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本研究选用核素标记固体试餐的胃排空测定方法,研究了35例正常人及35例慢性胃炎患者的胃排空功能。发现正常人组GET1/2(95±27 min)与国内外报告一致,而慢性胃炎及胃下垂组则明显延长(164±58min)。年龄、性别、体位等对测定无显著影响,说明此方法有实用价值;胃排空障碍(胃轻瘫)与胃窦Ⅲ相肌电有关。胃复安(或吗丁啉)有启动Ⅲ相肌电作用,故对此类患者有明显治疗效果。 相似文献
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目的评价ECToolbox软件测量门控心肌显像左室射血分数(LVEF)的临床价值.方法 31例患者接受静息态门控心肌显像,用ECToolbox软件测量LVEF,并与一周内门控心血池显像测量的结果比较.结果全部患者用ECToolbox软件测量值与心血池显像测量值的相关性为r=0.699(P<0.001);二者无统计学差别(P>0.05).EDV<70 ml组患者ECToolbox软件测量值与心血池显像测量值无相关性;前者高于后者(P<0.05).EDV≥70 ml组ECToolbox软件测量值与心血池显像测量值呈强相关(r=0.834,P<0.001);二者无统计学差别(P>0.05).ECToolbox软件测量值对左室收缩功能是否正常的判断与门控心血池显像无差别(P>0.05).结论用门控心肌显像ECToolbox软件测量LVEF与门控心血池显像比较相关性好且结果准确,但EDV<70 ml时会高估测量值. 相似文献
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本文对111例乳癌病人进行不核素全身骨显像,结果表明34例骨转移病人,骨显像检出率为97%,X线检出率为67.6%。骨显像能一次检出全身骨所有异常病灶,且比X线提前发现无症状转移灶,是一种简便、灵敏、准确的检查方法。将全身骨显像列为乳癌根治术前后的常规检查方法,对乳癌骨转移的早期诊断,治疗及预后观察具有重要临床价值。 相似文献
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MRI及99Tcm-MIBI显像对甲状旁腺机能亢进症的诊断价值 总被引:15,自引:1,他引:14
目的:评价MRI及^99Tcm-甲氧基异丁基异腈(MIBI)显像在原发性甲状旁腺机能亢进症(PHT)中检出病理性腺体的临床价值。方法:25例经手术证实的PHT患者实行了术前定位MRI检查,若甲状旁腺部位发现可凝软组织肿物,其信号高于周围正常甲状腺,则认为是病理性甲状旁腺,其中23例同时进行了双时相99Tcm-MIBI显像,如早期相出现放射性浓聚区且延迟相持续存在则考虑为异常甲状旁腺,MRI和99Tcm-MIBI显像阅片结果与病理检查结果对照。结果:术中共发现39个异常甲状旁腺,包括19个腺瘤(18例),19个增生(6例)和1个上皮细胞癌(1例),MRI和99Tcm-MIBI显像对检出病理性腺体的准确性分别为84.1%和85.0%,但前者灵敏度(74.4%)高于后者(67.6%),而后者的特异性(97.8%)高于前者(91.8%),两种方法联合应用准确性提高到91.3%,灵敏度为91.2%,特异性为91.3%,结论:99Tcm-MIBI显像可作为继B超检查之后的首选术前定位检查法,但最理想的最联合应用MIR和99Tcm-MIBI显像。 相似文献
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肺通气/灌注显像结合血浆D-二聚体分析对肺栓塞的诊断价值 总被引:10,自引:0,他引:10
目的 探讨肺通气 灌注 (V Q)显像结合血浆D 二聚体 (dimer)分析在肺栓塞 (PE)诊断中的临床价值。方法 疑有PE的患者 10 4例进行肺V Q显像和血浆D dimer分析。以临床诊断为依据 ,分别评价肺V Q显像、D dimer分析及V Q显像结合D dimer分析对PE的诊断价值。结果 4 4例确诊为PE ,6 0例排除PE。肺V Q显像对 86例 (82 .7% )明确诊断 ,另 18例 (17. 3% )为非确定性诊断。V Q显像诊断PE的灵敏度、特异性和准确性分别为 84. 1%、75 .0 %和 78. 8%。血浆D dimer分析诊断PE的灵敏度、特异性和准确性分别为 93. 2 %、6 0 . 0 %和 74 . 0 %。以D dimer <5 0 .0mg L作为V Q显像中非确定性诊断病例排除PE的依据 ,则诊断的特异性和准确性分别提高到 85. 0 %和 84 . 6 %。结论 在V Q显像中出现非确定性诊断结果时 ,血浆D dimer测定可作为排除PE的依据 ;V Q显像结合血浆D dimer测定可提高诊断的特异性和准确性。 相似文献
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Objective To evaluate dobutamine technetium-99m methoxy isobutyl nitrile (sestamibi) single-photon emission computed tomography (Dobu-ECT) in detecting residual ischemia and identifying coronary vessel disease after myocardial infarction.Methods Sixty-two patients with confirmed myocardial infarction were studied with Dobu-ECT at the time of coronary artery angiography. Dobutamine was administered intravenously in incremental rates from 5 to 40 μg· kg(-1)·min (-1) at 3-minute intervals. At the highest infusion rate, 7.4×10[8] Bq (99m) Tc-MIBI was injected intravenously, and tomographic imaging was performed after one hour. Resting images were taken after 24 hours, with a second dose of (99m)Tc-MIBI.Results The sensitivity of Dobu-ECT in detecting residual ischemia of myocardial infarction was 76%, which was higher than dobutamine electrocardiography (Dobu-ECG). Regardless of the single-, double- or triple-vessel diseases, Dobu-ECT was superior to Dobu-ECG in identifying residual ischemia (56% vs 4%, 86% vs 27%, 100% vs 47%, P<0.01, respectively). The incidence of residual ischemia in patients receiving thrombolytic therapy was 67%, lower than patients without thrombolysis (72%) or those with an old myocardial infarction (94%).But the differences were not statistically significant. Dobu-ECT detected only 56% of ischemias in non-infarct related myocardium. Eighty-two percent of all significantly stenosed vessels were detected with Dobu-ECT, and 84% of patients with multivessel disease could be accurately identified. The sensitivity of Dobu-ECT was significantly greater for detecting severe stenosis over moderate stenosis. The sensitivity for detecting stenosis in the right coronary artery was greater than left anterior descending or left circumflex, but its specificity was lower.Conclusion Dobu-ECT can identify residual ischemia, as well as its location and extent after myocardial infarction. Dobu-ECT can also accurately detect significantly stenosed vessels. 相似文献
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颌骨骨折的病人除伤后及时抢救、治疗并发症、正确的牵引固定和手术复位外,有效的围手术期护理也是十分重要的,它不但能减轻病人的痛苦,同时能减少感染,提高治愈率,避免各种严重并发症的发生.我科自1992年7月~2005年12月共救治各种颌骨骨折的病人154例,经牵引固定、手术复位和积极的护理均取得了较好的治疗效果,患者恢复了正常的咬合关系和咀嚼功能,现将护理体会报告如下: 相似文献