Article Figures & Data
Figures
- Fig 1.
Screenshots from the PCXMC software showing the lower scanning borders used for effective dose calculations. Note the upper scanning border–assumed vertex for all SPR calculations.
- Fig 2.
SPR of a neonate with a 300-mm craniocaudal extension.
- Fig 3.
SPR for planning of head CT and neck CT angiography, performed with 80 kV and 10 mA. 1 indicates the jugular vein line on the right; 2, the endotracheal ventilation catheter; 3, the nasogastric line curled up in the mouth (confirmed by CT). All are very visible. The photon-starving effect over the shoulder and chest in the lateral projection is more pronounced than at 120 kV.
Tables
Projection Settings (kV/mA) Adult 10-Year-Old Child Neonate Lower Scanning Border Below Clavicle Lower Thyroid Limit Upper Thyroid Limit Below Clavicle Lower Thyroid Limit Upper Thyroid Limit Below Diaphragm Lower Thyroid Limit Upper Thyroid Limit AP 120/10 27.7 23 9 23.1 19.9 7 97.2 30.7 16.3 80/10 8.3 6.8 2 7.3 6.3 1.9 32.3 10.1 5.2 PA 120/10 8.9 7.9 3.7 8.6 6.7 4.8 65.9 17 11.9 80/10 2.4 2.0 1.6 2.3 1.8 1.3 22.9 6.2 4.4 Lateral 120/10 14.1 12.6 6.9 17.2 15.8 10.2 72.1 25.4 15.9 80/10 4.1 3.6 1.9 4.2 3.8 2.1 24.9 8.3 5.2 Note:—AP indicates anteroposterior; PA, posteroanterior.
Anteroposterior Posteroanterior Lateral Adult 107.8 27.5 22.0 10-Year-old 11.6 5.0 5.8 Neonate 4.6 – 3.3 Note:— –indicates not performed in clinical practice.
In this issue
Jump to section
Related Articles
Cited By...
- No citing articles found.