Törnqvist E, Månsson A, Larsson E M, Hallström I
Department of Health Sciences, Lund University, Lund, Sweden.
Acta Radiol. 2006 Jun;47(5):474-80. doi: 10.1080/02841850600690355.
To evaluate whether increased written information to patients prior to magnetic resonance imaging (MRI) decreases patient anxiety and image motion artifacts.
A two-group controlled experimental design was used. Of 242 patients, 118 received routinely given basic written information (control group) while 124 were given increased written information (intervention group). To measure patient anxiety before and during scanning, the self-report psychometric test State-Trait Anxiety Inventory (STAI) was used. After MR examination, the patients answered a questionnaire on satisfaction with the written information. The images were assessed with regard to motion artifacts.
Motion artifacts were present in fewer patient images in the intervention group than in the control group (4.0% versus 15.4%,; P=0.003). There was no significant difference between the control and the intervention group regarding patient anxiety and satisfaction with the information. Women in both groups showed a higher level of anxiety than the men did.
Increased information about the MRI scanning procedure and expected experiences during the scan may help patients to lie still during the sequences, with a decrease in motion artifacts. However, further research is needed to evaluate the effect of other interventions on patient anxiety during MRI scanning.
评估在磁共振成像（MRI）检查前向患者提供更多书面信息是否能降低患者的焦虑程度以及减少图像运动伪影。
采用两组对照实验设计。242例患者中，118例接受常规提供的基本书面信息（对照组），124例接受更多书面信息（干预组）。使用自陈式心理测量测试状态-特质焦虑量表（STAI）来测量扫描前和扫描过程中患者的焦虑程度。在磁共振检查后，患者回答一份关于对书面信息满意度的问卷。对图像的运动伪影进行评估。
干预组患者图像中出现运动伪影的数量少于对照组（4.0%对15.4%；P = 0.003）。在患者焦虑程度和对信息的满意度方面，对照组和干预组之间没有显著差异。两组中的女性均比男性表现出更高的焦虑水平。
关于MRI扫描程序及扫描期间预期体验的更多信息可能有助于患者在扫描过程中保持静止，从而减少运动伪影。然而，需要进一步研究来评估其他干预措施对MRI扫描期间患者焦虑的影响。
