ABSTRACT
Purpose To explore the significance of stomach full acoustic imaging in the diagnosis of congenital hypertrophic pyloric stenosis (CHPS). Materials and Methods 44 cases of CHPS children underwent gastrointestinal filling acoustic contrast imaging, diameter and mucous layer thickness of the front and rear walls of the pyloric tube were measured, the contrast agent flow between the pyloric lumen gaps was observed. Results With the backdrop of the ultrasound contrast agent, delicate structure of the stomach and pyloric mucosa could be more clearly observed, it was shown that muscular layer in the middle of pyloric tube was thickest and mucosal layer edema and thickening was more obvious near the antrum;internal diameter of pyloric tube was (1.95±0.35) mm;first pass time of the contrast agent through the pyloric tube:within 5 min in 16 cases, 5-10 min in 19 cases, while clear pass through still could not be observed by 20 minutes in 9 cases;during the 20 minutes observation, contrast agent passed through the pyloric tube for 5 times or more in 13 cases, 1 to 5 times in 22 cases, while 9 cases showed no obvious pass. Conclusion Stomach full acoustic imaging enables clearly and detailed observation of the structural characteristics of the pyloric tube and hydrodynamic manifestation of the stomach liquid when passing through the tube, thus is significantly important for surgical treatment and efficacy evaluation.
ABSTRACT
Objective To explore the effects on dogs' testis by microbubbles excitated by ultrasound.Methods Sixteen male dogs were divided into 3 groups randomly.Pulsed ultrasound irradiation and intravenous microbubbles injection were both applied in the microbubble enhanced ultrasound group (MEUS),pulsed ultrasound irradiation and intravenous microbubbles injection were individually applied in the ultrasound group (TUS) and the simple microbubbles group (MB).Results In MEUS group,the layers of seminiferous tubules decreased and the germ cells were arranged disorderly and bubbles appeared in the cells.The appearances of focal ultra-structural damage such as intercellular space widening,baseline broken and tight-connection of sustentacular cells disappearing were observed by transmission electron microscope,which were slightly or hardly demonstrated in other groups.Conclusions Microbubbles excitated by ultrasound can affect testicular germ cells and the integrity of bloold-testis harrier,which providing new train of thought of target treatments of testis diseases.
ABSTRACT
Objective To evaluate the diagnosis of proximal vas deferens and epididymis with contrast-enhanced ultrasonography (CEUS) in healthy adult canines. Methods Six healthy male adult dogs were dissected to expose unilateral vas deferens. CEUS was performed after injecting ultrasound contrast agents into vas deferens by catheter. X ray angiography was taken after injecting compound meglumine diatrizoate. The image features of CEUS and X ray angiography were displayed by CEUS. Results Under CEUS, inguinal segment of proximal vas deferens were straight and symmetrical in diameter, scrotal segment of vas deferens were tortuous,and the tail of epididymis were speckled which enhanced shaped as a comma. The inguinal and scrotal segment of vas deferens section was display well by X-ray angiography.Conclusions CEUS is a new method in proximal vas deferens and tail of epididymis examination. It can provide guidance for the disease diagnosis of seminal vesicle and ductal system.