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
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.
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
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.
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.
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.