Use of positron emission tomography for response assessment of lymphoma: Consensus of the imaging subcommittee of international harmonization project in lymphoma

Malik E. Juweid, Sigrid Stroobants, Otto S. Hoekstra, Felix M. Mottaghy, Markus Dietlein, Ali Guermazi, Gregory A. Wiseman, Lale Kostakoglu, Klemens Scheidhauer, Andreas Buck, Ralph Naumann, Karoline Spaepen, Rodney J. Hicks, Wolfgang A. Weber, Sven N. Reske, Markus Schwaiger, Lawrence H. Schwartz, Josee M. Zijlstra, Barry A. Siegel, Bruce D. Cheson

Research output: Contribution to journalArticle

1063 Scopus citations

Abstract

Purpose: To develop guidelines for performing and interpreting positron emission tomography (PET) imaging for treatment assessment in patients with lymphoma both in clinical practice and in clinical trials. Methods: An International Harmonization Project (IHP) was convened to discuss standardization of clinical trial parameters in lymphoma. An imaging subcommittee developed consensus recommendations based on published PET literature and the collective expertise of its members in the use of PET in lymphoma. Only recommendations subsequently endorsed by all IHP subcommittees were adopted. Recommendations: PET after completion of therapy should be performed at least 3 weeks, and preferably at 6 to 8 weeks, after chemotherapy or chemoimmunotherapy, and 8 to 12 weeks after radiation or chemoradiotherapy. Visual assessment alone is adequate for interpreting PET findings as positive or negative when assessing response after completion of therapy. Mediastinal blood pool activity is recommended as the reference background activity to define PET positivity for a residual mass ≥ 2 cm in greatest transverse diameter, regardless of its location. A smaller residual mass or a normal sized lymph node (ie, ≤ 1 x 1 cm in diameter) should be considered positive if its activity is above that of the surrounding background. Specific criteria for defining PET positivity in the liver, spleen, lung, and bone marrow are also proposed. Use of attenuation-corrected PET is strongly encouraged. Use of PET for treatment monitoring during a course of therapy should only be done in a clinical trial or as part of a prospective registry.

Original languageEnglish
Pages (from-to)571-578
Number of pages8
JournalJournal of Clinical Oncology
Volume25
Issue number5
DOIs
StatePublished - Feb 10 2007
Externally publishedYes

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    Juweid, M. E., Stroobants, S., Hoekstra, O. S., Mottaghy, F. M., Dietlein, M., Guermazi, A., Wiseman, G. A., Kostakoglu, L., Scheidhauer, K., Buck, A., Naumann, R., Spaepen, K., Hicks, R. J., Weber, W. A., Reske, S. N., Schwaiger, M., Schwartz, L. H., Zijlstra, J. M., Siegel, B. A., & Cheson, B. D. (2007). Use of positron emission tomography for response assessment of lymphoma: Consensus of the imaging subcommittee of international harmonization project in lymphoma. Journal of Clinical Oncology, 25(5), 571-578. https://doi.org/10.1200/JCO.2006.08.2305