modern GE CT scanner on image quality and patient dose; details do matter. |
|---|---|
| المؤلفون: | Tsalafoutas IA; Medical Physics Section, Occupational Health and Safety Department, Hamad Medical Corporation, Doha, Qatar., AlKhazzam S; Medical Physics Section, Occupational Health and Safety Department, Hamad Medical Corporation, Doha, Qatar., Kharita MH; Medical Physics Section, Occupational Health and Safety Department, Hamad Medical Corporation, Doha, Qatar. |
| المصدر: | Journal of applied clinical medical physics [J Appl Clin Med Phys] 2024 Jun; Vol. 25 (6), pp. e14356. Date of Electronic Publication: 2024 Apr 24. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley on behalf of American Association of Physicists in Medicine Country of Publication: United States NLM ID: 101089176 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1526-9914 (Electronic) Linking ISSN: 15269914 NLM ISO Abbreviation: J Appl Clin Med Phys Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2017- : Malden, MA : Wiley on behalf of American Association of Physicists in Medicine Original Publication: Reston, VA : American College of Medical Physics, c2000- |
| مواضيع طبية MeSH: | Phantoms, Imaging* , Radiation Dosage* , Tomography, X-Ray Computed*/methods , Tomography, X-Ray Computed*/instrumentation , Tomography Scanners, X-Ray Computed* , Image Processing, Computer-Assisted*/methods, Humans ; Radiographic Image Interpretation, Computer-Assisted/methods ; Signal-To-Noise Ratio |
| مستخلص: | Purpose: To investigate the operation principles of the automatic tube current modulation (ATCM) of a modern GE healthcare CT scanner, and the impact of related settings on image quality and patient dose. Material & Methods: A dedicated phantom (Mercury 4.0) was scanned using two of the most frequently used clinical scanning protocols (chest and abdomen-pelvis). The preset protocol settings were used as starting points (reference conditions). Scan direction, scan mode (helical vs. axial), total beam width, tube potential (kVp), and ATCM settings were then modified individually to understand their impact on radiation dose and image quality. Regarding the ATCM settings, the SmartmA minimum and maximum mA limits, and the noise index (NI) values were varied. As surrogates of patient dose, the CTDI Results: The scanning direction did not have any effect on ATCM curves, unlike what has been observed in CT scanners from other manufacturers. Total beam width does matter, however, the SmartmA limit settings and kVp selection had the greatest impact on image quality and dose. It was seen that improper minimum mA limit settings practically invalidated the ATCM operation. In contrast, when full modulation was allowed without restrictions, noise standard deviation, and detectability index became much more consistent across the wide range of phantom diameters. For lower kVp settings an impressive dose reduction was observed that requires further investigation. Conclusion: SmartmA is a tool that if not properly used may increase the patient doses considerably. Therefore, its settings should be carefully adjusted for each preset different clinical protocol. (© 2024 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.) |
| References: | Br J Radiol. 2011 Mar;84(999):236-43. (PMID: 21081566) Med Phys. 2012 Jul;39(7):4079-92. (PMID: 22830741) J Cardiovasc Comput Tomogr. 2009 May-Jun;3(3):190-204. (PMID: 19409872) Med Phys. 2012 Oct;39(10):6048-55. (PMID: 23039643) Med Phys. 2015 Aug;42(8):4941-53. (PMID: 26233220) PLoS One. 2020 Jul 16;15(7):e0236108. (PMID: 32673356) Med Phys. 2014 Jul;41(7):071909. (PMID: 24989387) Radiographics. 2008 Sep-Oct;28(5):1451-9. (PMID: 18794318) Med Phys. 2010 Jan;37(1):234-43. (PMID: 20175486) Radiographics. 2006 Mar-Apr;26(2):503-12. (PMID: 16549613) J Appl Clin Med Phys. 2024 Jun;25(6):e14356. (PMID: 38659159) Med Phys. 2016 Dec;43(12):6497. (PMID: 27908164) Radiology. 2016 Apr;279(1):167-74. (PMID: 26473641) Med Phys. 2020 Apr;47(4):1633-1639. (PMID: 32040862) Korean J Radiol. 2018 Nov-Dec;19(6):1119-1129. (PMID: 30386143) Radiographics. 2015 Nov-Dec;35(7):1922-39. (PMID: 26473536) Quant Imaging Med Surg. 2022 Feb;12(2):1348-1358. (PMID: 35111629) Jpn J Radiol. 2023 Jun;41(6):596-604. (PMID: 36607549) Eur Radiol. 2014 Jul;24(7):1643-50. (PMID: 24816937) Med Phys. 2013 Mar;40(3):031908. (PMID: 23464323) AJR Am J Roentgenol. 2021 Dec;217(6):1344-1352. (PMID: 34133193) J Appl Clin Med Phys. 2022 Jul;23(7):e13620. (PMID: 35678780) Radiology. 2004 Apr;231(1):169-74. (PMID: 15068946) Med Phys. 2014 Jul;41(7):071914. (PMID: 24989392) Med Phys. 2019 Nov;46(11):e735-e756. (PMID: 31408540) IEEE Trans Med Imaging. 1994;13(2):290-300. (PMID: 18218505) |
| فهرسة مساهمة: | Keywords: CT; automatic tube current modulation; detectability index; image noise; mercury phantom; quality control |
| تواريخ الأحداث: | Date Created: 20240425 Date Completed: 20240610 Latest Revision: 20240612 |
| رمز التحديث: | 20240612 |
| مُعرف محوري في PubMed: | PMC11163491 |
| DOI: | 10.1002/acm2.14356 |
| PMID: | 38659159 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1526-9914 |
|---|---|
| DOI: | 10.1002/acm2.14356 |