Adjusting Technical Factors for Patient’s Pathological Conditions!
Additive and Destructive Patient Conditions:
Additive and destructive patient conditions that result in change to the normal bony structures, soft tissues, or air or fluid content of the patient require technical adjustments to compensate for the exposure change that the condition causes over the routinely used.
Additive diseases cause tissues to increase in mass density or thickness, resulting in them being more radiopaque,
whereas,
Destructive diseases cause tissues to break down, resulting in them being more radiolucent.
Here i have listed some of the
common additive and destructive diseases that require technique adjustments and provides a starting point for adjusting technical factors for the condition.
Exposure factors modifications in Additive Diseases.
Amounts to increase:
1.Acromegaly = 8%-10% kV should be increased
2.Ascites = 50% mAs should be increased
3.Cardiomegaly = 50% mAs should be increased
4.Fibrous carcinomas =50% mAs should be increased
5.Hydrocephalus = 50%-75% mAs Should be increased
6.Hydropneumothorax =50% Should be increased
7.Osteoarthritis= 50% mAs should be increased
8.Osteochondroma= 8% kV should be increased
9.Osteopetrosis= 8% kV should be increased
10.Paget’s disease = 8% kV should be increased
11.Pleural effusion = 35% mAs should be increased
- Pneumonia = 50% mAs should be increased
13.Pulmonary edema= 50% mAs should be increased
14.Pulmonary tuberculosis= 50% mAs be increased.
Exposure factors modifications in
Destructive diseases:
Amounts to decrease:
1.Aseptic necrosis = 8% kV should be decreased.
2.Blastomycosis = 8% kV should be decreased.
3.Bowel obstruction = 8% kV should be decreased.
4.Emphysema = 8% kV should be decreased.
5.Ewing’s tumor = 8% kV should be decreased.
6.Exostosis = 8% kV should be decreased.
7.Gout = 8% kV should be decreased.
8.Hodgkin’s disease = 8% kV should be decreased.
9.Hyperparathyroidism = 8% kV should be decreased.
10.Osteolytic cancer = 8% kV should be decreased.
11.Osteomalacia = 8% kV should be decreased.
12.Osteoporosis = 8% kV should be decreased.
13.Pneumothorax = 8% kV should be decreased.
14.Rheumatoid arthritis = 8% kV should be decreased.