Effectiveness of a breath-hold monitoring system in improving the reproducibility of different breath-hold positions in multiphasic CT imaging

Lars J Grimm; Sebastian Feuerlein; Mustafa Bashir; Rendon C Nelson

doi:10.1016/j.clinimag.2012.01.040

Effectiveness of a breath-hold monitoring system in improving the reproducibility of different breath-hold positions in multiphasic CT imaging

Clin Imaging. 2012 Nov-Dec;36(6):754-7. doi: 10.1016/j.clinimag.2012.01.040. Epub 2012 Jun 8.

Authors

Lars J Grimm¹, Sebastian Feuerlein, Mustafa Bashir, Rendon C Nelson

Affiliation

¹ Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA. [email protected]

PMID: 23154005
DOI: 10.1016/j.clinimag.2012.01.040

Abstract

This study tests whether the utilization of an electronic breath-hold monitoring device improves breath-hold reproducibility during computed tomographic (CT) scanning. Two cohorts of 40 patients underwent dual-phase abdominal CT scans, either with a breath-hold monitoring device or with the standard breath-holding technique. Two blinded readers measured the differences in diaphragmatic position between phases. There was no statistical difference in diaphragmatic position (P=.14) between the monitored (8.5±11.5 mm) and control (5.6±5.2 mm) cohorts. Ten percent of patients from the monitored cohort had greater than 20 mm of deviation, versus 0%-2.5% for the control cohort. Reproduction of breath-holding position remains challenging, even with a monitoring system.

Publication types

Evaluation Study

MeSH terms

Artifacts*
Biofeedback, Psychology / instrumentation*
Biofeedback, Psychology / methods
Breath Holding*
Equipment Design
Equipment Failure Analysis
Humans
Image Enhancement / methods*
Patient Positioning / instrumentation*
Patient Positioning / methods
Reproducibility of Results
Sensitivity and Specificity
Single-Blind Method
Tomography, X-Ray Computed / instrumentation*
Tomography, X-Ray Computed / methods