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Guo RQ, Xiang X, Wang LY, Zhu BH, Huang SY, Tang XY, Chen JJ, Qiu L. Percutaneous contrast-enhanced ultrasound for localization and qualitative diagnosis of sentinel lymph nodes in cutaneous malignant melanoma of lower extremities: a preliminary study. Quant Imaging Med Surg 2022; 12:366-375. [PMID: 34993085 DOI: 10.21037/qims-21-249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/21/2021] [Indexed: 02/05/2023]
Abstract
Background To explore the feasibility of sentinel lymph node (SLN) tracing by percutaneous contrast-enhanced ultrasound (pCEUS) in patients with cutaneous malignant melanoma (CMM) and the ability to enhance patterns of SLNs in diagnosing lymph nodes (LNs) metastases. Methods Fifty-three patients with CMM of the lower extremities treated at our hospital were included in the study. All the participants received pCEUS preoperatively. The enhanced lymphatic channels (LCs) and associated SLNs were observed and tracked in real-time. The number of enhanced LCs and enhancing patterns of SLNs were recorded. Subsequently, SLNs localized by pCEUS were pathologically examined. Results Of the 53 cases, SLNs were successfully localized by pCEUS in 48 cases. In total, there were 59 detected SLNs averaging 1.23±0.42 SLNs per case. The main lymphatic drainage patterns (LDPs) were the following: one enhanced LC pointed to one or more than one SLN, and multiple enhanced LCs pointed to one or multiple SLNs. There were four enhancing patterns of SLNs (uniform, annular, uneven, and no enhancement), among which the first two were considered benign nodes, while the latter two were considered metastatic nodes. With pathological results as the gold standard, the diagnostic sensitivity and specificity by pCEUS were 90.9% and 75.0%, respectively. Conclusions Contrast-enhanced ultrasound (US) is a feasible approach for SLN identification in patients with CMM of the lower extremities. Enhancing patterns of SLNs may help predict metastasizing SLNs. This novel method may be a promising technique for clinical application.
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Affiliation(s)
- Rui-Qian Guo
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Xi Xiang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Li-Yun Wang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Bi-Hui Zhu
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Song-Ya Huang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Xin-Yi Tang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Jun-Jie Chen
- Plastic and Burn Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Li Qiu
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu, China
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Sun Y, Cui L, Wang S, Shi T, Hao Y, Lei Y. Comparative study of two contrast agents for intraoperative identification of sentinel lymph nodes in patients with early breast cancer. Gland Surg 2021; 10:1638-1645. [PMID: 34164308 DOI: 10.21037/gs-21-87] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background The use of contrast-enhanced ultrasound (CEUS) to locate sentinel lymph nodes (SLNs) in breast cancer has been studied more and more in recent years. This prospective study aimed to compare periareolar injection of two different contrast agents, SonoVue® (SNV) and Sonazoid® (SNZ), followed by CEUS to identify SLNs in breast cancer patients with clinically negative nodes. Methods A total of 205 patients with T1-2N0M0 breast cancer were divided into the SNV group and SNZ group. All were administered a periareolar injection of SNV or SNZ and underwent US to identify contrast-enhanced SLNs. Each contrast-enhanced SLN underwent a biopsy with blue dye and examined again by CEUS in vitro. Results In all cases, contrast-enhanced lymphatic vessels were clearly visualized using US soon after the periareolar injection of SNZ, and the SLNs were easily identified. The SLN identification rates were 75.27% (210/279) for SNV and 93.58% (102/109) for SNZ. Although the accuracy of detecting SLN metastasis was slightly different between the two groups, there was no statistically significant difference between those groups (P=0.615). Moreover, it was possible to identify SLNs in vitro in the SNZ group, and these could be compared with the lymph nodes (LNs) located using SNZ during the preoperative stage and with blue dye during the procedure. This helped in determining the resection requirements. Conclusions When comparing the subdermal use of SNV and SNZ, no significant differences in the number of detected SLNs and the diagnosis of metastatic LNs were observed. Because SLNs can be detected for a longer time in living tissues with SNZ, this contrast agent may provide more intraoperative information for complete resection of all preoperative localization of SLN.
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Affiliation(s)
- Yan Sun
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Ligang Cui
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Shunmin Wang
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Tan Shi
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Yunxia Hao
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Yutao Lei
- Department of General Surgery, Peking University Third Hospital, Beijing, China
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Zoller G, Hahn H, Di Girolamo N. Technological Advances in Diagnostic Imaging in Exotic Pet Medicine. Vet Clin North Am Exot Anim Pract 2019; 22:397-417. [PMID: 31395322 DOI: 10.1016/j.cvex.2019.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Diagnostic imaging relies on interpretation of interactions between the body tissue and various energies, such as x-rays, ultrasound, and magnetic or nuclear energies, to differentiate normal from abnormal tissues. Major technological improvements regarding emission and detection of the energetic waves, as well as reconstruction and interpretation of the images, have occurred. These advances made possible visualization of smaller structures, quantitative evaluation of functional processes, and development of unique imaging-guided procedures. This article reviews the technological advances that allowed development of cone beam computed tomography, dual-energy x-ray absorptiometry, and contrast-enhanced ultrasonography, which all could have applications in exotic pet medicine.
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Affiliation(s)
- Graham Zoller
- Exotic Pet Department, Centre Hospitalier Vétérinaire Frégis, 43 Avenue Aristide Briand, Arcueil 94110, France.
| | - Harriet Hahn
- Diagnostic Imaging Department, Centre Hospitalier Vétérinaire Frégis, 43 Avenue Aristide Briand, Arcueil 94110, France
| | - Nicola Di Girolamo
- Tai Wai Small Animal and Exotic Hospital, 69-75 Chik Shun Street, Tai Wai, Sha Tin, New Territories, Hong Kong
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Liu J, Liu X, He J, Gou B, Luo Y, Deng S, Wen H, Zhou L. Percutaneous contrast-enhanced ultrasound for localization and diagnosis of sentinel lymph node in early breast cancer. Sci Rep 2019; 9:13545. [PMID: 31537856 PMCID: PMC6753066 DOI: 10.1038/s41598-019-49736-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 08/30/2019] [Indexed: 01/07/2023] Open
Abstract
This study assessed the efficacy of percutaneous contrast-enhanced ultrasound (CEUS) in localization sentinel lymph node (SLNs) for biopsy and diagnosis of metastatic SLNs in patients with early breast cancer. From January to November 2017, seventy-five patients with early breast cancer confirmed by pathology were enrolled in this study. CEUS was performed after subdermal injection of ultrasound contrast agent (SonoVue, 2.0 ml in total dose) around the areola on the ipsilateral side of the breast. The contrast-enhanced lymphatic vessels and associated SLNs were observed and traced in real time. The lymphatic vessels and SLN were mapped and labeled on the skin surface. Sentinel lymph node biopsy (SLNB) was performed after injection of 2.0 ml methylene blue at same injection site of SonoVue. The accuracy of percutaneous CEUS localization of SLNs was determined compared to blue dye injection technique. The pathological results under blue dye guided biopsy were used as the reference standard to calculate the sensitivity and specificity of CEUS for the diagnosis of SLNs. A total of 163 SLNs obtained through SLNB following methylene blue tracing in 75 patients. There were 116 SLNs identified by percutaneous CEUS. The difference of detection rates between blue dye and CEUS was statistically significant (Z = -2.651, P = 0.008). The identification rate of SLNs by CEUS was 71.17% (116/163). The accuracy of percutaneous CEUS localization of axillary SLNs was 94.67% (71/75) compared to blue dye-guided biopsy. Among the 116 SLNs detected by percutaneous CEUS, pathologic results showed 51 positive SLNs and 65 negative SLNs whiles CEUS findings indicated 83 positive SLNs and 33 negative SLNs. Only 50 of 83 SLNs had metastasis on pathology, while 33 were detected as false positive. The sensitivity and specificity of CEUS for the diagnosis of metastatic SLN was 98.04%(50/51) and 49.23%(32/65), respectively. Percutaneous CEUS can be used as an effective method to localize the SLNs for guiding SLNB. This method has excellent sensitivity for identifying the SLNs but lower specificity for detecting metastatic SLNs in patients with early stage breast cancer.
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Affiliation(s)
- Jian Liu
- Department of Ultrasound, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, 610500, China.
| | - Xiaoling Liu
- Department of Ultrasound, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, 610500, China
| | - Jiao He
- Department of Ultrasound, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Bo Gou
- Department of Ultrasound, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, 610500, China
| | - Yujie Luo
- Department of Ultrasound, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Sihui Deng
- Department of Ultrasound, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Hong Wen
- Department of Ultrasound, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Lin Zhou
- Department of Ultrasound, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, China
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Malhotra P, Goel H, Mishra AK. Inflammatory lymphadenopathy in renal cell carcinoma: prognostic tool? ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:189. [PMID: 31205907 DOI: 10.21037/atm.2019.03.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Purnima Malhotra
- Department of Pathology, PGIMER & Dr RML Hospital, New Delhi, India
| | - Hemant Goel
- Department of Urology, PGIMER & Dr RML Hospital, New Delhi, India
| | - Ashwani Kumar Mishra
- Department of Biostatistics to National Drug Dependence Treatment Centre (NDDTC), All India Institute of Medical Sciences (AIIMS), New Delhi, India
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Hocke M, Ignee A, Dietrich C. Role of contrast-enhanced endoscopic ultrasound in lymph nodes. Endosc Ultrasound 2017; 6:4-11. [PMID: 28218194 PMCID: PMC5331842 DOI: 10.4103/2303-9027.190929] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 04/25/2016] [Indexed: 12/11/2022] Open
Abstract
Diagnosing unclear lymph node (LN) enlargements in the mediastinum and abdomen is the most important indication of endoscopic ultrasound (EUS)-fine needle aspiration (FNA) after the diagnosis and treatment of pancreatic diseases. Investigating LNs in these areas can happen in different clinical settings. Mostly, it is the first modality in general LN diseases without any peripheral LN enlargements. On the other hand, it can be the question of LN involvement in a known or suspected primary tumor. Due to EUS-FNA cytology, those questions can be answered highly, accurately. However, a primary discrimination of LNs might be helpful to increase the diagnostic value of the FNA cytology, especially in cases with multiple LN enlargements and hard to reach enlarged LNs for example by vessel interposition. Because of the unreliability of B-mode criteria, further diagnostic improvements such as elastography and contrast-enhanced EUS are investigated to increase the accuracy of the initial diagnosis.
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Affiliation(s)
- Michael Hocke
- Medical Department, Helios Klinikum Meiningen, D-98617 Meiningen, Germany
| | - Andre Ignee
- Medical Department, Caritas-Krankenhaus, D-97980 Bad Mergentheim, Germany
| | - Christoph Dietrich
- Medical Department, Caritas-Krankenhaus, D-97980 Bad Mergentheim, Germany
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Matsuzawa F, Omoto K, Einama T, Abe H, Suzuki T, Hamaguchi J, Kaga T, Sato M, Oomura M, Takata Y, Fujibe A, Takeda C, Tamura E, Taketomi A, Kyuno K. Accurate evaluation of axillary sentinel lymph node metastasis using contrast-enhanced ultrasonography with Sonazoid in breast cancer: a preliminary clinical trial. SPRINGERPLUS 2015; 4:509. [PMID: 26405629 PMCID: PMC4573976 DOI: 10.1186/s40064-015-1291-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 08/28/2015] [Indexed: 11/13/2022]
Abstract
Breast cancer is the most common type of cancer in women. The 5-year survival rate in patients with breast cancer ranges from 74 to 82 %. Sentinel lymph node biopsy has become an alternative to axillary lymph node dissection for nodal staging. We evaluated the detection of the sentinel lymph node and metastasis of the lymph node using contrast enhanced ultrasonography with Sonazoid. Between December 2013 and May 2014, 32 patients with operable breast cancer were enrolled in this study. We evaluated the detection of axillary sentinel lymph nodes and the evaluation of axillary lymph nodes metastasis using contrast enhanced computed tomography, color Doppler ultrasonography and contrast enhanced ultrasonography with Sonazoid. All the sentinel lymph nodes were identified, and the sentinel lymph nodes detected by contrast enhanced ultrasonography with Sonazoid corresponded with those detected by computed tomography lymphography and indigo carmine method. The detection of metastasis based on contrast enhanced computed tomography were sensitivity 20.0 %, specificity 88.2 %, PPV 60.0 %, NPV 55.6 %, accuracy 56.3 %. Based on color Doppler ultrasonography, the results were sensitivity 36.4 %, specificity 95.2 %, PPV 80.0 %, NPV 74.1 %, accuracy 75.0 %. Based on contrast enhanced ultrasonography with Sonazoid, the results were sensitivity 81.8 %, specificity 95.2 %, PPV 90.0 %, NPV 90.9 %, accuracy 90.6 %. The results suggested that contrast enhanced ultrasonography with Sonazoid was the most accurate among the evaluations of these modalities. In the future, we believe that our method would take the place of conventional sentinel lymph node biopsy for an axillary staging method.
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Affiliation(s)
- Fumihiko Matsuzawa
- Department of Surgery, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan ; Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-Ku, Sapporo, Hokkaido 060-8638 Japan
| | - Kiyoka Omoto
- Diagnostic Ultrasound Division, Department of Laboratory Medicine, Saitama Medical Center, Jichi Medical University, 1-847 Amanuma-cho, Omiya-ku, Saitama, 330-8503 Japan
| | - Takahiro Einama
- Department of Surgery, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Hironori Abe
- Department of Surgery, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Takashi Suzuki
- Department of Surgery, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Jun Hamaguchi
- Department of Surgery, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Terumi Kaga
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Mami Sato
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Masako Oomura
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Yumiko Takata
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Ayako Fujibe
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Chie Takeda
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Etsuya Tamura
- Department of Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
| | - Akinobu Taketomi
- Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-Ku, Sapporo, Hokkaido 060-8638 Japan
| | - Kenichi Kyuno
- Department of Surgery, Hokkaido Social Work Association Obihiro Hospital, 2 East 5 South 9, Obihiro, Hokkaido 080-0805 Japan
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Matsuzawa F, Einama T, Abe H, Suzuki T, Hamaguchi J, Kaga T, Sato M, Oomura M, Takata Y, Fujibe A, Takeda C, Tamura E, Taketomi A, Kyuno K. Accurate diagnosis of axillary lymph node metastasis using contrast-enhanced ultrasonography with Sonazoid. Mol Clin Oncol 2014; 3:299-302. [PMID: 25798257 DOI: 10.3892/mco.2014.483] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/16/2014] [Indexed: 01/23/2023] Open
Abstract
Axillary lymph node enlargement following sentinel lymph node biopsy (SLNB) is often difficult to accurately diagnose. In keeping with the characteristically tortuous and aberrant pattern of tumor neovasculature, metastatic lymph nodes exhibit peripheral and mixed vascularity, resulting in a microvasculature that is often difficult to visualize. Contrast-enhanced ultrasonography (CEUS) with Sonazoid, a new generation contrast agent for ultrasonography, allows for the visualization of lymph node microvessels and may enable a more accurate evaluation of lymph node metastasis. This is a case report of axillary lymph node enlargement following SLNB, in which CEUS with Sonazoid resulted in an accurate diagnosis. On the basis of our experience with this case, we have initiated a clinical trial to evaluate the detection of lymph node metastasis through the use of CEUS in breast cancer patients.
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Affiliation(s)
| | - Takahiro Einama
- Departments of Surgery, Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Hironori Abe
- Departments of Surgery, Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Takashi Suzuki
- Departments of Surgery, Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Jun Hamaguchi
- Departments of Surgery, Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Terumi Kaga
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Mami Sato
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Masako Oomura
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Yumiko Takata
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Ayako Fujibe
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Chie Takeda
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Etsuya Tamura
- Clinical Laboratory, Hokkaido Social Work Association Obihiro Hospital, Obihiro, Hokkaido 080-0805
| | - Akinobu Taketomi
- Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060-8638, Japan
| | - Kenichi Kyuno
- Departments of Surgery, Obihiro Hospital, Obihiro, Hokkaido 080-0805
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Moriwaki T, Oie T, Takamizawa K, Murayama Y, Fukuda T, Omata S, Nakayama Y. Surface density mapping of natural tissue by a scanning haptic microscope (SHM). J Med Eng Technol 2013; 37:96-101. [PMID: 23360191 DOI: 10.3109/03091902.2012.747008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
To expand the performance capacity of the scanning haptic microscope (SHM) beyond surface mapping microscopy of elastic modulus or topography, surface density mapping of a natural tissue was performed by applying a measurement theory of SHM, in which a frequency change occurs upon contact of the sample surface with the SHM sensor - a microtactile sensor (MTS) that vibrates at a pre-determined constant oscillation frequency. This change was mainly stiffness-dependent at a low oscillation frequency and density-dependent at a high oscillation frequency. Two paragon examples with extremely different densities but similar macroscopic elastic moduli in the range of natural soft tissues were selected: one was agar hydrogels and the other silicon organogels with extremely low (less than 25 mg/cm(3)) and high densities (ca. 1300 mg/cm(3)), respectively. Measurements were performed in saline solution near the second-order resonance frequency, which led to the elastic modulus, and near the third-order resonance frequency. There was little difference in the frequency changes between the two resonance frequencies in agar gels. In contrast, in silicone gels, a large frequency change by MTS contact was observed near the third-order resonance frequency, indicating that the frequency change near the third-order resonance frequency reflected changes in both density and elastic modulus. Therefore, a density image of the canine aortic wall was subsequently obtained by subtracting the image observed near the second-order resonance frequency from that near the third-order resonance frequency. The elastin-rich region had a higher density than the collagen-rich region.
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Affiliation(s)
- Takeshi Moriwaki
- Division of Medical Engineering and Materials, National Cerebral and Cardiovascular Center Research Institute, Fujishiro-dai, Osaka, Japan
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Garcia-Olivé I, Radua J, Serra P, Andreo F, Sanz-Santos J, Monsó E, Rosell A, Cases-Viedma E, Fernández-Villar A, Núñez-Delgado M, García-Luján R, Morera J, Ruiz-Manzano J. Intra- and interobserver agreement among bronchial endosonographers for the description of intrathoracic lymph nodes. ULTRASOUND IN MEDICINE & BIOLOGY 2012; 38:1163-1168. [PMID: 22579537 DOI: 10.1016/j.ultrasmedbio.2012.03.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 02/28/2012] [Accepted: 03/14/2012] [Indexed: 05/31/2023]
Abstract
Several sonographic features observed by endobronchial ultrasonography have been suggested to be useful to predict malignancy in mediastinal lymph nodes. To evaluate agreement to describe sonographic features, 28 video images were evaluated twice by eight expert bronchoscopists. The observers reviewed each case for the presence of coagulation necrosis sign (CNS), central hilar structure (CHS), heterogeneity, distinct margin, round shape, size >1 cm and malignancy. Intraobserver agreement was almost perfect for size (κ = 0.826), substantial for CNS (κ = 0.721) and shape (κ = 0.615), and moderate for CHS (κ = 0.565), heterogeneity (κ = 0.441) and margin (κ = 0.407). Interobserver agreement was substantial for size (κ = 0.641), moderate for shape (κ = 0.445), and fair for CNS (κ = 0.340) and margin (κ = 0.274). In conclusion, inter- and intraobserver agreement of the endosonographic features for mediastinal or hilar lymph nodes is good for shape or size but not good enough for the other ultrasonographic features.
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Affiliation(s)
- Ignasi Garcia-Olivé
- Respiratory Service, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
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