Examining the Sensory System
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Ischaemic Changes of Different Anatomical Regions or Vascular Territories
Bilateral watershed infarct The non-contrast CT brain shown is from a patient with bilateral watershed infarct. Here, chronic ischaemic changes can be seen along the external or cortical watershed zones (Figures 1 and 2). These “borderzones” is where the terminal vasculature of the anterior cerebral artery and middle cerebral artery meet as well as where the middle…
Case application for CT anatomy (1)
Interpret the following CT brain carefully.
Multiple Sclerosis
The set of cranial MRIs shown here are from a young woman with a known history of relapsing-remitting multiple sclerosis. In the first scan (T2W axial cut), we can see multiple T2 hyperintense lesions involving bilateral cerebral cortices (Figure 1). These lesions are noted to be of a juxta-cortical and also peri-ventricular distribution, which are classical of multiple sclerosis. In the next…
Muscle Wasting / Muscle Atrophy
One can appreciate from this photo that there is significant lower limb wasting (or muscle atrophy) of the right leg compared to the left. The right leg is also shorter compared to the left. Muscle wasting (or atrophy) is due to denervation of the muscle supplied by the motor nerve and occurs in lower motor…
Vascular Dementia
Vascular dementia is the second most common cause of dementia and accounts for approximately 10% of all dementias in developed countries. The incidence of vascular dementia increases with age and are associated with common cardiovascular risk factors (hypertension, diabetes, dyslipidaemia etc.). Patients often present with a sudden, stepwise, neurological deterioration and there may be other…
Lower Limbs
Subtitles in English for this video can be displayed by clicking on (first button on the bottom right hand corner of the video). Inspection of the Lower Limbs After positioning the patient on the bed and ensuring adequate exposure, the lower limbs should be inspected as follow: The examiner should stand at the end of the bed and…
