Summary
The value of angled temporal lobe cuts as a supplement to conventional head computed tomography (CT) has been assessed by comparing the diagnostic yield of standard axial and specific temporal lobe images (TLCT) in 62 patients with temporal lobe epilepsy and 87 with Alzheimer-type senile dementia. Fewer than one patient in six had structural abnormality in the temporal lobe most readily demonstrated by axial CT. Five patients with epilepsy and ten with dementia had changes demonstrated only by TLCT, reported on by one or other of a pair of observers. However such changes were of dubious clinical relevance, or arose as a result of artefact. In one patient with epilepsy and underlying neoplasm, axial CT was positive and TLCT false-negative. The routine addition of temporal lobe cuts to a conventional axial examination confers no added benefit to justify the prolonged examination time and increased radiation dose to the lens of the eye.
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EL Gammal T, Adams RJ, King DW, So EL, Gallagher BB (1987) Modified CT techniques in the evaluation of temporal lobe epilepsy prior to lobectomy. AJNR 8: 131–134
George AJ, Leon MJ de, Stylopoulos LA, Miller J, Kluger A, Smith G, Miller DC (1990) CT diagnostic features of Alzheimer disease: importance of the choroidal/hippocampal fissure complex. AJNR 11: 101–107
Schorner W, Meenke HJ, Felix R (1987) Temporal lobe epilepsy: comparison of CT and MR imaging. AJNR 8: 773–781
Duncan R, Patterson J, Hadley DM, Macpherson P, Brodie MJ, Bone I, McGeorge AP, Wyper DJ (1990) CT, MR and SPECT imaging in temporal lobe epilepsy. J Neurol Neurosurg Psychiatry 53: 11–15
LeMay M, Stafford JL, Sandor T, Albert M, Haykal H, Zamani A (1986) Statistical assessment of perceptual CT scan rating in patients with Alzheimer type dementia. J Comput Assist Tomogr 10: 802–809
Kido DK, Caine ED, LeMay M, Ekholm S, Booth H, Panzer R (1989) Temporal lobe atrophy in patients with Alzheimer disease: a CT study. AJNR 10: 551–555
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Straiton, J.A., Macpherson, P. & Teasdale, E.M. Supplementary CT temporal lobe cuts confer no worthwhile benefit. Neuroradiology 33, 19–21 (1991). https://doi.org/10.1007/BF00593327
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DOI: https://doi.org/10.1007/BF00593327