الفهرس 
Gross anatomy of the skullOnly 14 pages are availabe for public view
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Abstract
The present work included 63 patients presented with acute
head trauma and positive finding/findings in head multidetector CT
scan. They were 49 males and 14 females with male/female ratio
3.5:1. Their ages ranged between 12 days and 70 years with a mean
age of 20 years.
The aim of this study was to evaluate the role of multidetector
CT scanning in the diagnosis of the sequelae of acute head trauma of
different severity.
All patients were examined using a MDCT scanner (Siemens’
Emotion 6). The scan parameters used were 130 KVp and ≤ 240mA
per slice; tube rotation 0.75s and slice thickness 1.25 mm; lower doses
(60-120 mA) were used with pediatric and small patients.
The lesions were divided into: fifty patients presented with skull
fractures (79%), forty four patients had extra axial hemorrhages
(70%), nineteen patients had brain contusions (30%), and five patients
had intraventricular hemorrhage (8%).
MDCT was successful in adequate characterization of the extent
and type of the hemorrhages and skull fractures in cases of acute head
trauma.
The MPR and 3D reconstruction images added more
information to the routine axial images alone in 32 instances (38%)
out of the total number of 118 MDCT findings. Among the 50 patients (79% of all patients) with skull fractures;
the MPR and 3D images showed better demonstration of the type and
extension of the fracture in 18 patients (36% of patients with skull
fractures and 28.6% of all patients) either in combination with the
axial images or alone specially in fractures of temporal bone, the high
part of the parietal bone (the vertex) and in the base of the skull.
In patients with extra axial hemorrhages (44 patients with 70%
of all patients) including (23 patients with subdural hematomas, 11
patients with subarachnoid hemorrhages and 10 patients with epidural
hematomas); the MPR images added more diagnostic value in 10
patients (22.7% of patients with extra axial hemorrhages and 15.9% of
all patients) where the MPR images showed better demonstration of
hemorrhages in areas near bone artifacts like the vertex or near the
inferior surface of anterior, middle and posterior cranial fossae.
In patients with hemorrhagic brain contusions (19 patients with
30% of all patients); the MPR images showed better demonstration of
the contusions in 4 patients (21%% of patients with hemorrhagic
contusions and 6.3% of all patients); these lesions encountered in
areas adjacent the bone like the lower part of the anterior cranial fossa,
the vertex and the temporal lobe, where these areas are being adjacent
to the frontal, ethmoidal, sphenoid and the high parts of the parietal
bones.
MDCT with MPR and 3D reconstruction should be considered
in the diagnosis of brain hemorrhages and skull fractures in cases of
acute head trauma.