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8 Cards in this Set
- Front
- Back
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List the main categories of Ddx for ring-enhancing lesions on the CT Brain.
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1. Malignancy
2. Abscess 3. Demyelination 4. Infarction 5. Resolving haematoma 6. Radiation necrosis |
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List the 3 main types of malignancy categories associated with Ring-enhancing lesions on the CT brain .
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1. Primary
2. Metastatic 3. Lymphoma |
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List the 2 main categories of abscess Ddx with ring-enhancing lesions on the CT brain.
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1. Bacterial Staphylococcal
2. Toxoplasmosis |
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What are the main CT Brain signs of increased intracranial pressure ?
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1. Midline shift - ventricular compression.
2. Sulcal effacement 3. Loss of grey-white differentiation 4. 4th ventricle compression |
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When comparing Cytotoxic and Vasogenic oedema on CT Brain, which of the following is incorrect ?
A. Vasogenic oedema is usually associated with interstitial oedema . B. The oedema surrounding an abscess is usually confined to the grey matter. C. Cytotoxic oedema is usually associated with intracellular oedema involving both grey and white matter. D. The mass effect with Peritumoral oedema is usually greater than that with cytotoxic oedema. |
B. White matter
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Which is incorrect regarding the comparison of vasogenic and cytotoxic oedema ?
A. Attenutation of the oedema is decreased the most with vasogenic / peritumoral oedema. B. The initial oedema of acute stroke is vasogenic oedema. C. The subacute oedema of stroke ( > 24 hours) is usually interstitial -vasogenic, and can lead to mass effect. D. Vasogenic oedema is from capillary leak and accumulation of fluid in the interstitial space. |
B. Cytotoxic
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Which is incorrect regarding radiation and cancer from CT Brain ?
A. The CT brain radiation dosing is 30% higher in Children B. The risk of lethal malignancy in Paediatric CT brain is 1: 1000 C. The Lifetime attributable risk of a single cancer from CT brain in a 20 year old Female is 1: 2000 and Male is 1:4000 D. The Lifetime attributable risk of a single cancer from a CT brain in a 40 year old Female is 1:8000 |
C. Female : 1:4000
Male : 1:7000 [ * 2009 Archives of Internal Medicine ] |
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In regards to CT Cervical-spine, which of the following is correct in regards to Lifeftime attributable risk of a single cancer from the CT?
A. 20 year old Female: 1: 1000 B. 40 Year old Male : 1: 6000 C. 20 year old Male : 1: 2000 D. 40 year old Female : 1: 5000 |
B.
A 20 year old Female = 1: 2500 C. 20 year old Male = 1: 4000 D. 40 year old Female = 1: 4500 [ * 2009 Archives of Internal Medicine ] |
