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Abnormal cerebral perfusion in chronic methamphetamine abusers: A study using 99mTC-HMPAO and spect
[Acquired valvular disease. 2. Mitral valve diseases].
Demonstration of abnormal perfusion in the pons with high resolution SPECT and Technetium-99m HMPAO in a patient with acoustic neuroma
- N. Yui, T. Togawa, F. Kinoshita, H. Namba, Y. Akiyama
- MedicineAnnals of nuclear medicine
- 1 August 1993
This is the first report of a defect in the brainstem being visualized by perfusion SPECT and this method could make it possible to clarify the cause of a remote effect on the cerebellar perfusion by injury to the brain stem.
Pituitary adenoma and cerebral infarction demonstrated by Tc-99m HMPAO using a high-resolution SPECT system.
Quantifying brain tumor blood flow by the microsphere model with N-isopropyl-p-[123I]iodoamphetamine super-early SPECT
Regional cerebral blood flow was quantitatively measured in 6 patients with brain tumor by the microsphere model with N-isopropyl-p-[123I]iodoamphetamine (IMP) “super-early” single photon emission…
[A study on thallium-201 SPECT in brain metastases of lung cancer: with special reference to tumor size and tumor to normal brain thallium uptake ratio].
- T. Togawa, N. Yui, F. Kinoshita, M. Yanagisawa, H. Namba
- MedicineKaku igaku. The Japanese journal of nuclear…
- 1 March 1995
Thallium-201 brain SPECT showed that T/N ratio, which was usually believed to quantitate the malignancy grade of brain tumor, was affected by tumor size and that more accurate parameter could be obtained by the correction of T/n ratio by tumorsize.
[Neurosurgical treatment for dopamine-induced dyskinesias in Parkinson's disease patients].
Both pallidotomy and pallidal DBS are probably the most effective neurosurgical treatment for DID, because they significantly improve all of the DID, including off-period dystonia, without reduction of levodopa dosage.
[Blood flow measurement of brain tumor by 123I-IMP using 3-heads rotating gamma camera SPECT].
Using 3-heads rotating gamma camera SPECT system, regional blood flow was measured from the super-early image obtained 4 to 6 minutes after the intravenous injection of 123I-IMP on 11 patients with various brain tumors to show the increase of blood flow of the tumor.
[Quantitative measurement of cerebral blood flow by the microsphere model with super-early 123I-IMP brain SPECT].
- H. Namba, M. Yanagisawa, T. Togawa, F. Kinoshita, K. Sueyoshi, N. Yui
- Physics, MedicineKaku igaku. The Japanese journal of nuclear…
- 1 November 1997
The ratio of radioactivity in the conventional early SPECT image to that in the "super-early" image for each brain region negatively correlated with regional CBF value obtained with the " super- early" MS method, indicating that wash-out of IMP from the regions with higher CBF is faster than that from the areas with lower CBF and that CBF values are underestimated with the conventional MS method in regions with high CBF.