Locally advanced rectal cancer: 3D diffusion-prepared stimulated-echo turbo spin-echo versus 2D diffusion-weighted echo-planar imaging

European Radiology Experimental

Table 2 Description for DWI image quality scales

Scale	Description
0	Image has no diagnosis value^a; tumour or rectal wall is undetectable.
1	Image quality is unacceptable or insufficient^a; tumour or rectal wall is poorly visible.
2	Image has moderate quality^a; tumour or rectal wall is visible but not delineable.
3	Image has good quality^a; tumour or rectal wall is delineable but without details.
4	Image has excellent quality^a; tumour or rectal wall is delineable with details.

^aSix aspects of the image quality are scored. They are fat-suppression, image sharpness, presence of motion artifacts, rectum distortion, signal pile-up and overall quality