Ultra-High-Frequency Ultrasound Vs High-Frequency Ultrasound In Assessing Superficial Infantile Hemangioma

Objective:To discuss the clinical value of ultra-high-frequency ultrasound by comparing 22 MHz ultra-high-frequency ultrasound with 13 MHz high-frequency ultrasound about assessing the clinical condition of superficial infantile hemangiomas.Methods:Choose 33 patients with superficial infantile hemangioma who are inpatients in Department of Burn and Plastic Surgery of Shandong Provincial Hospital Affiliated to Shandong University from Dec.2015 to Jan.2016.The depth of every patient’s tumor is less than 1cm.Collect both two-dimensional ultrasound images and color Doppler flow images of the same section of every patient before therapy, scanning with 22MHz and 13MHz ultrasound separately. Classify these two-dimensional ultrasound images according to whether the boundry of the tumor can be recognized and compare the result. Select the 1 cm×1 cm areas which are just under the probe from these color Doppler flow images and separate every color Doppler flow image into two parts from the depth of 0.5cm. Analyze them by the software of ImageMagick to compare 22 MHz ultra-high-frequency ultrasound with 13 MHz high-frequency ultrasound on the ability of displaying the blood flow.Results:22 MHz ultra-high-frequency ultrasound is useless to help us to distinguish the boundry of more tumors than 13 MHz high-frequency ultrasound (x2=0.44, P=0.51) As to the color Doppler flow images, there are differences between 22 MHz ultra-high-frequency ultrasound and 13 MHz high-frequency ultrasound in different depths(0～0.5cm:t=-9.38, P<0.05; 0.5～1.0cm:t=4.59,P<0.05).But they have no difference in displaying total blood floow(t=-1.63, P=0.11).Conclusion:22 MHz ultra-high-frequency ultrasound is better than 13 MHz high-frequency ultrasound to assess the clinical condition of a superficial hemangioma when the depth of the tumor is less than 0.5cm.And when the depth of the tumor is more than 0.5cm, we can get more information about t a superficial hemangioma by combining 22 MHz ultra-high-frequency ultrasound with 13 MHz high-frequency ultrasound.