Research Article
A Novel Random Error Approximate Adder-Based Lightweight Medical Image Encryption Scheme for Secure Remote Monitoring of Health Data
Table 5
Measured entropy values of sample images before and after encryption.
| | Modality | Sample image | Size | Entropy | | Plain image | Encrypted image |
| | X-ray | Chest | 512 × 512 | 7.5509 | 7.9913 | | CT scan | Chest | 512 × 512 | 6.4985 | 7.9838 | | MRI | Brain | 512 × 512 | 5.4162 | 7.9687 | | Ultrasound | Fetal | 512 × 512 | 7.2543 | 7.9899 | | PET | Brain | 256 × 256 | 5.9094 | 7.9850 |
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