SOFT TISSUE RADIOGRAPHY
WADP DARSHANA RADIOLOGIC TECHNOLOGIST-SRI LANKA
What are soft tissues?
Tissues other than bones
Why we need special techniques to demonstrate soft tissues?
• Differential attenuation is less in soft tissues.• So the subject contrast is less in soft tissues.
Difference densities according to differential attenuations
How to change the contrast of radiographic image?
• By Changing Kvp• By adding filters
Use of normal Kvp
• Air and Fat are low dense and give blackish appearance than other tissues if we use normal kvp.
Enalarged adenoid is seen in nomal neck exposures
??????????????
Knee effusions seen in normal Kvp
lipohaemoathrosis
Soft tissue swelling
Normal & abnormal kagers fat pad
Sub normal kvp in mammo
Skull normal exposure vs soft tissue exposure……….use profile projections(tangenital)
Low kv
High kv
Need of high kv in Ba enema
Use of filters filters
Digital technology
Conventional vs digital mammo
• To demonstrate soft tissues successfully; special attention must be given to;
-Radiographic contrast
-Image sharpness
-Avoidance of artifacts
• ANY QUESTIONS or DISCUSSIONS??