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Detailed Analysis of Cardiac Activation and Repolarization Using 5x5x13 Electrode Array

This study presents a comprehensive examination of cardiac activation and repolarization functionalities utilizing a 5x5x13 electrode array featuring 0.5 mm diameter needles. The surface colors indicate the z-depth, with red representing epicardial (epi) and blue indicating endocardial (endo) surfaces. Activation times, measured at base and apex levels across various layers—including epi, sub-epi, midwall, and sub-endo—are detailed. Repolarization times are also documented, providing insights into the dynamic behavior of cardiac tissues during sinus activity, aiding in better understanding and diagnosis of cardiac conditions.

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Detailed Analysis of Cardiac Activation and Repolarization Using 5x5x13 Electrode Array

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  1. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Sinus Activation Activation time iso-surfaces Epi Base 80 ms 83 ms 86 ms Apex EP1 Endo 89 ms 92 ms 95 ms

  2. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Sinus Repolarisation Repolarisation time iso-surfaces Epi Base 540 ms 542 ms 544 ms Apex EP1 Endo 546 ms 548 ms 550 ms

  3. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Sub-Epi Activation Activation time iso-surfaces Epi Base 8 ms 15 ms 22 ms Apex EP1 Endo 29 ms 36 ms 43 ms

  4. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Sub-Epi Repolarisation Repolarisation time iso-surfaces Epi Base 415 ms 421 ms 427 ms Apex EP1 Endo 433 ms 439 ms 445 ms

  5. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Midwall Activation Activation time iso-surfaces Epi Base 8 ms 13 ms 18 ms Apex EP1 Endo 23 ms 28 ms 33 ms

  6. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Midwall Repolarisation Repolarisation time iso-surfaces Epi Base 440 ms 446 ms 452 ms Apex EP1 Endo 458 ms 464 ms 470 ms

  7. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Sub-Endo Activation Activation time iso-surfaces Epi Base 8 ms 14 ms 20 ms Apex EP1 Endo 26 ms 32 ms 38 ms

  8. 5x5x13 Electrode array Needles shown 0.5mm diameter Surface colours show z-depth – epi(red), endo(blue) Sub-Endo Repolarisation Repolarisation time iso-surfaces Epi Base 400 ms 406 ms 412 ms Apex EP1 Endo 419 ms 425 ms 431 ms

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