The Early Years
His first job was at Rush-Presbyterian-St. Lukes Hospital, a teaching hospital. Stereotypical of first jobs, he stayed for exactly one year, from September of 1975 to September of 1976. During that short time, however, he worked on many different, cutting edge systems (thanks Lauren!).
At the time Rush was abuzz with technology projects (they may still be for all I know). Their MIS group was at the cutting edge of Hospital Information Systems development. The hospital even operated back then what today would be called an HMO.
Pacemakers, Big As Cigarette Packs
Matt developed a production application for tracking pacemaker patients. The software ran on a General Automation SPC-16, a knockoff of the IBM 1800 16-bit minicomputer; the software was written in a variant of Fortran IV (or was it V? :-)
CAT Scanners (but he's allergic to cats!?)
He got to play with a CT scanner, which at the time was one of three in the US; there weren't that many more in existance anywhere else in the world back then. They were (all!) manufactured by EMI (i.e. EMI had 100% of the fledgling market). EMI, however, fell asleep at the wheel and GE ate its lunch; to this day GE is the leader in CT scanners and EMI is back at publishing music (have they switched to CDs, yet?). His job was to help write software to use the output of the CT scanner to calculate the volume of ventricles in the brain.
The scanner's output was a digital slice of, in this case, the brain. Each voxel had a dynamic range of less than 26. That meant that the resulting image was, shall we say, coarse? . The goal was to stack up several of these slices to create a 3D representation of the brain and from that to calculate the volume of ventricles in the brain. Of course, there were a couple of obstacles that had to be worked out,
The workaround to this inconvenience was to use a real skull, a few baloons, and jell-o. The skull came from an anatomy class. The brain cavity was filled with jell-o plus some extra stuff to make it about the consistency of a live brain. In the brain, er, jell-o they quickly had to place a balloon with inflated to a known volume and shape and place it in a known location (e.g. where a real ventricle would appear in a diseased brain). Once the jell-o hardened, the skull was wrapped in towels and run through the scanner.
All I can say is that it was fun!
The system controller really was a Data General (DG) Nova, 8-bit minicomputer (auto-decrement and auto-increment memory locations, yo!). Later those were replaced with Eclipse, 16-bit minicomputers (with this computer, DG hoped to eclipse DEC, er I mean, Digital of course, neither Data General, nor DEC needed any help to eclipse themselves).
The other project I got to work on was a breast cancer diagnostic system (well, OK, a prototype). This was the brainchild of Lauren Ackerman, my boss at the time. The system ran on a PDP-11/40 clone, manufactured by a California company called Caldata. This thing was the only one of its kind at Rush (although a few more existed at the nearby University of Illinois campuses) and it ran Unix! (version five, though Matt immediately upgraded it to version six :-).
This Unix machine was the controller for a contraption that was supposed to digitize Xeromamograms (i.e. X-rays of breats, printed on paper, not film) via a (very) slow scan camera. The Xeromamograms sat upright in a wooden tub. At one end of the tub there sat a camera and at the other end there was a metal box, as big as a mamogram, attached to (the guts of) a vacuum cleaner. A mechanical grappler moved (some of the time) back and forth over the mamograms and it would come down over the right one (maybe), grab it (perhaps), and pull it out (or rip it out, as the case may be). It then moved it away from the camera to the end of the tub where the mamogram was sucked flat onto the metal grill by the vacuum cleaner running behind it. The camera would then ever-so-slowly digitize the mamogram. The A/D (Analog-to-Digital) Converter was in a little box, attached to the Caldata via a 16-bit parallel interface (DR-11C?). Software in the clone then attempted to determine if there was something that looked like a tumor present, and, if there was one, to determine from its shape whether it was malignant or benign.
In his spare time, Matt managed to program all sorts of devices: a (big, big) calculator with a dixie (sic?) tube display; a (big) HP digital calculator that could actually handle alphanumerics; an ecocardiogram machine; the IBM 360 (what model?) in the data center; and, an HP 1000, used in angiogram procedures.
After about a year at Rush, Matt heard of a Unix shop opening at the University of Illinois Medical Center. Problem was, they were not going to hire mere programmers until they hired a manager. So, he applied for the manager position. And got it (and was as surprised as anyone!).
Along with a very good friend, Ray Roth, and a couple of other folks, they ran an installation consisting of a PDP-11/50 (32K of semiconductor memory, 32K of core, and a floating point unit hot stuff), a PDP-11/34 (64K of semiconductor memory), and a PDP-8 (can you say TECO?).
This period lasted for over four years. They were a blast and an opportunity to try all kinds of things out and work on very challenging projects. We were even connected to the DARPA network then (if you don't know that the DARPA network is the direct predecessor of the Internet and all thats wonderful on this earth where have you been? hiding under a rock? and you couldn't get broadband installed in the rock?)