No abstract available.
Motion Sickness

No abstract available.
Instinct* ; Motion Pictures as Topic*

No abstract available.
Motion Pictures as Topic*

Isolate fracture of lunate is very rare. The authors reported a neglected fracture of lunate which was founded incidentally after the dorsal wall fracture of triquetrum. Pain reduction and improvement of range of motion was achieved after excising the dorsal fragment of lunate.
Range of Motion, Articular

Range of Motion, Articular*

Humans ; Motion Sickness ; diagnosis ; Travel

Arginine Vasopressin ; Humans ; Motion Sickness

No abstract available.
Joints* ; Range of Motion, Articular* ; Spine*

PURPOSE: To compare the results of open fixation and closed percutaneous pinning in managing Jakob stage II lateral condylar fractures of children's elbow. MATERIALS AND METHODS: Since Febuary 2000, We operated 21 children with Jakob stage II lateral condylar fractures of elbow. Eleven of the 21 were treated with closed percutaneous pinning, open fixation was done to the other 10 children. Each patient was evaluated about range of motion, carrying angle, scar satisfaction and radiologic findings for comparison between closed pinning and open fixation groups. RESULTS: Open fixation group showed 3.8 degrees decrease of elbow motion while closed pinning group showed no significant decrease. Carrying angle and radiologic findings were not different between the two groups. Open fixation group expressed dissatisfaction to their scars (average 5.2 cm) whereas all the patients of closed pinning group were satisfied with their functional and cosmetic outcomes. CONCLUSION: In managing Jakob stage II lateral condyle fractures of children's elbow, closed percutaneous pinning was thought to be superior to open fixation because of the same functional outcome and much better cosmetic results.
Child* ; Cicatrix ; Elbow ; Humans ; Range of Motion, Articular

In this paper, we propose an image-based key frame gating method to reduce motion artifacts in intravascular ultrasound (IVUS) longitudinal cuts. The artifacts are mainly caused by the periodic relative displacement between blood vessels and the IVUS catheter due to cardiac motion. The method is achieved in four steps as following. Firstly, we convert IVUS image sequences to polar coordinates to cut down the amount of calculation. Secondly, we extracted a one-dimensional signal cluster reflecting cardiac motion by spectral analysis and filtering techniques. Thirdly, we designed a Butterworth band-pass filter for filtering the one-dimensional signal clusters. Fourthly, we retrieved the extremes of the filtered signal clusters to seek key frames to compose key-frames gated sequences. Experimental results showed that our algorithm was fast and the average frame processing time was 17ms. Observing the longitudinal viewpictures, we found that comparing to the original ones, the gated sequences had similar trend, less saw tooth shape, and good continuity. We selected 12 groups of clinical IVUS sequences [images (876 +/- 65 frames), coronary segments length (14.61 +/- 1.08 mm)] to calculate vessel volume, lumen volume, mean plaque burden of the original and gated sequences. Statistical results showed that, on one hand, both vessel volume and lumen volume measured of the gated sequences were significantly smaller than those of the original ones, and there was no significant difference on mean plaque burden between original and gated sequences, which met the need of the clinical diagnosis and treatment. On the other hand, variances of vessel area and lumen area of the gated sequences were significantly smaller than those of the original sequences, indicating that the gated sequences would be more stable than the original ones.
Algorithms ; Artifacts ; Heart ; Humans ; Motion ; Ultrasonography, Interventional