Claustrophobia during magnetic resonance imaging: Cohort study in over 55,000 patients
M. Dewey, T. Schink, and C. Dewey. Journal of Magnetic Resonance Imaging, 26 (5):
1322-1327(October 2007)
Abstract
Purpose
To evaluate whether MR scanners with acoustic noise reduction and a short magnetic bore reduce the rate of claustrophobic reactions.
Materials and Methods
We performed a cohort study in an outpatient setting, enrolling a total of 55,734 consecutive patients referred for MRI of any part of the body based on a clinical indication. Imaging was performed using a conventional MR scanner (42,998 patients) and a recently developed MR scanner (12,736 patients) with 97% acoustic noise reduction and a short bore. Multiple logistic regression analysis was used to adjust for the nonrandomized design.
Results
In addition to those undergoing head-first examinations, female and middle-aged patients were significantly more likely to develop claustrophobia in the logistic regression analysis (P < 0.001). The rate of claustrophobic reactions was significantly lower with the recent MR scanner (0.7%; 95% confidence interval CI: 0.6-0.9%) than with the conventional scanner (2.1%; 95% CI, 2.0-2.3%; P < 0.001) with an adjusted odds ratio (OR) of 3.1 (95% CI, 2.5-3.9) and a number needed to treat of 72 (95% CI, 63-85).
Conclusion
The incidence of claustrophobia may be reduced by a factor of 3 when recently-developed MR scanners are used.
%0 Journal Article
%1 DeweyScDe2007
%A Dewey, Marc
%A Schink, Tania
%A Dewey, Charles F.
%D 2007
%J Journal of Magnetic Resonance Imaging
%K claustrophobia mri ptmri
%N 5
%P 1322-1327
%T Claustrophobia during magnetic resonance imaging: Cohort study in over 55,000 patients
%U http://dx.doi.org/10.1002/jmri.21147
%V 26
%X Purpose
To evaluate whether MR scanners with acoustic noise reduction and a short magnetic bore reduce the rate of claustrophobic reactions.
Materials and Methods
We performed a cohort study in an outpatient setting, enrolling a total of 55,734 consecutive patients referred for MRI of any part of the body based on a clinical indication. Imaging was performed using a conventional MR scanner (42,998 patients) and a recently developed MR scanner (12,736 patients) with 97% acoustic noise reduction and a short bore. Multiple logistic regression analysis was used to adjust for the nonrandomized design.
Results
In addition to those undergoing head-first examinations, female and middle-aged patients were significantly more likely to develop claustrophobia in the logistic regression analysis (P < 0.001). The rate of claustrophobic reactions was significantly lower with the recent MR scanner (0.7%; 95% confidence interval CI: 0.6-0.9%) than with the conventional scanner (2.1%; 95% CI, 2.0-2.3%; P < 0.001) with an adjusted odds ratio (OR) of 3.1 (95% CI, 2.5-3.9) and a number needed to treat of 72 (95% CI, 63-85).
Conclusion
The incidence of claustrophobia may be reduced by a factor of 3 when recently-developed MR scanners are used.
@article{DeweyScDe2007,
abstract = {Purpose
To evaluate whether MR scanners with acoustic noise reduction and a short magnetic bore reduce the rate of claustrophobic reactions.
Materials and Methods
We performed a cohort study in an outpatient setting, enrolling a total of 55,734 consecutive patients referred for MRI of any part of the body based on a clinical indication. Imaging was performed using a conventional MR scanner (42,998 patients) and a recently developed MR scanner (12,736 patients) with 97% acoustic noise reduction and a short bore. Multiple logistic regression analysis was used to adjust for the nonrandomized design.
Results
In addition to those undergoing head-first examinations, female and middle-aged patients were significantly more likely to develop claustrophobia in the logistic regression analysis (P < 0.001). The rate of claustrophobic reactions was significantly lower with the recent MR scanner (0.7%; 95% confidence interval [CI]: 0.6-0.9%) than with the conventional scanner (2.1%; 95% CI, 2.0-2.3%; P < 0.001) with an adjusted odds ratio (OR) of 3.1 (95% CI, 2.5-3.9) and a number needed to treat of 72 (95% CI, 63-85).
Conclusion
The incidence of claustrophobia may be reduced by a factor of 3 when recently-developed MR scanners are used.},
added-at = {2009-04-23T17:26:07.000+0200},
author = {Dewey, Marc and Schink, Tania and Dewey, Charles F.},
biburl = {https://www.bibsonomy.org/bibtex/25dbd77da288382ee6068a0d1fd89fcc4/toby},
interhash = {89b8eb59497d308e4957c5e2187fe519},
intrahash = {5dbd77da288382ee6068a0d1fd89fcc4},
journal = {Journal of Magnetic Resonance Imaging},
keywords = {claustrophobia mri ptmri},
month = {October},
number = 5,
pages = {1322-1327},
timestamp = {2009-04-23T17:26:07.000+0200},
title = {Claustrophobia during magnetic resonance imaging: Cohort study in over 55,000 patients},
url = {http://dx.doi.org/10.1002/jmri.21147},
volume = 26,
year = 2007
}