Dosimetric comparison between helical tomotherapy and volumetric modulated arc-therapy for non-anaplastic thyroid cancer treatment

Table 1 Patient and tumor characteristics

Patient	Pathological subtypes	Subsites	TNM	Neck levels involved	Nodal extracapsular spread	Surgical margin status	PTV 63	PTV 54
							Volume (cm ³)/	Volume (cm ³)/
							Height (cm)	Height (cm)
1	Medullary	Right lobe	T3N1a	R: VI	Y	R1	298.55/13.26	534.84/18.42
2	Medullary	Left lobe	T4aN1b	R: VI	Y	R1	490.76/14.54	954.89/20.62
2	Medullary	Left lobe	T4aN1b	L: II, III, V, VI	Y	R1	490.76/14.54	954.89/20.62
3	Vesicular	Bilateral	T4aN0	-	-	R2	254.54/11.36	500.39/13.36
4	Medullary	Right lobe	T2N1b	R: IIA, III, IV, V, VI	Y	R0	-	641.07/20.78
4	Medullary	Right lobe	T2N1b	L: VI	Y	R0	-	641.07/20.78
5	Medullary	Bilateral	T3N1b	L: IIA, VI	Y	R1	93.3/10.62	262.36/18.33
5	Medullary	Bilateral	T3N1b	R: VI	Y	R1	93.3/10.62	262.36/18.33
6	Medullary	Right lobe	T2N1b	R: III, IV, VI	Y	R0	206.97/13.37	545.01/18.66
7	Papillary	Bilateral	T4aN1a	R: VI	Y	R1	124.11/5.9	-
8	Papillary	Left lobe	T4aN1b	L: III, IV, VI	Y	R1	39.39/4.24	247.87/14.92
9	Medullary	Right lobe	T3N1b	R: III, VI	Y	R1	83.52/8.59	300.35/16.07
10	Medullary	Left lobe	T3N1b	L: IV, VI	Y	R1	405.82/22.43	596.87/22.43
10	Medullary	Left lobe	T3N1b	R: VI, VII	Y	R1	405.82/22.43	596.87/22.43
11	Papillary	Bilateral	T3N1b	R: IV, VI	Y	R0	51.36/6.02	361.89/17.35
12	Papillary	Left lobe	T4aN1a	L: VI	N	R1	95.08/8.44	201.39/13.12
Average							194.85/10.8	467.91/17.64

R = right; L = left; R0 = no residual tumor; R1 = microscopic residual tumor; R2 = macroscopic residual tumor; Y = yes; N = No.

ISSN: 1748-717X