Biomedical subjects

H Fukatsu

Publications and source records attributed to H Fukatsu.

128 records · Page 8Linked to original sources

PubMedDate not supplied

Ultrasonographic and thermographic evaluation of the lower limb after transfemoral catheterization.

Ten adults undergoing routine transfemoral catheterization were randomly selected for study. Ultrasonography and thermography were performed within 48 hours before and after the catheterization procedure. Sites proximal and distal to puncture were assessed. There were no angiographic procedural complications in any case. Distal to the puncture, Doppler evaluation revealed a decrease in peak systolic velocity (PSV) in six cases, with four showing a greater than 30% fall, while three of the four cases with an increase had a less than 10% rise in PSV. Findings at the proximal site showed no distinct pattern. Changes in the resistive index at both sites were minimal. There was a significant increase in turbulence distal to the site of puncture in six cases. B-mode revealed arterial wall thickening compromising the lumen in half the cases. Thermography was done in four cases, and there was a tendency for an increase in limb temperature after the catheterization procedure. In view of the above-mentioned findings seen in "normal, uncomplicated" procedures, a larger study appears warranted to assess the significance of these findings and to attempt a correlation of the above results with the angiographic procedure.

Adult↗

PubMedDate not supplied

Analysis of knee movement with low-field MR equipment--a normal volunteer study.

This study was performed to make a normal standard by analyzing normal knee movement in detail. An open low-field unit was used for 23 healthy knee joints. With three-dimensional Fourier transformation (3DFT) gradient echo sequence, 50 sagittal slices of 4.5 mm in thickness were obtained at four flexion angles: 0, 30, 60, and 90 degrees (lateral position). Although the tension ratio of the anterior and posterior cruciate ligaments (ACL, PCL) increased during knee flexion, the change in the tension ratio was significantly different between the ACL and PCL. The femur-ACL angle and femur-PCL angle were parallel with the knee flexion angle, but the tibia-ACL angle and tibia PCL angle changed complexly. The lateral and medial condyles rolled and slid during knee flexion, and the medial side moved more than the lateral side, consistent with rotation of the lower thigh. The difference in backward movement distance on the tibia between the two condyles was significantly larger in females than in males. This might explain the dominance of knee osteoarthritis in women. Although the lateral position is not completely physiological, we could show initial cinematic data of up to 90 degrees of knee flexion using open-type MRI, which is impossible with high- and middle-field machines.

Adult↗