High - resolution CT of the lung is a specialized CT technique for greater detail of lung parenchyma and it utilizes -: (A) Special lung filters, (B) Thick collimation, (C) Bone algorithm for image reconstruction, (D) Large field of view
Answer is C. Principles of HRCT are:-

             i)  Narrow beam collimation (thin collimation)
             ii)  High-frequency reconstruction algorithm, e.g. bone algorithm
             iii) Small field of vision