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Ct perfusion
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Sunday, 5:42 PM EDT by
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Thread started: May 6 2013, 11:07 AM EDT
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Can someone explain what ct perfusion imaging is,,,any good articles i can check out
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Last Reply:
RE: Ct perfusion
By: ,
Sunday, 5:42 PM EDT
CT perfusion is the process of scanning the same area multiple times as IV contrast is injected and reconstructing the data to dive information about blood flow.
In my department we currently do CT perfusion in cases of suspected stroke with our Siemens Somatom Flash scanner. We do 28 low dose scans over 112 seconds and then use the VPCT Perfusion Auto Stroke program to construct colour maps of: Cerebral blood volume, Cerebral blood flow and Time to peak. This allows one to see if there is any at risk but salvageable brain tissue. We usually do a CT angio carotids and C.O.W. as well at the same time.
CT perfusion can also be used to assess blood flow to tumours, although I'm not sure if it being done anywhere currently.
There are LOTS of articles on CT perfusion for stoke.
Marco de Lucas et al 2008 "CT Protocol for acute stroke: Tips and tricks for general radiologists" Radiographics 28 pp 1673-1687
Best et al 2012 "Recognizing false ischemic penumbras in CT brain perfusion studies" Radiographics 32 pp. 1179-1196
Lev MH 2013 "Perfusion Imaging of Acute Stroke: Its Role in Current and Future Clinical Practice" Radiology 226 pp 22-27.
CT perfusion is still pretty new so there is not a lot of clinical evidence on it . Some think that it is not be used in clinical practice until it has been proven to influence outcomes. Such as:
Goyal et al 2013 "Perfusion imaging in acute stroke: Let us improve the science before changing clinical practice" Radiology 266 pp 16-21
Happy reading!
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Don't miss
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May 16 2013, 4:32 AM EDT by
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Thread started: May 16 2013, 4:32 AM EDT
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special care is needed when scanning Obs U/S of Placenta previa
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Best Radiographic Positioning for better Diagnosis
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May 15 2013, 2:33 AM EDT by
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Thread started: May 15 2013, 2:33 AM EDT
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There should be best positioning for better Dx at the Radiology department. I will try to give you a high light regarding special positions which are not routinely applied at every radiology department but which are very important to look for the better anatomy of the subject. I need your commitment to attend the training which will be given for the future basis.
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abb paceman
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May 13 2013, 11:24 PM EDT by
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Thread started: May 13 2013, 11:24 PM EDT
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easy rememberable abb
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oguevara |
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Screen Contact test and QAP test for digital systems?
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May 13 2013, 8:02 PM EDT by
oguevara |
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Thread started: May 13 2013, 8:02 PM EDT
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I"m looking for information on QAP test done on Digital systems. I was told that this type of test is now done instead of the screen contact test. Any help would be gladly appreciated. Thank you.
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GOOD BOOKS FOR STUDYING BASIC RADIOLOGY
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May 9 2013, 1:56 PM EDT by
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Thread started: May 9 2013, 1:56 PM EDT
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I'm in school to be an LSRT and need a good book to use to study. I was hoping to find a book kinda of like Radiology For Dummies but they don't have one. Any input is appreciated
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RajiMarisetty |
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how we differ ap and pa view
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May 8 2013, 12:53 PM EDT by
bigmike78 |
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Thread started: Jun 2 2012, 11:50 PM EDT
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if a plain radiograph given how v differ ap and pa view
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Last Reply:
RE: how we differ ap and pa view
By: bigmike78,
May 8 2013, 12:53 PM EDT
I tell my students to use markers to help them & an easy mnemonic: PAL & RAP
Left marker (on lt side of pt) for PA: PAL
Right Marker (on rtight side of pt) for AP: RAP
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RT coronary perforation
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May 6 2013, 11:43 AM EDT by
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Thread started: May 6 2013, 11:43 AM EDT
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we the RT coronary artery supply the RT side of heart and SA node by conus branches and SA (SA is tiny branches a rise from ostum of RT coronary )
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all users
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May 4 2013, 10:57 AM EDT by
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Thread started: May 4 2013, 10:57 AM EDT
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Hi everyone
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AAFD
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Apr 26 2013, 7:55 PM EDT by
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Thread started: Apr 26 2013, 7:55 PM EDT
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THE UPDATES IN AAFD
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cephalic/caudal
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Apr 26 2013, 6:48 PM EDT by
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Thread started: Apr 25 2013, 3:19 AM EDT
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As far as I understand.. Cephalic is towards the head, caudal towards the legs, maybe is just a simple typo...
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Last Reply:
RE: cephalic/caudal
By: ,
Apr 26 2013, 6:48 PM EDT
This is how i have been taught! Cephalic head , caudal legs :)
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LouiseCheesman |
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Different exposures between PA and AP
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Apr 26 2013, 6:45 PM EDT by
LouiseCheesman |
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Thread started: Apr 26 2013, 6:45 PM EDT
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Why is there a difference in exposure factors?
Is it due to the positioning of the heart? The beam needs to be more penetrating PA therefore higher kVp? please help me understand this :)
Thank you ,
Louise
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IVU protocol
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Apr 22 2013, 6:17 PM EDT by
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Thread started: Jun 1 2009, 11:08 AM EDT
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latest contrast media used and dosage; image quality assessment.
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ANODE HEEL EFFECT
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Apr 10 2013, 11:27 PM EDT by
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Thread started: Sep 18 2012, 11:52 AM EDT
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hello everyone.. my name is eifa.
well i am going to conduct a study " anode heel effect on image quality and dose in lumbar spine radiography".. anybody can share with me? anything come across your mind about this topic that might can help my study..
hope to hear suggestion from you all..
thanks everybody..
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Last Reply:
RE: ANODE HEEL EFFECT
By: ,
Apr 10 2013, 11:27 PM EDT
Hai everyone..
Firstly i would like to thnks for all the suggestion and opinion..
Well my final year project still ongoing. But then, here i would like to ask for anyone opinion. My annealing tld for dose measurement cant be used for certain reasons. Any option that i can used to replace tld for dose measurement at breast and ovary?
im already think of using pen dosimeter, but then happy to hear opinion from you all.. thnks everyone(",)
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Spondylolisthesis images
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Apr 9 2013, 6:12 PM EDT by
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Thread started: Apr 9 2013, 6:12 PM EDT
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Thanks Wikiradiography for the information provided in this page related to my case-study "Spondylolisthesis"
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hien
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Apr 4 2013, 9:55 AM EDT by
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Thread started: Apr 4 2013, 9:55 AM EDT
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hello wikiradiology
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Different TM joint positioning
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Apr 2 2013, 10:09 AM EDT by
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Thread started: Apr 2 2013, 10:09 AM EDT
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Positioning Technique, radiographic technique, radiography, Image evaluation,
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thushuga |
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good article
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Mar 22 2013, 1:16 AM EDT by
thushuga |
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Thread started: Mar 22 2013, 1:16 AM EDT
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Here i have to add something to this. if you can please add some picture of that x ray type as well then it is more useful to people like us. anyway this is good site to learn.
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L.Hernandez |
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Lateral Chest X-ray orientation
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Mar 13 2013, 11:12 PM EDT by
L.Hernandez |
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Thread started: Mar 13 2013, 11:12 PM EDT
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I have always had an issue with the fact that many technologists transmit their Lateral Chest X-rays oriented to the right. I think the issue arose with prevalence of CR radiography. Chest protocols in CR workstations may have been incorrectly setup to flip both images instead of just the PA. It is also possible this occured with earlier systems that had limited capability and having only the PA image flipped was not option. Therefore, since having both images automatically flipped was preferable to neither, the trend became established. I can find no other explanation as to why a Radiographer would transmit a Lateral Chest oriented to the right and I am confident that this did not occur with Film/screen Radiography.
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wrist
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Mar 11 2013, 6:06 AM EDT by
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Thread started: Mar 6 2013, 11:13 AM EST
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shouldn't this be labelled PA Wrist?
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Last Reply:
RE: wrist
By: ,
Mar 11 2013, 6:06 AM EDT
I suspect you are correct- I have made text changes
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