Biomedical subjects

S Ono

Publications and source records attributed to S Ono.

1,029 records · Page 58Linked to original sources

PubMedDate not supplied

Magnetic stimulation of peripheral nerves. Comparison of magnetic stimulation with electrical stimulation.

We measured total peripheral motor conduction time by two different methods, magnetic stimulation and electrical stimulation, to reveal which is better in determining actual peripheral motor conduction time. In the upper extremities, the difference between magnetic stimulation and electrical stimulation was within a mean time of 1.39 +/- 0.8 msec, while that in the lower extremities was 2.3 +/- 1.1 msec. In any 4 extremities, total peripheral motor conduction time obtained by magnetic stimulation was significantly shorter than that measured by electrical stimulation employing conventional F-wave response. We conclude that stimulus sites 8.8 +/- 5.1 cm distal to spinal motoneurons in the upper extremities, and 10.5 +/- 5.3 cm distal in the lower extremities were stimulated by magnetic stimulation of the peripheral nerves. Electrical stimulation employing conventional F-wave measurement is superior to magnetic stimulation for actual total peripheral nerve conduction study.

Adult↗

PubMedDate not supplied

Change in inferior vena caval diameter detected by ultrasonography during and after hemodialysis.

The diameter of the inferior vena cava (IVC) measured by ultrasonography is used as a parameter to estimate right sided cardiac function and central venous pressure. In the current study the IVC diameter during and after hemodialysis (HD) was measured in chronic HD patients to explore the determinant factors of the diameter, and these results were obtained: 1) the maximal diameter of the IVC during quiet expiration (IVCe) can be a marker of circulating blood volume during as well as after HD, because the linear correlation between IVCe and circulating blood volume during and after HD were significant and almost identical; 2) the amount of ultrafiltration is the major determinant of IVCe during HD, because IVCe and circulating blood volume decreased in parallel with the amount of ultrafiltration during HD; and 3) since the recovery of IVCe and circulating blood volume, which correlated with the increase in serum protein concentration during HD, was almost complete while the body weight remained unchanged after HD, plasma refilling rather than body fluid retention was considered important in the recovery of IVCe and circulating blood volume after HD.

Adult↗

PubMedDate not supplied

Bone and 67Ga scintigraphy in the evaluation of rib lesions in patients with multiple myeloma.

Rib lesions in 14 patients with multiple myeloma were evaluated by 99mTc-phosphorous compound bone scintigraphy and 67Ga scintigraphy. In the present study, in order to accurately detect rib lesions in multiple myeloma, bone and 67Ga scintigraphy were performed in 14 patients with multiple myeloma. The patterns of radionuclide accumulation in rib lesions on bone scintigraphy were classified by their grade, type, and site, and the findings were compared with the results of 67Ga scintigraphy. Thus, in cases of multiple myeloma, it was important to consider carefully both the intensity and the design of bone scintigraphy in combination with follow-up study by 67Ga scintigraphy. As a result of such consideration, we found that bone and 67Ga scintigraphy were useful in distinguishing invasive lesions from benign degenerative changes in the rib cage in cases with suspected rib involvement of multiple myeloma.

Adult↗