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Yao J, Jiang W, Zhang H, Fan Z, Zhang W, Zhuang S, Wang J. Visual assessment and quantitative analysis of bone marrow edema in young and middle-aged versus elderly patients with vertebral compression fracture by spectral CT. Acta Radiol 2024; 65:49-55. [PMID: 36575593 DOI: 10.1177/02841851221146977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND For the diagnosis of bone marrow edema (BME), spectral computed tomography (CT) has emerged as a promising technique. PURPOSE To study the different performances of spectral CT in the diagnosis of vertebral BME in young and middle-aged versus elderly patients. MATERIAL AND METHODS Magnetic resonance imaging (MRI) was used as the gold standard. To determine the existence of BME, spectral CT color-coded images of the vertebral bodies of 82 patients with vertebral compression fractures (VCFs) were visually inspected. A quantitative analysis of the spectral CT vertebral water concentration in the diagnosis of BME was performed using a receiver operating characteristic (ROC) curve. Patients were divided into two groups for comparison: the young and middle-aged group; and the elderly group. RESULTS The sensitivity and specificity for visual assessment were 83.7% and 98.3%, respectively, in the young and middle-aged group and 96.8% and 98.2%, respectively, in the elderly group. The elderly group had a higher sensitivity than the young and middle-aged group (P < 0.05). With a threshold of 1046.2 mg/cm3, the ROC curve for the young and middle-aged group displayed an area under the curve (AUC) of 0.870, sensitivity of 86.0%, and specificity of 81.4%. The threshold of 1031.4 mg/cm3 yielded a sensitivity of 95.2% and a specificity of 98.4%, and the AUC of the elderly group was 0.997. The elderly group had a higher level of specificity than the young and middle-aged group (P < 0.05). CONCLUSION Spectral CT can reliably diagnose BME in VCFs, and it performs better in elderly people than in young and middle-aged people.
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Affiliation(s)
- Junpeng Yao
- Department of Radiology, Changzhou Municipal Hospital of Traditional Chinese Medicine, Changzhou, PR China
| | - Wanli Jiang
- First School of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, PR China
| | - Hong Zhang
- Department of Radiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, PR China
| | - Zijian Fan
- Department of Radiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, PR China
| | - Wei Zhang
- Department of Radiology, Changzhou Municipal Hospital of Traditional Chinese Medicine, Changzhou, PR China
| | - Shunda Zhuang
- Department of Radiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, PR China
| | - Jianguo Wang
- Department of Radiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, PR China
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Hu H, Zheng S, Hou M, Zhu K, Chen C, Wu Z, Qi L, Ren Y, Wu B, Xu Y, Yan C, Zhao B. Functionalized Au@Cu-Sb-S Nanoparticles for Spectral CT/Photoacoustic Imaging-Guided Synergetic Photo-Radiotherapy in Breast Cancer. Int J Nanomedicine 2022; 17:395-407. [PMID: 35115774 PMCID: PMC8800589 DOI: 10.2147/ijn.s338085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 01/06/2022] [Indexed: 11/23/2022] Open
Abstract
Background Radiotherapy (RT) is clinically well-established cancer treatment. However, radioresistance remains a significant issue associated with failure of RT. Phototherapy-induced radiosensitization has recently attracted attention in translational cancer research. Methods Cu-Sb-S nanoparticles (NPs) coated with ultra-small Au nanocrystals (Au@Cu-Sb-S) were synthesized and characterized. The biosafety profiles, absorption of near-infrared (NIR) laser and radiation-enhancing effect of the NPs were evaluated. In vitro and in vivo spectral computed tomography (CT) imaging and photoacoustic (PA) imaging were performed in 4T1 breast cancer-bearing mice. The synergetic radio-phototherapy was assessed by in vivo tumor inhibition studies. Results Au@Cu-Sb-S NPs were prepared by in situ growth of Au NCs on the surface of Cu-Sb-S NPs. The cell viability experiments showed that the combination of Au@Cu-Sb-S+NIR+RT was significantly more cytotoxic to tumor cells than the other treatments at concentrations above 25 ppm Sb. In vitro and in vivo spectral CT imaging demonstrated that the X-ray attenuation ability of Au@Cu-Sb-S NPs was superior to that of the clinically used Iodine, particularly at lower KeV levels. Au@Cu-Sb-S NPs showed a concentration-dependent and remarkable PA signal brightening effect. In vivo tumor inhibition studies showed that the prepared Au@Cu-Sb-S NPs significantly suppressed tumor growth in 4T1 breast cancer-bearing mice treated with NIR laser irradiation and an intermediate X-ray dose (4 Gy). Conclusion These results indicate that Au@Cu-Sb-S integrated with spectral CT, PA imaging, and phototherapy-enhanced radiosensitization is a promising multifunctional theranostic nanoplatform for clinical applications.
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Affiliation(s)
- Honglei Hu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Shuting Zheng
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Meirong Hou
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Kai Zhu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Chuyao Chen
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Zede Wu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Li Qi
- Guangdong Provincial Key Laboratory of Medical Image Processing, Guangdong Province Engineering Laboratory for Medical Imaging and Diagnostic Technology, School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Yunyan Ren
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Bin Wu
- Institute of Respiratory Diseases, Respiratory Department, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Yikai Xu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Chenggong Yan
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
| | - Bingxia Zhao
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Experimental Education/Administration Center, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, People’s Republic of China
- Correspondence: Bingxia Zhao; Yikai Xu, Tel +86 20 61647272; +86 20 62787333, Email ;
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