Acute infarct selective MRI contrast agent.

Acute infarct selective MRI contrast agent.
复制标题

DOI:
10.1007/s10554-011-9811-8
复制
发表时间:
2012-02
影响因子:
2.1
通讯作者:
Elgavish, Gabriel A.
Elgavish, Gabriel A.
中科院分区:
医学4区
文献类型:
--
作者:
Robert Kirschner;Akos Varga-Szemes;Tamas Simor;Suranyi, Pal;Kiss, Pal;Ruzsics, Balazs;Brott, Brigitta C.;Elgavish, Ada;Elgavish, Gabriel A.

文献摘要

参考文献

相似文献

确定低分子量造影剂 Gd(ABE-DTTA) 在心肌梗塞 (MI) 亚急性期的梗塞亲和力。使用闭胸再灌注心肌梗死模型对狗(n = 7)进行检查。 MI 是通过用血管成形术球囊闭塞左前降支 (LAD) 冠状动脉 180 分钟而产生的。 MI 后第 4、14 和 28 天获得 Gd(ABE-DTTA) 的 DE-MRI 图像。第 27 天进行 Gd(DTPA) 对照 DE-MRI。第 3、13 和 27 天获取 T2-TSE 图像。氯化三苯基四唑 (TTC) 组织形态测定法在死后验证了梗塞的存在。 Gd(ABE-DTTA) 在 MI 后的第 4 天突出显示梗塞,但在第 14 天或第 28 天则完全没有突出显示。第 4 天,Gd(ABE-DTTA) 存在下梗死心肌的平均值±SD 信号强度 (SI) 与健康心肌显着不同(45 ± 6.0 与 10 ± 5.0,P < 0.05),但在第 14 天(11 ± 9.4 与 10 ± 5.7,P = NS)和第 28 天(7 ± 5.7)没有显着差异。 1.5 与 7 ± 2.4,P = NS)。第 4 天,Gd(ABE-DTTA) 诱导的平均 ± SD 信号强度增强 (SIE) 为 386 ± 165%,与 MI 后第 14 天的平均 SIE (9 ± 20%) 和第 28 天的平均 SIE (12 ± 18%) 显着不同 (P < 0.05)。最后两个平均值彼此没有显着差异(P = NS)。使用 Gd(DTPA) 作为对照,它确实突出显示了第 27 天的梗塞,诱导平均 SIE 值为 312 ± 40%。 T2-TSE 图像上第 3、13 或 27 天的平均 SIE 没有显着变化 (P = NS)(分别为 114 ± 41%、123 ± 41% 和 150 ± 79%)。尸检后,通过TTC染色证实梗塞的存在。 Gd(ABE-DTTA) 的梗塞亲和力在疤痕愈合的亚急性期消失,允许其在急性期之后的早期用于梗塞年龄区分。
To determine the infarct affinity of a low molecular weight contrast agent, Gd(ABE-DTTA), during the subacute phase of myocardial infarct (MI). Dogs (n = 7) were examined, using a closed-chest, reperfused MI model. MI was generated by occluding for 180 min the Left Anterior Descending (LAD) coronary artery with an angioplasty balloon. DE-MRI images with Gd(ABE-DTTA) were obtained on days 4, 14, and 28 after MI. Control DE-MRI by Gd(DTPA) was carried out on day 27. T2-TSE images were acquired on day 3, 13 and 27. Triphenyltetrazolium chloride (TTC) histomorphometry validated postmortem the existence of infarct. Gd(ABE-DTTA) highlighted the infarct on day 4, but not at all on day 14 or on day 28, following MI. On day 4, the mean ± SD signal intensity (SI) of infarcted myocardium in the presence of Gd(ABE-DTTA) significantly differed from that of healthy myocardium (45 ± 6.0 vs. 10 ± 5.0, P < 0.05), but it did not on day 14 (11 ± 9.4 vs. 10 ± 5.7, P = NS), nor on day 28 (7 ± 1.5 vs. 7 ± 2.4, P = NS). The mean ± SD signal intensity enhancement (SIE) induced by Gd(ABE-DTTA) was 386 ± 165% on day 4, significantly different from mean SIE on day 14 (9 ± 20%), and from mean SIE on day 28 (12 ± 18%), following MI (P < 0.05). The last two mean values did not differ significantly (P = NS) from each other. As control, Gd(DTPA) was used and it did highlight the infarct on day 27, inducing a mean SIE value of 312 ± 40%. The mean SIE on day 3, 13, or 27 did not vary significantly (P = NS) on the T2-TSE images (114 ± 41%, 123 ± 41%, and 150 ± 79%, respectively). Post mortem, the existence of infarcts was confirmed by TTC staining. The infarct affinity of Gd(ABE-DTTA) vanishes in the subacute phase of scar healing, allowing its use for infarct age differentiation early on, immediately following the acute phase.
DOI: 10.1002/mrm.1910080402
发表时间: 1988-12-01
影响因子: 3.3
作者:
JOHNSTON, DL;HOMMA, S;OKADA, RD
通讯作者: OKADA, RD
DOI: 10.1021/jm980454v
发表时间: 1999-07-29
影响因子: 7.3
作者:
Saab-Ismail, NH;Simor, T;Elgavish, AA
通讯作者: Elgavish, AA
DOI: 10.1016/j.jacc.2006.03.071
发表时间: 2006-11-21
影响因子: 24
作者:
Saeed, Maythern;Weber, Oliver;Higgins, Charles B.
通讯作者: Higgins, Charles B.
DOI: 10.1016/s0735-1097(97)00245-3
发表时间: 1997-10-01
影响因子: 24
作者:
Schwitter, J;Saeed, M;Higgins, CB
通讯作者: Higgins, CB
DOI: 10.1002/mrm.20979
发表时间: 2006-09-01
影响因子: 3.3
作者:
Suranyi, Pal;Kiss, Pal;Elgavishi, Gabriel A.
通讯作者: Elgavishi, Gabriel A.