review for anatomy and common acute conditions
TRANSCRIPT
![Page 1: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/1.jpg)
DR Mohammad Aburumman Arab Board OF RADIOLOGY
-Fellow of I.R
![Page 2: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/2.jpg)
BRAIN CT SCAN PART I
REVIEW FOR ANATOMY AND Common acute conditions
for clinician
![Page 3: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/3.jpg)
SCHEME OF THE LECTURE
BASIC PRINCIPLES OF CT SCAN
NORMAL ANATOMY AS SEEN ON CRANIUM CT SCANS
ILLUSTRATIONS
![Page 4: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/4.jpg)
Basics: • X-RAYS ARE ABSORBED DIFFERENTLY BY DIFFERENT TISSUES
• Always describe CT findings as densities- isodense/hypodense/hyperdense.
• Higher density = the appearance IS WHITER • Lower density = the appearance IS DARKER• Brain is the reference density• Anything of the density as brain= isodense• Higher density than brain= hyperdense ( BONE is example)• Anything darker than brain= hypodense( ie. CSF and air )
![Page 5: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/5.jpg)
HOUNSFIELD UNITS
H.U! ?
Represent the density of tissue
Calculated automatically by Ct scan machine processor by Place the marker on area of interest
![Page 6: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/6.jpg)
![Page 7: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/7.jpg)
![Page 8: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/8.jpg)
8
![Page 9: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/9.jpg)
30 H.U
![Page 10: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/10.jpg)
45 H.U
![Page 11: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/11.jpg)
1000H.U
![Page 12: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/12.jpg)
![Page 13: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/13.jpg)
![Page 14: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/14.jpg)
![Page 15: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/15.jpg)
![Page 16: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/16.jpg)
![Page 17: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/17.jpg)
![Page 18: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/18.jpg)
![Page 19: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/19.jpg)
![Page 20: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/20.jpg)
Petroclinoid lig. calcification
![Page 21: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/21.jpg)
tentorium cerebelli
![Page 22: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/22.jpg)
FALX CEREBELLI
![Page 23: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/23.jpg)
FALX CEREBELLI
![Page 24: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/24.jpg)
![Page 25: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/25.jpg)
STROKE
![Page 26: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/26.jpg)
![Page 27: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/27.jpg)
I schaemic Stroke 1 st 6 Hours :60% Normal Vogue subtle Hypodensity .Sulcal effacment Loss of Grey/White matter
Distinction ...12-24 More prominant low
attenuated area .
![Page 28: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/28.jpg)
Ischaemic Stroke After 24 hours Well demarcated low attenuation . 3-5 days Mass effect which may gone by 2-4
weeks . Long Term Encephalomalcia
![Page 29: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/29.jpg)
![Page 30: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/30.jpg)
![Page 31: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/31.jpg)
IS CONTRAST NECESSARY??
![Page 32: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/32.jpg)
Hemorrhagic Stroke
![Page 33: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/33.jpg)
Sub Dural and Epidural Hematoma Usually traumatic >>> Subdural Venous bleed due to stretching and tearing of
bridging cortica
![Page 34: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/34.jpg)
Epidural Arterial bleed The source of bleeding is usually a torn
meningeal artery (most commonly, the middle meningeal artery)
meningeal artery. Skull Fracture . >95% are supratentorial temporoparietal: 60%
![Page 35: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/35.jpg)
![Page 36: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/36.jpg)
EDH
![Page 37: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/37.jpg)
S.A.H
![Page 38: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/38.jpg)
TO
BE
CONTINUE
![Page 39: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/39.jpg)
THANK YOU
![Page 40: Review for anatomy and common acute conditions](https://reader035.vdocuments.site/reader035/viewer/2022070602/587394e41a28ab85438b5441/html5/thumbnails/40.jpg)