Appearances of Pathologies in CT

**Scorpion Lady** · 02-07-08 06:15 PM

Appearances of Pathologies in CT

I’ll briefly describe the radiographic appearances of some diseases in CT.

Note

The information was written as a part of my cross-sectional project at Dubai Women’s College, and it was collected from radiology reference books, academic websites, class notes, and also from clinical observation. The references are provided under each section. Please DO NOT copy this report or use it without the writer's permission.

Written by Scorpion Lady (B.M) / 02/07/2008
All rights reserved. BM

Epidural haematoma

Epidural haematoma is bleeding occurs outside of the dura (between the dura and cranium), usually happen in trauma injuries. Appearances of epidural haematoma in CT scan are (figure 1):

• Dense area (radio-opaque) because of the blood
• Biconvex lesion: convex or lens-shaped appearance
• Smooth margins
• Usually associate with shifting of the ventricular

To get more information axial images can reformat to other planes sagittal and coronal (Figure 2, 3and 4) (Khan, 2007).

Figure 1:

نقره لتكبير أو تصغير الصورة ونقرتين لعرض الصورة في صفحة مستقلة بحجمها الطبيعي

Figure 2: Axial image shows epidural bleeding in vertex

Figure 3: Coronal reformation of same patient

Figure 4: Sagittal reformation of same patient

Reference
Khan, A. N. (2007, July 10). Skull Fractures. In Emedicine. Retrieved December 31, 2007, from http://www.emedicine.com/radio/topic640.htm

**Scorpion Lady** · 02-07-08 06:32 PM

Subdural haematoma

Subdural haematoma is bleeding in subdural space occurs because of traumatic injuries. It can occur in convexity of the brain, and along the flax and tentorium. Appearances of subdural haematoma in CT scan are:

• In acute subdural haematoma it will show as hyperdense area (radio-opaque) parallel to surface of brain (Figure 1), but in long term it will the density will decrease (Figure 2)

• concave to the brain (opposite to epidural haematoma)

• it can be unilateral or bilateral

• It associate ventricular displacement
(Meagher, 2006)

Figure 1:

Figure 2:

Reference
Meagher, R. J. (2006, November 2). Subdural Hematoma. In Emedicine. Retrieved December 31, 2007, from http://www.emedicine.com/neuro/topic575.htm

Written by Scorpion Lady (B.M) / 02/07/2008
All rights reserved. BM

Please DO NOT copy this report or use it without the writer's permission
الرجاء عدم التصرف بالموضوع دون الرجوع الى صاحبة الموضوع

**Scorpion Lady** · 02-07-08 06:39 PM

Hydrocephalus

Hydrocephalus is building up of cerebrospinal fluid in cranial vault. Appearances of hydrocephalus are (Figure 1):

• Ventricular enlargement (dilatation of ventricles)
• Shape of frontal horns will be rounder and size of temporal horns bigger (more than 2mm)
(Dalvi, 2007)

Figure 1: CT brain shows dilatation of ventricles

Reference

Dalvi, A. (2007, April 9). Normal Pressure Hydrocephalus. In Emedicine. Retrieved December 31, 2007, from http://www.emedicine.com/neuro/topic277.htm

Written by Scorpion Lady (B.M) / 02/07/2008
All rights reserved. BM
Please DO NOT copy this report or use it without the writer's permission
الرجاء عدم التصرف بالموضوع دون الرجوع الى صاحبة الموضوع