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Manohar A, Yang J, Pack JD, Ho G, McVeigh ER. Motion correction of wide-detector 4DCT images for cardiac resynchronization therapy planning. J Cardiovasc Comput Tomogr 2024; 18:170-178. [PMID: 38242778 PMCID: PMC11087942 DOI: 10.1016/j.jcct.2024.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/11/2023] [Accepted: 01/07/2024] [Indexed: 01/21/2024]
Abstract
BACKGROUND Lead placement at the latest mechanically activated left ventricle (LV) segments is strongly correlated with response to cardiac resynchronization therapy (CRT). We demonstrate the feasibility of a cardiac 4DCT motion correction algorithm (ResyncCT) in estimating LV mechanical activation for guiding lead placement in CRT. METHODS Subjects with full cardiac cycle 4DCT images acquired using a wide-detector CT scanner for CRT planning/upgrade were included. 4DCT images exhibited motion artifact-induced false-dyssynchrony, hindering LV mechanical activation time estimation. Motion-corrupted images were processed with ResyncCT to yield motion-corrected images. Time to onset of shortening (TOS) was estimated in each of 72 endocardial segments. A false-dyssynchrony index (FDI) was used to quantify the extent of motion artifacts in the uncorrected and the ResyncCT images. After motion correction, the change in classification of LV free-wall segments as optimal target sites for lead placement was investigated. RESULTS Twenty subjects (70.7 ± 13.9 years, 6 female) were analyzed. Motion artifacts in the ResyncCT-processed images were significantly reduced (FDI: 28.9 ± 9.3 % vs 47.0 ± 6.0 %, p < 0.001). In 10 (50 %) subjects, ResyncCT motion correction yielded statistically different TOS estimates (p < 0.05). Additionally, 43 % of LV free-wall segments were reclassified as optimal target sites for lead placement after motion correction. CONCLUSIONS ResyncCT significantly reduced motion artifacts in wide-detector cardiac 4DCT images, yielded statistically different time to onset of shortening estimates, and changed the location of optimal target sites for lead placement. These results highlight the potential utility of ResyncCT motion correction in CRT planning when using wide-detector 4DCT imaging.
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Affiliation(s)
- Ashish Manohar
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University, Stanford, CA, USA; Department of Radiology, Stanford University, Stanford, CA, USA; Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - James Yang
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
| | - Jed D Pack
- Radiation Systems Lab, GE Global Research, Niskayuna, New York, USA
| | - Gordon Ho
- Department of Medicine, Division of Cardiology, University of California San Diego, La Jolla, CA, USA
| | - Elliot R McVeigh
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA; Department of Medicine, Division of Cardiology, University of California San Diego, La Jolla, CA, USA; Department of Radiology, University of California San Diego, La Jolla, CA, USA.
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Fyenbo DB, Bjerre HL, Frausing MHJP, Stephansen C, Sommer A, Borgquist R, Bakos Z, Glikson M, Milman A, Beinart R, Kockova R, Sedlacek K, Wichterle D, Saba S, Jain S, Shalaby A, Kronborg MB, Nielsen JC. Targeted left ventricular lead positioning to the site of latest activation in cardiac resynchronization therapy: a systematic review and meta-analysis. Europace 2023; 25:euad267. [PMID: 37695316 PMCID: PMC10507669 DOI: 10.1093/europace/euad267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023] Open
Abstract
AIMS Several studies have evaluated the use of electrically- or imaging-guided left ventricular (LV) lead placement in cardiac resynchronization therapy (CRT) recipients. We aimed to assess evidence for a guided strategy that targets LV lead position to the site of latest LV activation. METHODS AND RESULTS A systematic review and meta-analysis was performed for randomized controlled trials (RCTs) until March 2023 that evaluated electrically- or imaging-guided LV lead positioning on clinical and echocardiographic outcomes. The primary endpoint was a composite of all-cause mortality and heart failure hospitalization, and secondary endpoints were quality of life, 6-min walk test (6MWT), QRS duration, LV end-systolic volume, and LV ejection fraction. We included eight RCTs that comprised 1323 patients. Six RCTs compared guided strategy (n = 638) to routine (n = 468), and two RCTs compared different guiding strategies head-to-head: electrically- (n = 111) vs. imaging-guided (n = 106). Compared to routine, a guided strategy did not significantly reduce the risk of the primary endpoint after 12-24 (RR 0.83, 95% CI 0.52-1.33) months. A guided strategy was associated with slight improvement in 6MWT distance after 6 months of follow-up of absolute 18 (95% CI 6-30) m between groups, but not in remaining secondary endpoints. None of the secondary endpoints differed between the guided strategies. CONCLUSION In this study, a CRT implantation strategy that targets the latest LV activation did not improve survival or reduce heart failure hospitalizations.
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Affiliation(s)
- Daniel Benjamin Fyenbo
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
- Diagnostic Center, Silkeborg Regional Hospital, Falkevej 1A, 8600 Silkeborg, Denmark
| | - Henrik Laurits Bjerre
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
| | - Maria Hee Jung Park Frausing
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
| | - Charlotte Stephansen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Anders Sommer
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
| | | | - Zoltan Bakos
- Department of Cardiology, Kristianstad Hospital, Kristianstad, Sweden
| | - Michael Glikson
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Anat Milman
- Leviev Heart Institute, The Chaim Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Roy Beinart
- Leviev Heart Institute, The Chaim Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Radka Kockova
- Department of Cardiac Surgery, Na Homolce Hospital, Prague, Czech Republic
| | - Kamil Sedlacek
- 1st Department of Internal Medicine—Cardiology and Angiology, University Hospital, Hradec Králové, Czech Republic
- Faculty of Medicine, Charles University, Hradec Králové, Czech Republic
| | - Dan Wichterle
- Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Samir Saba
- Heart and Vascular Institute, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Sandeep Jain
- Heart and Vascular Institute, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Alaa Shalaby
- Heart and Vascular Institute, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Mads Brix Kronborg
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
| | - Jens Cosedis Nielsen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
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