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Iodine-123 HIPDM brain imaging findings in subacute spongiform encephalopathy (Creutzfeldt-Jakob disease)
Insights
[123I] HIPDM imaging revealed decreased brain perfusion in a Creutzfeldt-Jakob disease (CJD) patient, correlating with EEG findings. This neuroimaging may offer insights beyond structural scans, potentially aiding diagnosis.
Area of Science:
- Neuroimaging
- Neurology
- Diagnostic Medicine
Background:
- Creutzfeldt-Jakob disease (CJD) diagnosis typically relies on post-mortem confirmation or invasive brain biopsy.
- Standard imaging techniques like CT and MRI often fail to detect early CJD-related changes.
- Electroencephalography (EEG) can show characteristic patterns but lacks specificity.
Observation:
- A patient with biopsy- and autopsy-proven CJD exhibited reduced [123I] HIPDM uptake in the left frontal and temporoparietal cortex on SPECT imaging.
- EEG revealed diffuse, periodic discharges, predominantly in the left hemisphere.
- Cerebral angiography, CT, and NMR studies were unremarkable, showing no structural abnormalities.
Findings:
- [123I] HIPDM SPECT imaging identified regional cerebral perfusion deficits in CJD.
- The observed perfusion abnormalities may reflect underlying neurochemical and neurophysiological alterations.
- EEG findings correlated with the neuroimaging results, highlighting left-hemisphere involvement.
Implications:
- [123I] HIPDM SPECT imaging may provide valuable information on neurochemical and neurophysiological status in CJD.
- This neuroimaging technique could potentially guide or obviate the need for brain biopsy in CJD diagnosis.
- Non-invasive or less invasive neuroimaging could improve the premortem diagnostic capabilities for CJD.
Abstract:
Decreased perfusion of the left frontal and left temporoparietal cortex has been shown in [123I] HIPDM planar and single photon emission computed tomographic images of a patient with Creutzfeldt-Jakob disease (CJD) that was proven by brain biopsy and subsequent autopsy. An EEG showed diffuse, periodic discharges most prominent to the left hemisphere. Concurrent head computed tomography (CT), nuclear magnetic resonance (NMR), and cerebral angiographic studies were negative. Abnormalities demonstrated by [123I]HPDM imaging and by EEG may represent changes in neurophysiological and neurochemical status while cerebral angiography, CT, and possibly NMR register only anatomic or structural lesions. Premortem diagnosis of CJD depends on brain biopsy; the availability of the [123I] HIPDM study may provide regional cerebral neurochemical and neurophysiological information, guiding or avoiding brain biopsy in the appropriate clinical setting.