DIGITAL X RAYS WITH HIGH FREQUENCY

It is common knowledge that High Frequency Generators are a newer and a far superior type of generator, but why? Additionally, beyond the technical reasons why these generators are different, what are the practical differences that an owner of these two types of generators would experience? Let’s quickly explain the differences between High Frequency X-Ray Generators and Standard Frequency (aka “Single Phase”) X-Ray Generators.

Quick Facts Breakdown-

Empirical evidence has proven that High Frequency Generators;
1.) Produce Superior Image Quality
2.) Have Superior Patient Penetrating Properties
3.) Rapidly Increase X-Ray Room Patient Through-put
4.) Produce Less Re-Takes and Double Exposures

PRACTICAL IMPLICATIONS-

Here is a comparison of techniques for the same exam, taken at the same film speed for High Frequency vs. Standard Frequency;
AP Lumbar exam on a 32CM Patient, 200 Film Speed High Frequency System = kVP 84, mAs 100
AP Lumbar exam on a 32CM Patient, 200 Film Speed Standard Frequency System= kVP 100, mAs 250

With High Frequency Generators the X-Ray room becomes much easier to use with less mathematics involved and high patient through-put, allowing for a faster return on your investment. This is mostly due to the fact that High Frequency Generators utilize Digital Operator Consoles as opposed to the physical dials that are used with Standard Frequency generators to set the proper technique for each exam.

With a High Frequency system, the operator simply chooses the exam type (ie AP lumbar) from a list of options, inputs the patients CM thickness and presses expose. With a Standard Frequency system the operator will have to set the proper kVp, mA, and Time setting for each exam. If the operator is not very well versed with X-Ray physics and image quality diagnosis, this results in many re-take exams and a much slower through-put of the patients in the X-Ray room..

Dr.Gurneet Singh Chhina

M.D. Radiodiagnosis
( PGI Consultant Radiologist )

+91-98155-42133
drgurneet@hotmail.com