Whether you're a radiography student, a healthcare professional, or simply interested in medical imaging, this content will provide you with a comprehensive understanding of soft tissue radiography and its role in modern healthcare
• Soft-tissue radiography is the term generally
used for radiography of muscle, skin, and
subcutaneous and glandular tissues without
the use of contrast media.
, Exposure technique
• Several different exposure techniques may be
used.
• They may be divided broadly into two
categories: those employing a
1. Normal kVp
2. Non-standard kVp.
, Normal kVp
This category may be divided into three
subcategories:
• Use of a normal technique for the part being
examined when air shadows or fat pads may
delineate abnormalities in adjacent soft tissue
structures, e.g.: – effusion in a synovial cavity
causing a filling defect in a fat pad adjacent to
a joint; – enlarged adenoids causing a filling
defect in the air contained in the nasopharynx.
,• Use of two or more films or film/screen
combinations to demonstrate both bony detail and
soft tissue with one exposure, e.g.: – facial bones,
nasal bones and soft tissues of the face; –
calcification of tendons and bony detail of the
shoulder joint.
• Use of a wedge filter, where the thicker part of the
wedge attenuates the beam over the soft tissues,
e.g.: – cephalography to demonstrate bony detail of
the skull and facial bones along with the soft-tissue
outline of the face on one film; – to see the soft
tissue of the toes when exposing the whole foot.
, Non standard kVp
• This category of exposure technique may also
be divided into three subcategories:
1. subnormal kVp,
2. low kVp and
3. high kVp.
, Subnormal kVp
• This term is used when the kVp employed in less than 45
kVp, which is the lowest useful kVp available on many X-
ray units.
• Modified or special equipment is required that has an X-
ray tube with reduced added and inherent filtration
along with a small focal spot size.
• The use of such kVp increases differential attenuation of
adjacent soft tissues and thus increases subject contrast.
• An example of the use of this technique is found in
mammography.
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