The invention provides a micro-
enema preparation and quantitative evaluation method for improving the quality of a
rectum magnetic
resonance image, and the method comprises the steps: S2, carrying out a glycerine
enema micro-
enema operation, squeezing glycerine enema into the
rectum, maintaining the operation for a preset time, and recording the
defecation frequency and the last
defecation character; s3, selecting the dosage of the microenema enema, carrying out grouped experiments by setting a plurality of doses, recording related scores, and selecting the dosage of the enema enema meeting clinical requirements; s4, selecting an on-
machine time window before magnetic
resonance examination after microenema, performing
rectum magnetic
resonance examination at a plurality of time nodes after
defecation through grouping experiments, observing related scores, and selecting an on-
machine time window with a good intestinal tract preparation effect; and S5, carrying out micro-enema adverse reaction evaluation, evaluating a plurality of grades of the subject, calculating an adverse reaction
score according to
a weighting formula, carrying out
clinical decision making, and if the adverse reaction
score is lower than a threshold value, terminating the operation and carrying out further
processing.