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A customized bolus produced using a 3-dimensional printer for radiotherapy.

Kim SW, Shin HJ, Kay CS, Son SH - PLoS ONE (2014)

Bottom Line: Boluses are used in high-energy radiotherapy in order to overcome the skin sparing effect.In practice though, commonly used flat boluses fail to make a perfect contact with the irregular surface of the patient's skin, resulting in air gaps.The dosimetric parameters of the resulting 3D printed flat bolus showed that it was a useful dose escalating material, equivalent to a commercially available flat bolus.

View Article: PubMed Central - PubMed

Affiliation: Radiation Oncology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

ABSTRACT

Objective: Boluses are used in high-energy radiotherapy in order to overcome the skin sparing effect. In practice though, commonly used flat boluses fail to make a perfect contact with the irregular surface of the patient's skin, resulting in air gaps. Hence, we fabricated a customized bolus using a 3-dimensional (3D) printer and evaluated its feasibility for radiotherapy.

Methods: We designed two kinds of bolus for production on a 3D printer, one of which was the 3D printed flat bolus for the Blue water phantom and the other was a 3D printed customized bolus for the RANDO phantom. The 3D printed flat bolus was fabricated to verify its physical quality. The resulting 3D printed flat bolus was evaluated by assessing dosimetric parameters such as D1.5 cm, D5 cm, and D10 cm. The 3D printed customized bolus was then fabricated, and its quality and clinical feasibility were evaluated by visual inspection and by assessing dosimetric parameters such as Dmax, Dmin, Dmean, D90%, and V90%.

Results: The dosimetric parameters of the resulting 3D printed flat bolus showed that it was a useful dose escalating material, equivalent to a commercially available flat bolus. Analysis of the dosimetric parameters of the 3D printed customized bolus demonstrated that it is provided good dose escalation and good contact with the irregular surface of the RANDO phantom.

Conclusions: A customized bolus produced using a 3D printer could potentially replace commercially available flat boluses.

Show MeSH
The 3-dimensional (3D) printed customized bolus.(a) The 3D printed customized bolus, (b) the 3D printed customized bolus on the surface of the RANDO phantom, (c, d) cross sectional view of the 3D printed customized bolus, and (e, f) axial and sagittal CT images of the 3D printed customized bolus on the RANDO phantom.
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pone-0110746-g004: The 3-dimensional (3D) printed customized bolus.(a) The 3D printed customized bolus, (b) the 3D printed customized bolus on the surface of the RANDO phantom, (c, d) cross sectional view of the 3D printed customized bolus, and (e, f) axial and sagittal CT images of the 3D printed customized bolus on the RANDO phantom.

Mentions: Figure 4a shows the 3D printed customized bolus produced using the 3D printer, and Figure 4b shows it positioned on the surface of the RANDO phantom. On visual inspection, the 3D printed customized bolus was found to fit well against the surface of the RANDO phantom, and this was verified in cross section (Figure 4c, d) and by CT imaging (Figure 4e, f).


A customized bolus produced using a 3-dimensional printer for radiotherapy.

Kim SW, Shin HJ, Kay CS, Son SH - PLoS ONE (2014)

The 3-dimensional (3D) printed customized bolus.(a) The 3D printed customized bolus, (b) the 3D printed customized bolus on the surface of the RANDO phantom, (c, d) cross sectional view of the 3D printed customized bolus, and (e, f) axial and sagittal CT images of the 3D printed customized bolus on the RANDO phantom.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4206462&req=5

pone-0110746-g004: The 3-dimensional (3D) printed customized bolus.(a) The 3D printed customized bolus, (b) the 3D printed customized bolus on the surface of the RANDO phantom, (c, d) cross sectional view of the 3D printed customized bolus, and (e, f) axial and sagittal CT images of the 3D printed customized bolus on the RANDO phantom.
Mentions: Figure 4a shows the 3D printed customized bolus produced using the 3D printer, and Figure 4b shows it positioned on the surface of the RANDO phantom. On visual inspection, the 3D printed customized bolus was found to fit well against the surface of the RANDO phantom, and this was verified in cross section (Figure 4c, d) and by CT imaging (Figure 4e, f).

Bottom Line: Boluses are used in high-energy radiotherapy in order to overcome the skin sparing effect.In practice though, commonly used flat boluses fail to make a perfect contact with the irregular surface of the patient's skin, resulting in air gaps.The dosimetric parameters of the resulting 3D printed flat bolus showed that it was a useful dose escalating material, equivalent to a commercially available flat bolus.

View Article: PubMed Central - PubMed

Affiliation: Radiation Oncology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

ABSTRACT

Objective: Boluses are used in high-energy radiotherapy in order to overcome the skin sparing effect. In practice though, commonly used flat boluses fail to make a perfect contact with the irregular surface of the patient's skin, resulting in air gaps. Hence, we fabricated a customized bolus using a 3-dimensional (3D) printer and evaluated its feasibility for radiotherapy.

Methods: We designed two kinds of bolus for production on a 3D printer, one of which was the 3D printed flat bolus for the Blue water phantom and the other was a 3D printed customized bolus for the RANDO phantom. The 3D printed flat bolus was fabricated to verify its physical quality. The resulting 3D printed flat bolus was evaluated by assessing dosimetric parameters such as D1.5 cm, D5 cm, and D10 cm. The 3D printed customized bolus was then fabricated, and its quality and clinical feasibility were evaluated by visual inspection and by assessing dosimetric parameters such as Dmax, Dmin, Dmean, D90%, and V90%.

Results: The dosimetric parameters of the resulting 3D printed flat bolus showed that it was a useful dose escalating material, equivalent to a commercially available flat bolus. Analysis of the dosimetric parameters of the 3D printed customized bolus demonstrated that it is provided good dose escalation and good contact with the irregular surface of the RANDO phantom.

Conclusions: A customized bolus produced using a 3D printer could potentially replace commercially available flat boluses.

Show MeSH