CT能谱成像在血管造影中的应用进展
摘要
能谱CT是指具有快速千伏峰值切换技术的单源双能计算机断层扫描,它通过使用单个X射线源和探测器同时采集患者的低能量和高能量数据,精确重建出从40～140keV的单能量图像,并获得物质密度图像、能谱曲线及有效原子序数等。了解这些能谱CT技术可提高CT在血管应用中的价值,包括改善血管对比度,改善病变的显示情况,减少图像伪影,减少辐射剂量及器官灌注成像等。
引文
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[7]肖虎.双能量CT低剂量成像结合迭代重建技术在超重者冠状动脉成像中的研究[J].实用放射学杂志,2017,6(27):617-620.
[8]殷小平,王佳宁,田笑,等.能谱CT最佳单能量成像优化肝脏血管图像质量的研究[J].放射学实践,2017,32(9):942-946.
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[11]MACHIDA H,FUKUI R,TANAKA I,et al.A method for selecting aprotocol for routine body CT scan using Gemstone Spectral Imaging with or without adaptive statistical iterative Reconstruction:phantom experiments[J].Jpn J Radiol,2014,32(4):217-223.
[12]任小璐,刘云,王杏娟,等.能谱CT评估颈动脉粥样硬化非钙化斑块成分[J].中国医学影像技术,2013,29(2):202-205.
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[15]POSTMA A A,DAS M,STADLER A A,et al.Dual-Energy CT:what the neuroradiologist should know[J].Curr Radiol Rep,2015,3(5):16-20.
[16]MANNELLI L,MACDONALD L,MANCINI M,et al.Dual energy computed tomography quantification of carotid plaques calcification:comparison between monochromatic and polychromatic energies with pathology correlation[J].Eur Radiol,2015,25(5):1238-1246.
[17]KULKARNI N M,SAHANI D V,DESAI G S,et al.Indirect computed tomography venography of the lower extremities using single-source dual-energy computed tomography:advantage of low-kiloelectron volt monochromatic images[J].J Vasc Interv Radiol,2012,23(7):879-886.
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[19]HE J Z,MA X X,WANG Q,et al.Spectral CT demonstration of the superior mesenteric artery:comparison of monochromatic and polychromatic imaging[J].Acad Radiol,2014,21(3):364-368.
[20]RAJU R,THOMPSON A G,LEE K,et al.Reduced Iodine load with CT coronary angiography using dual-energy imaging:aprospective randomized trial compared with standard coronary CT angiography[J].J Cardiovasc Comput Tomogr,2014,8(4):282-288.
[21]林惠岚.头颈部CTA能谱成像与头颈部DSA对微小动脉瘤筛查及诊治的比较研究[J].中西医结合心脑血管病杂志,2017,15(15):1918-1921.
[22]LI B J,YADAVA G,HSIEH J.Quantification of head and body CTDI(VOL)of dual-energy x-ray CT with fast-kVp switching[J].Med Phys,2011,38(5):2595-2601.
[23]PESSIS E,CAMPAGNA R,SVERZUT J M,et al.Virtual monochromatic spectral imaging with fast kilovoltage switching:reduction of metal artifacts at CT[J].Radiographics,2013,33(2):573-583.
[24]吴瑶媛,董江宁,曹锋,等.能谱CT最佳单能量成像优化甲状腺结节图像质量的研究[J].影像诊断与介入放射学,2017,26(2):103-107.
[25]GEYER L L,SCHERR M,KRNER M,et al.Imaging of acute pulmonary embolism using a dual energy CT system with rapid kVp switching:initial results[J].Eur JRadiol,2012,81(12):3711-3718.
[26]SCHESKE J A,O′BRIEN J M,EARLS J P,et al.Coronary artery imaging with single-source rapid kilovolt peak-switching dual-energy CT[J].Radiology,2013,268(3):702-709.
[27]SO A,HSIEH J,IMAI Y,et al.Prospectively ECG-triggered rapid kV-switching dual-energy CT for quantitative imaging of myocardial perfusion[J].JACC Cardiovasc Imaging,2012,5(8):829-836.
[2]EULER A,PARAKH A,FALKOWSKI A L,et al.Initial results of a Single-Source Dual-Energy computed tomography technique using a Split-Filter:assessment of image quality,radiation dose,and accuracy of Dual-Energy applications in an in vitro and in vivo study[J].Invest Radiol,2016,51(8):491-498.
[3]赵永霞,常津,左紫薇,等.不同浓度对比剂联合能谱CT扫描在肾动脉CT血管成像中的应用[J].中国医学影像学杂志,2016,2(2):153-156.
[4]刘佳怿,张俊.能量CT在胰腺肿瘤诊断中的研究现状[J].实用放射学杂志,2013,29(6):1008-1010.
[5]FORGHANI R,LEVENTAL M,GUPTA R,et al.Different spectral hounsfield unit curve and high-energy virtual monochromatic image characteristics of squamous cell carcinoma compared with nonossified thyroid cartilage[J].AJNR Am J Neuroradiol,2015,36(6):1194-1200.
[6]FUCHS T A,STEHLI J,FIECHTER M,et al.First experience with monochromatic coronary computed tomography angiography from a 64-slice CT scanner with gemstone spectral imaging(GSI)[J].J Cardiovasc Comput Tomogr,2013,7(1):25-31.
[7]肖虎.双能量CT低剂量成像结合迭代重建技术在超重者冠状动脉成像中的研究[J].实用放射学杂志,2017,6(27):617-620.
[8]殷小平,王佳宁,田笑,等.能谱CT最佳单能量成像优化肝脏血管图像质量的研究[J].放射学实践,2017,32(9):942-946.
[9]ZHANG D,LI X H,LIU B.Objective characterization of GE discovery CT750HD scanner:gemstone spectral imaging mode[J].Med Phys,2011,38(3):1178-1188.
[10]FORGHANI R,DE MAN B,GUPTA R.Dual-Energy computed tomography:physical principles,approaches to scanning,usage,and implementation:part 2[J].Neuroimaging Clin N Am,2017,27(3):385-400.
[11]MACHIDA H,FUKUI R,TANAKA I,et al.A method for selecting aprotocol for routine body CT scan using Gemstone Spectral Imaging with or without adaptive statistical iterative Reconstruction:phantom experiments[J].Jpn J Radiol,2014,32(4):217-223.
[12]任小璐,刘云,王杏娟,等.能谱CT评估颈动脉粥样硬化非钙化斑块成分[J].中国医学影像技术,2013,29(2):202-205.
[13]KULKARNI N M,EISNER B H,PINHO D F,et al.Determination of renal stone composition in phantom and patients using single-source dual-energy computed tomography[J].J Comput Assist Tomogr,2013,37(1):37-45.
[14]MANNELLI L,MITSUMORI L M,FERGUSON M,et al.Changes in measured size of atherosclerotic plaque calcifications in dual-energy CT of ex vivo carotid endarterectomy specimens:effect of monochromatic keV image reconstructions[J].Eur Radiol,2013,23(2):367-374.
[15]POSTMA A A,DAS M,STADLER A A,et al.Dual-Energy CT:what the neuroradiologist should know[J].Curr Radiol Rep,2015,3(5):16-20.
[16]MANNELLI L,MACDONALD L,MANCINI M,et al.Dual energy computed tomography quantification of carotid plaques calcification:comparison between monochromatic and polychromatic energies with pathology correlation[J].Eur Radiol,2015,25(5):1238-1246.
[17]KULKARNI N M,SAHANI D V,DESAI G S,et al.Indirect computed tomography venography of the lower extremities using single-source dual-energy computed tomography:advantage of low-kiloelectron volt monochromatic images[J].J Vasc Interv Radiol,2012,23(7):879-886.
[18]MACHIDA H,TANAKA I,FUKUI R,et al.Current and novel imaging techniques in coronary CT[J].Radiographics,2015,35(4):991-1010.
[19]HE J Z,MA X X,WANG Q,et al.Spectral CT demonstration of the superior mesenteric artery:comparison of monochromatic and polychromatic imaging[J].Acad Radiol,2014,21(3):364-368.
[20]RAJU R,THOMPSON A G,LEE K,et al.Reduced Iodine load with CT coronary angiography using dual-energy imaging:aprospective randomized trial compared with standard coronary CT angiography[J].J Cardiovasc Comput Tomogr,2014,8(4):282-288.
[21]林惠岚.头颈部CTA能谱成像与头颈部DSA对微小动脉瘤筛查及诊治的比较研究[J].中西医结合心脑血管病杂志,2017,15(15):1918-1921.
[22]LI B J,YADAVA G,HSIEH J.Quantification of head and body CTDI(VOL)of dual-energy x-ray CT with fast-kVp switching[J].Med Phys,2011,38(5):2595-2601.
[23]PESSIS E,CAMPAGNA R,SVERZUT J M,et al.Virtual monochromatic spectral imaging with fast kilovoltage switching:reduction of metal artifacts at CT[J].Radiographics,2013,33(2):573-583.
[24]吴瑶媛,董江宁,曹锋,等.能谱CT最佳单能量成像优化甲状腺结节图像质量的研究[J].影像诊断与介入放射学,2017,26(2):103-107.
[25]GEYER L L,SCHERR M,KRNER M,et al.Imaging of acute pulmonary embolism using a dual energy CT system with rapid kVp switching:initial results[J].Eur JRadiol,2012,81(12):3711-3718.
[26]SCHESKE J A,O′BRIEN J M,EARLS J P,et al.Coronary artery imaging with single-source rapid kilovolt peak-switching dual-energy CT[J].Radiology,2013,268(3):702-709.
[27]SO A,HSIEH J,IMAI Y,et al.Prospectively ECG-triggered rapid kV-switching dual-energy CT for quantitative imaging of myocardial perfusion[J].JACC Cardiovasc Imaging,2012,5(8):829-836.