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Sachmoe



Joined: 27 Aug 2009
Posts: 2

PostPosted: Thu Aug 27, 2009 1:44 am    Post subject: Lateral T-Spine questions Reply with quote

Hello, I am a MedRad student and have some technique questions:
Which is the best mAs method for the Lateral t-spine?
1) Breathing technique i.e. lower kVp (like 65kVp) with low mA(25mA) x 2 seconds resoning: to blur out the ribs

2)suspended inspiration -to get the diaphragm down & out of the way

3) suspended inspiration-to reduce subject contrast-air out of the lungs like in the AP.

ALSO: does anyone know a tried & true method of accurately counting the thoracic vertebrae on this view?

Any info is greatly appreciated! Shocked

wvaio



Joined: 22 Sep 2007
Posts: 82

PostPosted: Thu Aug 27, 2009 9:15 pm    Post subject: Reply with quote

Personally, I always use 90 kVP at body weight, if I have to use a fixed technique. If I am doing it on the table, 90 kVp at phototime, center cell activated. All on suspended expiration. Increase kv by 10 for the spot.

Lowest vertebrae with a rib is T12. The AP is the best indicator of T12, in my opinion.Count on AP and compare count on Lat.


Wvaio

wvaio



Joined: 22 Sep 2007
Posts: 82

PostPosted: Sat Aug 29, 2009 8:36 pm    Post subject: Reply with quote

wow I completely missed the question... soorry

DISREGARD LAST POST

Sachmoe



Joined: 27 Aug 2009
Posts: 2

PostPosted: Tue Sep 01, 2009 12:23 am    Post subject: thanx 4 the reply Reply with quote

Thnx Wvaio,
I think you are correct in counting the AP (T12 w/ post ribs) & then checking the LAT for comparison. I got chance to ask a Rad this same question & it appears they too look at the AP for comparison. IE> they see a wedge # on the LAT but may not be able to really identify exactly which vertebrae it is until they see the AP.

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