lungs are sections through the ribs. In general the tomato red areas are muscular tissue and the lavender areas are fatty tissue. The branched areas in the lungs are blood vessels and bronchi. The picture was made (by the Delta Scanner built by Ohio-Nuclear, Inc.) in the course of a study that was conducted by Ralph J. Alfidi, M.D. of the Cleveland Clinic Foundation." In CT, Technicare developed and sold the DeltaScan line of products. A prototype whole body scanner was installed at the Cleveland Clinic. The body scanner was installed there and was introduced first. This was followed with the head only dual slice Delta 25 which competed with the EMI Mark-I, the world's first CT scanner. This followed the body scanner, Delta 50 one of the first devices to scan the whole body. Both the Delta 25 and 50 scanned the patient in 1–2 minutes which was about twice as fast as EMI products. These first units were of the first (single detector) and second (multiple detector) generation translate and rotate systems. One of the features of this family of scanners was the elimination of the "water bag" that EMI used through the use of a beam hardening correction to produce a uniform field. Later on this led to the creation of the so-called "shaped filters" which helped to reduce dose and reduce the dynamic range of the radiation on the detectors. One of the units at the Cleveland Clinic was used to construct an image of the body that today would be called a "Scout View", essentially a digital x-ray that was produced by moving the body through the gantry with the x-ray tube stationary. This feature was introduced by Philips in 1977 under the name "Scanogram". At the Cleveland Clinic, Dr. John Haaga, who was at the Clinic at that time, contributed to this concept. This was followed by the DeltaScan 50FS, the Delta 100, the Delta 2000 series of products and the HPS 1440. The DeltaScan FS reduced scan time to 18 seconds. A later modification to both units allowed the speed of the units to be reduced to 1/4 of normal speed which was used for detailed head scanning. This also increased the scan time but gave the added benefit of increased resolution for cases that warranted it. The Delta 100 scanner, introduced in 1978, was an inexpensive dedicated head scanner priced to get