The Scientific World Journal

Clinical Study

Delivery Parameter Variations and Early Clinical Outcomes of Volumetric Modulated Arc Therapy for 31 Prostate Cancer Patients: An Intercomparison of Three Treatment Planning Systems

Table 2

Comparison of plans created by ERGO++, Monaco, and SmartArc in terms of the DVH parameters for the PTV and OARs, the total MUs, the beam-on time, and the mean dose rate during delivery. For each category, the Kruskal-Wallis test was employed to identify differences in the means among plans created by the three different TPSs using values. Subsequently, Dunn’s multiple comparison test was performed for the cases with to compare the means between plans created by each pair of the three TPSs. The symbols + and − indicate that the difference is significant and insignificant, respectively, with a threshold probability of 5%.


	ERGO++	Monaco	SmartArc	value	ERGO++ versus Monaco	ERGO++ versus SmartArc	Monaco versus SmartArc

PTV
(Gy)				<0.01	+	+	−
(Gy)				<0.01	+	+	−
(Gy)				0.04	−	−	−
Conformity index				<0.01	−	+	−
Homogeneity index				<0.01	+	−	−
Rectum
(Gy)				<0.01	+	−	−
(%)				0.02	+	−	−
(%)				0.82
(%)				0.21
(%)				0.77
Bladder
(Gy)				0.37
(%)				0.79
(%)				0.79
(%)				0.75
(%)				0.68
Right femoral head
(Gy)				<0.01	+	−	+
Left femoral head
(Gy)				<0.01	+	−	+
MU				<0.01	+	−	+
Beam-on time (second)				<0.01	+	−	+
Dose rate (MU/min)				<0.01	+	−	+