RESUMEN
Objective To investigate the rule of the talar growth and establish a normal radiographic measurement scale of the talus from postnatal infants to adults. Methods Radiographic measurements were performed with the lateral radiographs of right talus in 1*!765 normal cases(age 1 to 18). Results The talar growth velocity was the fastest before two years old.It was consistent with the development of physiques(e.g.height and weight),and then there was not a remarkable increase in the talar growth.At puberty,a temporal sudden increase was not found in the talus.Conclusion Radiographic measurements not only provide a normal contrast for the flats of the talus or the abnormal shapes caused by some congenital or acquired disease,but also was useful to the other subject(e.g.anthropology,forensic science).
RESUMEN
Objective To study the manifestations of perfusion change in small heptic cell cancer(SHCC) on dynamic contract-enhanced MRI. Methods 18 cases of SHCC(21 lesions) proved by pathology were presented. Dynamic contrast-enhanced MRI was performed using 2D T_1-turbor-FLASH sequence for 18 SHCC.Results Among all 18 cases of SHCC, 17 cases were obvious enhanced, and one case was no enhancement. In 17caese of enhanced tumors, the maximal peak of enhancement was in the first set (6~23 s) in 2 cases and in the second set (33~51 s) in 15 cases. The average maximal peak of contrast-enhanced time was 42.5 s(23~50.5 s),and the average maximal peak of signal intensity increased up to 30.5 (19.5~45.0). The pattern of time-intensity curve was rapid wash-in followed by washout in 17 cases.Conclusion Dynamic contract-enhanced MRI is important on study and diagnosis of SHCC.
RESUMEN
We observed the normal variations of metatarsal and phalangeal bones in 1363 cases of normal children and youngsters (city group and countryside group), described occurring rate, area, ages and sex of 6 types of the variations, contrasted the difference between city group and country side groups, and discussed some characterastics and clinic significances of normal variations.