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Kersting D, Jentzen W, Sraieb M, Costa PF, Conti M, Umutlu L, Antoch G, Nader M, Herrmann K, Fendler WP, Rischpler C, Weber M. Comparing lesion detection efficacy and image quality across different PET system generations to optimize the iodine-124 PET protocol for recurrent thyroid cancer. EJNMMI Phys 2021; 8:14. [PMID: 33587222 PMCID: PMC7884562 DOI: 10.1186/s40658-021-00361-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/28/2021] [Indexed: 12/13/2022] Open
Abstract
Background In recurrent differentiated thyroid cancer patients, detectability in 124I PET is limited for lesions with low radioiodine uptake. We assess the improvements in lesion detectability and image quality between three generations of PET scanners with different detector technologies. The results are used to suggest an optimized protocol. Methods Datasets of 10 patients with low increasing thyroglobulin or thyroglobulin antibody levels after total thyroidectomy and radioiodine therapies were included. PET data were acquired and reconstructed on a Biograph mCT PET/CT (whole-body, 4-min acquisition time per bed position; OSEM, OSEM-TOF, OSEM-TOF+PSF), a non-TOF Biograph mMR PET/MR (neck region, 4 min and 20 min; OSEM), and a new generation Biograph Vision PET/CT (whole-body, 4 min; OSEM, OSEM-TOF, OSEM-TOF+PSF). The 20-min image on the mMR was used as reference to calculate the detection efficacy in the neck region. Image quality was rated on a 5-point scale. Results All detected lesions were in the neck region. Detection efficacy was 8/9 (Vision OSEM-TOF and OSEM-TOF+PSF), 4/9 (Vision OSEM), 3/9 (mMR OSEM and mCT OSEM-TOF+PSF), and 2/9 (mCT OSEM and OSEM-TOF). Median image quality was 4 (Vision OSEM-TOF and OSEM-TOF+PSF), 3 (Vision OSEM, mCT OSEM-TOF+PSF, and mMR OSEM 20-min), 2 (mCT OSEM-TOF), 1.5 (mCT OSEM), and 1 (mMR OSEM 4 min). Conclusion At a clinical standard acquisition time of 4 min per bed position, the new generation Biograph Vision using a TOF-based image reconstruction demonstrated the highest detectability and image quality and should, if available, be preferably used for imaging of low-uptake lesions. A prolonged acquisition time for the mostly affected neck region can be useful. Supplementary Information The online version contains supplementary material available at 10.1186/s40658-021-00361-y.
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Affiliation(s)
- David Kersting
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany. .,West German Cancer Center (WTZ), Essen, Germany. .,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany.
| | - Walter Jentzen
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | - Miriam Sraieb
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | - Pedro Fragoso Costa
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | | | - Lale Umutlu
- West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany.,Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147, Essen, Germany
| | - Gerald Antoch
- German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany.,Medical Faculty, Department of Diagnostic and Interventional Radiology, University Dusseldorf, 40225, Dusseldorf, Germany
| | - Michael Nader
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | - Wolfgang Peter Fendler
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | - Christoph Rischpler
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
| | - Manuel Weber
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.,West German Cancer Center (WTZ), Essen, Germany.,German Cancer Consortium (DKTK), Essen and Dusseldorf, Germany
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Weber M, Binse I, Nagarajah J, Bockisch A, Herrmann K, Jentzen W. The role of 124I PET/CT lesion dosimetry in differentiated thyroid cancer. THE QUARTERLY JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING : OFFICIAL PUBLICATION OF THE ITALIAN ASSOCIATION OF NUCLEAR MEDICINE (AIMN) [AND] THE INTERNATIONAL ASSOCIATION OF RADIOPHARMACOLOGY (IAR), [AND] SECTION OF THE SOCIETY OF RADIOPHARMACEUTICAL CHEMISTRY AND BIOLOGY 2019; 63:235-252. [DOI: 10.23736/s1824-4785.19.03201-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Kühnel C, Winkens T, Seifert P, Drescher R, Freesmeyer M. RADIATION EXPOSURE OF THE INVESTIGATOR DURING NAVIGATED FUSION OF 124IODINE PET IMAGING AND ULTRASOUND. RADIATION PROTECTION DOSIMETRY 2018; 181:368-373. [PMID: 29509945 DOI: 10.1093/rpd/ncy036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
To assess the radiation exposure of the investigator during navigated fusion of nuclear medicine images with ultrasound after application of I-124. Dosimetry with two different types of thermoluminescent detectors (TLD) was performed in 25 patients. The dose rate at the patient's neck was measured with a calibrated dose rate meter (DRM) and served as the standard of reference. The average exposure per investigation at the patient's neck measured by LiF:Mg,Cu,P TLDs (cumulative: 212 μSv), LiF:Mg,Ti TLDs (cumulative: 112 μSv) and DRM (cumulative: 150.3 μSv). The radiation exposure of the hand during navigated fusion of nuclear medicine imaging with 124I and ultrasound with a mean duration of 13 min is low and comparable between different methods. Yearly examinations are not expected to add a relevant cumulative risk.
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Affiliation(s)
- Christian Kühnel
- Clinic of Nuclear Medicine, Jena University Hospital, Jena, Germany
| | - Thomas Winkens
- Clinic of Nuclear Medicine, Jena University Hospital, Jena, Germany
| | - Philipp Seifert
- Clinic of Nuclear Medicine, Jena University Hospital, Jena, Germany
| | - Robert Drescher
- Clinic of Nuclear Medicine, Jena University Hospital, Jena, Germany
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Hong CM, Kim CY, Son SH, Jung JH, Lee CH, Jeong JH, Jeong SY, Lee SW, Lee J, Ahn BC. I-131 biokinetics of remnant normal thyroid tissue and residual thyroid cancer in patients with differentiated thyroid cancer: comparison between recombinant human TSH administration and thyroid hormone withdrawal. Ann Nucl Med 2017; 31:582-589. [PMID: 28677070 DOI: 10.1007/s12149-017-1188-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 06/19/2017] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The aim of this study was to assess I-131 biokinetics in thyroid cancer and remnant tissue in patients with differentiated thyroid cancer using whole-body scan (WBS) and SPECT images acquired after I-131 therapy. The influence of thyroid stimulating hormone (TSH) stimulation method on the kinetics was also evaluated. METHODS A total of 57 patients who received I-131 therapy (2.96-7.4 GBq) were retrospectively included. TSH stimulation was achieved by recombinant human thyrotropin (rhTSH) or by thyroid hormone withdrawal (THW). Each patient received three sequential WBSs on days 1, 2, and 4 (or 5) after I-131 administration. All lesions were classified either as thyroid remnant (ThyR) or as metastatic lymph nodes (mLN) after considering the SPECT/CT images acquired during the last WBS. The lesion-based retention rate and absorbed dose of ThyR and mLN were calculated using a commercial dosimetric toolkit combined with the OLINDA software. RESULTS The retention rate and the effective half-time of mLN were lower than that of ThyR (p < 0.001, p = 0.003). In addition, the retention rate and the effective half-time of ThyR in the rhTSH group were higher than those in the THW group (p < 0.001, p < 0.001). The differences in the retention rate and the effective half-time of mLN were not statistically significant between the THW group and rhTSH group (p = 0.549, p = 0.571). CONCLUSIONS Radioiodine therapy using rhTSH delivered an at least similar radiation dose to target lesions compared to using THW in thyroid remnants and metastatic lymph nodes.
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Affiliation(s)
- Chae Moon Hong
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Choon-Young Kim
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Seung Hyun Son
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Ji-Hoon Jung
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Chang-Hee Lee
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Ju Hye Jeong
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Shin Young Jeong
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Sang-Woo Lee
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Jaetae Lee
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
| | - Byeong-Cheol Ahn
- Department of Nuclear Medicine, Kyungpook National University School of Medicine/Hospital, 50 Samduk-dong 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea.
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Clinical outcomes of low-dose and high-dose postoperative radioiodine therapy in patients with intermediate-risk differentiated thyroid cancer. Nucl Med Commun 2017; 38:228-233. [PMID: 27984538 DOI: 10.1097/mnm.0000000000000636] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Recent studies have suggested that a low dose (LD) of radioiodine (RAI) is sufficient to treat differentiated thyroid cancer (DTC) even in patients with intermediate risk. However, these studies evaluated the efficacy of RAI therapy, irrespective of the results of the whole-body scan (WBS). The aim of the present study was to evaluate the response to LD and high-dose (HD) RAI therapy using two different criteria (with and without WBS results) and the reclassification system according to the revised 2015 guidelines of the American Thyroid Association in Korean intermediate-risk DTC patients. In addition, we evaluated the long-term clinical outcomes of treatment with LD and HD RAI. MATERIALS AND METHODS In total, 204 intermediate-risk DTC patients who underwent postoperative RAI therapy at two tertiary referral hospitals from 2003 to 2004 were enrolled in the present retrospective study. One hundred and twenty-four patients were treated with 3.7 and 5.55 GBq (HD) of RAI in one center and 80 patients were treated with 1.11 GBq (LD) in the other center. The success rate of RAI therapy was assessed with or without the inclusion of WBS results in the analysis. In addition, the response to therapy during the first 2 years of follow-up after the initial RAI therapy was categorized according to the reclassification system of 2015 American Thyroid Association guidelines as excellent response, indeterminate response, biochemical incomplete response, or structural incomplete response. Recurrence was defined as a newly detected cytologically or pathologically confirmed lesion. RESULTS There were no significant differences between the success rates of the HD and LD groups irrespective of the inclusion of WBS results in the analysis (with WBS: 54.84 vs. 45.0%, P=0.23; without WBS: 60.48 vs. 62.5%, P=0.77). The response to HD and LD RAI therapy was excellent in 54.84 and 45.0% of the patients, respectively; indeterminate in 34.68 and 30.0% of the patients, respectively; biochemical incomplete in 4.03 and 13.75% of the patients, respectively; and structural incomplete in 6.45% and in 11.25% of the patients, respectively (P=0.04). In particular, the biochemical or structural incomplete response rate was lower in patients treated with HD than in patients treated with LD (HD, 10.48%; LD, 25.0%, P=0.01). At the last follow-up (HD, median 11 years; LD, median 10 years), patients who achieved an excellent response showed no evidence of disease. After the initial RAI therapy, eight patients in the HD group and 18 patients in the LD group who achieved either indeterminate response or biochemical incomplete response received additional RAI therapy. Seven patients (indeterminate response in five patients; biochemical incomplete response in two patients) in the HD group and seven patients (indeterminate response in five patients; biochemical incomplete response in two patients) in the LD group showed recurrences. CONCLUSION LD RAI therapy after thyroidectomy appears to be insufficient in Korean DTC patients with intermediate risk. The patients in the LD group predominantly showed biochemical or structural incomplete response to initial RAI therapy and additional RAI therapy was required.
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Mínguez P, Flux G, Genollá J, Delgado A, Rodeño E, Sjögreen Gleisner K. Whole-remnant and maximum-voxel SPECT/CT dosimetry in 131 I-NaI treatments of differentiated thyroid cancer. Med Phys 2016; 43:5279-5287. [PMID: 28105713 DOI: 10.1118/1.4961742] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 08/08/2016] [Accepted: 08/13/2016] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To investigate the possible differences between SPECT/CT based whole-remnant and maximum-voxel dosimetry in patients receiving radio-iodine ablation treatment of differentiated thyroid cancer (DTC). METHODS Eighteen DTC patients were administered 1.11 GBq of 131 I-NaI after near-total thyroidectomy and rhTSH stimulation. Two patients had two remnants, so in total dosimetry was performed for 20 sites. Three SPECT/CT scans were performed for each patient at 1, 2, and 3-7 days after administration. The activity, the remnant mass, and the maximum-voxel activity were determined from these images and from a recovery-coefficient curve derived from experimental phantom measurements. The cumulated activity was estimated using trapezoidal-exponential integration. Finally, the absorbed dose was calculated using S-values for unit-density spheres in whole-remnant dosimetry and S-values for voxels in maximum-voxel dosimetry. RESULTS The mean absorbed dose obtained from whole-remnant dosimetry was 40 Gy (range 2-176 Gy) and from maximum-voxel dosimetry 34 Gy (range 2-145 Gy). For any given patient, the activity concentrations for each of the three time-points were approximately the same for the two methods. The effective half-lives varied (R = 0.865), mainly due to discrepancies in estimation of the longer effective half-lives. On average, absorbed doses obtained from whole-remnant dosimetry were 1.2 ± 0.2 (1 SD) higher than for maximum-voxel dosimetry, mainly due to differences in theS-values. The method-related differences were however small in comparison to the wide range of absorbed doses obtained in patients. CONCLUSIONS Simple and consistent procedures for SPECT/CT based whole-volume and maximum-voxel dosimetry have been described, both based on experimentally determined recovery coefficients. Generally the results from the two approaches are consistent, although there is a small, systematic difference in the absorbed dose due to differences in the S-values, and some variability due to differences in the estimated effective half-lives, especially when the effective half-life is long. Irrespective of the method used, the patient absorbed doses obtained span over two orders of magnitude.
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Affiliation(s)
- Pablo Mínguez
- Department of Medical Radiation Physics, LundUniversity, Lund 22185, Sweden and Department of Medical Physics, Gurutzeta/Cruces University Hospital, Barakaldo 48903, Spain
| | - Glenn Flux
- Joint Department of Physics, Royal Marsden NHS Foundation Trust andInstitute of Cancer Research, Sutton SM2 5PT, United Kingdom
| | - José Genollá
- Department of Nuclear Medicine, Gurutzeta/Cruces UniversityHospital, Barakaldo 48903, Spain
| | - Alejandro Delgado
- Department of Nuclear Medicine, Gurutzeta/Cruces UniversityHospital, Barakaldo 48903, Spain
| | - Emilia Rodeño
- Department of Nuclear Medicine, Gurutzeta/Cruces UniversityHospital, Barakaldo 48903, Spain
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Mahajan S, Divgi CR. The role of iodine-124 positron emission tomography in molecular imaging. Clin Transl Imaging 2016. [DOI: 10.1007/s40336-016-0186-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Ruhlmann M, Jentzen W, Ruhlmann V, Pettinato C, Rossi G, Binse I, Bockisch A, Rosenbaum-Krumme S. High Level of Agreement Between Pretherapeutic 124I PET and Intratherapeutic 131I Imaging in Detecting Iodine-Positive Thyroid Cancer Metastases. J Nucl Med 2016; 57:1339-42. [PMID: 27151981 DOI: 10.2967/jnumed.115.169649] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 03/26/2016] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED The aim of this retrospective study was to assess the level of agreement between PET and scintigraphy using diagnostic amounts of (124)I and therapeutic amounts of (131)I, respectively, in detecting iodine-positive metastases in patients with differentiated thyroid carcinoma. METHODS The study included patients who underwent PET /: CT 24 and 120 h after administration of approximately 25 MBq of (124)I and subsequently underwent imaging 5-10 d after administration of 1-10 GBq of (131)I. For each patient, the intratherapeutic (131)I imaging comprised a whole-body scintigraphy scan and a SPECT/CT scan of the neck to distinguish between metastatic and thyroid remnant tissues. Iodine uptake was rated as a metastatic focus if located outside the thyroid bed. Lesion- and patient-based analyses were performed. RESULTS The study included 137 patients with 227 metastases iodine-positive on both functional imaging modalities. In the lesion-based analysis, (124)I PET and (131)I imaging detected 98% (223/227) and 99% (225/227) of the iodine-positive metastases, respectively; the level of agreement between (124)I PET and (131)I imaging was 97% (221/227). Four metastases (3 lymph node and 1 bone) in 4 patients were (124)I-negative but (131)I-positive, and 2 lymph node metastases in 2 patients were (131)I-negative but (124)I-positive. In the patient-based analysis, 61 of the 137 patients presented with iodine-positive metastases. (124)I PET and (131)I imaging detected at least one iodine-positive metastasis in 97% (59/61) and 98% (60/61) of the patients, respectively. The level of agreement was 95% (58/61). Both imaging modalities concordantly identified 76 of 137 patients without pathologic iodine uptake. CONCLUSION Because of the high level of agreement, pretherapeutic (124)I PET/CT is an adequate methodology in the detection of iodine-positive metastases and can be used as a reliable tool for staging of thyroid cancer patients and individualized treatment planning.
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Affiliation(s)
- Marcus Ruhlmann
- Department of Nuclear Medicine, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Walter Jentzen
- Department of Nuclear Medicine, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Verena Ruhlmann
- Department of Nuclear Medicine, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Cinzia Pettinato
- Medical Physics Unit, Orsola-Malpighi University Hospital, Bologna, Italy; and
| | - Gloria Rossi
- Medical Physics Unit, Service Department, Macerata Hospital, Macerata, Italy
| | - Ina Binse
- Department of Nuclear Medicine, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Andreas Bockisch
- Department of Nuclear Medicine, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Sandra Rosenbaum-Krumme
- Department of Nuclear Medicine, University Hospital, University Duisburg-Essen, Essen, Germany
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Sabet A, Binse I, Grafe H, Ezziddin S, Görges R, Poeppel TD, Bockisch A, Rosenbaum-Krumme SJ. Prognostic impact of incomplete surgical clearance of radioiodine sensitive local lymph node metastases diagnosed by post-operative 124I-NaI-PET/CT in patients with papillary thyroid cancer. Eur J Nucl Med Mol Imaging 2016; 43:1988-94. [DOI: 10.1007/s00259-016-3400-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/13/2016] [Indexed: 02/08/2023]
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