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  Indian J Med Microbiol
 

Figure 2: Head-and-neck case: (a) Computed tomography slice showing contoured structures. (b) Beam arrangement where three pairs of all six fields are parallel opposed viz. 20-200°, 340-160°, and 90-270°

Figure 2: Head-and-neck case: (a) Computed tomography slice showing contoured structures. (b) Beam arrangement where three pairs of all six fields are parallel opposed viz. 20-200°, 340-160°, and 90-270°