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[N-isopropyl-p-[I123] iodoamphetamine single photon emission computed tomography (I123-IMP SPECT) and child
1First Department of Pediatrics, Toho University School of Medicine, Tokyo.
Insights
Iodine-123-IMP SPECT imaging detected abnormalities in 90% of pediatric CNS disorder patients, significantly outperforming CT scans. This technique offers superior detection of localized lesions and early pathological changes.
Area of Science:
- Neurology
- Nuclear Medicine
- Pediatric Imaging
Background:
- Assessing the clinical utility of Iodine-123-IMP SPECT in pediatric Central Nervous System (CNS) disorders.
- Comparing I123-IMP SPECT findings with conventional cranial Computed Tomography (CT) in a cohort of 50 pediatric patients.
Observation:
- I123-IMP SPECT identified abnormalities in 45 out of 50 patients (90%), compared to 24 out of 50 (48%) for CT.
- In patients without initial focal CT findings, I123-IMP SPECT revealed focal abnormalities in 93% (26/28).
- I123-IMP SPECT detected pathological changes 3-11 days earlier than CT in acute cerebrovascular disorder cases.
Findings:
- I123-IMP SPECT demonstrated significantly higher sensitivity (p < 0.01) in detecting CNS abnormalities across various pediatric neurological conditions.
- The imaging modality revealed more extensive lesions than CT in many cases and correlated well with neurological deficits.
- I123-IMP SPECT provides insights into the blood perfusion state surrounding lesions identified by CT.
Implications:
- I123-IMP SPECT may be a more effective tool than CT for diagnosing localized brain lesions in pediatric patients.
- Early detection of pathological states is enhanced by I123-IMP SPECT, potentially improving patient management.
- This technique aids in understanding the perfusion dynamics in pediatric CNS disorders.
Abstract:
We studied the clinical usefulness of I123-IMP SPECT in 50 pediatric patients with CNS disorders, which were categorized into the convulsive disorder group (n = 20), the cerebrovascular disorder group (n = 10), the acute encephalopathy or CNS infection group (n = 10), the metabolic or degenerative disorder group (n = 6), the congenital abnormality group (n = 2) and the migraine group (n = 2). The findings obtained were compared with those of cranial CT. I123-IMP SPECT revealed abnormal findings in 45 out of the 50 patients (90%), although cranial CT showed abnormal findings in only 24 patients (48%). This difference was statistically significant (p less than 0.01). In all groups except the migraine, we could find abnormal findings in more than 90% of the patients. Out of 28 patients without focal findings on the initial CT scanning, I123-IMP SPECT showed focal abnormalities in 26 patients (93%). Moreover in many patients with focal neurological abnormalities, we found focal abnormalities of I123-IMP SPECT related with neurological abnormalities of the patients. From these findings, we think I123-IMP SPECT might be better to CT scanning in examining a localized lesion. It was found that in many patients with focal abnormalities in CT scanning, I123-IMP SPECT showed larger abnormalities in CT scanning. By using I123-IMP SPECT we might be able to study the blood perfusional state surrounding the abnormal area shown by CT. In 3 patients with acute cerebrovascular disorders, I123-IMP SPECT revealed abnormal findings 3 to 11 days earlier than cranial CT.I123-IMP SPECT might be useful for early recognition of the pathological state.(ABSTRACT TRUNCATED AT 250 WORDS)