The enunciation of equipment requirements has been attempted as needs appear today. Detailed and technical specifications for some of this equipment must be understood prior to major acquisitions. An awareness of current trends in clinical research can often be obtained from appropriate consultants which should forestall obsolescence. Finally, it must be reemphasized that the proper and intelligent use of equipment or diagnostic methods is essential. Likewise, the need to employ many of these techniques may become apparent only by paying close attention to the patient's clinical historical comments or as a result of skilled clinical observations.