Used X-Cel and MinXray Units

     X-Rays have been used medically since the time of Roentgen to visualize shadows of internal anatomic structures. They are high energy photons that are often categorized as gamma rays. The main difference between the two is that most x-rays are generated by man-made machines while gamma radiation is found throughout the universe and is often referred to as cosmic radiation. Conversely, gamma radiation can be induced by compiling enriched isotopes that can in turn be used to diagnose and treat disease. Both X-rays and gamma rays can ionize genetic material that later returns to a more stable state that does not always have the exact same structure as what existed prior to the time it was ionized. This mutagenic property is what is most feared by patients and others who are exposed to diagnostic x-rays. In higher doses, x-ray radiation can be cyto-toxic and cause thermal type injuries, cellular mitotic arrest, nausea, vomiting, seizures and a host of other unpleasant and often life-threatening disease states. Ergo, it is critical that the prospective operators of these machines be well educated in the nature of x-ray radiation and the proper operation of x-ray generating devices to insure patient safety.

     Some States require Podiatrists to use lead-lined dry wall in their x-ray rooms while most of them do not take x-rays above the patients' waists. Doctors might want  to ask their State Physicist if they would allow lining the walls of their x-ray rooms to a level of 4' from the floor prior to installation to save costs. Lead-lined dry wall comes in 4' x 8' sheets that can be mounted laterally rather than vertically with the upper 3 to 4 plus feet covered with standard dry wall. If allowed, this will result in a significant cost savings to the Doctor. 

     Presently, there are many quality used x-ray machines on the market. Most Podiatrists are very familiar with the MinXray and X-Cel Portable, Mid-Base and Wall-Mount units after having been introduced to them in the Podiatry  schools, during their Residencies and at Seminars. Global Intermed commonly carries a number of these used units and offers them to the Podiatrists refurbished with a one year 100% parts & labor or replacement warranty. The units appear in near-new condition at the time of delivery.
     The modern X-Cel line began with the AP 75 which included an adjustable disc light collimator. Although this collimator projects target cross hairs onto the center of the cassette, the limits of the exposed area is not well delineated. The AP 75 base is at least 8" high and a bit cramped for most patients in terms of the area they have to stand on. It has a slot near the middle that enables the Doctors to insert 8" x 10" or 10" x 12" Cassettes to take Lateral split films or ankle views. A post is mounted at one corner of the base to provide a support for the timer and perhaps a place for patients to hold while on the base to steady themselves. These units were even provided with an insert for using Day Pak film sans intensifying screens. All three parameters (MA, kVp and elapsed time) can be adjusted on all of the Podiatry X-Cel units  that include the AP 75. Many are still in use today and can be certified in most, if not all of the States (including New Jersey).

     X-cel upgraded the AP 75 with the P 75 and later the P 75D.  These units sported a new timer with separate MA and VDC Meters. The company lowered the base to 6" high and enlarged the surface area to give the patients more room to stand on. In addition, the pole was replaced with a double posted rail that provided a place for the timer to be mounted and had a grab bar for patients to hold while having their foot/feet x-rayed. These units were manufactured with interchangeable plates to calibrate the light collimator so that it outlined the cassettes and projected a target shadow to the center of the field. After that, the P 75 and P 75D were upgraded to the P 700 although all three models remained very similar in appearance.

     X-cel improved the P 700 later to include an adjustable light collimator that is contained within the tube head (P 700 A/C) unlike the prior collimator plates that were attached to the exterior of it. The adjustable collimator has two knobs located on a side of the tube head to adjust independently the X and Y axis while projecting a cross hair target shadow onto the area of interest. Although this feature is very useful when taking x-rays with a Mobile or Wall-mount unit, it has limited value when used on a mid-base configuration because the focal distance is fixed by the arm and the slot in the base with lateral views. The picture at right can be compared with the one above immediately to see the difference between a plate collimated P 700 and one with adjustable collimation (P 700 A/C). 

     The next model introduced by X-Cel was the MB 700 A/C that initially had an analog timer like all of the previous models but an expanded surface area on the approximate 5" high base. Later, X-Cel enhanced the timer with digital circuitry adjustment controls to replace the prior analog dials. Small changes have been made to this unit over the past few years but the model has remained essentially the same in appearance since X-Cel first introduced it with the digital timer.  The company also made two variations of the MB 700 A/C. One, called the "Low Boy" (LB 700 A/C) comes with an approximate 4" high base and special hardware to take lateral split films. Although the bases are low relatively making it easier for patients to mount, the need requirement for special hardware to take lateral split films is labor intensive and not all that popular with the Technicians or Assistants who take the films.

     MinXray produced the P200 series in a Mobile, Mid-Base and Wall-Mount configuration. Currently, the company only offers the Mid-Base and Portable units. The P 200 was manufactured with a much smaller and lighter weight  tube head than the X-Cel and was fired with a solid state Timer than can be held in the palm of the hand. In fact, a number of them required service after being dropped because they were so small and light. In addition, these units included a light collimator that was calibrated with plates fixed to the exterior of the head (much like the X-Cel P 700 and earlier models)  to define the outermost boundaries of the area to be exposed. The collimator also projects a target shadow onto the center of the field. Unlike the X-Cel units, the elapsed time is the only function that can be adjusted. Restated, the MA and kVp are fixed in the used MinXray line. This might seem like a significant draw-back in terms of versatility but viewed from another perspective, Technicians and Assistants make fewer errors with these units. The portable model also requires an orthoposer like the one featured in the picture located to the left of this paragraph. In summary, MinXray units take excellent films and many are still in use today ranging as far back as 1978. MinXray sold many units in all of the different configurations (like X-Cel) so parts are readily available.

     The tube head and timer were also mounted on a mid-base configuration that is very similar to the X-Cel Mid-Base model. In particular, the tube head is mounted on an arm with a fixed focal distance. The base contains center slots to enable the operator to take lateral split film views easily from either side. MinXray also included a double posted hand rail (not shown in the picture) for patient safety. The MinXray mid-base configuration is very comparable to the one manufactured by X-Cel in my opinion.   
     The company later upgraded the P 200 tube head to include an adjustable light collimator and located the solid state timer mechanism within the head itself employing a dead man's switch to fire the unit. The base of the most recent models feature three double posted rails to insure patient safety while X-Cel continues to rely on one. We strongly recommend the Doctors attach grab bars (readily available at Sears and Builders' Supply Centers) to the wall studs surrounding the X-Cel and MinXray Mid-Base units as well as any orthoposers for patients to steady themselves. Replacement collimator bulbs are usually available at photo supply shops.    

     It makes sense for doctors who are established and can use the tax deductions to purchase new x-ray machines. However, for those who are engaged in assembling equipment for their first practice or opening a satellite office, used x-ray machines offer an opportunity to realize significant savings. The most expensive used x-rays that we sell are approximately 50% the cost of equivalent new units while many are substantially less. We refurbish and calibrate all of our x-rays prior to delivery and warrant them 100% parts & labor or replacement for 1 year from the time of delivery. Moreover, we continue to support them after that. Please feel free to call or write for details and let us know how we can help. Ask for Mark or Sue.     

Global Intermed
19876 Henry Rd.
Fairview Park, OH 44126
Tel: 440.333.0007
Fax: 440.333.4902 


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