治疗剂量131I SPECT/CT显像评价分化型甲状腺癌骨转移

目的 探讨131I SPECT/CT断层融合显像在评价分化型甲状腺癌(DTC)骨转移中的价值.方法 30例确诊为骨转移的DTC患者纳入本研究,其中男14例,女16例,平均年龄54.3±12.6岁.在口服治疗剂量131I后的80～ 96小时完成131I全身平面显像和SPECT/CT断层融合显像.结果 30例患者中单发性骨转移8例,多发性骨转移22例.单发性骨转移的病灶分别位于胸骨、颈椎、胸椎、股骨、锁骨、颅骨和肋骨.22例多发骨转移患者的病灶主要位于脊柱、肋骨、胸骨和骨盆骨等.所有患者的SPECT/CT图像上均可见131I异常放射性浓聚,同机CT示24例为骨破坏,1例为成骨性改变,CT结果为阴性者5例.多发骨转移组的血清甲状腺球蛋白(Tg)明显高于单发骨转移组(P=0.018),两组血清甲状腺球蛋白抗体(A-Tg)并无明显差别(P=0.212).结论 131I SPECT/CT断层融合显像可以较好的将代谢信息和解剖结构信息相结合,更好的评价DTC患者的骨转移.     

131I-SPECT配2.5mA X射线球管装置显像在分化型甲状腺癌131I去除治疗后的临床应用

目的 探讨单光子发射计算机断层显像（SPECT）/X线计算机断层显像（CT）在131I去除治疗分化型甲状腺癌（DTC）后的临床应用.方法 对119例接受甲状腺全切或部分切除术后的DTC患者（其中男性22例,女性97例）,用131I去除残余甲状腺组织（简称去除治疗）5 ～7d后,行131I-SPECT配2.5mA X射线球管装置和131I全身扫描（131I-WBS显像）,所有结果均通过病理、其他影像检查（B超、CT）和临床随访一年,确定DTC转移灶397处.结果 119例病人经131 I-SPECT配2.5mA X射线球管装置融合显像检查发现DTC转移或复发灶377处,占95％ （377/397）,假阴性有9处,占2％（27/397）,假阳性病灶11处,占3％ （11/397）.131I-WBS显像检查发现DTC转移灶或复发灶324处,占82％（324/397）,假阴性有64处,占16％（64/397）,假阳性病灶9处,占2％（9/397）.从病灶检出数目看,差异具有统计学意义（t=-8.445,P＜0.0I）.结论 131 I-SPECT配2.5mA X射线球管装置显像在131I去除治疗后能够精确定位DTC复发和转移,准确鉴别病灶和生理显像或污染的影响,提高DTC术后病灶的检出率,明确病灶的具体部位及摄碘情况,有助于对DTC进行再分期,为患者的进一步治疗提供临床依据.     

99Tcm-MDP全身骨显像联合局部SPECT/CT断层融合图像诊断原发性肝癌胸腰椎转移的临床价值

目的 探讨⁹⁹Tc^m-MDP全身骨显像联合局部CT融合图像诊断原发性肝癌胸腰椎转移的临床价值。方法 65例排除其他恶性肿瘤病史的伴有腰背痛的原发性肝癌患者行全身骨显像及胸腰椎局部SPECT/CT断层融合图像,根据患者综合表现诊断为肿瘤骨转移和无肿瘤骨转移,以手术病理或随访结果为最终诊断标准。采用四格表χ²检验比较全身平面显像与平面显像联合局部SPECT/CT断层融合图像对原发性肝癌胸腰椎转移的检出率,采用两组间的t检验比较两种方法检出胸腰椎转移灶数目的差异性。结果 65例伴有腰背痛的原发性肝癌患者经全身骨显像,检出骨转移病例12例,检出率为18.46%;共检出胸腰椎转移灶57个,有骨转移病灶的患者平均胸腰椎转移灶为4.07䥺SymbolqB@1.27个;全身骨骼联合局部SPECT/CT断层融合图像检出骨转移病例30例,检出率为46.15%;胸腰椎病灶136个,有骨转移病灶的患者平均胸腰椎转移灶4.53䥺SymbolqB@1.20个;两方法间检出率差异有统计学意义(χ²=11.40,P<0.05...     

TPINP和ICTP检测及SPECT和CT显像在乳腺癌骨转移中的应用

目的 比较血清TPINP和ICTP检测及SPECT和CT显像对乳腺癌术后骨转移的诊断价值.方法 选取2012年1月至2014年12月经手术病理确诊的乳腺癌患者252例,进行全身骨显像扫描.SPECT使用低能高分辨准直器,患者取全身前位和后位显像,并结合常规CT扫描进行分析.检测TPINP 和ICTP采用RIA药盒,计算采用log-logit或四参数数据处理模式.结果 乳腺癌术后SPECT骨转移率为19.4%(48/252),48例骨转移患者发现病灶123个;乳腺癌术后CT骨转移率为11.9%(30/252),30例骨转移患者发现病灶53个.SPECT和CT的转移率、病灶数比较差异均有统计学意义(χ2=4.914、P<0.05和χ2=41.386、P<0.01).血清TPINP和ICTP水平在SPECT阳性组明显高于SPECT阴性组,两者比较差异均有统计学意义(t=4.609、P<0.01和t=8.799,P<0.01).结论 99Tcm-MDP全身骨显像与CT显像比较对乳癌术后骨转移有有重要的临床应用价值,具有灵敏度高、早期发现、全身成像不易漏诊的优点.TPINP作为骨形成标志物、ICTP作为骨吸收标志物能在早期出现变化,对乳腺癌术后骨转移有重要的临床应用价值.全身显像与骨转换生化标志物相互补充,乃肿瘤诊断和治疗的趋势.     

SPECT全身骨显像、血清tPSA及fPSA/tPSA比值及病理分级与前列腺癌骨转移的关系探讨

目的：探讨SPECT全身骨显像、血清tPSA水平、fPSA/tPSA比值及前列腺癌病理分级与前列腺癌骨转移的关系,并研究其发生骨转移的规律和特点。方法：以核医学SPECT全身骨显像为金标准,回顾性分析了体外放免法测定的107例前列腺癌患者的血清PSA（前列腺特异抗原）水平、血清fPSA/tPSA比值及全身骨显像和病理分级。结果：107例前列腺癌患者：49例发生骨转移,占45.8%（49/107）,其中不同病理分组之间骨转移发生率比较差异有统计学意义,分化程度越低,骨转移发生率越高;随着tPSA水平的升高,骨转移的发生率明显增加;血清tPSA（4～40）ng/ml时,采用fPSA/tPSA比值,可明显提高前列腺癌诊断特异性。结论：前列腺癌患者骨转移发生率与前列腺癌的分化程度、血清PSA水平及fPSA/tPSA比值有一定的关系。分化程度越低,骨转移发生率越高。     

骨显像诊断恶性肿瘤骨转移临床价值的探讨

探讨骨显像在诊断恶性肿瘤骨转移中的临床应用价值。478例已确诊恶性肿瘤患者均行SPECT99mTc-MDP全身骨显像,结合CT、MRI检查结果,分析计算全身骨显像对恶性肿瘤骨转移的灵敏度、特异性、阳性预测值、阴性预测值、诊断准确率等,并统计恶性肿瘤骨转移的高发部位。获得数据采用χ2检验分析处理。结果显示：骨显像的灵敏度、特异性、阳性预测值、阴性预测值和诊断准确率分别为：91.9%、68.2%、90.6%、74.1%和79.3%。结论：骨显像对探测骨骼病理改变的灵敏度非常高,在早期诊断恶性肿瘤骨转移方面较MRI/CT敏感（χ2=3.99P〈0.05）。做为一种简便、安全、灵敏的显像技术,其性价比很高,值得临床大力推广。     

SPECT/CT骨显像对脊柱单发阳性病灶的应用价值

目的评价99Tcm-亚甲基二膦酸盐（MDP）SPECT/CT骨断层显像对脊柱单发阳性病灶良恶性鉴别诊断的价值。方法对921例99Tcm-MDP全身骨显像提示脊柱单发阳性病灶的患者,行SPECT/CT局部断层显像,得到局部SPECT、CT及融合影像。阅片由两位有经验的核医学医师分别独立进行,所有病灶均以病理学结果及6个月以上的影像随访为＂金标准＂。结果在921例患者中,161例诊断为肿瘤骨转移（17.5%）,4例诊断为原发骨肿瘤（0.4%）,2例诊断为骨髓瘤（0.2%）,5例诊断为骨结核（0.5%）,689例诊断为良性病变（74.8%）,59例诊断为外伤致椎体压缩性骨折（6.4%）,1例诊断为许莫氏结节（0.1%）。肿瘤骨转移病例共161例,其中颈椎9例（5.6%）,胸椎46例（28.6%）,腰椎82例（50.9%）,骶椎24例（14.9%）。按部位分类,颈椎病变共30例,肿瘤骨转移9例（30%）;胸椎病变共224例,肿瘤骨转移46例（20.5%）;腰椎病变共606例,肿瘤骨转移82例（13.5%）;骶椎病变共61例,肿瘤骨转移24例（39.3%）。结论99Tcm-MDP SPECT/CT同机融合骨显像,对常规全身骨显像单发阳性病灶提供了准确的定位,同时显示了该病灶的形态及周围软组织影像特征,显著降低了骨显像中椎体单发阳性病灶的假阳性率,在脊柱单发阳性病灶的鉴别诊断中较常规全身骨显像具有更高的临床诊断价值。     

SPECT/CT断层融合显像在分化型甲状腺癌转移灶诊断中的临床价值

目的 探讨131I-SPECT/CT断层融合显像技术在分化型甲状腺癌（DTC）转移灶定性、定位诊断中的临床价值.方法 选择69例确诊DTC患者,甲状腺全切或次全切术后,口服碘化钠（131I）治疗剂量3.70～7.40 GBq后5～7d,行全身平面显像（131 I-WBS）,随后在同一床位进行SPECT断层扫描和CT扫描,扫描结束后进行图像融合处理.检查结果与病理或其他影像学检查以及临床随访结果对比,分析确定DTC转移灶的定性、定位诊断,并做对比分析.结果 69例患者中,临床证实转移灶共计186处;平面显像170处、融合显像179处发现异常摄碘浓聚灶;其中平面显像有160处,融合显像有174处与病理、螺旋CT、MRl以及超声等检查结果一致,其诊断灵敏度分别为86％ （160/186）、93.5％ （174/186）,定性、定位准确性分别为81.6％ （160/196）、91.1％ （174/191）;两种方法的诊断灵敏度差异有统计学意义（x2=5.74,P＜0.05）,定性、定位准确性差异也有统计学意义（x2=7.33,P＜0.01）.结论 131I-SPECT/CT断层融合显像能够精准的定性、定位DTC的复发和转移,克服污染灶、组织重叠等因素的影响,较平面显像具有更高的灵敏度和准确性,用于DTC患者的临床分期、疗效和治疗方案的制定,具有重要的临床价值.     

甲状腺癌转移灶失分化影响因素分析

目的：分化型甲状腺癌（DTC）转移灶失分化的患者预后较差。本文研究DTC转移灶的影响因素。方法：回顾性分析在我科行131I治疗有转移的DTC患者121例。转移灶通过18F-FDG肿瘤显像、131I-SPECT/CT、CT、MRI、B超等影像学手段结合血清HTg诊断,部分通过手术病理证实。转移灶摄碘情况通过大剂量131I治疗后全身显像上观察。根据转移灶摄碘情况将患者分为摄碘组和不摄碘组（失分化组）,分析相关影响因素。结果：51例（42.1%）患者转移灶不摄碘。单因素分析提示,淋巴结转移灶较远处转移更容易发生失分化（χ2=4.338,P〈0.05）,而肺转移和骨转移之间无明显差异（χ2=1.509,P〉0.05）。双变量logistic回归模型提示导致转移灶不摄碘的危险因素有：乳头状癌（OR=0.059;95%CI 0.010,0.037;P〈0.01）、年龄（OR=1.050;95%CI 1.019,1.082;P〈0.01）、转移发生时间（OR=4.122;95%CI 1.421,11.894;P=0.000）和复发（OR=4.299;95%CI 2.132,7.685,P=0.000）。结论：DTC患者中淋巴结转移灶较远处更容易发生失分化不摄碘,但是远处转移中肺转移和骨转移发生失分化的几率无明显差异。年龄、乳头状癌、转移发生时间和复发是影响失分化的危险因素。     

核素显像联合血清Tg检测在甲状腺癌治疗后随访中的价值

目的探讨131I全身显像、甲状腺球蛋白检测、99Tcm-MIBI显像在分化型甲状腺癌(DTC)131I治疗后的随访价值。方法对260例DTC患者行甲状腺切除术并经131I清甲治疗后进行随访。DTC患者停用甲状腺素4周后检测甲状腺球蛋白(Tg),服用诊断剂量131I 185MBq(5mCi),于次日行131I全身显像(131I-WBS),分析Tg检测结果与131I-WBS的相关性;对Tg阳性而131I-WBS阴性的病人行99Tcm-MIBI显像,分析99Tcm-MIBI显像对于DTC患者的随访价值。结果 260例DTC患者中经过取样活检证实出现复发或转移者42例。其中Tg阳性患者40例,阴性2例,131I-WBS阳性患者36例,阴性患者6例;在40例Tg阳性患者中,131I-WBS阳性患者35例,其131I-WBS阳性检出率与复发或转移者的总阳性检出率没有统计学差异(P>0.05)。有5例Tg阳性而131I-WBS阴性的患者进一步做99Tcm-MIBI显像检查,有4例检出阳性病灶。结论 DTC患者清甲术后,Tg检测结果与131I-WBS结果有明显的相关性,无论何种检查出现异常,都提示体内存在肿瘤转移灶的可能性;当DTC患者清甲治疗后Tg阳性而131I-WBS阴性时,99Tcm-MIBI显像有助于转移灶的检出,是131I-WBS有益的补充。     

肿瘤标志物检测联合18F-FDG符合线路显像鉴别肺良恶性病变的临床价值

目的：探讨肿瘤标志物检测联合^18F-FDG符合线路显像对鉴别肺良恶性病变的价值。方法：对62例肺良恶性病变患者行^18F-FDG SPECT肿瘤代谢显像及肿瘤标志物癌胚抗原（CEA）、糖类抗原50（CA50）、糖类抗原199（CA199）、糖类抗原242（CA242）检测,分别计算^18F-FDG符合线路显像、肿瘤标志物CEA、CA50、CA199、CA242及^18F-FDG符合线路显像与肿瘤标志物联合检测诊断肺恶性病变的灵敏度、特异性、准确性。结果：^18F-FDG符合线路显像对肺恶性病变诊断的灵敏度、特异性、准确性分别为85．7（30／35）、59．3（16／27）、74．2（46／62）。单项血清肿瘤标志物CEA、CA199、CA50、CA242检测对肺恶性病变诊断的灵敏度、特异性、准确性分别为22．9（8／35）、92．6（25／27）、59．7（33／62）、14．3（5／35）、100（27／27）、51．6（32／62）、34．3（12／35）、85．2（23／27）、56．5（35／62）、28．6（10／35）、85．2（23／27）、53．2（33／62）,血清肿瘤标志物联检对肺恶性病变诊断的灵敏度、特异性、准确性分别为48．6（17／35）、81．5（22／27）、62．9（39／62）,血清肘,瘤标志物与FDG代谢显像联俭对肺恶性病变诊断的灵敏度、特异性、准确性分别为88．6（31／35）、85．2（23／27）、87,1（54／62）。结论：^18F-FDG符合线路显像与肿瘤标志物联合检测诊断肺恶性病变的灵敏度、特异性、准确性均较高,对鉴别肺良恶性病变具有重要的临床应用价值。     

18F-FDG-PET in the follow-up of thyroid cancer

Differentiated thyroid cancer is a rare tumour with an incidence of 4 - 9/100,000/year. For preoperative assessment of thyroid nodules, ultrasonography (US) and US-guided fine needle aspiration biopsy are the methods of choice to detect thyroid cancer. The value of preoperative fluorine-18 fluorodeoxyglucose positron emission tomography (18F-FDG-PET) in differentiating malignant from benign nodules, especially in cases of follicular proliferation, has not yet been evaluated. After thyroidectomy and radioiodine remnant ablation, several methods are used to follow patients with differentiated thyroid cancer, including serum thyroglobulin, ultrasonography of the neck, iodine-131 (131I) whole body scintigraphy (WBS) and scintigraphy with nonspecific tracers such as technetium-99 m ((99m)Tc) Tetrofosmin or Sestamibi. Whereas the specificity of 131I-WBS is high, sensitivity is low, especially if one takes into account that only two-thirds of recurrences or metastases store iodine. With the introduction of 18F-FDG in oncology, it is also used for the detection of local recurrences and metastases of differentiated thyroid cancer. Elevated thyroglobulin but negative 131I-WBS belongs to the 1a indications for 18F-FDG-PET in oncology according to the German Consensus Conference 2000. The sensitivity for detecting 131I-negative metastases with 18F-FDG-PET can be increased by elevated thyroid-stimulating hormone (TSH) after withdrawal of thyroid hormone therapy or after intramuscular injection of recombinant TSH. Most of the 131I-negative metastases demonstrate 18F-FDG uptake, which represents rapid tumour growth and poor differentiation, whereas most of the 131I-positive metastases are 18F-FDG negative. The combination of 131I-WBS and 18F-FDG-PET leads to an increase in the detection rate to more than 90 - 95 % in cases of elevated thyroglobulin, because well- and less-differentiated cancer cells may be present in one patient. In rare cases, a recurrent tumour or metastasis may accumulate 131I as well as 18F-FDG. In these patients, it may be possible that well- and less-differentiated cells are present in one metastasis. The early use of 18F-FDG-PET in patients with elevated thyroglobulin, especially in the case of negative 131I-WBS, changes the therapeutic strategy in up to half of the patients (surgery, external radiation).     

25例肝癌术后患者18F-FDG SPECT/CT同机融合显像分析

目的:探讨^18F-FDG SPECT／CT同机融合显像在探测原发性肝癌术后疑复发中的价值。方法:对25例肝癌术后疑复发患者进行^18F-FDGSPECT／CT符合线路显像，经迭代法处理和重建，获得经衰减校正后的断层图像和融合图像，以目测双盲进行诊断分析，并与CT(MR)及手术病理检查、临床随访作出的最后诊断结果进行对比。结果:同机融合显像和CT(MR)对肝癌术后复发诊断的灵敏度、特异性及准确性分别为94．7％、100％、96％和78．9％、66．7％、76％。结论:FDG显像对肝癌术后复发及转移的定性诊断具有较高的灵敏度和准确性；SPECT／CT同机融合显像能准确定位复发病灶的解剖和功能信息。     

Evaluation of the clinical value of bone metabolic parameters for the screening of osseous metastases compared to bone scintigraphy

Background

Bone metastases are common in many types of cancer. As screening methods different imaging modalities are available. A new approach for the screening of osseous metastases represents the measurement of bone metabolic markers. Therefore aim of this study was to evaluate the usefulness of the determination of bone metabolic markers aminoterminal propeptide of type I procollagen (PINP, osteoblastic activity) and the carboxyterminal pyridinoline cross-linked telopeptide of type I collagen (ICTP, osteoclastic activity) for the detection of bone metastases associated with other malignancies.

Methods

88 patients aged 21 – 82 years with malignant tumors were prospectively studied. The serum concentrations of PINP and ICTP were measured and compared to the results of bone scintigraphy, radiological bone series, CT, MRI and clinical follow-up.

Results

Osseous metastases were found in 21 patients. 19 of them were correctly identified by bone scintigraphy (sensitivity: 90%). For bone metabolic markers results were as follows: ICTP sensitivity: 71%, specificity: 42%; PINP sensitivity: 24%, specificity: 96%.

Conclusions

As markers of bone metabolism PINP and ICTP showed low sensitivity and/or specificity for the detection of osseous metastases. The presented markers did not seem to be sufficient enough to identify patients with bone metastases or to replace established screening methods.     

Intérêt du dosage de la désoxypyridinoline urinaire dans le dépistage des métastases osseuses du mélanome

Urinary deoxypyridinoline as a marquer of bone metastases in patients with melanoma. We measured urinary deoxypyridinoline (DPD) in 168 melanoma bearing patients, by an chemiluminescence immunoassay. The results were expressed as ratio to creatinine (DPD/Cr in nmol/mmol). The patients were distributed in five groups: patients without any detectable metastases, patients with cutaneous metastases, with lymph nodes metastases, with visceral or bone metastases. The control group included 40 healthy volunteers. We calculated reference values and means of level DPD/Cr in each group. The mean DPD/Creatinine was significantly higher for women with bone metastases than for the control group (respectely 16.7 nmol/nmol and 4.96 nmol/mmol (p = 0.003)) with a sensitivity of 62 % and a specificity of 98 %. We determinated a cutoff level at 15 nmol/mmol. However, no significantly inter group difference was observed for men. Measurement of urinary DPD is not superior to bone scintigraphy in the early detection of bone metastases, but may provide an useful alternative tool to bone scintigraphy for diagnosis of bone metastases.     

18F-FDG PET/CT盆部延迟显像在原发性膀胱癌诊断和局部分期中的临床价值

目的观察18F-FDG PET/CT盆部延迟显像在原发性膀胱癌的诊断和局部分期中的价值。方法 27例疑似膀胱癌患者,术前均行增强CT及18F-FDG PET/CT常规加盆部延迟显像进行诊断和分期,以手术病理结果作为金标准,观察盆部延迟显像在原发性膀胱癌诊断和局部分期上的价值,并与增强CT作比较。结果 27例患者中,增强CT、盆部延迟显像诊断原发肿瘤的灵敏度分别为77.27%、90.90%;特异度分别为60.00%、40.00%;准确度分别为74.07%、81.48%;盆部延迟显像和增强CT诊断准确度比较无统计学差异（P=0.263）。12例患者接受了膀胱癌根治术,其中10例有盆腔淋巴结或邻近组织转移,增强CT、盆部延迟显像局部分期准确度分别为33.33%、91.67%,盆部延迟显像优于增强CT（P=0.018）。结论18F-FDG PET/CT盆部延迟显像在原发性膀胱癌的诊断上与增强CT具有同等价值,局部分期准确度优于增强CT,具有更高的临床价值。     

90例舌癌术后患者18F-FDG符合线路显像研究及预后分析

目的 探讨舌癌术后患者的18F-FDG符合线路显像结果并分析舌癌预后的危险因素.方法 90例行手术切除并经病理诊断为舌癌的患者均在手术治疗≥3月之后行18F-FDG符合线路显像,计算符合线路显像对舌癌术后复发和（或）转移的诊断效能.舌癌预后分析中,采用Kaplan-Meier法计算生存率,Logrank检验法进行单因素预后分析,Cox回归模型及逐步回归向后最大似然法进行多因素预后分析.结果 18F-FDG符合线路显像对舌癌术后复发和（或）转移的诊断灵敏度、特异度、准确度、阳性预测值和阴性预测值分别为95.1％ （58/61）、69.0％（20/29）、86.7％（78/90）、86.6％（58/67）、87.0％（20/23）.在34例舌癌术后复发患者中,复发部位以舌体（32.4％,11/34）最为多见.在40例舌癌术后转移患者中,主要为淋巴结转移（65.1％,41/63）,其次为肺转移（27.0％,17/63）、骨骼（6.3％,4/63）转移.90例舌癌术后患者的总体1年生存率为82.5％,3年生存率为54.7％,5年生存率为52.9％.单因素预后分析显示,舌癌术后生存率与TNM临床分期、病理分化等级、早期淋巴结转移、局部复发及远处转移相关（χ2=26.282、9.629、9.629、9.442和4.928,P均＜0.05）.多因素预后分析显示,舌癌术后的预后危险因素为TNM临床分期、病理分化等级、早期淋巴结转移、局部复发、延迟淋巴结转移及远处转移（Wald值=9.855、6.585、5.042、6.271、4.354和5.134,P均＜0.05）.结论 18F-FDG符合线路显像在舌癌术后监测及预后评估中为一种有效的无创性检查方法.     

18 F-FDG PET/CT显像联合血清肿瘤标志物检测在肺单发结节诊断中的价值

目的 探讨18F-FDG PET/CT显像和血清肿瘤标志物(CEA、NSE、CFRA21-1)检测联合在肺单发结节诊断中的价值.方法 91例经病理确诊的肺单发结节患者进行18F-FDG PET/CT显像,同时取静脉血4mL分离取血清在低温冰箱保存,用放免法集中测量血肿瘤标志物CEA、NSE、CFRA21-1.结果 18 F-FDG PET/CT检查对肺单发结节恶性肿瘤检出的灵敏度为84.8%(56/66),对肺单发结节诊断的准确率为86.8%(79/91);18 F-FDG PET/CT显像联合血肿瘤标志物(CEA+NSE+CFRA21-1)检测对肺单发结节恶性肿瘤检出的灵敏度为93.9%(62/66),对肺单发结节诊断的准确率为95.6%(87/91),和18F-FDG PET/CT检查相比,灵敏度和准确率差异具有统计学意义(P均﹤0.05).结论 18 F-FDG PET/CT显像和血肿瘤标志物(CEA、NSE、CFRA21-1)检测联合能提高对肺单发结节诊断的灵敏度和准确性,有较高的临床应用价值.     

Bone histology at autopsy and matched bone scintigraphy findings in patients with hormone refractory prostate cancer: the effect of bisphosphonate therapy on bone scintigraphy results

Bisphosphonates (BisP) are non-metabolized compounds with high bone affinity used in bone metastasis diagnosis and treatment. Currently, BisP are used to treat hypercalcemia of malignancy as well as to prevent, minimize, or delay skeletal morbidity. These compounds have a long half-life in bone. Thus long-term BisP treatment might saturate bone and interfere with a single-dose scanning agent used for bone scintigraphy when visualizing bone metastases. In an effort to answer this question, this study evaluated the concordance of histology and Technetium⁹⁹ methylene diophosphonate (Tc⁹⁹ MDP) bone scintigraphy in the diagnosis of bone metastases in prostate cancer patients. We assessed the concordance of findings between bone scintigraphy and histology using 188 bone biopsies from 11 autopsied patients who died with metastatic prostate cancer, 5 of whom were treated with pamidronate for 2 to 13 months before death. Overall agreement between histology and bone scintigraphy was 84%, 86% in non-pamidronate-treated patients and 82% in pamidronate-treated patients. Scintigraphic bone metastases without histological metastasis (false negatives = 12.7%) were observed in 24 anatomic locations; half of these were in one patient who had been treated with pamidronate and had no histological bone response to the carcinoma. There were only 4 sites where a positive bone scan was not associated with histologic metastasis (false positives = 2.21%). There was no statistical difference between the treated and non-treated group for concordance, specificity, sensitivity, positive and negative predictive values of bone scintigraphy and prevalence of histological abnormality. Long-term pamidronate treatment of prostate cancer bone metastases does not generally affect the ability to detect bone metastases with Tc⁹⁹ MDP bone scintigraphy. This revised version was published online in July 2006 with corrections to the Cover Date.