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[The early and delayed SPECT images of 123I-IMP and rCBF measurement]
Insights
Early and delayed SPECT imaging with 123I-IMP aids in diagnosing ischemic cerebral vascular disorders (CVD). The study details regional cerebral blood flow (rCBF) measurements and the redistribution phenomenon observed in delayed images, crucial for CVD assessment.
Area of Science:
- Nuclear Medicine
- Neurology
- Radiology
Background:
- Cerebral vascular disorders (CVD) diagnosis relies on accurate assessment of cerebral blood flow.
- 123I-IMP SPECT imaging offers insights into regional cerebral blood flow (rCBF).
Observation:
- Early 123I-IMP SPECT images reveal low perfusion areas in CVD, often segmented by severity.
- X-ray CT correlates with rCBF values: 15 ml/100 g/min (low density), 34 ml/100 g/min (peri-low density), and 46 ml/100 g/min (normal density/low perfusion).
Findings:
- The redistribution phenomenon is frequently observed on delayed 123I-IMP SPECT images.
- This redistribution occurs in areas with rCBF ranging from 25 to 35 ml/100 g/min.
Implications:
- SPECT imaging with 123I-IMP provides valuable data for diagnosing ischemic CVD.
- Understanding rCBF and redistribution patterns enhances diagnostic accuracy in cerebrovascular disease.
Abstract:
The early and delayed SPECT images of 123I-IMP, and rCBF measurement were discussed in the diagnosis of ischemic cerebral vascular disorders (CVD). On early SPECT image of 123I-IMP in the CVD, the low perfusion area usually consists of three or four parts differing in severity. The regional blood flow (rCBF) of the area corresponding to the low density area, peri-low density area and normal density and low perfusion area on X-ray CT are 15 ml/100 g.brain/min, 34 ml/100 g.brain/min and 46 ml/100 g.brain/min, respectively. The redistribution phenomenon is frequently observed on delayed 123I-IMP SPECT images. This phenomenon is observed in the area in which rCBF is 25 to 35 ml/100 g.brain/min.