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Hata H, Shimomura S, Imamachi K, Sato J, Asaka T, Hirata K, Funayama K, Mori Y, Matsuzaka M, Nambu T, Kitagawa Y. Stability of standardized uptake values for quantitative bone SPECT for jawbone lesions: a single-center cross-sectional study. BMC Oral Health 2024; 24:305. [PMID: 38443942 PMCID: PMC10913536 DOI: 10.1186/s12903-024-04067-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 02/23/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND The long time required for bone uptake of radiopharmaceutical material after injection for bone scintigraphy is a burden for patients with poor health. Thus, to assess whether the uptake time could be reduced for single-photon emission computed tomography (SPECT) of the jawbone, this study evaluated differences in maximum standardized uptake values (SUVmax) within patients using SPECT imaging at 2 and 3 hours after radiopharmaceutical injection. METHODS A total of 33 patients undergoing treatment or in post-treatment follow-up for medication-related osteonecrosis of the jaw, who visited our hospital between July 2020 and August 2021 and could receive SPECT twice on the same day, were enrolled in the study. Patients were injected with technetium-99 m hydroxymethylene diphosphonate (Tc-99 m HMDP) intravenously. The SUVmax for healthy parietal bones and jawbone lesions were calculated from the SPECT images using quantitative analysis software, and the SUVmax were compared between 2- and 3-hour uptake times. RESULTS After exclusion, 30 patients were included in the study. In the 2-hour and 3-hour images, the median SUVmax of the parietal bones were 1.90 and 1.81, respectively, and those of the jawbone lesions were 9.25 and 9.39, respectively. The limits of agreement (LOA) ranged from - 0.33 to 0.25 in the parietal bones, and the %LOA ranged from - 9.8 to 17.3% in the jawbone lesions, showing high equivalence between the two uptake durations. The SUVmax showed no clinical differences between the 2- and 3-hour uptake durations for Tc-99 m HMDP SPECT of the jawbone. CONCLUSIONS The results of this study justify a 2-3-hour uptake window when performing quantitative SPECT of the jawbone. Therefore, the minimum uptake time can potentially be reduced to only 2 hours.
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Affiliation(s)
- Hironobu Hata
- Department of Dentistry and Oral Surgery, NHO Hokkaido Cancer Center, Sapporo, Japan.
- Department of Dentistry and Oral Surgery, NHO Hokkaido Cancer Center, 3-54, Kikusui4-Jyo 2-Tyoume, Sapporo Shiroishi-Ku, Hokkaido, 003-0804, Japan.
| | | | - Kenji Imamachi
- Department of Dentistry and Oral Surgery, NHO Hokkaido Cancer Center, Sapporo, Japan
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Jun Sato
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Takuya Asaka
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Kenji Hirata
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | | | - Yoichi Mori
- Department of Radiology, NHO Hokkaido Cancer Center, Sapporo, Japan
| | - Masashi Matsuzaka
- Clinical Research Support Centre, Hirosaki University Hospital, Hirosaki, Japan
- Department of Medical Informatics, Hirosaki University Hospital, Hirosaki, Japan
| | - Toshikazu Nambu
- Department of Radiology, NHO Hokkaido Cancer Center, Sapporo, Japan
| | - Yoshimasa Kitagawa
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
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Tezuka Y, Ogura I. Maximum and mean standardized uptake values of medication-related osteonecrosis of the jaw with bone SPECT/CT: comparison of mandibular pathologies, control and temporomandibular joints. Dentomaxillofac Radiol 2023; 52:20230119. [PMID: 37395742 PMCID: PMC10461260 DOI: 10.1259/dmfr.20230119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 07/04/2023] Open
Abstract
OBJECTIVE Recently, single-photon emission CT/CT (SPECT/CT) plays an important role in assessing patients with medication-related osteonecrosis of the jaw (MRONJ). The aim of this study was to investigate maximum and mean standardized uptake values (SUVs) of MRONJ with bone SPECT/CT, especially comparison of mandibular pathologies, control and temporomandibular joints. METHODS 61 mandibular patients with MRONJ who underwent bone SPECT/CT were included in this study. The maximum and mean SUVs of the lesion, right and left sides of the lesion, opposite side of the lesion as control, right and left temporomandibular joints were analyzed using a workstation and software. The SUVs of MRONJ were analyzed using one-way analysis of variance with Tukey's honestly significant difference test. Patient characteristics with MRONJ and SUVs were analyzed using Mann-Whitney U test. P-values less than 0.05 were considered to indicate statistical significance. RESULTS The maximum and mean SUVs for opposite side of the lesions (4.4 ± 2.0 and 1.8 ± 0.7) were significantly lower than those for mandibular lesions (18.3 ± 8.1 and 6.3 ± 2.8), right side of the lesions (8.1 ± 3.9 and 2.9 ± 1.3) and left side of the lesions (8.1 ± 3.9 and 2.8 ± 1.4), respectively. The maximum and mean SUVs for right and left sides of the lesions, and opposite side of the lesions, right and left temporomandibular joints were not significant difference. Furthermore, the maximum SUVs of the mandibular lesions were a significant difference for age and staging. CONCLUSIONS The maximum and mean SUVs with SPECT/CT can be useful in the quantitative management of MRONJ patients.
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Affiliation(s)
- Yasuhito Tezuka
- Quantitative Diagnostic Imaging, Field of Oral and Maxillofacial Imaging and Histopathological Diagnostics, Course of Applied Science, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan
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Okui T, Kobayashi Y, Isomura M, Tsujimoto M, Satoh K, Toyama H. Histopathological findings affect quantitative values of single photon emission computed tomography in patients with antiresorptive agent-related osteonecrosis of the jaws. FUJITA MEDICAL JOURNAL 2023; 9:186-193. [PMID: 37554942 PMCID: PMC10405893 DOI: 10.20407/fmj.2022-025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/12/2022] [Indexed: 08/10/2023]
Abstract
OBJECTIVES This study investigated the relationships between quantitative values calculated from bone single photon emission computed tomography/computed tomography (SPECT/CT) images and histopathological findings observed in surgical specimens from patients with antiresorptive agent-related osteonecrosis of the jaw (ARONJ); it sought to clarify histopathological factors that cause accumulation in bone SPECT/CT images of patients with ARONJ. METHODS This study included 81 pathological specimens of 21 lesions obtained from 18 patients with ARONJ who underwent SPECT/CT and jaw resection. The maximum standardized uptake value (SUVmax) of each volume of interest of the specimens was calculated using RAVAT® software. The ratio of the SUVmax to the mean value of SUVmax in temporal bone was termed rSUVmax. The rSUVmax and pathological findings (sequestration, degree of fibrosis, degree of trabecular bone destruction, degree of inflammatory cell infiltration, and vascularity) were compared using the Mann-Whitney U test and the Kruskal-Wallis test. RESULTS In univariate analysis with rSUVmax as the dependent variable, the pathological findings of sequestration (P=0.058), degree of fibrosis (P=0.810), degree of trabecular bone destruction (P=0.237), degree of inflammatory cell infiltration (P=0.120), and vascularity (P=0.111) showed no significant difference among the groups for each variable. CONCLUSIONS We found no association between quantitative values in bone SPECT/CT and histological changes in ARONJ, probably because bone SPECT/CT has limited spatial resolution. Limitations of this study may include the imaging findings of a decrease in tracer accumulation because of an involucrum of necrosed bone, various histopathological findings in ARONJ, and failure to consider the effect of preoperative anti-inflammatory treatment.
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Affiliation(s)
- Taro Okui
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Yoshikazu Kobayashi
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Madoka Isomura
- Department of Diagnostic Pathology, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Masakazu Tsujimoto
- Department of Radiology, Fujita Health University Hospital, Toyoake, Aichi, Japan
| | - Koji Satoh
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Hiroshi Toyama
- Department of Radiology, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
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Moridera K, Kitajima K, Yoshikawa K, Takaoka K, Tsuchitani T, Noguchi K, Kishimoto H, Yamakado K. Usefulness of quantitative bone SPECT/CT for evaluating medication-related osteonecrosis of the jaw treatment response. Jpn J Radiol 2023:10.1007/s11604-023-01389-z. [PMID: 36656541 DOI: 10.1007/s11604-023-01389-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 01/05/2023] [Indexed: 01/20/2023]
Abstract
OBJECTIVE For assessment of therapeutic response in medication-related osteonecrosis of the jaw (MRONJ) cases, the clinical usefulness of quantitative bone single-photon computed tomography-computed tomography (SPECT/CT) results was investigated. MATERIALS AND METHODS Sixteen patients (18 lesions) with a clinical diagnosis of MRONJ underwent bone SPECT/CT scanning before and during/after anti-inflammatory therapy given for 3 or more months. The GI-BONE software package was used to determine standard uptake values (SUVs), including maximum (SUVmax), peak (SUVpeak), and mean (SUVmean), and metabolic bone volume (MBV) and also total bone uptake (TBU). In both responders (downstage) and non-responders (upstage or no change), differences in quantitative values between the first and second SPECT/CT examinations were analyzed using a Wilcoxon test. RESULTS Following therapy, significant reductions in SUVmax, SUVpeak, SUVmean, MBV and TBU values for 11 lesions were noted in the responders after therapy (p = 0.003, p = 0.006, p = 0.004, p = 0.003, and p = 0.002, respectively). On the other hand, those for the seven lesions in the non-responder group were not significantly different (p = 0.17, p = 0.16, p = 0.26, p = 0.96, and p = 0.12, respectively). Results for SUVmax change showed sensitivity and specificity values of 45.5% and 85.7%, respectively, for differentiating responders from non-responders, with - 37.3% the optimal cutoff value. Those for MBV change were 72.7 and 85.7%, respectively, with - 29.4% the optimal cutoff value. Those for TBU change were 81.8% and 85.7%, respectively, with - 36.3% the optimal cutoff value. CONCLUSION The present findings showed that therapeutic response in MRONJ cases could be determined by use of quantitative SUV, MBV, and TBU values based on bone SPECT/CT findings.
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Affiliation(s)
- Kuniyasu Moridera
- Department of Oral and Maxillofacial Surgery, Hyogo Medical University, 1-1 Mukogawa-Cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Kazuhiro Kitajima
- Department of Radiology, School of Medicine, Hyogo Medical University, Nishinomiya, Japan
| | - Kyohei Yoshikawa
- Department of Oral and Maxillofacial Surgery, Hyogo Medical University, 1-1 Mukogawa-Cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Kazuki Takaoka
- Department of Oral and Maxillofacial Surgery, Hyogo Medical University, 1-1 Mukogawa-Cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Tatsuya Tsuchitani
- Department of Radiological Technology, Hyogo Medical University Hospital, Nishinomiya, Japan
| | - Kazuma Noguchi
- Department of Oral and Maxillofacial Surgery, Hyogo Medical University, 1-1 Mukogawa-Cho, Nishinomiya, Hyogo, 663-8501, Japan.
| | - Hiromitsu Kishimoto
- Department of Oral and Maxillofacial Surgery, Hyogo Medical University, 1-1 Mukogawa-Cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Koichiro Yamakado
- Department of Radiology, School of Medicine, Hyogo Medical University, Nishinomiya, Japan
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Yamane T, Matsusaka Y, Fukushima K, Seto A, Matsunari I, Kuji I. Quantification of bone metabolic activity in the natural course of fractural lesions measured by quantitative SPECT/CT. ASIA OCEANIA JOURNAL OF NUCLEAR MEDICINE & BIOLOGY 2023; 11:30-36. [PMID: 36619183 PMCID: PMC9803622 DOI: 10.22038/aojnmb.2022.63484.1446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/25/2022] [Accepted: 04/03/2022] [Indexed: 01/10/2023]
Abstract
Objectives While increased uptake at the bone fractural site gradually decreases over time on bone scans, the rate of change has not been quantitatively evaluated. The purpose of this study was to quantify the extent of bone metabolic changes in fractural lesions on bone SPECT/CT. Methods We reviewed bone scans acquired by dedicated SPECT/CT and chose those scans in which quantitative SPECT/CT of the same range was acquired twice or more. We set the region of interest on lesions of bone fracture and degeneration, and measured the maximum standardized uptake value (SUVmax). From the SUVmax of lesions and the interval between scans, a value for 30-day change in SUVmax was calculated as ∆SUVmax30d. The relationship between preSUVmax, SUVmax for the first scan of the comparison, and ∆SUVmax30d was evaluated utilizing a linear least-squares method. Furthermore, we assessed the ability to differentiate between fracture and degeneration using receiver operating characteristics (ROC) analysis and the Mann-Whitney U test. All cases were then categorized into five groups according to preSUVmax. Values of p <0.05 were considered statistically significant. Results We investigated 175 scans from 60 patients and analyzed scan combinations for 157 fractural lesions and 266 degenerative lesions. The relationship between preSUVmax of fractural lesions and ∆SUVmax30d was approximated as ∆SUVmax30d =-0.15×preSUVmax +1.35 (R 2=0.60, p<0.0001). Area under the curves for all cases, 30≤ preSUVmax, 20≤ preSUVmax <30, 15≤ preSUVmax <20, 10≤ preSUVmax <15, and preSUVmax <10 were 0.73, 0.89, 0.86, 0.80, 0.91, and 0.59, respectively. Median ∆SUVmax30d was significantly lower at fractural lesions than at degenerative lesions (-0.62 vs -0.04; p <0.0001). As for analyses of groups divided by preSUVmax, all median ∆SUVmax30d for fractural lesions were significantly lower than those of degenerative lesions except for the group with preSUVmax <10. Conclusion The increased uptake at the fractural bone lesion observed in the quantitative bone SPECT/CT gradually decreased at the rate of SUV 0.15 per month, which showed a different trend with degenerative change.
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Affiliation(s)
- Tomohiko Yamane
- Department of Molecular Imaging Research, Kobe City Medical Center General Hospital, Japan,Department of Nuclear Medicine, Saitama Medical University International Medical Center, Japan,Corresponding author: Tomohiko Yamane. Division of Molecular Imaging Research, Kobe City Medical Center General Hospital Minatojima-Minamimachi 2-1-1, Chuo-Ku, Kobe, 650-0047, Japan. Tel: +81-78-302-4321; E-mail:
| | - Yohji Matsusaka
- Department of Nuclear Medicine, Saitama Medical University International Medical Center, Japan
| | - Kenji Fukushima
- Department of Nuclear Medicine, Saitama Medical University International Medical Center, Japan,Department of Radiology and Nuclear Medicine, Fukushima Medical University, Japan
| | - Akira Seto
- Department of Nuclear Medicine, Saitama Medical University International Medical Center, Japan
| | - Ichiro Matsunari
- Division of Nuclear Medicine, Department of Radiology, Saitama Medical University Hospital, Japan
| | - Ichiei Kuji
- Department of Nuclear Medicine, Saitama Medical University International Medical Center, Japan
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Minami Y, Ogura I. Comparison of maximum and mean standardized uptake values of jaw pathologies with bone SPECT/CT: an especial focus on medication-related osteonecrosis of the jaw. Nucl Med Commun 2022; 43:1188-1194. [PMID: 36345763 DOI: 10.1097/mnm.0000000000001624] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVES To investigate the comparison of maximum and mean standardized uptake values (SUVs) of jaw pathologies with bone Single-photon emission computed tomography/computed tomography (SPECT/CT), and a special focus on medication-related osteonecrosis of the jaw (MRONJ). METHODS Eighty-nine patients with jaw pathologies (63 MRONJ, 13 chronic osteomyelitis, 11 osteoradionecrosis and 2 primary intraosseous carcinoma) underwent bone SPECT/CT scans acquisition at 4 h after intravenous injection of Tc-99m hydroxymethylene diphosphonate in this prospective study. The evaluation of mean and maximum SUVs of jaw pathologies were performed using Q. Metrix and Xeleris workstation and defined the data automatically. Statistical analyses were performed by Pearson's correlation coefficient for comparison of maximum and mean SUVs and Mann-Whitney U-test for SUVs of MRONJ. A P value lower than 0.05 was considered to indicate statistical significance. RESULTS Maximum SUVs of MRONJ, chronic osteomyelitis, osteoradionecrosis and primary intraosseous carcinoma were 17.6 ± 8.4, 21.7 ± 7.1, 11.9 ± 4.8 and 26.6 ± 7.0, respectively. Mean SUVs of MRONJ, chronic osteomyelitis, osteoradionecrosis and primary intraosseous carcinoma were 10.1 ± 4.9, 11.9 ± 3.3, 7.0 ± 2.8 and 10.1 ± 4.5, respectively. The maximum SUV of jaw pathologies was significantly correlated with the mean SUV (Y = 0.494X + 1.228; R2 = 0.786; P < 0.001). Furthermore, maximum and mean SUVs of MRONJ had significant differences in underlying diseases, medication and staging. CONCLUSION The maximum and mean SUVs with bone SPECT/CT can be an effective tool for the quantitative evaluation of jaw pathologies, especially MRONJ.
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Affiliation(s)
- Yoshiyuki Minami
- Quantitative Diagnostic Imaging, Field of Oral and Maxillofacial Imaging and Histopathological Diagnostics, Course of Applied Science, The Nippon Dental University Graduate School of Life Dentistry at Niigata
| | - Ichiro Ogura
- Quantitative Diagnostic Imaging, Field of Oral and Maxillofacial Imaging and Histopathological Diagnostics, Course of Applied Science, The Nippon Dental University Graduate School of Life Dentistry at Niigata
- Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry at Niigata, Niigata, Japan
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Hayashi N, Tokorodani R, Kenda S, Ogasawara D, Yabe F, Ito K. [Determination of Bone SPECT Image Reconstruction Conditions in the Head and Neck Region]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2021; 77:700-709. [PMID: 34305056 DOI: 10.6009/jjrt.2021_jsrt_77.7.700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE Quantitative analysis using a standardized uptake value (SUV) has become possible for single-photon emission computed tomography-computed tomography (SPECT-CT) of bone. However, previous research was targeted to the trunk area, and there are few studies for the head and neck region. Therefore, the purpose of this study was to determine the optimal image reconstruction conditions for bone SPECT of the head and neck using a phantom study. METHOD The radioactivity concentration of the 99mTc solution enclosed in the cylindrical phantom was set to the same count rate as in clinical cases, and six hot spheres (10, 13, 17, 22, 28, 37 mm) with four times the concentration were placed within it. The image reconstruction was 3D-OSEM, and the reconstruction conditions were varied by the number of iterative updates and the width of the Gaussian filter. Quantitative evaluations of the image quality were performed using the % contrast, background variability, and SUV for the hot spheres and background. A visual evaluation was performed by four observers to determine the optimal image reconstruction conditions for bone SPECT of the head and neck region. RESULT The concentration of the 99mTc solution enclosed in the phantom was 6.95 (kBq/ml). Based on the results of the quantitative and visual evaluations, the optimal image reconstruction conditions were iterative updates=60 (subset: 10, iteration: 6) and a Gaussian filter of 7.8 mm. CONCLUSION The optimal image reconstruction conditions were subset=10, iterations=6, and a Gaussian filter of 7.8 mm.
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Affiliation(s)
- Naoya Hayashi
- Division of Radiology, Department of Medical Technology, Kochi Medical School Hospital
| | - Ryotaro Tokorodani
- Division of Radiology, Department of Medical Technology, Kochi Medical School Hospital
| | - Shuji Kenda
- Division of Radiology, Department of Medical Technology, Kochi Medical School Hospital
| | - Daisuke Ogasawara
- Division of Radiology, Department of Medical Technology, Kochi Medical School Hospital
| | - Fumika Yabe
- Division of Radiology, Department of Medical Technology, Kochi Medical School Hospital
| | - Kenji Ito
- Division of Radiology, Department of Medical Technology, Kochi Medical School Hospital
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Ishihara M, Kato Y, Onoguchi M, Shibutani T. An alternative method for radioactivity measurement in quantitative bone SPECT/CT imaging. Sci Prog 2021; 104:368504211028363. [PMID: 34231449 PMCID: PMC10450721 DOI: 10.1177/00368504211028363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bone scintigraphy with combined single-photon emission computed tomography (SPECT) and computed tomography (CT) has become widely used for the detection of bone metastases. However, calculation of the semi-quantitative standardized uptake value (SUV) requires measurement of the pre- and post-injection radioactivity of the radiopharmaceutical. This study aimed to compare measured and fixed input radioactivity values for quantitative SPECT/CT bone imaging to examine whether the fixed measurement method of radiopharmaceutical radioactivity could be used as an alternative method. Four different methods were used to quantify the Tc-99m hydroxymethylene diphosphonate input radioactivity: (A) measured pre- and post-injection radioactivity values; (B) measured pre-injection and fixed post-injection radioactivity values; (C) fixed pre-injection and measured post-injection radioactivity values; (D) fixed pre- and post-injection radioactivity values. All SPECT/CT acquisitions were analyzed using bone SPECT analysis software, and the semi-quantitative parameters (SUVpeak and SUVmean) were recorded and compared for each analytical method. Two semi-quantitative parameters showed significant differences between analytical methods A and B, A and D, and C and D. However, an additional subgroup analysis performed on patients whose median post-injection measured radioactivity value was <1.5 MBq showed no significant differences in parameters between all analytical methods. Measurement of the radiopharmaceutical radioactivity can be an alternative method because it reduces the volume of radioactivity post-injection. The simplified fixed measurement method of radiopharmaceutical radioactivity can be used as an alternative method in cases when measuring the radioactivity in quantitative bone SPECT/CT imaging is missed.
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Affiliation(s)
- Masaru Ishihara
- Department of Radiology, Hyogo Prefectural Kakogawa Medical Center, Kakogawa, Hyogo, Japan
| | - Yasuaki Kato
- Department of Radiology, Hyogo Prefectural Awaji Medical Center, Sumoto, Hyogo, Japan
| | - Masahisa Onoguchi
- Department of Quantum Medical Technology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takayuki Shibutani
- Department of Quantum Medical Technology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
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Kitajima K, Noguchi K, Moridera K, Kishimoto H, Tsuchitani T, Takahashi Y, Furudoi S, Yamakado K. Usefulness of Quantitative Bone SPECT/CT for Evaluating Treatment Response in a Patient with Mandibular Osteomyelitis. Case Rep Oncol 2021; 14:820-825. [PMID: 34267634 PMCID: PMC8261260 DOI: 10.1159/000516761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 04/14/2021] [Indexed: 11/19/2022] Open
Abstract
We report here a case of mandibular osteomyelitis in a 63-year-old female in which quantitative values determined using bone SPECT/CT were useful to evaluate response to antibiotic therapy, hyperbaric oxygen therapy, and sequestomy. After finishing therapy, the chief complaints were well relieved, and posttreatment Tc-99m HMDP bone SPECT/CT examination showed decreased uptake. The maximum standardized uptake value (SUV), peak SUV, mean SUV, metabolic bone volume, and total bone uptake of the untreated lesion were 6.26, 5.16, 3.97, and 11.86 mL and 42.21, respectively, which were decreased to 4.65, 3.90, 2.77, and 9.67 mL and 26.80, respectively, following hyperbaric oxygen therapy and antibiotic administration, and were moreover decreased to 4.28, 3.67, 2.75, and 6.24 mL and 17.19, respectively, after sequestomy. In comparison with pretreatment situation, those parameters were decreased by −25.7, −24.4, −30.2, −18.5, and −36.5%, respectively, following hyperbaric oxygen therapy and antibiotic administration, and moreover by −31.6, −28.9, −30.7, −47.4, and −59.3, respectively, after sequestomy, likely reflecting treatment response. Quantitative bone SPECT/CT may be useful to evaluate bone inflammatory activity and treatment response in a patient with mandibular osteomyelitis.
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Affiliation(s)
| | - Kazuma Noguchi
- Department of Oral and Maxillofacial Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Kuniyasu Moridera
- Department of Oral and Maxillofacial Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Hiromitsu Kishimoto
- Department of Oral and Maxillofacial Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Tatsuya Tsuchitani
- Department of Radiological Technology, Hyogo College of Medicine College Hospital, Hyogo, Japan
| | - Yoshiyuki Takahashi
- Department of Radiological Technology, Hyogo College of Medicine College Hospital, Hyogo, Japan
| | - Shungo Furudoi
- Department of Oral Surgery, Konan Medical Center, Hyogo, Japan
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Fukami M, Matsutomo N, Yamamoto T. Optimization of Number of Iterations as a Reconstruction Parameter in Bone SPECT Imaging Using a Novel Thoracic Spine Phantom. J Nucl Med Technol 2020; 49:143-149. [PMID: 33361180 DOI: 10.2967/jnmt.120.253534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 12/10/2020] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to optimize the number of iterations in bone SPECT imaging using a novel thoracic spine phantom (ISMM phantom). Methods: The quality and quantitative accuracy of bone SPECT images were evaluated by changing the number of iterations and the size of the hot spot in the phantom. True SUVs in the vertebra, tumor, and background parts were 9.8, 52.2, and 1.0, respectively. The phantom image was reconstructed using the ordered-subset expectation-maximization algorithm with CT-based attenuation correction, scatter correction, and resolution recovery; the number of ordered-subset expectation-maximization subsets was fixed at 10, with iterations ranging from 1 to 40. Full width at half maximum, percentage coefficient of variation, contrast ratio for the sphere and background (contrast), and recovery coefficient were evaluated as a function of the number of iterations for a given number of subsets (10) using the reconstructed images. In addition, SUVmax, SUVpeak, and SUVmean were calculated with various numbers of iterations for each sphere (13, 17, 22, and 28 mm) simulating a tumor. Results: Full width at half maximum decreased as the number of iterations was increased, and full width at half maximum converged uniformly when the number of iterations exceeded 10. The percentage coefficient of variation increased as the number of iterations was increased. Recovery coefficient decreased with decreasing sphere size. Contrast and all SUVs increased as the number of iterations was increased, and contrast and all SUVs converged uniformly when the number of iterations exceeded 5 and 10, respectively, for all sphere sizes. When the SUV was defined as the converged value for 10 iterations in the 28-mm sphere, the converged values of SUVmax, SUVpeak, and SUVmean were 75.1, 66.5, and 55.6, respectively. The relative error in the converged values for SUVmax, SUVpeak, and SUVmean were 43.8%, 27.3%, and 7.2% of the true value (52.2); all SUVs were overestimated. Conclusion: Using a thoracic spine phantom to evaluate the optimal reconstruction parameters in bone SPECT imaging, we determined the optimal number of iterations for 10 subsets to be 10.
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Affiliation(s)
- Mitsuha Fukami
- Department of Medical Radiological Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Norikazu Matsutomo
- Department of Medical Radiological Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Tomoaki Yamamoto
- Department of Medical Radiological Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
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Hata H, Kitao T, Sato J, Asaka T, Imamachi K, Miyakoshi M, Hirata K, Magota K, Munakata Y, Shiga T, Yamazaki Y, Kitagawa Y. Quantitative bone single photon emission computed tomography analysis of the effects of duration of bisphosphonate administration on the parietal bone. Sci Rep 2020; 10:17461. [PMID: 33060659 PMCID: PMC7567830 DOI: 10.1038/s41598-020-74335-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 09/30/2020] [Indexed: 12/04/2022] Open
Abstract
Effects of long-term bisphosphonate (BP) administration on the metabolism of healthy bone and the concomitant changes in imaging are unclear. Hence, we aimed to retrospectively investigate the effects of long-term BP administration on the intact parietal bone using the standardised uptake value (SUV) derived from single photon emission computed tomography (SPECT). We enrolled 29 patients who had odontogenic infection, osteoporosis, bone metastasis cancer, or rheumatoid arthritis, and classified them into BP-naïve: A (14 patients) and BP-treated: B, < 4 years (7 patients) and C, ≥ 4 years (8 patients) groups. We measured the maximum bilateral SUV (SUVmax) of the parietal bone using quantitative bone SPECT software. There were significant differences in the duration of BP administration and SUVmax of the parietal bone among the diseases (P < 0.0001 and P = 0.0086, respectively). There was a positive correlation between the duration of BP administration and SUVmax of the parietal bone (rs = 0.65, P = 0.0002). The SUVmax was significantly different between A and B (P = 0.02) and between A and C (P = 0.0024) groups. This is the first report on the correlation between long-term BP administration and the SUVmax of the parietal bone using the quantitative bone SPECT analysis.
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Affiliation(s)
- Hironobu Hata
- Department of Dentistry and Oral Surgery, Hokkaido Cancer Center, 3-54, Kikusui4-Jyo 2-Tyoume, Shiroishi-Ku, Sapporo, Japan.
| | - Tomoka Kitao
- Department of Radiology, Hokkaido Medical Center, 1-1, Yamanote5-Jyo 7-Tyoume, Nishi-ku, Sapporo, Japan
| | - Jun Sato
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Nishi 7-Tyoume Kita13-Jyo, Kita-Ku, Sapporo, Japan
| | - Takuya Asaka
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Nishi 7-Tyoume Kita13-Jyo, Kita-Ku, Sapporo, Japan
| | - Kenji Imamachi
- Department of Dentistry and Oral Surgery, Hokkaido Cancer Center, 3-54, Kikusui4-Jyo 2-Tyoume, Shiroishi-Ku, Sapporo, Japan.,Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Nishi 7-Tyoume Kita13-Jyo, Kita-Ku, Sapporo, Japan
| | - Masaaki Miyakoshi
- Department of Maxillofacial Radiology, Graduate School of Medical and Dental Sciences, Kagoshima University, 1-35-8, Sakuragaoka, Kagoshima, Japan
| | - Kenji Hirata
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Nishi 7-Tyoume Kita15-Jyo, Kita-Ku, Sapporo, Japan
| | - Keiichi Magota
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Nishi 7-Tyoume Kita15-Jyo, Kita-Ku, Sapporo, Japan
| | - Yamato Munakata
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Nishi 7-Tyoume Kita15-Jyo, Kita-Ku, Sapporo, Japan
| | - Tohru Shiga
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, 1, Hikarigaoka, Fukushima, Japan
| | - Yutaka Yamazaki
- Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Nishi 7-Tyoume Kita13-Jyo, Kita-Ku, Sapporo, Japan
| | - Yoshimasa Kitagawa
- Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Faculty of Dental Medicine, Hokkaido University, Nishi 7-Tyoume Kita13-Jyo, Kita-Ku, Sapporo, Japan
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