Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 243)

Change: Plain films Estimated fetal dose per examination (rad) No of exams needed (5-rad dose)Skull Dental Cervical spine Upper or lower extremity Chest (two views) Mammogram Abdominal (multiple views) Thoracic spine Lumbosacral spine Intravenous pyelogram Pelvis Hip (single view) CT scans (slice thickness: 10 mm) Head (10 slices) Chest   View changes from previous version. (Word count: 243)

Change:  Estimated fetal dose per examination (rad) No of exams needed (5-rad dose)Skull Dental Cervical spine Upper or lower extremity Chest (two views) Mammogram Abdominal (multiple views) Thoracic spine Lumbosacral spine Intravenous pyelogram Pelvis Hip (single view) CT scans (slice thickness: 10 mm) Head (10 slices) Chest (10 slices) Abdomen   View changes from previous version. (Word count: 317)

Change:  Perfusion portion: technetium6 0.175 28 Ventilation portion: xenon (133Xe)6 0.040 125 Iodine (131I), at fetal thyroid tissue6 590.000 ‡(total) Environmental sources (for comparison) Environmental background radiation (cumulative dose over nine months)8 0.100 N/A Safety of Radiographic Imaging during Pregnancy, American Family Physician, Vol 59/No.7 (April 1, 1999)   View changes from previous version. (Word count: 331)

Change:  Skull4 0.004 1,250 Dental5 0.0001 50,000 Cervical spine4 0.002 2,500 Upper or lower extremity4 0.001 5,000 Chest (two views)6 0.00007 71,429 Mammogram6 0.020 250 Abdominal (multiple views)6 0.245 20 Thoracic spine4 0.009 555 Lumbosacral spine6 0.359 13 Intravenous pyelogram6 1.398 3 Pelvis4 0.040 125 Hip (single view)6 0.213 23   View changes from previous version. (Word count: 243)

Change: Renamed from Safety of Radiographic Imaging & Pregnancy by AndyC Jul 1 2006, 8:21 AM EDT for: Rename

Change: Created by AndyC Jul 1 2006, 8:17 AM EDT for: no reason given