TABLE 1.

Intraoperative fluorescence in high-grade gliomas

Case No.	Histopathology	Blue Light (visual)	Blue Light (quantitative)	Red Light (spectrally fit)
3	GBM	3	3	3
4	GBM	2	3	3
5	GBM	2	2	2
8	GBM	2	2	2
9	Recurrent GBM	2	3	3
10	AOA	1	1	0
14	AA	0	1	0
15	Recurrent GBM	2	2	2
18	GBM	1	1	1
22	GBM	2	2	1*
24	GBM	3	3	3
26	Recurrent GBM	2	2	1

AA = anaplastic astrocytoma; AOA = anaplastic oligoastrocytoma; blue light (visual) = maximal visually perceived fluorescence under blue-light excitation; blue light (quantitative) = maximal PpIX concentration estimate using blue-light excitation, multispectral camera, and correction for optical properties; red light (spectrally fit) = maximal PpIX concentration estimate using red-light excitation and hyperspectral camera.

Visual fluorescence was graded as none (0), low (1), moderate (2), or high (3).

^*Red-light image not acquired at site of maximum quantitative blue-light fluorescence.