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Dießl S, Verburg F, Biko J, Schryen B, Reiners C, Buck A, Hänscheid H. Improved follow-up of patients with differentiated thyroid carcinoma. Nuklearmedizin 2017; 52:81-7. [DOI: 10.3413/nukmed-0525-12-08] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 02/04/2013] [Indexed: 11/20/2022]
Abstract
SummaryAim: Physicians typically are unaware of the radioiodine uptake (RIU) detection limit (LoD) on scintigrams of differentiated thyroid carcinoma (DTC) patients. We evaluated a novel method to determine LoD as a quantitative upper limit for RIU in negative scans and as a value to contextualize faint visible uptake. Patients, methods: To test whether LoD is related to physicians’ ratings, RIU and LoD were calculated from scintigraphic count statistics for 120 static planar neck scans and were compared with the ratings of five nuclear medicine specialists blinded to patient/ scan characteristics regarding visible cervical uptake. Scans were acquired on days 1 (d1) and 2 (d2) post-administration of 298 ± 30 MBq iodine-131 in 60 consecutive DTC patients after recombinant human thyrotropin (rhTSH) or thyroid hormone withdrawal (THW) (n = 30 each). Results: Indicating good inter-observer agreement, ≥ 4 readers concurred regarding 56 (93.3%) [54 (90.0%)] d1[d2] scans. Seventeen scans from 12 patients received ≥ 3 positive votes; in 15 (88.2%), RIU exceeded LoD. RIU assessed from regions-of-interest over former thyroid beds in scans with ≤ 2 positive votes was typically below the LoD (99/103 scans, 96.1%). In 48 patients with ≤ 2 positive votes in both scans, LoD was a median 0.0094% (0.0050%) in d1(d2) images and was significantly lower (p < 0.01) on early or late scans in 22 euthyroid rhTSH patients versus 26 hypo thyroid THW patients. Conclusion: LoD data obtained by the proposed method closely reflect nuclear medicine specialists’ scan ratings and provide comparators in serial scintigrams, improving diagnostic 131I imaging accuracy in differentiated thyroid carcinoma.
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Treglia G, Ceriani L, Verburg F, Giovanella L. Detectable thyroglobulin with negative imaging in differentiated thyroid cancer patients. Nuklearmedizin 2014; 53:1-10. [DOI: 10.3413/nukmed-0618-13-08] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 11/26/2013] [Indexed: 11/20/2022]
Abstract
SummaryIn the absence of autoantibodies against thyroglobulin (Tg), Tg measurement nowadays is the cornerstone of clinical management of differentiated thyroid cancer patients. DTC patients presenting with a positive Tg measurement without an anatomical correlate on anatomic imaging provide a management challenge to the attending physician.Based on the literature we will provide an overview of the most important steps to undertake in such patients and their potential clinical consequences.
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Verburg F, Reiners C, Grelle I, Barth H, Fassnacht M, Luster M. Calcium Stimulated Calcitonin Measurement: A Procedural Proposal. Exp Clin Endocrinol Diabetes 2013; 121:318-20. [DOI: 10.1055/s-0033-1333686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- F. Verburg
- Departments of Nuclear Medicine, University of Würzburg, Würzburg, Germany
| | - C. Reiners
- Departments of Nuclear Medicine, University of Würzburg, Würzburg, Germany
| | - I. Grelle
- Departments of Nuclear Medicine, University of Würzburg, Würzburg, Germany
| | - H. Barth
- Institute for Pharmacology and Toxicology, University of Ulm, Ulm, Germany
| | - M. Fassnacht
- Departments of Internal Medicine I and Endocrine unit, University of Würzburg, Würzburg, Germany
| | - M. Luster
- Department of Nuclear Medicine, University of Ulm, Ulm, Germany
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Verburg F, Weber T, Luster M. ¹³¹I sodium-iodide versus ⁵⁶Fe surgical steel. Which is better for lateral lymph node metastases in differentiated thyroid cancer patients? Nuklearmedizin 2013; 52:113-114. [PMID: 23928980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
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Acutis PL, Sbaiz L, Verburg F, Riina MV, Ru G, Moda G, Caramelli M, Bossers A. Low frequency of the scrapie resistance-associated allele and presence of lysine-171 allele of the prion protein gene in Italian Biellese ovine breed. J Gen Virol 2004; 85:3165-3172. [PMID: 15448380 DOI: 10.1099/vir.0.80053-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Frequencies of polymorphisms at codons 136, 154 and 171 of the prion protein (PrP) gene were studied in 1207 pure-bred and cross-bred Italian Biellese rams, a small ovine breed of about 65 000 head in Italy. Aside from the five most common alleles (VRQ, ARQ, ARR, AHQ and ARH), the rare ARK allele was also found, with the highest frequency reported so far in an ovine breed (2·5 %). ARK/--- genotypes had a total frequency of 4·9 %. The resistance-associated ARR allele was seen at a low frequency (8·3 %). Only 1·4 % of animals examined had a resistant ARR/ARR PrP genotype. Semi-resistant (ARR/ARQ, ARR/ARH and ARR/AHQ) PrP genotypes had a total frequency of 12·6 % and PrP genotypes that are associated with high scrapie susceptibility (e.g. VRQ/VRQ and ARQ/ARQ) had a total frequency of 81·1 %. Statistical analysis comparing PrP allele frequencies between pure-bred and cross-bred animals showed that the ARR allele occurred at a significantly lower frequency in pure-bred rams. Furthermore, comparison of PrP allele frequencies between pure-bred rams over 18 months of age and those below 18 months of age showed a significant decrease in the ARR allele in breeding rams over 18 months of age. Based on these results, breeding for scrapie resistance in the Biellese breed will have to take into account the low frequency of the ARR allele, which also seems to be subject to negative selection by farmers. Further investigation is required to understand whether the ARK allele is also associated with resistance to transmissible spongiform encephalopathies.
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Affiliation(s)
- P L Acutis
- CEA (Centro di referenza per le Encefalopatie Animali), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154 Turin, Italy
| | - L Sbaiz
- CEA (Centro di referenza per le Encefalopatie Animali), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154 Turin, Italy
| | - F Verburg
- Central Institute for Animal Disease Control (CIDC-Lelystad), PO Box 2004, 8203 AA Lelystad, the Netherlands
| | - M V Riina
- CEA (Centro di referenza per le Encefalopatie Animali), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154 Turin, Italy
| | - G Ru
- CEA (Centro di referenza per le Encefalopatie Animali), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154 Turin, Italy
| | - G Moda
- Regione Piemonte, Direzione di Sanità Pubblica, Corso Stati Uniti 1, 10128 Turin, Italy
| | - M Caramelli
- CEA (Centro di referenza per le Encefalopatie Animali), Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154 Turin, Italy
| | - A Bossers
- Central Institute for Animal Disease Control (CIDC-Lelystad), PO Box 2004, 8203 AA Lelystad, the Netherlands
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