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:: Volume 22, Issue 2 (4-2024) ::
Int J Radiat Res 2024, 22(2): 257-264 Back to browse issues page
Evaluation of patients' Body Mass Index and weight as a simpler alternative method for calculating size-specific dose estimation in patients with lung computed tomography
I.  Azinkhah , M. Sadeghi
Fintech in Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran , sadeghi.m@iums.ac.ir
Abstract:   (478 Views)
Background: Evaluation of Size-Specific Dose Estimation (SSDE) by patient's weight and Body Mass Index (BMI) instead of Anterior-Posterior (AP) and Lateral (LAT) diameter measurements in patient's images for lung computed tomography (CT). Materials and Methods: Before the examination, the weight and BMI of all patients were measured and calculated. All AP and LAT diameters were measured from the axial images, and localizer and conversion factors (fsize) were calculated based on them. Volume Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP) values were also recorded from the patient's examination summary. In this way, different SSDEs based on effective diameter (SSDEeff), water equivalent diameter(SSDEw), AP diameter (SSDEAP), LAT diameter (SSDELAT), sum of the AP and LAT diameters (SSDEAP+LAT), AP diameter in scout view (SSDEAPscout) and LAT diameter in scout view (SSDELATscout) are obtained. By Pearson statistical test the correlation between patients' BMI and weight with all types of SSDE calculation methods was examined. Results: There was a statistically significant correlation between all measured and compared parameters, but the most correlation between BMI and weight with SSDEs was obtained with SSDEeff (R=0.825, P<0.05) and SSDEw (R=0.777, P<0.05), respectively. Also, the correlation between BMI and effective diameter (deff) (R=0913, P<0.05) is the highest among all types of diameters measured. The correlation of BMI with SSDEw and water equivalent diameter (dw) was (R=0.807, P<0.05), (R=0.909, P<0.05), respectively. Conclusion: There seems to be a significant correlation between BMI andf_size so that we can estimate patients' SSDE without measuring AP and LAT diameters, even before a CT scan.
Keywords: size-specific dose estimate, CT scan, patient's BMI, body diameter.
Full-Text [PDF 1057 kb]   (92 Downloads)    
Type of Study: Original Research | Subject: Radiation Biology
References
1. 1. Mettler FA, Mahesh M, Bhargavan-Chatfield M, et al. (2020) Patient exposure from radiologic and nuclear medicine procedures in the United States: Procedure volume and effective dose for the period 2006-2016. Radiology, 295(2): 418-27. [DOI:10.1148/radiol.2020192256]
2. Ivanov VK, Kashcheev VV, Chekin SY, et al. (2014) Estimating the lifetime risk of cancer associated with multiple CT scans. J Radiol Prot, 34(4): 825-41. [DOI:10.1088/0952-4746/34/4/825]
3. Shimada K and Kai M (2015) Calculating disability-adjusted life years (DALY) as a measure of excess cancer risk following radiation exposure. J Radiol Prot, 35(4): 763-75. [DOI:10.1088/0952-4746/35/4/763]
4. Shope TB, Gagne RM, Johnson GC (1981) A method for describing the doses delivered by transmission, ray computed tomography. Med Phys, 8(4): 488-95. [DOI:10.1118/1.594995]
5. Strauss KJ (2014) Dose indices: everybody wants a number. Vol. 44, Pediatric Radiology. Springer Verlag; 2014. p. 450-9. [DOI:10.1007/s00247-014-3104-z]
6. IEC 62271-200:2021 | IEC Webstore [Internet]. [cited 2022 Feb 15]. Available from: https://webstore.iec.ch/publication/59789
7. McCollough CH, Leng S, Yu L, et al. (2011) CT Dose Index and Patient Dose: They Are Not the Same Thing. Radiology, 259(2): 311-6. [DOI:10.1148/radiol.11101800]
8. AAPM (2011) Size-specific dose estimates in pediatric and adult body CT examinations. AAPM Rep 204, 204: 1-30.
9. Waszczuk ŁA, Guziński M, Czarnecka A, Sąsiadek MJ (2015) Size-specific dose estimates for evaluation of individual patient dose in CT protocol for renal colic. Am J Roentgenol, 205(1): 100-5. [DOI:10.2214/AJR.14.13573]
10. Khawaja RDA, Singh S, Vettiyil B, et al. (2015) Simplifying Size-Specific Radiation Dose Estimates in Pediatric CT. Am J Roentgenol, 204(1): 167-76. [DOI:10.2214/AJR.13.12191]
11. AAPM TG 220 (2014): Use of water equivalent diameter for calculating patient size and size-specific dose estimates (SSDE) in CT. AAPM Rep 220, 220: 1-23.
12. Bostani M, McMillan K, Lu P, et al. (2015) Attenuation-based size metric for estimating organ dose to patients undergoing tube current modulated CT exams. Med Phys, 42(2): 958-68. [DOI:10.1118/1.4906132]
13. Ikuta I, Warden GI, Andriole KP, et al. (2014) Estimating patient dose from x-ray tube output metrics: Automated measurement of patient size from CT images enables largescale size-specific dose estimates. Radiology, 270(2): 472-80. [DOI:10.1148/radiol.13122727]
14. WHO: The SuRF report 2 (2005) Surveillance of chronic disease risk factors : country level data and comparable estimates. Genf World-Health-Organisation, Available from: http://infobase.who.int.
15. Pourjabbar S (2014) Size-specific dose estimates: Localizer or transverse abdominal computed tomography images? World J Radiol, 6(5): 210. [DOI:10.4329/wjr.v6.i5.210]
16. Boos J, Kröpil P, Bethge OT, et al. (2018) Accuracy of size-specific dose estimate calculation from center slice in computed tomography. Radiat Prot Dosimetry, 178(1): 8-19. [DOI:10.1093/rpd/ncx069]
17. Wang J, Duan X, Christner JA, et al. (2012) Attenuation-based estimation of patient size for the purpose of size specific dose estimation in CT (2012) Part I. Development and validation of methods using the CT image. Med Phys, 39(11): 6764-71. [DOI:10.1118/1.4754303]
18. Wang J, Christner JA, Duan X, et al. (2012) Attenuation-based estimation of patient size for the purpose of size specific dose estimation in CT. Part II. Implementation on abdomen and thorax phantoms using cross sectional CT images and scanned projection radiograph images. Med Phys, 39(11): 6772-8. [DOI:10.1118/1.4757586]
19. Leng S, Shiung M, Duan X, et al. (2015) Size-specific dose estimates for chest, abdominal, and pelvic CT: Effect of intrapatient variability in water-equivalent diameter. Radiology, 276(1): 184-90. [DOI:10.1148/radiol.15142160]
20. Schneider CA, Rasband WS, Eliceiri KW (2012) NIH Image to ImageJ: 25 years of image analysis. Nat Methods, 9(7): 671-5. [DOI:10.1038/nmeth.2089]
21. Boos J, Thomas C, Appel E, et al. (2018) Institutional computed tomography diagnostic reference levels based on water-equivalent diameter and size-specific dose estimates. J Radiol Prot, 38(2): 536-48. [DOI:10.1088/1361-6498/aaa32c]
22. Marsh RM and Silosky MS (2017) The effects of patient positioning when interpreting CT dose metrics: A phantom study. Med Phys, 44(4): 1514-24. [DOI:10.1002/mp.12137]
23. Kaasalainen T, Palmu K, Reijonen V, Kortesniemi M (2014) Effect of patient centering on patient dose and image noise in chest CT. Am J Roentgenol, 203(1): 123-30. [DOI:10.2214/AJR.13.12028]
24. Sukupova L, Vedlich D, Jiru F (2016) Consequences of the patient's mis-centering on the radiation dose and image quality in CT imaging -phantom and clinical study. Univers J Med Sci, 4(3): 102-7. [DOI:10.13189/ujmsj.2016.040304]
25. Alikhani B, Getzin T, Kaireit TF, et al. (2018) Correlation of size-dependent conversion factor and body-mass-index using size-specific dose estimates formalism in CT examinations. Eur J Radiol, 100: 130-4. [DOI:10.1016/j.ejrad.2018.01.027]
26. Boos J, Lanzman RS, Aissa J, et al. (2016) Does body mass index outperform body weight as a surrogate parameter in the calculation of size-specific dose estimates in adult body CT? Br J Radiol, 89: 1059. [DOI:10.1259/bjr.20150734]
27. Xu J, Wang X, Yang P, et al. (2020) Size-Specific Dose Estimates of Radiation Based on Body Weight and Body Mass Index for Chest and Abdomen-Pelvic CTs. Biomed Res Int, 2020: 6046501 [DOI:10.1155/2020/6046501]
28. O'Neill S, Kavanagh RG, Carey BW, et al. (2018) Using body mass index to estimate individualised patient radiation dose in abdominal computed tomography. Eur Radiol Exp, 2(1):38 [DOI:10.1186/s41747-018-0070-5]
29. Fukunaga M, Matsubara K, Ichikawa S, et al. (2021) CT dose management of adult patients with unknown body weight using an effective diameter. Eur J Radiol, 135: 109483. [DOI:10.1016/j.ejrad.2020.109483]
30. Iriuchijima A, Fukushima Y, Nakajima T, et al. (2018) Simple method of size-specific dose estimates calculation from patient weight on computed tomography. Radiat Prot Dosimetry, 178(2): 208-12. [DOI:10.1093/rpd/ncx100]
31. Kritsaneepaiboon S, Eng-Chuan S, Yoykaew S (2019) Can patient's body weight represent body diameter for pediatric size-specific dose estimate in thoracic and abdominal computed tomography? J Clin Imaging Sci, 9(24): 1-8. [DOI:10.25259/JCIS-7-2019]
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Azinkhah I, Sadeghi M. Evaluation of patients' Body Mass Index and weight as a simpler alternative method for calculating size-specific dose estimation in patients with lung computed tomography. Int J Radiat Res 2024; 22 (2) :257-264
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Volume 22, Issue 2 (4-2024) Back to browse issues page
International Journal of Radiation Research
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