This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CT SCAN, Subject name: Radiology
Bone algorithm is used as a principle in which of the following modality? 
Select and explain. 
A. Spiral CT, B. Multidetector CT, C. Dual source CT, D. HRCT
D: HRCT
Answer: D: HRCT 
Explanation: High resolution CT: It is a scanning protocol in which thin sections (usually 0.625 to 1.25 mm) are acquired and reconstructed using Bone Algorithm, which is a high spatial resolution reconstruction and improves image sharpness and clarity of pulmonary parenchyma.