Noise & health · 2026
Retrospective Study on the Effect of Gradient Noise Exposure Desensitization Training prior to Magnetic Resonance Imaging on Anxiety Levels and Image Quality in Patients with Brain Tumors.
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Cai XueTong, Gu ZiYi
Аннотация
OBJECTIVE: This study aimed to investigate the effects of pre-magnetic resonance imaging (MRI) gradient noise exposure desensitization training on anxiety and MRI image quality in patients with brain tumors and to provide clinical evidence for optimizing MRI protocols.
METHODS: We conducted a retrospective analysis of 100 patients with brain tumors who underwent brain MRI, dividing them into an observation group ( n = 50, desensitization training + routine nursing) and a control group ( n = 50, routine nursing alone). Group comparisons were performed using analysis of covariance or the chi-square test. We evaluated self-rating anxiety scale (SAS) scores, MRI image quality (signal-to-noise ratio [SNR], artifact grade, and anatomical clarity), incidence of adverse reactions, and examination duration.
RESULTS: No significant difference in SAS score was observed between the two groups 15 min before examination ( P > 0.05). After the examination, the observation group had a significantly lower adjusted mean SAS score (38.62, 95% CI: 37.48-39.76) than the control group (45.53, 95% CI: 44.39-46.67) ( P < 0.001), a higher proportion of excellent image quality (42/50, 84.0% versus 28/50, 56.0%, P = 0.002), superior signal-to-noise ratio (SNR) and anatomical clarity, lower artifact grades (all P < 0.05), a lower incidence of adverse reaction (6.00% versus 20.00%, P = 0.074), and a shorter examination duration (28.45 ± 3.16 min versus 33.72 ± 4.23 min, P < 0.05).
CONCLUSION: Pre-MRI gradient noise desensitization training effectively alleviates anxiety, shortens examination duration, and improves MRI image quality in patients with brain tumors, supporting its clinical promotion value.
METHODS: We conducted a retrospective analysis of 100 patients with brain tumors who underwent brain MRI, dividing them into an observation group ( n = 50, desensitization training + routine nursing) and a control group ( n = 50, routine nursing alone). Group comparisons were performed using analysis of covariance or the chi-square test. We evaluated self-rating anxiety scale (SAS) scores, MRI image quality (signal-to-noise ratio [SNR], artifact grade, and anatomical clarity), incidence of adverse reactions, and examination duration.
RESULTS: No significant difference in SAS score was observed between the two groups 15 min before examination ( P > 0.05). After the examination, the observation group had a significantly lower adjusted mean SAS score (38.62, 95% CI: 37.48-39.76) than the control group (45.53, 95% CI: 44.39-46.67) ( P < 0.001), a higher proportion of excellent image quality (42/50, 84.0% versus 28/50, 56.0%, P = 0.002), superior signal-to-noise ratio (SNR) and anatomical clarity, lower artifact grades (all P < 0.05), a lower incidence of adverse reaction (6.00% versus 20.00%, P = 0.074), and a shorter examination duration (28.45 ± 3.16 min versus 33.72 ± 4.23 min, P < 0.05).
CONCLUSION: Pre-MRI gradient noise desensitization training effectively alleviates anxiety, shortens examination duration, and improves MRI image quality in patients with brain tumors, supporting its clinical promotion value.