[A newly developed maneuver, field change conversion (FCC), improved evaluation of the left ventricular volume more accurately on quantitative gated SPECT (QGS) analysis].
[A newly developed maneuver, field change conversion (FCC), improved evaluation of the left ventricular volume more accurately on quantitative gated SPECT (QGS) analysis].
复制标题
[新开发的操作，场变化转换 (FCC)，改进了定量门控 SPECT (QGS) 分析中更准确地评估左心室容量]。
DOI：
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发表时间：
2002
影响因子：
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通讯作者：
K. Imai
中科院分区：
文献类型：
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作者：
O. Tajima;M. Shibasaki;T. Hoshi;K. Imai
目的
研究一种新开发的将重建面积减少一半的方法是否能更准确地评估定量门控SPECT（QGS）分析的左心室（LV）容积。
方法
受试者为38例接受左心室造影（LVG）的患者，随后在2周内进行G-SPECT。使用通用准直器和64 x 64矩阵进行采集。在QGS分析中，原始图像（原始：ORI）的视野放大率为34 cm，此外，将其从34 cm变更为17 cm以放大重建图像（视野变更转换：FCC）。左心室舒张末期容积（EDV）和收缩末期容积（ESV）也采用LVG获得。
结果
ORI、FCC和LVG的EDV分别为71 +/- 19 ml、83 +/- 20 ml和98 +/- 23 ml（p < 0.001：ORI vs LVG，p < 0.001：ORI vs FCC，p < 0.001：FCC vs LVG）。ORI、FCC和LVG的ESV分别为28 +/- 12 ml、34 +/- 13 ml和41 +/- 14 ml（p < 0.001：ORI vs LVG，p < 0.001：ORI vs FCC，p < 0.001：FCC vs LVG）。
结论
在临床病例中，FCC计算左室容积优于ORI。此外，FCC是QGS分析中准确测量LV体积的有用方法。
PURPOSE
To investigate whether a newly developed maneuver that reduces the reconstruction area by a half more accurately evaluates left ventricular (LV) volume on quantitative gated SPECT (QGS) analysis.
METHODS
The subjects were 38 patients who underwent left ventricular angiography (LVG) followed by G-SPECT within 2 weeks. Acquisition was performed with a general purpose collimator and a 64 x 64 matrix. On QGS analysis, the field magnification was 34 cm in original image (Original: ORI), and furthermore it was changed from 34 cm to 17 cm to enlarge the re-constructed image (Field Change Conversion: FCC). End-diastolic volume (EDV) and end-systolic volume (ESV) of the left ventricle were also obtained using LVG.
RESULTS
EDV was 71 +/- 19 ml, 83 +/- 20 ml and 98 +/- 23 ml for ORI, FCC and LVG, respectively (p < 0.001: ORI versus LVG, p < 0.001: ORI versus FCC, p < 0.001: FCC versus LVG). ESV was 28 +/- 12 ml, 34 +/- 13 ml and 41 +/- 14 ml for ORI, FCC and LVG, respectively (p < 0.001: ORI versus LVG, p < 0.001: ORI versus FCC, p < 0.001: FCC versus LVG).
CONCLUSION
FCC was better than ORI for calculating LV volume in clinical cases. Furthermore, FCC is a useful method for accurately measuring the LV volume on QGS analysis.