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Table 3 Evaluation criterion of imaging quality

From: Assessment of breast arteries and lymph nodes by 3D MR angiography enhancement imaging: feasibility and pilot clinical results

Grade Standard
5 (Excellent) Clear display of vessels and their branches (complete and continuous); clear display of lymph nodes (quantity and distribution)
4 (Good) Between grade 5 and grade 3
3 (General) Partially display of vessels and branches (lost beginning or ending or display segmentally); partially display of lymph nodes
2 (Medium) Between grade 3 and grade 1
1 (Poor) Not display vessels and lymph nodes, affected by noise seriously