Dieter Haemmerich

Summary

Affiliation: University of Wisconsin
Country: USA

Publications

  1. ncbi request reprint Current status of liver tumor ablation devices
    Ann P O'Rourke
    Department of Surgery, University of Wisconsin, Madison, WI 53792, USA
    Expert Rev Med Devices 4:523-37. 2007
  2. ncbi request reprint In vivo electrical conductivity of hepatic tumours
    Dieter Haemmerich
    Department of Surgery, University of Wisconsin Madison, 600 Highland Avenue, WI 53792, USA
    Physiol Meas 24:251-60. 2003
  3. ncbi request reprint Hepatic radiofrequency ablation with internally cooled probes: effect of coolant temperature on lesion size
    Dieter Haemmerich
    Department of Surgery, University of Wisconsin, Madison, WI 53792, USA
    IEEE Trans Biomed Eng 50:493-500. 2003
  4. ncbi request reprint Haemostatic partial nephrectomy using bipolar radiofrequency ablation
    Gyan Pareek
    Department of Surgery Division of Urology, University of Wisconsin Medical School, 600 Highland Avenue, Madison, WI 53792, USA
    BJU Int 96:1101-4. 2005
  5. ncbi request reprint Multiple-electrode radiofrequency ablation creates confluent areas of necrosis: in vivo porcine liver results
    Paul F Laeseke
    Department of Radiology, University of Wisconsin, Box 3252, Clinical Science Center E3, 600 Highland Ave, Madison, WI 53792, USA
    Radiology 241:116-24. 2006
  6. ncbi request reprint Multiple probe radiofrequency ablation: pilot study in an animal model
    Fred T Lee
    Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Avenue, Madison, WI 53792, USA
    J Vasc Interv Radiol 14:1437-42. 2003
  7. ncbi request reprint Bipolar radiofrequency ablation of the kidney: comparison with monopolar radiofrequency ablation
    Stephen Y Nakada
    Department of Surgery, Division of Urology, University of Wisconsin Medical School, G5 339 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3236, USA
    J Endourol 17:927-33. 2003
  8. pmc Hepatic resection but not radiofrequency ablation results in tumor growth and increased growth factor expression
    Kenneth Meredith
    Department of Surgery, University of Wisconsin, 600 Highlands Avenue, Madison, WI 53792, USA
    Ann Surg 245:771-6. 2007
  9. ncbi request reprint Finite-element analysis of hepatic multiple probe radio-frequency ablation
    Dieter Haemmerich
    Department of Surgery, University of Wisconsin, Madison 53792, USA
    IEEE Trans Biomed Eng 49:836-42. 2002
  10. ncbi request reprint Letter by Saul and Haemmerich regarding article "Comparison of electrode cooling between internal and open irrigation in radiofrequency ablation lesion depth and incidence of thrombus and steam pop"
    J Philip Saul
    Circulation 113:e936; author reply e937. 2006

Collaborators

Detail Information

Publications31

  1. ncbi request reprint Current status of liver tumor ablation devices
    Ann P O'Rourke
    Department of Surgery, University of Wisconsin, Madison, WI 53792, USA
    Expert Rev Med Devices 4:523-37. 2007
    ..It focuses on probe design for radiofrequency ablation, microwave ablation and cryoablation, and compares the advantages and disadvantages of each ablation modality...
  2. ncbi request reprint In vivo electrical conductivity of hepatic tumours
    Dieter Haemmerich
    Department of Surgery, University of Wisconsin Madison, 600 Highland Avenue, WI 53792, USA
    Physiol Meas 24:251-60. 2003
    ..05). We conclude that necrosis within the tumour and the associated membrane breakdown is likely responsible for the observed change in conductivity...
  3. ncbi request reprint Hepatic radiofrequency ablation with internally cooled probes: effect of coolant temperature on lesion size
    Dieter Haemmerich
    Department of Surgery, University of Wisconsin, Madison, WI 53792, USA
    IEEE Trans Biomed Eng 50:493-500. 2003
    ..Water temperature did not have a significant effect on lesion size in the ex vivo experiments (p = 0.76), the FEM model, and the analytical solution...
  4. ncbi request reprint Haemostatic partial nephrectomy using bipolar radiofrequency ablation
    Gyan Pareek
    Department of Surgery Division of Urology, University of Wisconsin Medical School, 600 Highland Avenue, Madison, WI 53792, USA
    BJU Int 96:1101-4. 2005
    ..To determine whether an electrode array with a bipolar radiofrequency ablation (RFA) energy source can be used to perform a haemostatic partial nephrectomy by simultaneously ablating and coagulating renal tissue...
  5. ncbi request reprint Multiple-electrode radiofrequency ablation creates confluent areas of necrosis: in vivo porcine liver results
    Paul F Laeseke
    Department of Radiology, University of Wisconsin, Box 3252, Clinical Science Center E3, 600 Highland Ave, Madison, WI 53792, USA
    Radiology 241:116-24. 2006
    ..To prospectively evaluate, in vivo in pigs, an impedance-based multiple-electrode radiofrequency (RF) ablation system for creation of confluent areas of hepatic coagulation...
  6. ncbi request reprint Multiple probe radiofrequency ablation: pilot study in an animal model
    Fred T Lee
    Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Avenue, Madison, WI 53792, USA
    J Vasc Interv Radiol 14:1437-42. 2003
    ....
  7. ncbi request reprint Bipolar radiofrequency ablation of the kidney: comparison with monopolar radiofrequency ablation
    Stephen Y Nakada
    Department of Surgery, Division of Urology, University of Wisconsin Medical School, G5 339 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3236, USA
    J Endourol 17:927-33. 2003
    ..An internal ground electrode is positioned in the kidney opposite the RF electrode, resulting in ablation of all the intervening renal tissue...
  8. pmc Hepatic resection but not radiofrequency ablation results in tumor growth and increased growth factor expression
    Kenneth Meredith
    Department of Surgery, University of Wisconsin, 600 Highlands Avenue, Madison, WI 53792, USA
    Ann Surg 245:771-6. 2007
    ..The purpose of this study was to examine the effects of radiofrequency ablation (RFA) on tumor growth and growth factor expression in a murine model...
  9. ncbi request reprint Finite-element analysis of hepatic multiple probe radio-frequency ablation
    Dieter Haemmerich
    Department of Surgery, University of Wisconsin, Madison 53792, USA
    IEEE Trans Biomed Eng 49:836-42. 2002
    ..The monopolar mode showed the worst performance since the two probes in close vicinity create a disadvantageous electric field configuration. We, thus, conclude that alternating monopolar RF ablation is superior to the other two methods...
  10. ncbi request reprint Letter by Saul and Haemmerich regarding article "Comparison of electrode cooling between internal and open irrigation in radiofrequency ablation lesion depth and incidence of thrombus and steam pop"
    J Philip Saul
    Circulation 113:e936; author reply e937. 2006
  11. ncbi request reprint Multiple-electrode radiofrequency ablation: simultaneous production of separate zones of coagulation in an in vivo porcine liver model
    Paul F Laeseke
    Department of Radiology, University of Wisconsin, Madison 53792 3252, USA
    J Vasc Interv Radiol 16:1727-35. 2005
    ..The purpose of this study was to determine if each multiple-electrode ablation zone is identical to an ablation zone created with conventional single-electrode mode...
  12. ncbi request reprint Modeling bipolar phase-shifted multielectrode catheter ablation
    Supan Tungjitkusolmun
    Department of Electronics Engineering, King Mongkut s Institute of Technology Ladkrabang, Bangkok, Thailand
    IEEE Trans Biomed Eng 49:10-7. 2002
    ..5 degrees to 23.5 degrees, and in the vicinity of 26.5 degrees, respectively. The optimal phi for 3-mm spacing MEC was 30.5 degrees. We show the design of a simplified bipolar phase-shifted MEC ablation system...
  13. pmc Hepatic radiofrequency ablation at low frequencies preferentially heats tumour tissue
    Dieter Haemmerich
    Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, USA
    Int J Hyperthermia 22:563-74. 2006
    ....
  14. pmc Effect of variable heat transfer coefficient on tissue temperature next to a large vessel during radiofrequency tumor ablation
    Icaro dos Santos
    Department of Electrical Engineering, University of Brasilia, Brasilia, DF 70910 900, Brazil
    Biomed Eng Online 7:21. 2008
    ..However, the actual distribution of the temperature on the vessel wall is non-uniform and time-varying, and this feature makes the convective coefficient variable...
  15. pmc Effects of variation in perfusion rates and of perfusion models in computational models of radio frequency tumor ablation
    David J Schutt
    Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina 29425, USA
    Med Phys 35:3462-70. 2008
    ..They also examine the effect of tissue type and inter-patient variation of perfusion on ablation zone dimensions...
  16. ncbi request reprint Three-Dimensional finite-element analyses for radio-frequency hepatic tumor ablation
    Supan Tungjitkusolmun
    Department of Electronics Engineering, King Mongkut s Institute of Technology Ladkrabang, Bangkok, Thailand
    IEEE Trans Biomed Eng 49:3-9. 2002
    ..The temperature distribution in the 2-D model was highly nonuniform due to the presence of the bifurcated blood vessel. Underdosed areas might be present next to the blood vessel from which the tumor can regenerate...
  17. ncbi request reprint Large-volume radiofrequency ablation of ex vivo bovine liver with multiple cooled cluster electrodes
    Dieter Haemmerich
    Department of Biomedical Engineering, University of Wisconsin, Madison, USA
    Radiology 234:563-8. 2005
    ..Rapid switching created large round lesions by employing multiple electrodes concurrently, which substantially reduced treatment time and resulted in more effective heating between electrodes...
  18. ncbi request reprint Theoretical analysis of the heat convection coefficient in large vessels and the significance for thermal ablative therapies
    Luisa Consiglieri
    Department of Mathematics and CMAF, University of Lisboa, Av Prof Gama Pinto 2, 1649 003 Lisboa, Portugal
    Phys Med Biol 48:4125-34. 2003
    ..The results show that heating a larger portion of the vessels reduces convective heat loss, which may result in more effective ablation strategies...
  19. ncbi request reprint In vitro measurements of temperature-dependent specific heat of liver tissue
    Dieter Haemmerich
    Children s Hospital, Medical University of South Carolina, Department of Pediatrics, 165 Ashley Ave, PO Box 250915, Charleston, SC 29425, USA
    Med Eng Phys 28:194-7. 2006
    ..5 degrees C. Water loss from the samples was significant above 70 degrees C, with approximately 20% of reduction in sample mass at 90 degrees C...
  20. pmc Sequential activation of a segmented ground pad reduces skin heating during radiofrequency tumor ablation: optimization via computational models
    David J Schutt
    Division of Pediatric Cardiology, Medical University of South Carolina, Charleston, SC 29425, USA
    IEEE Trans Biomed Eng 55:1881-9. 2008
    ..Sequential activation of a segmented ground pad resulted in lower tissue temperatures. This method may reduce the incidence of ground pad burns and enable the use of higher power generators during RF tumor ablation...
  21. doi request reprint Contrasting effects of convective flow on catheter ablation lesion size: cryo versus radiofrequency energy
    Thomas A Pilcher
    Division of Pediatric Cardiology, Medical University of South Carolina, Charleston, South Carolina 29425, USA
    Pacing Clin Electrophysiol 31:300-7. 2008
    ..We compared the effects of convective flow on large-tip cryo and radiofrequency (RF) lesions dimensions...
  22. pmc Sequential activation of multiple grounding pads reduces skin heating during radiofrequency tumor ablation
    Dieter Haemmerich
    Medical University of South Carolina, Department of Pediatrics, Charleston, SC 29425, USA
    Int J Hyperthermia 23:555-66. 2007
    ..We investigated a method were groups of ground pads are sequentially activated to reduce skin heating...
  23. ncbi request reprint Convective cooling affects cardiac catheter cryoablation and radiofrequency ablation in opposite directions
    Dieter Haemmerich
    Medical University of South Carolina, Division of Pediatric Cardiology, Charleston, SC 29414, USA
    Conf Proc IEEE Eng Med Biol Soc 2007:1499-502. 2007
    ..01). While RF ablation creates larger lesions at high flow rates (3 L/min), cryoablation creates larger lesions at low flow rates (0-1 L/min, p<0.05)...
  24. ncbi request reprint In-vivo measurement of swine myocardial resistivity
    Jang Zern Tsai
    Department of Electrical and Computer Engineering, University of Wisconsin, Madison 53706 USA
    IEEE Trans Biomed Eng 49:472-83. 2002
    ..There was no significant difference in the myocardial resistivity measured at different sites...
  25. ncbi request reprint Error analysis of tissue resistivity measurement
    Jang Zern Tsai
    Department of Electrical and Computer Engineering, University of Wisconsin, MadisonI 53706 USA
    IEEE Trans Biomed Eng 49:484-94. 2002
    ..61% error. We combined the above errors to yield an overall standard deviation error of the measured tissue resistivity of +/- 1.96%...
  26. pmc Technologies for guidance of radiofrequency ablation in the multimodality interventional suite of the future
    Bradford J Wood
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
    J Vasc Interv Radiol 18:9-24. 2007
    ..Much of this new technology is in use or will be available to the interventional radiologist in the near future, and this brief introduction will hopefully encourage research in this emerging area...
  27. ncbi request reprint Convective cooling effect on cooled-tip catheter compared to large-tip catheter radiofrequency ablation
    Thomas A Pilcher
    Division of Pediatric Cardiology, Medical University of South Carolina, Charleston, South Carolina 29425, USA
    Pacing Clin Electrophysiol 29:1368-74. 2006
    ..The purpose of this study was to compare the effect of convective cooling at physiologic flow rates on RF lesion size using both actively cooled and large-tip catheters...
  28. ncbi request reprint Mechanical compliance of the endocardium
    Young Bin Choy
    Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801, USA
    J Biomech 35:1671-6. 2002
    ..The force increased by a factor of 5 for the mitral valve annulus and 8 for the left free wall from 15 min to 18 h. We derived coefficients of a second-order polynomial equation relating the force data to insertion depth with R(2)>0.99...
  29. ncbi request reprint Lesion size estimator of cardiac radiofrequency ablation at different common locations with different tip temperatures
    Yu Chi Lai
    Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706, USA
    IEEE Trans Biomed Eng 51:1859-64. 2004
    ..Based on the database, the software estimated lesion dimensions during different applied durations. This software could be used as a first-step predictor to help the electrophysiologist choose treatment parameters...
  30. ncbi request reprint Measurement of temperature-dependent specific heat of biological tissues
    Dieter Haemmerich
    Division of Pediatric Cardiology, Medical University of South Carolina, Charleston, SC 29425, USA
    Physiol Meas 26:59-67. 2005
    ..We confirm method accuracy with a 2.5% agar-0.4% saline physical model and obtain specific heat of 4121+/-89 J (kg K)(-1), with an average error of 3.1%...
  31. pmc Automatic control of finite element models for temperature-controlled radiofrequency ablation
    Dieter Haemmerich
    Division of Pediatric Cardiology, Medical University of South Carolina, 165 Ashley Ave, Charleston, SC 29425, USA
    Biomed Eng Online 4:42. 2005
    ..Commercial FEM packages don't support automating temperature control. Most researchers manually control the applied power by trial and error to keep the tip temperature of the electrodes constant...