Abstract: A transportable medical image storage medium includes a recordable optical compact disk. The compact disk has a first storage area which records a plurality of substantially losslessly compressed digital medical images and a second storage area which records a plurality of lossy compressed digital medical images corresponding to said losslessly compressed medical images. Where a case study or set of medical images is of such a length that more than one CD is required to record all of the losslessly compressed digital medical images, each CD records the entire set of lossy compressed digital medical images.

Abstract: Novel photographic dye release compounds have the structure: ##STR1## wherein R.sup.1 is an aromatic group containing 5-7 members in the ring to which Nu and E are attached; R.sup.2 and R.sup.3 are bivalent organic groups containing from 1-3 atoms in the bivalent linkage which are alkylene, oxyalkylene or thiaalkylene; Nu is a nucleophilic group which is a hydrazine, an hydroxyamino, an hydroxy, a sulfonamido, a primary amino or alkali-labile precursors for said nucleophilic groups; E is an electrophilic group which is a carbonyl or a sulfonyl; Q is a bivalent group providing a mono atom linkage between E and X.sub.2 and is amino providing a mono atom nitrogen linkage, an oxygen atom, a sulfur atom or a selenium atom, provided that Nu and E are positioned on a ring of said aromatic group to provide for intramolecular formation of a 5- to 7-membered ring between Nu and E displacing Q--X.sub.2 from E; one of X.sup.1 or Q--X.sub.

Abstract: Photographic elements, processes for forming images in photographic elements and new compounds are disclosed. Generally, the invention relates to immobile compounds which can be used to provide positive images from negative recording-developing photographic materials such as negative silver halide emulsions. The compounds contain a photographically useful group such as a dye or dye precursor and are capable of releasing said photographically useful group under alkaline conditions, and are also capable of reaction with an oxidized silver halide developing agent before substantial release of said photographically useful group occurs, to provide a reaction product having a substantially lower rate of release of said photograhically useful group.

Abstract: Photographic elements, processes for forming images in photographic elements and new compounds are disclosed. Generally, the invention relates to improved immobile compounds which can be used to provide positive images from negative recording-developing photographic materials such as negative silver halide emulsions. The compounds contain a photographically useful group such as a dye or dye precursor and are capable of releasing said photographically useful group under alkaline conditions, and are also capable of reaction with an oxidized silver halide developing agent before substantial release of said photographically useful group occurs, to provide a reaction product having a substantially lower rate of release of said photographically useful group.