Comparative photon and proton dosimetry for patients with mediastinal lymphoma in the era of Monte Carlo treatment planning and variable relative biological effectiveness

Table 1 Disease extent treated among 8 patients with mediastinal lymphoma

Patient	1	2	3	4	5	6	7	8
RT treatment plan delivered	Proton FB	Proton FB	Proton FB	Proton FB	Patient declined RT	3D conformal DIBH	Proton FB	Proton FB
Treatment fields for proton therapy planning	AP	RAO, LAO	RAO, LAO	RAO, LAO	AP	AP, RAO	AP	AP, RAO
Extent of disease involvement
Neck	B			B	B	R	L	R
Axilla				L			L
Upper mediastinum*	X	X	X	X	X	X	X	X
Mid-mediastinum**		X	X	X	X		X	X
Lower mediastinum***		X	X		X
Posterior mediastinum (behind heart)	X
Hilum	L
IMN	R

Abbreviations: AP, anterior-posterior; B, both left and right; DIBH, deep inspiration breath hold; FB, free breathing; L, left; LAO, left anterior oblique; R, right; RAO, right anterior oblique
*Disease goes down to left pulmonary artery
**Disease extends below left pulmonary artery and to inferior aspect of aortic valve
***Disease extends below level of aortic valve

ISSN: 1748-717X