Article Figures & Data
Figures
- Fig. 1
Mannequin with dosimeters.
- Fig. 2
Standard setup: AP image.
- Fig. 3
Standard setup: lateral image.
- Fig. 4
Reversed setup: lateral image.
- Fig. 5
Reversed setup: AP image.
Tables
Dosimeter position Radiation dose (mrad) SD SS scenario Eye 1.6 0.3 Thyroid 2.6 1.3 Right chest 4.0 0.5 Left chest 3.2 0.7 Right abdomen 6.6 0.8 Left abdomen 5.8 0.7 SSP scenario Eye 0.5 0.07 Thyroid 0.4 0.0 Right chest 0.8 0.01 Left chest 0.6 0.01 Right abdomen 1.4 0.01 Left abdomen 1.2 0.01 RS scenario Eye 0.0 0.0 Thyroid 0.4 0.8 Right chest 0.8 0.2 Left chest 0.6 0.8 Right abdomen 1.4 1.3 Left abdomen 0.8 0.7 Abbreviations: RS, reversed setup; SS, standard setup; SSP, standard setup in pulsed mode.
Comparison P value Eye SS vs SSP . 004 SS vs RS < .001 SSP vs RS . 002 Thyroid SS vs SSP . 002 SS vs RS . 009 SSP vs RS > .999 Right chest SS vs RS <.001 SS vs SSP < .001 SSP vs RS . 6 Left chest SS vs RS < .001 SS vs SSP < .001 SSP vs RS . 9 Right abdomen SS vs RS < .001 SS vs SSP < .001 SSP vs RS . 9 Left abdomen SS vs RS < .001 SS vs SSP < .001 SSP vs RS . 3 Abbreviations: RS, reversed setup; SS, standard setup; SSP, standard setup in pulsed mode.
Scenario Lateral position Posterior position Total dosage Cases/year SS 6.6 757 SS + PS 6.6 2.2 15.4 324 SS or RS 1.4 3571 SS or RS + PS 1.4 2.2 3.6 1388 Abbreviations: PS, pedicle screw insertion with 1 minute of fluoroscopy when standing near intensifier7; RS, reversed setup; SS, standard setup.
Organ Dose (mrem/y) General public 100 Whole body 5000 Eye lens 15,000 Extremities and skin 50,000
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