What monitor size is recommended by the American College of Radiography (ACR) for routine radiography?

• A. 2 MP
• B. 5 MP
• C. 3 MP
• D. 4 MP

Answer: (C)

The display resolution used for routine radiography is the main idea here. The ACR sets a minimum standard to ensure radiographs can be read accurately on a monitor during everyday interpretation. A monitor with three megapixels provides enough pixel density (about 2048 by 1536) to show the necessary anatomical detail, support effective windowing and post-processing, and allow the radiologist to view the image at a comfortable size without losing subtle features. A 2 MP display often cannot present the full DR image clearly at typical viewing sizes, making it harder to detect small details. Higher-resolution displays, such as 4 or 5 MP, are more common for specialized tasks or higher-detail work like mammography, but for routine radiography the baseline recommendation is three megapixels.