1. Volume 6, Issue 6, Pages 742-748 (June 2009)
Temporary leadless pacing in heart failure patients with ultrasound-mediated stimulation energy and effects on the acoustic window 
Kathy L. Lee, MBBS, Hung-Fat Tse, MD, PhD, Debra S. Echt, MD, FHRS, Chu-Pak Lau, MD, FHRS 
Heart Rhythm 
Volume 6, Issue 6, Pages (June 2009)
DOI: /j.hrthm
Copyright © 2009 Heart Rhythm Society Terms and Conditions

2. Figure 1
Fluoroscopic appearance (left anterior oblique view) of the receiver electrodes (arrows) on the delivery catheter positioned endocardially on the lateral wall of the left ventricle in 1 patient.
Heart Rhythm 2009 6, DOI: ( /j.hrthm )
Copyright © 2009 Heart Rhythm Society Terms and Conditions

3. Figure 2
An example of clinically determined acoustic windows in 4 body positions (in red with the patient lying supine; in green with 30° right tilt; in yellow with 30° left tilt; in purple with 30° upright tilt) superimposed on the CT-determined acoustic window (in light blue with the patient lying supine and during end inspiration) on 3D reconstruction CT of the thorax. 3D = three-dimensional; CT = computed tomography.
Heart Rhythm 2009 6, DOI: ( /j.hrthm )
Copyright © 2009 Heart Rhythm Society Terms and Conditions

4. Figure 3
An example of changes in acoustic windows obtained by computed tomography of the thorax with various body positioning and respiratory phrases. A: Acoustic window in green when the patient was lying supine and during end inspiration. B: Acoustic window in red during end inspiration when the patient was lying on the right side. C: Acoustic window in black during end expiration when the patient was lying on the right side.
Heart Rhythm 2009 6, DOI: ( /j.hrthm )
Copyright © 2009 Heart Rhythm Society Terms and Conditions