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Essential Techniques for Sternum and Abdomen Radiography

This guide outlines critical positioning techniques and exposure settings for sternum and abdomen radiography. For the sternum, use a 10x12 cassette and align the patient upright, with an oblique position to visualize the sternum clearly. Utilize breathing techniques and specific KV and mAs settings for optimal imaging. For abdominal imaging, both AP Flat and AP Erect positions are detailed, emphasizing proper patient alignment and exposure parameters. Clear instructions for positioning, centering, and ensuring proper collimation maximize diagnostic output while minimizing obscuration of vital structures.

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Essential Techniques for Sternum and Abdomen Radiography

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  1. The Sternum

  2. Things to know • Cassette 10 x 12 lengthwise • Shield • Marker • Measures 29 • Breathing technique for RAO • Technique 65 KV @ 45 mAs • Page 344-345

  3. Positioning • Patient erect • Arms at side • Position patient oblique about 15-20 degrees to the right side. • Align sternum to midline of IR • Place IR or light about 1 ½ inches above jugular notch.

  4. CR perpendicular and left to midline of spine And midway of jugular notch and xiphoid process SID 40

  5. Collimation • To sternum • About 5 inches wide

  6. Seen on Radiograph • Sternum Visualized and superimposed on heart shadow. • No superimposition of vertebrae

  7. Lateral • Cassette 10 x 12 lengthwise • Shield • Marker • Measures 29 • Technique 70 KV @ 80 mAs • Hold breath on inspiration

  8. Positioning • Patient erect with side against IR • Shoulder and arms drawn back • Sternum align with midline of IR • Place light or IR about 1 ½ inches above jugular notch. • True lateral with no rotation

  9. CR perpendicular to mid Sternum SID 60-72

  10. Seen on Radiograph • Entire sternum • No imposition of arms or shoulders • Minimal overlap of soft tissue • No imposition of ribs

  11. The Abdomen

  12. Things to know • AP Flat and AP Erect • Cassette size 14 x 17 lengthwise • Marker • No shielding • Measures 17 • Expiration • Page 109, 112

  13. AP Erect • Technique • 80@30

  14. Positioning for erect • Patient is erect with back against bucky • Center midline of body to midline of bucky • Arms at sides • IR about the level of Armpits • Or center of cassette is 2 inches above crest

  15. Collimate to skin borders if small patient SID 40

  16. Seen on Radio graph • Both diaphragms • Air-filled stomach • As much of lower abdomen as possible. • No rotation

  17. Flat Abdomen • 14 x 17 Lengthwise • Marker • Measures 17 • Technique 70-80 KV @ 15 mAs • Expiration

  18. Positioning • Patient supine • Midline align with midline of table • Arms at sides • Legs extended

  19. CR perpendicular to crest SID 40 No collimation unless small

  20. Seen on Radiograph • Kidneys • Bladders • Air filled stomach • Symphysis pubis • No rotation

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