Societies:

American Association for Cancer Research (AACR)
http://www.aacr.org/

ASHO: Asian Society for Hyperthermic Oncology
http://www.jsho.jp/index.php?option=com_content&view=category&layout=blog&id=35&Itemid=32

AAPM: American Association of Physicists in Medicine
http://www.appm.org

American College of Radiation Oncology (ACRO)
http://www.acro.org/

American Cancer Society (ACS)
http://www.cancer.org/

American Society of Clinical Oncology (ASCO)
http://www.asco.org/

ASME: American Society of Mechanical Engineers, Bioengineering Division
http://divisions.asme.org/BED/

American Society for Therapeutic Radiology and Oncology (ASTRO)
http://www.astro.org/

BEMS: Bioelectromagnetics Society
http://www.bems.org

IEEE-BMES: BioMedical Engineering Society
http://www.bmes.org

European Society for Hyperthermic Oncology
http://www.esho.info/

FUSF: Focused Ultrasound Surgery Foundation
http://www.fusfoundation.org

IEEE EMBS: Engineering in Medicine and Biology Society
http://www.embs.org

ISTU: International Society for Therapeutic Ultrasound
http://www.istu.org

Radiation Research Society

http://www.radres.org/ECOMradres/timssnet/common/tnt_frontpage.cfm

Radiological Society of North America (RSNA)
http://www.rsna.org/
 
SPIE: The International Society for Optical Engineering:
http://spie.org/

 

Companies:

Ablatherm:
http://www.hifu.ca/patient/about_ablatherm.php

Acculis:
http://www.acculis.com

Angiodynamics: 
http://www.angiodynamics.com/

BSD Medical:
http://www.bsdmc.com

Celsion Corporation: 
http://www.celsion.com/

Covidien:
http://www.covidien.com

Endocare:
http://www.healthtronics.com/

Galil Medical:
http://www.galilmedical.com/

Image Guided Therapy:
http://www.imageguidedtherapy.com/

Insightec:
http://www.insightec.com/

NeuWave:
http://www.neuwavemedical.com

Philips Healthcare HIFU:
http://www.healthcare.philips.com/main/products/mri/systems/sonalleve/

Profound Medical:
http://www.profoundmedical.com/index.html

Sennewald:
http://sennewald.de/

SPEAG:
http://www.speag.com/

Visualase:
http://www.visualaseinc.com/

Zurich Med Tech
http://www.zurichmedtech.com

Academic Thermal Medicine Research Labs:

Duke Hyperthermia:
http://radonc.duke.edu/modules/radonchyper/index.php?id=1

Harvard Focused Ultrasound:
http://www.harvard.focused-ultrasound.org/

Illinois Bioacoustics:
http://www.brl.uiuc.edu/

INSERM Therapeutic Ultrasound:
http://labtau.univ-lyon1.fr/

IT'IS Foundation
http://www.itis.ethz.ch

Minnesota Bioheat and Mass Transfer Lab:
http://www.me.umn.edu/labs/bhmt/index.shtml

MUSC Thermal Ablation Lab:
http://www.musc.edu/ablation/

NIH Interventional Radiology:
http://www.cc.nih.gov/drd/irlab/index.html

Stanford RSL:
http://rsl.stanford.edu/kim/index.html

Sunnybrook Focused Ultrasound:
http://sunnybrook.ca/research/content/?page=sri_groups_fus_home

UTHSC Thermal Therapy:
http://www.uth.tmc.edu/thermaltherapy/index.html

Univ. Wisconsin Ablation:
http://bracegroup.engr.wisc.edu/

Informational and Educational Sources:

National Cancer Institute (NCI): 
http://www.cancer.gov/

National Institutes for Health:
http://www.nih.gov/