3D-ASL脑灌注成像技术临床应用及研究进展
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HuangDD, Lou X*, Ma L, etc. RSNA, 2013, Oral presentation
301 PLAGH
301 PLAGH
PLD=1.5S
16.56
51.04
42.29
301病例
PLD=2.5S
43.12
301 PLAGH
301病例
Lou X, Ma L. Can 3D pCASL be another predictor to evaluate the collateral Perfusion in Patients with severe intracranial arterial stenosis? ISMRM Scientific Meeting, Italy, 2014
301 PLAGH
Huang DD, Wu B, Shi KN, Ma L Lou X*. Reliability of Threedimensional pseudo-continuous arterial spin labelling MR imaging for measuring visual cortex perfusion on two 3T scanners. PLOS ONE. 2013;8(11):e79471
301医院放射科 娄昕
2014年4月 11日郑州
301 PLAGH
3D ASL技术简介 3D ASL临床应用 3D ASL研究进展
301 PLAGH
采用可弥散的示踪剂进行成像的方法 15O-Water PET Xenon CT ASL MRI 99Tc-HMPAO SPECT(Microsphere-like tracers)
DSC灌注
3D ASL
CBF=49 CBF=109
301 PLAGH
301病例
51岁,男性,右顶叶占位病变术后,T2WI与DWI 301 PLAGH
术后增强 DSC灌注
301 PLAGH
3D ASL DSC灌注
CBF=85 CBF=41
301 PLAGH
301病例
49岁男性,右侧肢体力弱
治
Meeting, Italy, 2014
301 PLAGH
3D ASL技术简介 3D ASL临床应用 3D ASL研究进展
301 PLAGH
N=8 healthy volunteers (7M, 1F, 27-41Y) PCASL, BS, 3D spiral FSE 3 Scans on 2 scanners, 10-15 days apart
301 PLAGH
有很好的一致性 CBF的侧值无明显差异 ASL 更有利于显示治疗后的过度灌注 (luxury perfusion)
Hernandez D a, etc. Pseudocontinuous arterial spin labeling quantifies relative cerebral blood flow in acute stroke. Stroke. 2012;43:753–8.
PLD = 1.5S
PLD = 2.5S
PLD = 1.5S
100
PLD = 2.5S
PLD = 1.5S
100
PLD = 2.5S
PLD = 1.5S
100
PLD = 2.5S
100
1st test (scanner 1)
80
80
80
80
2nd test (scanner 2)
60
60
60
60
40
采用不可弥散的示踪剂进行成像的方法 CTP DSC MRI
301 PLAGH
Pulsed ASL (PASL) 脉冲式 Continuous ASL (CASL) 连续式 Pseudo-continuous ASL (PCASL) 准连续式
SNR ACCURACY SAR
PASL +
采用不可弥散的示踪剂进行成像的方法 CTP DSC MRI
301 PLAGH
采用可弥散的示踪剂进行成像的方法 15O-Water PET 放射性损伤、成本高 Xenon CT 放射性损伤、舒适性差 ASL MRI 99Tc-HMPAO SPECT(Microsphere-like tracers)放射性损伤、半定量
+++ +
CASL +++
+
++
+
PCASL +++ +++ ++
301 PLAGH
传统ASL
3D ASL
采用EPI采集,磁敏感伪影 采用FSE采集,有效克服
明显
磁敏感伪影
2D采集,成像范围有限
3D采集,大范围成像
对运动伪影敏感
Spiral采集高效快速,有 效克服运动伪影
图像质量不稳定
40
40
40
3rd test (scanner 1)
20
20
20
20
Subject 1
0
Subject 2
0
Subject 4
301 PLAGH
Wu B, Lou X*, Wu XH, Ma L. Intra- and inter-scanner reliability and reproducibility of 3D whole-brain pseudo-continuous arterial spinlabeling MR perfusion on 3T. J Magn Reson Imaging. 2014;39(2):402-9.
治
疗
疗
前
后
301 PLAGH
3D ASL显示溶栓治疗后过度灌注
301 PLAGH
MELAS
301病例
脑梗死
Lou X, Ma L, et al. Differential Diagnosis of MELAS and Ischemic Stroke
using 3D Pseudocontinuous Arterial Spin Labeling. ISMRM Scientific
图像信噪比明显提高
301 PLAGH
3D ASL技术简介 3D ASL临床应用 3D ASL研究进展
301 PLAGH
脑膜瘤 海绵状血管瘤
301病例
301 PLAGH
星形细胞瘤, WHO II 级
星形细胞瘤, WHO III 级
301病例
301 PLAGH
301病例
50岁,男性,脑干占位病变,平扫T2与T1加权像 301 PLAGH
301 PLAGH
301 PLAGH
PLD=1.5S
16.56
51.04
42.29
301病例
PLD=2.5S
43.12
301 PLAGH
301病例
Lou X, Ma L. Can 3D pCASL be another predictor to evaluate the collateral Perfusion in Patients with severe intracranial arterial stenosis? ISMRM Scientific Meeting, Italy, 2014
301 PLAGH
Huang DD, Wu B, Shi KN, Ma L Lou X*. Reliability of Threedimensional pseudo-continuous arterial spin labelling MR imaging for measuring visual cortex perfusion on two 3T scanners. PLOS ONE. 2013;8(11):e79471
301医院放射科 娄昕
2014年4月 11日郑州
301 PLAGH
3D ASL技术简介 3D ASL临床应用 3D ASL研究进展
301 PLAGH
采用可弥散的示踪剂进行成像的方法 15O-Water PET Xenon CT ASL MRI 99Tc-HMPAO SPECT(Microsphere-like tracers)
DSC灌注
3D ASL
CBF=49 CBF=109
301 PLAGH
301病例
51岁,男性,右顶叶占位病变术后,T2WI与DWI 301 PLAGH
术后增强 DSC灌注
301 PLAGH
3D ASL DSC灌注
CBF=85 CBF=41
301 PLAGH
301病例
49岁男性,右侧肢体力弱
治
Meeting, Italy, 2014
301 PLAGH
3D ASL技术简介 3D ASL临床应用 3D ASL研究进展
301 PLAGH
N=8 healthy volunteers (7M, 1F, 27-41Y) PCASL, BS, 3D spiral FSE 3 Scans on 2 scanners, 10-15 days apart
301 PLAGH
有很好的一致性 CBF的侧值无明显差异 ASL 更有利于显示治疗后的过度灌注 (luxury perfusion)
Hernandez D a, etc. Pseudocontinuous arterial spin labeling quantifies relative cerebral blood flow in acute stroke. Stroke. 2012;43:753–8.
PLD = 1.5S
PLD = 2.5S
PLD = 1.5S
100
PLD = 2.5S
PLD = 1.5S
100
PLD = 2.5S
PLD = 1.5S
100
PLD = 2.5S
100
1st test (scanner 1)
80
80
80
80
2nd test (scanner 2)
60
60
60
60
40
采用不可弥散的示踪剂进行成像的方法 CTP DSC MRI
301 PLAGH
Pulsed ASL (PASL) 脉冲式 Continuous ASL (CASL) 连续式 Pseudo-continuous ASL (PCASL) 准连续式
SNR ACCURACY SAR
PASL +
采用不可弥散的示踪剂进行成像的方法 CTP DSC MRI
301 PLAGH
采用可弥散的示踪剂进行成像的方法 15O-Water PET 放射性损伤、成本高 Xenon CT 放射性损伤、舒适性差 ASL MRI 99Tc-HMPAO SPECT(Microsphere-like tracers)放射性损伤、半定量
+++ +
CASL +++
+
++
+
PCASL +++ +++ ++
301 PLAGH
传统ASL
3D ASL
采用EPI采集,磁敏感伪影 采用FSE采集,有效克服
明显
磁敏感伪影
2D采集,成像范围有限
3D采集,大范围成像
对运动伪影敏感
Spiral采集高效快速,有 效克服运动伪影
图像质量不稳定
40
40
40
3rd test (scanner 1)
20
20
20
20
Subject 1
0
Subject 2
0
Subject 4
301 PLAGH
Wu B, Lou X*, Wu XH, Ma L. Intra- and inter-scanner reliability and reproducibility of 3D whole-brain pseudo-continuous arterial spinlabeling MR perfusion on 3T. J Magn Reson Imaging. 2014;39(2):402-9.
治
疗
疗
前
后
301 PLAGH
3D ASL显示溶栓治疗后过度灌注
301 PLAGH
MELAS
301病例
脑梗死
Lou X, Ma L, et al. Differential Diagnosis of MELAS and Ischemic Stroke
using 3D Pseudocontinuous Arterial Spin Labeling. ISMRM Scientific
图像信噪比明显提高
301 PLAGH
3D ASL技术简介 3D ASL临床应用 3D ASL研究进展
301 PLAGH
脑膜瘤 海绵状血管瘤
301病例
301 PLAGH
星形细胞瘤, WHO II 级
星形细胞瘤, WHO III 级
301病例
301 PLAGH
301病例
50岁,男性,脑干占位病变,平扫T2与T1加权像 301 PLAGH