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Cited by 11Ultrasound and Hyperthermia ApplicationsInfrared Thermography in MedicineHepatocellular Carcinoma Treatment and Prognosis

The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.

Specific absorption rate and tissue temperature in local hyperthermia

Griffiths, H., Ahmed, A., Smith, C.W., Moore, J.L., Kerby, I.J., Davies, R.M.E.·1986·International Journal of Radiation Oncology*Biology*Physics
DOI 10.1016/0360-3016(86)90137-9
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Abstract

Specific absorption rate (SAR) and tissue temperature were measured for a total of 83 treatments in 33 patients who received local hyperthermia treatment for cancer. The patients were grouped into three categories according to tumor size. Hyperthermia was induced by 13.56 MHz electromagnetic energy applied using capacitive coupling. A method is described for evaluating SAR from the tissue temperature traces at any time in the treatment when a step change is made in applied power. The method is possible only if the temperature traces are free from interference and the total power delivered to the patient is monitored. Mean values of SAR ranged from 4.6 to 89 W kg-1 depending on the treatment site. Satisfactory heating was achieved for superficial tumors, with temperatures greater than 42 degrees C being recorded in 69% of treatments. For axillary nodes only 4% of treatments exceeded 42 degrees C. For cervix tumors an idealized tumor model was used to estimate tumor temperature from the temperature and SAR measured in the adjacent normal tissue. From the model it appears necessary either to raise the systemic temperature to 40 degrees C or to increase the SAR by at least a factor of 4 to obtain a temperature of 42 degrees C in a typical tumor. Measurements of SAR and temperature are essential for feedback control of computer models which, in principle, could provide a complete distribution of temperature during a hyperthermia treatment. Furthermore, measured SAR provides a direct comparison of the power deposition from different treatment machines in a clinical environment. The data presented form a basis for comparison with the clinical use of other heating systems.

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Crossref · 10.1016/0360-3016(86)90137-9

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Research works printed but not linked: 2

  1. Kerby, 1984, RF hyperthermia in the treatment of carcinoma cervix uteri, Vol. 1, 757
  2. Roemer, 1984, Thermal modeling, Vol. 11, 293

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Metadata

Authors
Griffiths, H., Ahmed, A., Smith, C. W., Moore, J. L., Kerby, I. J., & Davies, R. M. E.
Affiliations
Velindre Cancer Centre (GB)
ORCID
Venue
International Journal of Radiation Oncology*Biology*Physics
Publisher
Elsevier BV
Published
1986-11
Volume
12
Issue
11
Pages
1997-2002
ISSN
0360-3016 (ISSN-L)
DOI
10.1016/0360-3016(86)90137-9
OpenAlex
W2048758955
Cited by
11
References
16
Citations by year
2024: 2 · 2022: 1 · 2021: 1 · 2020: 1
FWCI
1.51
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • International Journal of Radiation Oncology*Biology*Physics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Ultrasound and Hyperthermia Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Infrared Thermography in Medicine
  • Health Sciences › Medicine › Hepatology › Hepatocellular Carcinoma Treatment and Prognosis
Keywords
specific absorption rate, tissue temperature, local hyperthermia, cancer hyperthermia, capacitive coupling, tumor size, axillary lymph nodes, cervical cancer
MeSH terms
Absorption, Body Temperature, Humans, Hyperthermia, Induced, Neoplasms

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