A very pleased neurologist at Caltech told Steve about it:
http://homepage.mac.com/rossetantoine/osirix/Index2.html
 
which begins:
>OsiriX is an image processing software dedicated to DICOM images
>(".dcm" / ".DCM" extension) produced by medical equipment (MRI, CT,
>PET, PET-CT, ...) and confocal microscopy (LSM and BioRAD-PIC format).
>It can also read many other file formats...
 
[Moderator's note: Note this is Macintosh software.
 
People are even viewing and storing the images on their iPods :-)
http://www.eweek.com/article2/0,1759,1748425,00.asp      BIG]
[Posted in FML issue 4751]