A Gimelli, P Marzullo, M Bartoli, G Sambuceti, A Giorgetti, O Parodi
{"title":"Ischemia on effort is not a determinant of stunned myocardium in man: a radioisotopic study based on quantitative evaluation of ventricular dynamics.","authors":"A Gimelli, P Marzullo, M Bartoli, G Sambuceti, A Giorgetti, O Parodi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>To assess whether myocardial stunning occurs following brief episodes of effort ischemia, ventricular function was assessed by radionuclide angiography in 29 patients with coronary artery disease. No patient had evidence of previous myocardial infarction. Patients were divided into two groups according to presence of single (14 patients, Group 1) or multi-vessel (15 patients, Group 2) coronary artery disease. Equilibrium radionuclide angiocardiography was performed in the left anterior oblique projection by a small field-of-view gamma-camera. Acquisition were performed at baseline, at peak exercise, then again at 1 and 5 minutes of the recovery phase. For each acquisition, ejection fraction, peak filling rate and wall motion index were measured and compared. No difference in baseline and stress measurements was found between Group 1 and Group 2, except for the wall motion index that was more impaired during ischemia in patients of Group 2. Global and regional indexes of ventricular function did not show significant differences also in the two recovery periods when compared to the relative baseline values. Transient ischemia caused by an increase of oxygen demand did not reproduce the phenomenon of systolic and diastolic stunning observed in animal experiments, although in all patients the ischemia was of sufficient duration and severity to induce transient ventricular dysfunction.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 3","pages":"119-25"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19208670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of CEA, TPA, CA 15-3, CA 549 and TPS in the monitoring of metastatic breast cancer.","authors":"A Nicolini, M Ferdeghini, C Colizzi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Monitoring the response to treatment in relapsed breast cancer patients is one of the chief uses of tumor markers. Thus far the carcinoembryonic antigen (CEA)-tissue polypeptide antigen (TPA)-breast cancer associated antigen 115 D8/DF3 (CA 15-3) association has been routinely used to follow-up breast cancer patients. We have found that TPA reflects the response to treatment much better than CEA and slightly better than CA 15-3. Recently carcinoma associated antigen 549 (CA 549) and tissue polypeptide specific antigen (TPS) have been reported to be highly sensitive tumor markers for breast cancer. TPS is claimed to be particularly suitable for monitoring the response to treatment because of its more specific assessment of proliferation activity. Therefore, in 13 relapsed patients with prolonged follow-up and detailed clinical-instrumental information, the mean percentage of samples with high CEA, TPA, and CA 15-3 values and their expressions were compared with those of CA 549 and TPS. All markers were also evaluated in terms of their correspondence with the evolution of disease. The correspondence with clinical-instrumental behaviour was scored absent (0), poor (1), good (2) and very good (3) by three different observers. Other more suitable associations than those already used were also investigated. It was found that CA 15-3 and CA 549 were expressed more often (92%) than TPS (85%), TPA (60%) and CEA (46%).(ABSTRACT TRUNCATED AT 250 WORDS)</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 3","pages":"126-33"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19208671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H B Sayman, K Sönmezoglu, M Ayaz, N Kahraman, T Kapicioglu, I Urgancioglu
{"title":"Functional evaluation of renal transplants with scintigraphy.","authors":"H B Sayman, K Sönmezoglu, M Ayaz, N Kahraman, T Kapicioglu, I Urgancioglu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A variety of techniques have been employed to assess renal function and its evolution after transplant surgery. Since initial perfusion studies are easy to perform, one may be tempted to rely on 99mTc-diethylenetriaminepentaacetic acid (DTPA) scanning alone. Some discrepancies have been observed between perfusion studies and clinical outcome of the renal transplant patients however. We therefore decided to evaluate both 99mTc-DTPA and 131I-hippuran renal scanning in 28 renal transplant patients. Sixty 99mTc-DTPA perfusion and 131I hippuran scintigraphies were performed using a same-day protocol. The examinations were repeated in 14 patients at weekly or monthly intervals to monitor the clinical trend of these patients. The results of this study indicate that, for early detection of the kidney problems, 131I-hippuran scintigraphy was superior to 99mTc-DTPA perfusion scans, but for the proper clinical management of renal transplant patients, both procedures should be utilized.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 3","pages":"115-8"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19208669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E Turba, G Fagioli, A F Mancini, P Rosito, A Galli, P Alvisi
{"title":"Evaluation of stage 4 neuroblastoma patients by means of MIBG and 99mTc-MDP scintigraphy.","authors":"E Turba, G Fagioli, A F Mancini, P Rosito, A Galli, P Alvisi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In a group of 22 patients with a stage 4 neuroblastoma, MIBG and 99mTc-MDP scintigraphy and radiological skeletal survey were performed at diagnosis to assess the presence of metastatic skeletal disease. In 20 out of 22 patients the MIBG scan was repeated during follow-up at a time when maximum tumoral regression was expected, i.e. after 3-4 cycles of chemotherapy; scan results were correlated to clinical and laboratory data. At diagnosis MIBG scan showed bone involvement in 19/22 patients, 99mTc-MDP in 20/22 and radiological skeletal survey in 11/22. In 1 patient only marrow aspirate revealed diffusion of disease beyond the primitive lesion. A total of 117/161 (72%) bone lesions were detected by MIBG, 89/161 (55%) by 99mTc-MDP and 47/161 (29%) by radiological skeletal survey. MIBG scintigraphy revealed bone marrow involvement in 11/22 patients in whom either marrow aspirate or bone biopsy were positive. In 5 patients 14 soft tissue lesions were also discovered and all but one primitive lesion accumulated MIBG. Although MIBG scan detected a greater number of bone lesions than 99mTc-MDP, in two patients in whom MIBG scan was negative 99mTc-MDP revealed the presence of bone involvement. Therefore we conclude that 99mTc-MDP scan is necessary to fully assess bone involvement in neuroblastoma at diagnosis. When MIBG scan was repeated after chemotherapy there was a general reduction of the number of detected lesions and in 8/17 patients both bone metastases and marrow involvement could no longer be detected.(ABSTRACT TRUNCATED AT 250 WORDS)</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 3","pages":"107-14"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19208084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M N Courel, N Girard, J Chomant, J C Liehn, B Delpech
{"title":"111In-hyaluronectin, a new probe for radiodetection of tumours: biodistribution and imaging in grafted mice.","authors":"M N Courel, N Girard, J Chomant, J C Liehn, B Delpech","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Hyaluronectin (HN), a glycoprotein which shows a strong specific affinity for Hyaluronic Acid (HA), a very high molecular weight glycosaminoglycan expressed in the stroma reaction of all tumours, was used to radiolocalize grafted autologous carcinomas (CB33 and CB03) in mice. After conjugation to DTPA (0.5-3.7 DTPA/HN) and radiolabelling with 111In (5 microCi/micrograms HN) HN retained 93% of its affinity for HA. Different preparations of HN purified from lamb brain were assayed. The best results were obtained when the HN molecules reactive with HA were selected by gel permeation to discard unreactive molecules which were unable to complex with HA. At 48 hours the tumour to blood ratio was 7.7 with a localization index of 2.2 in CB33; there was 2.8% uptake of the injected dose (ID) into CB33 and 1.6% into CB03. 111In-HN uptake per gram of tumour was tumour-size dependent: the smaller masses had the higher uptake. Tumours were visualized and either early images of 111In-HN distribution or simultaneous distribution images of 99mTc-phytate or 201Tl-DTPA were used for the subtraction treatments.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 2","pages":"88-96"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18693540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Detection efficiency of different bone SPECT processing protocols for the diagnosis of \"spina bifida\".","authors":"I Gunes, I Sarikaya, T Ozkan, T Akbunar","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Bone SPECT is a very important diagnostic tool for the detection of metabolically active lesions, with good anatomical resolution. It is highly technique-dependent however, and the reports about the role of bone SPECT in diagnosing hypoactive lesions are very limited. In order to determine its diagnostic value, we investigated 18 pediatric spina bifida cases with bone SPECT using different processing and displaying methods. The results were evaluated on a 1 to 5 point scale. Although it was not a very effective procedure for small hypoactive bony lesions, we concluded that the processing method using a Butterworth filter, a cut-off frequency 0.50 cycle/cm and a logarithmic gray scale displaying detects bone lesion more efficiently than the Hanning filter with a linear gray scale. The difference between the values produced using the two methods was significant (p < 0.005).</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 2","pages":"49-52"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19359289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F Crippa, E Seregni, R Agresti, E Bombardieri, G L Buraggi
{"title":"Bone scintigraphy in breast cancer: a ten-year follow-up study.","authors":"F Crippa, E Seregni, R Agresti, E Bombardieri, G L Buraggi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two-hundred and sixty patients with T2-T3a, pN1, M0 (TNM classification) breast cancer underwent clinical and instrumental follow-up (mean 122 months) including periodic bone scintigraphy. A total of 1971 scintigraphic examinations were performed (range 3 to 15 scintigraphies/patient, mean 8). The results of scintigraphy were compared to standard radiographs and to the clinical history of the patients. Bone metastases occurred in 71% of 122 patients who suffered from tumor recurrence during the study. Bone lesions (alone or associated with other tumor lesions) represented the most common site (42%) of first tumor relapse and occurred as first site of distant metastases in 11% of 29 patients with locoregional relapse. Bone metastases were symptomatic in 41% of cases. The sensitivity and specificity of bone scintigraphy were 98% and 95%, respectively; the positive and negative predictive values were 73% and 100%; the accuracy was 96%. Scintigraphic false positive results occurred particularly in the skull and in the ribs and generally when the examination detected less than three focal abnormalities. This study demonstrates that the number of positive scintigraphies during follow-up increases over the years, reaching a plateau only at approximately 8-10 years. It is therefore not advisable to stop performing bone scintigraphies after the first years of follow-up as this may lead to the loss of important information.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 2","pages":"57-61"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19359848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M Salvatori, V Rufini, S M Corsello, I Saletnich, C A Rota, A Barbarino, L Troncone
{"title":"Thyrotoxicosis due to ectopic retrotracheal adenoma treated with radioiodine.","authors":"M Salvatori, V Rufini, S M Corsello, I Saletnich, C A Rota, A Barbarino, L Troncone","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Ectopic thyroid tissue is rarely found in the cervical retrotracheal region and its functional autonomy with suppression of the normal gland can be considered unusual. We report a case of thyrotoxicosis in a patient who had no palpable goitre in the neck but was found to have a solitary toxic thyroid nodule behind the trachea. US and CT scanning confirmed that the nodule was retrotracheal and apparently was not continuous or contiguous with the normal thyroid gland. The toxic adenoma showed avid uptake of iodine-131 (131I), and using thallium-201-chloride (201Tl)-SPECT the normal thyroid gland together with the retrotracheal autonomous nodule was demonstrated. The patient underwent radiometabolic therapy with 666 MBq of 131I and a 131I scan performed 6 months later showed only the previously suppressed normal thyroid gland.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 2","pages":"69-72"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19359849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A Clerico, M G Del Chicca, G C Zucchelli, L Salutini, A Mercuri, M Scarlattini
{"title":"Performance of a fully automated fluorometric enzyme immunoassay for serum myoglobin measurement.","authors":"A Clerico, M G Del Chicca, G C Zucchelli, L Salutini, A Mercuri, M Scarlattini","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An automated fluorometric enzyme immunoassay system for the determination of serum myoglobin has been recently developed. This method is based on the sandwich immunoassay and uses two mouse monoclonal antimyoglobin antibodies; the first one is complexed onto glass fiber paper and the second is conjugated to an enzyme alkaline phosphatase which reacts with the substrate 4-methylumbelliferyl phosphate to generate a fluorescent product. Using a dedicated automated apparatus the time to the first result is eight minutes, with additional values being produced at one-minute intervals (about 50 samples/hour). We compared the analytical performance of this fluorometric enzyme immunoassay with that of a RIA set up in our laboratory for the routine assay of serum myoglobin. The automated fluorometric enzyme immunoassay showed lower between-assay variability (CV = 4.7% vs 13.8%) and higher sensitivity (0.3 ng/mL vs 7.2 ng/mL) than the manual RIA. Moreover, the two immunoassays gave similar results when serum samples of normal subjects and patients with coronary artery disease with or without acute myocardial infarction (AMI) were assayed (fluorometric immunoassay = -0.7 + 0.851 RIA, r = 0.991, n = 137). In conclusion, the automated fluorometric enzyme immunoassay tested in the present study produces reliable clinical results with a rapid turnaround time and therefore can be recommended for use in the early detection of AMI in a laboratory of Coronary Care Unit.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 2","pages":"83-7"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19359852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E Vergara, S Lastoria, P Varrella, L Lapenta, M Salvatore
{"title":"Technetium-99m-pentavalent dimercaptosuccinic acid uptake in Hurthle cell tumor of the thyroid.","authors":"E Vergara, S Lastoria, P Varrella, L Lapenta, M Salvatore","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In a patient with metastatic Hurthle cell carcinoma of the thyroid, a subgroup of follicular carcinoma, scintigraphy with pentavalent 99mTc-labeled dimercaptosuccinic acid (V)DMSA showed a significant uptake of the radiopharmaceutical in all tumor sites. We suggest that the accumulation of 99mTc-(V)DMSA within metastases of Hurthle cell thyroid tumor may have a useful role in the staging of these patients, especially when radioiodine fails to concentrate.</p>","PeriodicalId":77217,"journal":{"name":"Journal of nuclear biology and medicine (Turin, Italy : 1991)","volume":"37 2","pages":"65-8"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19381643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}