Maryum Shahid (41100) creator text Islamabad (unpublished) 2024 monographic , 63 p. : ill. Col., ; 30 cm. +CD A dissertation submitted in the partial fulfillment of the requirements for the degree of Master of Philosophy in Physics Department of Basic Sciences. Includes bibliographical references Thesis supervisor: Dr. M. Waqar Ahmed Thesis (M.Phil.)--Riphah International University, 2024 English Physics External bean radiotherapy Computed tomography Rectal retraction Noteworthy Lithium DBS FEAS 530 MAR