your lower ext alot of ads i watched few of them like most of it. i dunno youre stil having pay for it but i still i watched it. i hope you still make videos like this. thank you
@thevoiceharmonicАй бұрын
I begin with accurate alignment, then collimation and positioning of the cassette with grid. With a standard focused 35x43 grid you will need to tilt it a few degrees to avoid grid cut off as you will be directing the beam to only one side of it. Once everything is in place, the patients leg is raised for only 20 seconds where collimation to within the skin edge is produced. Often a wedge filter is also required. To understand this use of the grid, watch my video kzbin.info/www/bejne/o4uzdZKdgdhoetksi=aUCYhAQmro8EqNRA
@amuchejoshua2816 ай бұрын
Very well explained
@ibrahimojuolape38296 ай бұрын
Thank you for the video
@thevoiceharmonic7 ай бұрын
At 15.26. Central ray skimming the sesamoid bones. Hopefully you know that there is nothing special about the central ray. It is the position of the tube focus that causes the geometry of the projection. Tube angulation is one thing and the geometry of the projection is often another. 75% of qualified radiographers fail the geometry test. kzbin.info/www/bejne/h4O3aKqmhL-godEsi=gS8gxg7r0csXl8wZ The geometry can be exploited to perfect projections like 28.36 lateral standing foot. Central ray to the sole of the foot, then angle up and collimate to the sole of the foot. A perfect representation of foot and the surface it stands on which can't be achieved using the technique shown. I retired after 40 years working for 40 practices. My secret to success was not using any centring points, only accurate collimation. This fixed the predicted outcome with the actual radiograph which does not happen in the conventional approach. I mastered radiography as an art form, always striving for perfection and learning from failure, whereas others only satisfied the criteria while following a formula devised in the 1920s, long before accurate collimation and the risks of radiation were appreciated. Look at my collimation approach to lumbar spines then other videos on my channel. kzbin.info/www/bejne/aoiUmGOLi7R6p5Isi=2kxhsXDyyb29gnTC
@nindlalmeghwar8027 ай бұрын
Good knowledge
@janechinenye14298 ай бұрын
❤❤❤
@caitlin5508rules9 ай бұрын
Thanks Jonah Hill, loved you in super bad
@sune67082 ай бұрын
I’m dead as fuck lol
@thevoiceharmonic9 ай бұрын
Never use centring points. Accurately collimate. My favourite axial view is not shown. That is when the patient carefully stands on the cassette. It is very quick and easy
@thevoiceharmonic9 ай бұрын
To improve collimation and reduce patient dose and scatter radiation, follow the traditional instructions shown, then alter the tube angulation so collimation is at its best. Remember that we were never taught a rule. Tube angulation in this way, only changes collimation. It doesn't change the projection geometry because the tube focus does not move with tube angulation. kzbin.info/www/bejne/o4uzdZKdgdhoetksi=mBJqu0ngW2b0Bzlu
@thevoiceharmonic9 ай бұрын
If you include the foot on an AP ankle, you have followed the 1920 instructions instead of working out the best approach. you may as well direct the beam to the ankle and exclude the foot by centring above the ankle joint. A change of 5cm makes no detectable difference to the projection, but if you are a stickler to the traditional representation, centre on the ankle joint, then angle up until the collimation suits the ankle. Remember that changing the tube angle like This does not change the position of the tube focus, so the projection does not change. Tube angulation only changes collimation. kzbin.info/www/bejne/o4uzdZKdgdhoetksi=mBJqu0ngW2b0Bzlu
@thevoiceharmonic9 ай бұрын
Always exclude the lower leg and ankle from foot xrays. With the weight bearing projection. You need to show all of the sole of the foot, so begin with horizontal beam centred on the sole, then angle the tube upwards to include the foot and collimate. Changing the tube angle in this way does not change the geometrical relationship between focus, object and collector as shown in this video. kzbin.info/www/bejne/o4uzdZKdgdhoetksi=mBJqu0ngW2b0Bzlu. Unfortunately, only. 25% of radiographers know about projection geometry. I presented papers at national conferences in Australia in 1988 and 2016, the last one because all three university tutors didn't understand it
@thevoiceharmonic9 ай бұрын
Well done. Good instructional video. I have been looking at shoulder xrays from KZbin tutors from the Indian subcontinent and they don't collimate at all. For example, a clavicle xray will also involve primary beam dose to all of the skull, cervical spine, humerus, forearm, and most of the chest and abdomen, and then they will not include a 30 degree uptilt.
@wilson25456 ай бұрын
Could you make a video on Y view shoulder/scapula, I'm a student and I have the most difficulty with these projections. Love your videos and your approach to xray.
@thevoiceharmonic6 ай бұрын
I retired 6 years ago after 40 years of general radiography in 40 different practices. I have no access to patients or images or a graphics program. My approach was unconventional because it relied on understanding the anatomy and learning directly from experience. The shoulder Y view is best done with a 10 degree down tilt with the arm and forearm touching the erect bucky. With most patients the scapula can be felt directly. Rotate the collimator to improve collimation. Don't be afraid of making mistakes, jus the sure you learn from them.@@wilson2545
@thevoiceharmonic6 ай бұрын
The complication with the shoulder is that it can be shrugged forward, backward, up and down. Try to do laterals with the shoulders shrugged forward. That removes a way to make errors of judgement. As with the spine, put your patient in a standard position that best suits the geometry of the projection. In this way you are rewarded with increased accuracy buzz and pride rather than task completion to a satisfactory standard. Become a master of the art. That is its own reward @@wilson2545
@phillipperez335811 ай бұрын
Thanks for the upload. It really came in handy. Noticed you never continued on. Are you still posting? I'd love to see the upper extremities
@lscmradr326811 ай бұрын
I will have to continue with some more. I have just not had the time lately.
@phillipperez335811 ай бұрын
@@lscmradr3268 i understand. Thank you for all the uploads. It's helping me get through LMRT