Analysis of seven clinical X-ray table mattress for their impact on image quality and radiation dose

Congress:

ECR 2020

Poster Number:

C-09595

Type:

Scientific Exhibit

Keywords:

Performed at one institution, Experimental, Not applicable, Kv imaging, Image verification, Cancer, Radiation safety, Dosimetry, Computer Applications-Detection, diagnosis, Digital radiography, Conventional radiography, Radioprotection / Radiation dose, Radiographers, Radiation physics, Radiation Protection

Authors:

N. M. T. Alresheedi¹, S. Al-Murshedi², A. K. Tootell¹, J.-A. webb¹, L. A. Walton¹, P. Hogg¹; ¹Salford/UK, ²Karbala/IQ

DOI:

10.26044/ecr2020/C-09595

DOI-Link:

https://dx.doi.org/10.26044/ecr2020/C-09595

Fig. 1: . (a) CDRAD 2.0 phantom. (b) CDRAD 2.0 x-ray image.

Fig. 2: Experimental setup for CDRAD phantom imaging with and without mattress

Fig. 3: Experimental setup for radiation dose measurements with and without mattress.

Fig. 4: Radiation dose (represented by IAK) values measured with and without using the...

Purpose

X-ray table mattresses should not reduce image quality (IQ), or misdiagnosis may occur. Equally, X-ray table mattresses should not overly attenuate radiation, or patient dose may have to increase in order to produce an image of suitable quality. A review of the literature indicated no study had investigated the influence of x-ray table mattresses on IQ and radiation dose. This work investigates seven x-ray table mattress, that are used in practice, for their impact on IQ and radiation dose.

Methods and materials

Seven X-ray table mattresses, each of 2.5cm thickness of different ages and different manfacturers, were examined in terms of their influence on IQ and radiation dose. The CDRAD 2.0 phantom (Artinis Medical System, The Netherlands) (Figure 1) combined with 17.5 cm of polymethyl methacrylate (PMMA) slabs was used for IQ evaluation. CDRAD phantom is widely used in the literature for image quality evaluation [1–3] and it was found to have a good correlation with visual image quality and lesion visibility [4,5]. The ‘CDRAD+PMMA’ phantom was...

Results

Figures 4 and 5 illustrate the variation in radiation dose (IAK) and IQ (IQFinv), respectively with and without using the seven different mattresses across the ten image acquisition protocol. A statistically significant increase (p

Conclusion

All seven X-ray mattresses imposed a statistically significant radiation dose increase. For IQ, there was a statistically significant decrease in IQ for five of the seven mattresses. Presently there is no accepted value for IQ reduction or radiation dose increase imposed by X-ray table mattresses, so it is hard to draw conclusion from our work. That said, perhaps clinically acceptable standards need setting for IQ and dose for X-ray table mattresses.

Personal information and conflict of interest

N. M. T. Alresheedi; Salford/UK - nothing to disclose P. H. Hogg; Salford/UK - nothing to disclose A. K. Tootell; Salford/UK - nothing to disclose J.-A. Webb; Salford/UK - nothing to disclose L. A. Walton; Salford/UK - nothing to disclose S. Al-Murshedi; Karbala/IQ - nothing to disclose

References

[1]Al-Murshedi S, Hogg P, Lanca L, England A. A novel method for comparing radiation dose and image quality, between and within different X-ray units in a series of hospitals. J Radiol Prot 2018. doi:10.1088/1361-6498/aae3fa. [2]Al-Murshedi S, Hogg P, Meijer A, Erenstein H, England A. Comparative analysis of radiation dose and low contrast detail detectability using routine paediatric chest radiography protocols. Eur J Radiol 2019;113:198–203. doi:10.1016/j.ejrad.2019.02.017. [3]Geijer H, Beckman K-W, Andersson T, Persliden J. Image quality vs radiation dose for a flat-panel amorphous silicon detector: a...