On the plus side, the El Segundo, California, practice has increased revenues tenfold over the past five years through acquisitions and is in a strong cash position, the ratings service noted.
Delays in scientific progress may be "incredibly difficult, if not impossible" to overcome, radiology experts wrote Friday in Radiology: Imaging Cancer.
One-third of practice leaders said they have been forced to freeze hiring and shed employee numbers among CT staffers to counter decreasing patient visits.