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"Floppy" into "flippy" —or two for the price of one

Neuroradiology Department, Walton Hospital, Liverpool and Associated Department of Neurological Sciences, University of Liverpool

This excerpt was created in the absence of an abstract.

The floppy discs supplied for rapid-access storage of data obtained from the EMI brain scanner hold data from eight slices, and cost approximately £4. As Cromwell et al. (1977) have shown, the cost per slice can be halved by the simple manoeuvre of punching two holes in the plastic cover of the disc. The floppy disc is thus transformed into a flippy disc which will hold data from 16 slices, eight per side, with no obvious quality deterioration or print-through. Apart from reduction in capital cost, other obvious benefits are more compact storage, and diminished disc handling for a given work load. It seems worthwhile to give details of methods of making the holes, and of suitable equipment which is readily available at low cost, as this aspect was not fully covered in the original communication (Fig. 1).

Received for publication March 1, 1978.