Doppler ultrasound compared with electrocardiogram and pulse oximetry cardiac triggering: A pilot study
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Doppler ultrasound compared with electrocardiogram and pulse oximetry cardiac triggering: A pilot study. / Kording, Fabian; Schoennagel, Bjoern; Lund, Gunnar; Ueberle, Friedrich; Jung, Caroline; Adam, Gerhard; Yamamura, Jin.
In: MAGN RESON MED, Vol. 74, No. 5, 11.2015, p. 1257-1265.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Doppler ultrasound compared with electrocardiogram and pulse oximetry cardiac triggering: A pilot study
AU - Kording, Fabian
AU - Schoennagel, Bjoern
AU - Lund, Gunnar
AU - Ueberle, Friedrich
AU - Jung, Caroline
AU - Adam, Gerhard
AU - Yamamura, Jin
N1 - © 2014 Wiley Periodicals, Inc.
PY - 2015/11
Y1 - 2015/11
N2 - PURPOSE: Accurate triggering of the cardiac cycle is mandatory for optimal image acquisition and thus diagnostic quality in cardiac magnetic resonance imaging. The purpose of this work was to evaluate Doppler ultrasound as an alternative trigger method in cardiac MRI.METHODS: Steady-state free precession (SSFP) 2D cine CMR was performed in 11 healthy subjects at 1.5T. Doppler ultrasound (DUS), electrocardiogram (ECG) and pulse oximetry (POX) were used for cardiac triggering. DUS peak detection was verified in comparison to ECG. Quantitative analysis of image quality of each gating method was determined by calculating endocardial border sharpness (EBS) and left ventricular (LV) function parameters and compared with ECG.RESULTS: Mean difference between DUS and ECG in detected RR intervals was 0.04 ± 63 ms (r = 0.96). Trigger jitter was not different between ECG and DUS (P = 0.15) but significant different between ECG and POX (P = 0.01). EBS was similar between each method (3.1 ± 0.2 / 2.6 ± 0.2 / 2.9 ± 0.2 pixel). Mean differences in stroke volume were not significantly different with -1 ± 7 mL (ECG/DUS, P = 0.9) and 2 ± 10 mL (ECG/POX, P = 0.8).CONCLUSION: Cine cardiac MRI using DUS was successfully demonstrated. DUS triggering is an alternative method for cardiac MRI and may be applied in a clinical setting. Magn Reson Med, 2014. © 2014 Wiley Periodicals, Inc.
AB - PURPOSE: Accurate triggering of the cardiac cycle is mandatory for optimal image acquisition and thus diagnostic quality in cardiac magnetic resonance imaging. The purpose of this work was to evaluate Doppler ultrasound as an alternative trigger method in cardiac MRI.METHODS: Steady-state free precession (SSFP) 2D cine CMR was performed in 11 healthy subjects at 1.5T. Doppler ultrasound (DUS), electrocardiogram (ECG) and pulse oximetry (POX) were used for cardiac triggering. DUS peak detection was verified in comparison to ECG. Quantitative analysis of image quality of each gating method was determined by calculating endocardial border sharpness (EBS) and left ventricular (LV) function parameters and compared with ECG.RESULTS: Mean difference between DUS and ECG in detected RR intervals was 0.04 ± 63 ms (r = 0.96). Trigger jitter was not different between ECG and DUS (P = 0.15) but significant different between ECG and POX (P = 0.01). EBS was similar between each method (3.1 ± 0.2 / 2.6 ± 0.2 / 2.9 ± 0.2 pixel). Mean differences in stroke volume were not significantly different with -1 ± 7 mL (ECG/DUS, P = 0.9) and 2 ± 10 mL (ECG/POX, P = 0.8).CONCLUSION: Cine cardiac MRI using DUS was successfully demonstrated. DUS triggering is an alternative method for cardiac MRI and may be applied in a clinical setting. Magn Reson Med, 2014. © 2014 Wiley Periodicals, Inc.
U2 - 10.1002/mrm.25502
DO - 10.1002/mrm.25502
M3 - SCORING: Journal article
C2 - 25359183
VL - 74
SP - 1257
EP - 1265
JO - MAGN RESON MED
JF - MAGN RESON MED
SN - 0740-3194
IS - 5
ER -
