“易損斑塊無(wú)創(chuàng)、高分辨超聲功能與分子定量成像”研究2010年度報(bào)告

萬(wàn)明習(xí)　宗瑜瑾　萬(wàn)錦錦　吳道澄　谷曉林

摘要：本研究本年度在（1）高分辨超聲成像理論與方法、（2）微泡制備、高CTR造影成像及灌注參量成像、（3）血管及其周?chē)M織運(yùn)動(dòng)與彈性檢測(cè)成像、（4）超聲空化機(jī)理等四個(gè)方面研究取得重要進(jìn)展。對(duì)高幀率、較高頻率超聲圖像分別進(jìn)行了基于光流場(chǎng)（OF）的IBP超分辨重建和基于灰度非均勻校正的超分辨重建，重建后軸向及橫向分辨率可達(dá)到原始圖像的4倍以上；并在低成本數(shù)字超聲成像系統(tǒng)上實(shí)現(xiàn)了高CTR值的造影成像和灌注參量定量成像和脈沖逆轉(zhuǎn)小波變換造影成像技術(shù)；初步得到模仿人體生理pH環(huán)境下，聚焦超聲自由空化場(chǎng)中聲致發(fā)光（SL）的光學(xué)檢測(cè)實(shí)驗(yàn)結(jié)果及聲致化學(xué)發(fā)光（SCL）的光學(xué)檢測(cè)實(shí)驗(yàn)結(jié)果。

關(guān)鍵詞：超分辨重建；超聲造影成像；超聲空化；聲致發(fā)光；

Abstract：This year we make important progresses in following aspects： （1） Principle and methods of high resolution ultrasound imaging， （2）Preparation of microbubbles， ultrasound perfusion imaging with high CTR and perfusion parameter imaging， （3）motion and elasticity imaging of vascular and surrounding tissue， （4）mechanism of ultrasound cavition. The high frame rate and higher frequency ultrasound images have been made IBP super-resolution reconstruction based on optic flow and super-resolution reconstruction based on grey scale ununiformity correction， and the axial and lateral resolution after reconstruction can reach to four times higher than the original images. Additionally， ultrasound contrast imaging with high CTR， perfusion parameter quantitative imaging and pulse inverse wavelet transform contrast imaging have been realized on low cost digital ultrasound imaging system. Preliminary optical experimental results of sonoluminesence （SL） and sonochemoluminesence （SCL） in focused ultrasound free cavitation field have been obtained in a pH similar to human physiological environment.

Keywords：super-resolution reconstruction；ultrasound perfusion imaging；ultrasound cavitation；sonoluminesence