Effect of ultrasonic coupling agent-soft rubber bag padding method on DWI image quality of testis / 中国医学影像技术

ABSTRACT

Objective To explore an auxiliary method to improve DWI image quality of testis.Methods Thirty healthy male volunteers were selected,and EPI-DWI and FSE-T2WI scanning with the same parameters were successively performed according to three different schemes.Scheme APadding ultrasonic coupling agent-soft rubber bag at the scanning position.Scheme BPadding physiological saline-soft rubber bag at the scanning position.Scheme CNo preexamination treatment at the scanning position.FSE-T2WI (the same scheme and the same slice) was used as the reference of anatomic form,and the images were conducted by two attending doctors.The image geometric distortion,signal uniformity and anatomical clarity were scored by 5 points method.SNR and CNR of were calculated by one of the two doctors.The scoring consistency between the two doctors was evaluated.The scoring of image geometric distortion,signal uniformity,anatomic clarity,SNR and CNR of the three schemes were statistically analyzed.Results The scoring consistency of image geometrical distortion,signal uniformity and anatomical clarity of the three schemes were relatively good or better between the two doctors (Kappa=0.805,0.737 and 0.713).There were significant differences of image geometrical distortion,signal uniformity and anatomical clarity scoring obtained from three schemes (comparisons between groups and overall comparison,all P＜ 0.05),superiorityScheme A＞ Scheme B＞ Scheme C.Conclusion Ultrasonic coupling agent-soft rubber bag padding method can significantly improve DWI imaging quality of testis.