Table 1:

Comparison of percentage change in CT perfusion parameters with endoscopic reduction in tumor volume

Patient No.	Primary Site	CTP Parameters % Change				Endoscopic Tumor Volume Reduction (%)
Patient No.	Primary Site	BF	BV	CP	MTT	Endoscopic Tumor Volume Reduction (%)
1	Tongue base	−0.8	−54	−6	−48	70
2	Valeculla	−96	−69	−64	69	100
3	Tonsil	−64	−20	−41	49	50
4	Tonsil	−66	24	−28	69	90
5	Tongue base	−20	−24	10	18	50
6	Tongue base	−43	−8	−3.6	30	0
7	Tongue base	40	37	3.4	−11	20
8	Tongue base	−23	−29	−2	15	90
9	Glossotonsillar sulcus	−82	−66	−56	72	70

Note:—Negative sign indicates reduction and positive values indicates interval increase in the parameter value on follow-up study. Nonresponders are presented in bold italics.