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Table 2 Description for DWI image quality scales

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

Scale

Description

0

Image has no diagnosis valuea; tumour or rectal wall is undetectable.

1

Image quality is unacceptable or insufficienta; tumour or rectal wall is poorly visible.

2

Image has moderate qualitya; tumour or rectal wall is visible but not delineable.

3

Image has good qualitya; tumour or rectal wall is delineable but without details.

4

Image has excellent qualitya; tumour or rectal wall is delineable with details.

  1. 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