Björn Nordenström died in Stockholm on December 31. Nordenström, a professor emeritus of diagnostic radiology at the Karolinska Institute, had been ill for some time. He is perhaps best known for developing new biopsy techniques for diagnosing lung cancer.
Nordenström also used electricity to treat cancer. The latter research was quite controversial, at least partially because he worked alone and published few papers. in 1983, he summarized his ideas in Biologically Closed Electric Circuits and later helped establish the International Association of Biologically Closed Electric Circuits, The association held its last meeting in Sao Paulo, Brazil, last May.