Licenciatura En Informatica

The word gamut is defined as the whole range of anything.
As used in this book, it indicates a complete list of
causes of a particular roentgen finding or pattern.
Most radiologists use the “Gamut approach” without
calling it that. You see an epiphyseal lesion of bone and
immediately search your memory bank for causes. You recall
perhaps six causes, then eliminate two because of rarity
orincompatible roentgen pattern. Then with the clinical
information at your elbow in the form of an x-ray
requisition or a clinician, you weed out two more that
don’t fit the clinical setting, leaving you with perhaps one
or two likely diagnoses.
This process is the basis of the triangulation approach
to radiologic diagnosis espoused by the originator of the
gamut concept, Colonel WilliamLeRoy Thompson. He
taught that roentgen diagnosis begins with accurately interpreting
all the nuances and data inherent in the radiograph,
then using that information to derive a particular
pattern. The second side of the triangle involves reference
to a well constructed list of differential diagnoses, which
includes not only the common causes, responsible for over
80 percent of the entities,but also the uncommon causes,
which are frequently overlooked. The triangle is then
completed by reference to the pertinent clinical and laboratory
data, age, sex, and other important information concerning
the patient.
The purpose of this book is to provide you with complete
and accurate lists of differential diagnoses. It is an
unobtrusive consultant, quickly available whenever youinterpret films or prepare a presentation. In each patient,
the possibilities can be narrowed down to those that fit the
roentgen signs and the clinical and laboratory findings. Of
course, all the pertinent data on the film must be analyzed
to find the appropriate roentgen sign or pattern. Study
well—to identify a pattern incorrectly will land you in the
wrong gamut, which could lead to animproper diagnosis.
The publication of the fourth edition of Gamuts in Radiology,
the second prepared without the direct input of
Gamut 0-00
xvii
Preface to the Fourth Edition
Reference to a well-constructed list
of differential diagnosis (Gamut) for
that pattern
Accurate analysis of clues on the
radiograph to arrive at the proper
pattern
Correlation of radiographic findings
and Gamut withpatients' clinical
and lab findings to arrive at the
most likely diagnosis
The Triangulation Approach to
Radiographic Diagnosis

my widely loved and esteemed colleague, the late Ben
Felson, marks many important changes in the book. Most
conspicuously, we have added gamuts for over 250 additional
patterns, especially in the areas of Ultrasound,
Magnetic Resonance Body Imaging, and Headand Neck
Imaging, and have updated more than 80 percent of the
previously existing gamuts. The end result is a text with
approximately 33 percent new material from the third edition,
which in turn doubled the information available in
the first two editions. Indeed, scarcely a single gamut remains
unchanged from the first edition, while the book has
tripled in size, reflecting the dramaticadvances that have
occurred in Radiology over the past three decades, especially
in the areas of Ultrasound, CT, and MRI. The three
prior editions of the book found wide acceptance—over
50 thousand copies are in circulation throughout North
America and Europe, with tens of thousands more present
in China, Japan, and most other countries of the world in
at least three different languages.However, the information
and data banks previously available have been greatly
expanded by virtue of this publication.
While the individual gamuts are extensively referenced
up to the year 2002, you will note that the majority of current
references refer to textbooks rather than journal articles.
This is because today’s general and subspecialty textbooks
are much more likely to refer to the...