1
|
Santos R, Loft MK, Pedersen MRV. Elastography of the Male Pelvic Region-Perspectives on Malignant Lesions. Diagnostics (Basel) 2024; 14:1218. [PMID: 38928634 PMCID: PMC11202996 DOI: 10.3390/diagnostics14121218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 06/28/2024] Open
Abstract
Ultrasound elastography is widely used to assess tissue stiffness for lesion characterization, including differentiation between benign and malignant lesions. This study focuses on the use of elastography in the male pelvis, including the prostate, testicles, and rectum, by comparing elastography types (shear wave and strain). This article provides a summary of the existing literature on the use of elastography in the male pelvic region and outlines the clinical perspective. Ultrasound elastography is a good technique for evaluating and monitoring lesions in the male pelvic region.
Collapse
Affiliation(s)
- Rute Santos
- Medical Imaging and Radiotherapy Department, Coimbra Health School, Polytechnic University of Coimbra, 3045-093 Coimbra, Portugal
- H&TRC—Health & Technology Research Center, Coimbra Health School, Polytechnic University of Coimbra, 3045-093 Coimbra, Portugal
- CIPER-UC, University of Coimbra, 3004-531 Coimbra, Portugal
| | - Martina Kastrup Loft
- Department of Radiology, University Hospital of Southern Denmark, Vejle Hospital, Beriderbakken 4, 7100 Vejle, Denmark; (M.K.L.); (M.R.V.P.)
- Department of Radiology, University Hospital of Southern Denmark, Kolding Hospital, Sygehusvej 24, 6000 Kolding, Denmark
| | - Malene Roland Vils Pedersen
- Department of Radiology, University Hospital of Southern Denmark, Vejle Hospital, Beriderbakken 4, 7100 Vejle, Denmark; (M.K.L.); (M.R.V.P.)
- Department of Radiology, University Hospital of Southern Denmark, Kolding Hospital, Sygehusvej 24, 6000 Kolding, Denmark
- Department of Regional Health, Faculty of Health, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark
- Discipline of Medical Imaging & Radiation Therapy, School of Medicine, University College Cork, T12 AK54 Cork, Ireland
| |
Collapse
|
2
|
Javed N, Ghazanfar H, Jyala A, Patel H. Associations of Real-Time Ultrasound and Strain and Shear Wave Elastography with Gastrointestinal Organs: A Systematic Review. Diagnostics (Basel) 2023; 13:3302. [PMID: 37958199 PMCID: PMC10649379 DOI: 10.3390/diagnostics13213302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Ultrasound elastography is gaining attention for its diagnostic potential across various medical fields, and its physical properties make it valuable in modern clinical medicine. However, its specific attributes, especially in the context of recent medical advancements, remain relatively unexplored. This study aimed to identify instrument-specific characteristics and applications of real-time ultrasound elastography, shear wave elastography, and strain elastography, particularly within gastroenterology. Following PRISMA guidelines, the study examined elastography articles on databases like PubMed, resulting in 78 included articles. Data on patient demographics, organ involvement, specificity, sensitivity, accuracy, positive predictive value, and negative predictive value were extracted. Statistical analysis involved SPSS version 21, with significance set at p < 0.05. The majority of patients were male (50.50%), with a mean age of 42.73 ± 4.41 years. Shear wave elastography was the most prevalent technique (48.7%), and liver investigations were predominant in gastroenterology (34.6%). Gastrointestinal applications showed higher sensitivity, positive predictive value, and negative predictive values (p < 0.05) but lower specificity (p < 0.05). Real-time ultrasound elastography exhibited increased specificity, accuracy, and predictive values (p < 0.05). Ultrasound elastography appears more accurate and effective in gastroenterological settings. Nonetheless, its performance depends on instrument-specific and operator-dependent factors. While promising, further studies are necessary to ascertain optimal utilization in both gastrointestinal and non-gastrointestinal conditions.
Collapse
Affiliation(s)
- Nismat Javed
- Department of Internal Medicine, BronxCare Health System, Bronx, NY 10457, USA;
| | - Haider Ghazanfar
- Department of Gastroenterology, BronxCare Health System, Bronx, NY 10457, USA; (H.G.); (A.J.)
| | - Abhilasha Jyala
- Department of Gastroenterology, BronxCare Health System, Bronx, NY 10457, USA; (H.G.); (A.J.)
| | - Harish Patel
- Department of Gastroenterology, BronxCare Health System, Bronx, NY 10457, USA; (H.G.); (A.J.)
| |
Collapse
|
3
|
Dong XY, Li QM, Xue WL, Sun JW, Zhou H, Han Y, Zhou XL, Hou XJ. Diagnostic performance of endorectal ultrasound combined with shear wave elastography for rectal tumors staging. Clin Hemorheol Microcirc 2023; 84:399-411. [PMID: 37334584 DOI: 10.3233/ch-231716] [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: 06/20/2023]
Abstract
OBJECTIVE This study aims to analyze the performance of endorectal ultrasound (ERUS) combined with shear wave elastography (SWE) for rectal tumor staging. METHODS Forty patients with rectal tumors who had surgery were enrolled. They underwent ERUS and SWE examinations before surgery. Pathological results were used as the gold standard for tumor staging. The stiffness values of the rectal tumor, peritumoral fat, distal normal intestinal wall, and distal perirectal fat were analyzed. The diagnostic accuracy of ERUS stage, tumor SWE stage, ERUS combined with tumor SWE stage, and ERUS combined with peritumoral fat SWE stage were compared and evaluated by receiver operating characteristic (ROC) curve to select the best staging index. RESULTS From T1 to T3 stage, the maximum elasticity (Emax) of the rectal tumor increased gradually (p < 0.05). The cut-off values of adenoma/T1 and T2, T2 and T3 tumors were 36.75 and 85.15kPa, respectively. The diagnostic coincidence rate of tumor SWE stage was higher than that of ERUS stage. Overall diagnostic accuracy of ERUS combined with peritumoral fat SWE Emax restaging was significantly higher than that of ERUS. CONCLUSIONS ERUS combined with peritumoral fat SWE Emax for tumor restaging can effectively distinguish between stage T2 and T3 rectal tumors, which provides an effective imaging basis for clinical decisions.
Collapse
Affiliation(s)
- Xue-Ying Dong
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiang-Mei Li
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei-Li Xue
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jia-Wei Sun
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hang Zhou
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ye Han
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xian-Li Zhou
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiu-Juan Hou
- In-Patient Ultrasound Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| |
Collapse
|
4
|
Hu Z, Lu M, Wang X, Yang W, Fan Y, Li T, Wang L, Wei T. Diagnostic Value of Different 3-D Shear Wave Elastography Sections in the Diagnosis of Thyroid Nodules. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:1957-1965. [PMID: 35853762 DOI: 10.1016/j.ultrasmedbio.2022.05.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 05/23/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
The aim of the study was to explore the value of 3-D shear wave elastography (SWE) in differentiating malignant from benign thyroid nodules. A total of 188 patients with 216 nodules who underwent conventional ultrasound, 2-D SWE and 3-D SWE were included in this study. All patients underwent surgical excision, and the pathological results were the gold standard. Receiver operating characteristic (ROC) curves of the American College of Radiology's Thyroid Imaging Reporting and Data System (ACR TI-RADS), 2-D SWE and 3-D SWE were plotted, and the areas under the curves (AUCs) were compared using a Z-test. There were 62 benign thyroid nodules and 154 malignant thyroid nodules in this study. Young's modulus (Emin, Emean, Emax, Esd) values of thyroid malignant nodules in different sections of 2-D SWE and 3-D SWE were significantly higher than those of thyroid benign nodules (p < 0.001). The AUC of Emax in 2-D SWE transverse sections was significantly lower than that in 3-D SWE transverse sections and 3-D SWE sagittal sections (0.768 vs. 0.831 and 0.844, p < 0.05). The AUC of 3-D S-Emax combined with ACR TI-RADS was 0.859; the specificity increased from 54.84% to 85.71%, and the diagnostic accuracy increased from 74.54% to 85.19%, compared with ACR TI-RADS. The difference was statistically significant (p < 0.05). Three-dimensional SWE combined with ACR TI-RADS for the diagnosis of thyroid nodules significantly improved the diagnostic ability of ACR TI-RADS, and was significantly better than 2-D SWE combined with ACR TI-RADS.
Collapse
Affiliation(s)
- Ziyue Hu
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Man Lu
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
| | - Xu Wang
- Department of Head and Neck Surgery, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Wei Yang
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yuting Fan
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Tingting Li
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Lu Wang
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Ting Wei
- Department of Ultrasound, Sichuan Cancer Hospital Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| |
Collapse
|
5
|
Intra- and Interobserver Variability of Shear Wave Elastography in Rectal Cancer. Cancers (Basel) 2022; 14:cancers14112633. [PMID: 35681613 PMCID: PMC9179262 DOI: 10.3390/cancers14112633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/20/2022] [Accepted: 05/23/2022] [Indexed: 01/17/2023] Open
Abstract
Simple Summary For a diagnostic tool to be important, there must be a high level of agreement between different observers. If not, the reliability of the measurement can not be considered valid. Previous studies have evaluated the reproducibility of tissue stiffness measurements of rectal tumors, but only on previously obtained images. Therefore, we aimed to investigate the issue in a clinical setting and found a high level of agreement between observers. Abstract Background: Endorectal ultrasound (ERUS) is an important tool when evaluating complex rectal adenomas and rectal cancer, and the accuracy is improved by adding elastography measurements. A high interobserver agreement is imperative in clinical practice. Therefore, the aim of this study was to evaluate interobserver agreement assessed on real-time images. Additionally, we investigated the intra- and interobserver agreement between experienced and inexperienced observers. Materials and methods: We prospectively included patients referred to an ERUS at the Department of Radiology with a complex rectal polyp or suspected rectal malignancy. Two operators independently scanned each patient in turn. Furthermore, four observers assessed previously obtained images using three different methods for placing the region of interest (ROI). Three months later, the four observers reassessed the images to assess intraobserver variability. Results: A total of 19 patients were included for live assessment. Agreement of tumor classification was substantial for T stage (kappa: 0.86) and fair for N stage (kappa: 0.73), with an absolute agreement for T and N stages of 84% and 89%, respectively. Agreement of SWE was good for Emean (ICC 0.94, 95% CI 0.86–0.98) and fair for Emax (ICC 0.85, 95% CI 0.66–0.94). Intra- and interobserver agreement between inexperienced and experienced observers showed good to excellent agreement with all ROI methods. Conclusion: Interobserver agreement is high in SWE when performed in a clinical setting. We found the best agreement using the mean value of several ROIs. Intra- and interobserver agreement was high regardless of operator experience.
Collapse
|
6
|
Can Ultrasound Elastography Discriminate between Rectal Adenoma and Cancer? A Systematic Review. Cancers (Basel) 2021; 13:cancers13164158. [PMID: 34439313 PMCID: PMC8391413 DOI: 10.3390/cancers13164158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/07/2021] [Accepted: 08/12/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Rectal cancer is a common malignancy. Since the introduction of bowel-screening programs, the number of patients with advanced adenomas and early rectal cancer has increased. Despite improved diagnostics, the discrimination between rectal adenomas and early rectal cancer (i.e., pT1-T2) remains challenging. The purpose of this systematic review was to evaluate the diagnostic performance of endorectal ultrasound (ERUS) elastography in discriminating rectal adenomas from cancer. METHOD Using PRISMA guidelines, a systematic search was performed on PubMed, Embase, and MEDLINE databases. Studies evaluating the primary staging of rectal adenomas and cancer using ERUS elastography were included. RESULTS Six studies were identified; three evaluated the discrimination between adenomas and cancer; two evaluated adenomas and early rectal cancer (i.e., pT1-T2); one evaluated performance on different T categories. All studies reported increased diagnostic accuracy of ERUS elastography compared to ERUS. Sensitivity, specificity and accuracy ranged 0.93-1.00, 0.83-1.00 and 0.91-1.00, respectively, when discriminating adenomas from cancer. In the differentiation between adenomas and early rectal cancer, the sensitivity, specificity and accuracy were 0.82-1.00, 0.86-1.00 and 0.84-1.00, respectively. CONCLUSION Elastography increases the accuracy of ERUS and may provide valuable information on malignant transformation of rectal lesions.
Collapse
|
7
|
Endoscopic Ultrasound Elastography in the Assessment of Rectal Tumors: How Well Does It Work in Clinical Practice? Diagnostics (Basel) 2021; 11:diagnostics11071180. [PMID: 34209811 PMCID: PMC8305995 DOI: 10.3390/diagnostics11071180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/17/2021] [Accepted: 06/22/2021] [Indexed: 11/16/2022] Open
Abstract
Endorectal ultrasound applications in the evaluation of rectal tumors could be a useful tool in achieving proper staging of rectal cancer. The purpose of this study was to compare the efficacy of rectal tumor staging by flexible endoscopic ultrasound (EUS) with real-time elastography (RTE) using the gold standard post-surgery histological analysis of the resected tissue as the control. The second aim of our research was to establish cutoff values for the EUS-RTE strain ratio corresponding to stages by independently comparing the stiffness values obtained with histology and EUS-RTE staging in order to minimize observation bias. We evaluated the records of 130 patients with a rectal tumor confirmed by biopsy. EUS was used in 70 patients, EUS-RTE-in the other 60. We found no statistically significant differences in staging accuracy when comparing EUS to EUS-RTE. Through a correspondence method between staging assessment and the EUS-RTE stain ratio, we identified cutoff intervals for T2, T3, and T4 staging that were nonoverlapping and proved to be statistically significant in terms of EUS-RTE values (significantly different ascending values from one interval to the other). We found that EUS-RTE offers slightly better, although not statistically significant sensitivity and specificity for T and N stage predictions compared to 2D EUS. Our results showed that EUS-RTE offers slightly higher sensitivity and specificity compared to EUS. Reliable cutoff intervals were found for strain rate elastography, previously available only for shear wave elastography (SWE) which is currently unavailable on any EUS system. Thus, these commonly available EUS-RTE systems can serve as a complementary tool in the staging of rectal tumors.
Collapse
|
8
|
Zhao JY, Gao X, Zhuang H, Wu YT, Luo Y, Jing JG, Zhang Y. Using shear wave elasticity in normal terminal ileum of a healthy southwest Chinese population: a pilot study of reference elasticity ranges. Quant Imaging Med Surg 2021; 11:2677-2687. [PMID: 34079733 DOI: 10.21037/qims-20-877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Background Elastography has not been widely applied to the gastrointestinal tract. The bowel wall's normal elasticity values are still unknown and are necessary for studies of gastrointestinal diseases. This study explores the feasibility of using shear wave elastography (SWE) to measure the terminal ileum wall stiffness in healthy subjects and establish the corresponding normal ranges of elasticity values. Methods This observational study recruited 139 healthy adult volunteers from April to July 2020. All examinations were performed in the anterior terminal ileum wall. Shear wave velocity (SWV) and Young's modulus (E) values were measured in the midline on longitudinal sections and replicated different operators' obtained data. Also, bowel wall thickness (BWT) and depth were recorded. Subgroups were classified according to the volunteers' gender, age, body mass index (BMI), BWT, and depth. The intra-class correlation coefficient was calculated to analyze inter- and intra-operator consistency, and independent t-tests and one-way analysis of variance were used to explore the differences in variables. Results The inter- and intra-operator agreements were good to excellent by different operators and in the replicated measurements (intra-operator consistency: 0.963; inter-operator consistency: 0.842). In all volunteers, the mean SWV was 1.08±0.25 m/s, the mean E value was 3.84±1.84 kPa, and the median BWT was 2 mm. SWV and E did not show significant differences according to gender (P=0.589), age (P=0.738), BMI (P=0.678), depth (P=0.375), or BWT (P=0.410). BWT did not show significant differences according to age (P=0.142), BMI (P=0.863), or depth (P=0.368). Conclusions SWE can be used in terminal ileum wall stiffness measurements with good reliability, and the SWE values do not appear to vary significantly according to different physiological factors. The corresponding elasticity ranges of the terminal ileum in normal adults were acquired.
Collapse
Affiliation(s)
- Jie-Ying Zhao
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Xin Gao
- Department of Gastroenterology, West China Hospital of Sichuan University, Chengdu, China
| | - Hua Zhuang
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Yu-Ting Wu
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Yuan Luo
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Ji-Gang Jing
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Yan Zhang
- Department of Gastroenterology, West China Hospital of Sichuan University, Chengdu, China
| |
Collapse
|
9
|
Fan Z, Cong Y, Zhang Z, Li R, Wang S, Yan K. Shear Wave Elastography in Rectal Cancer Staging, Compared with Endorectal Ultrasonography and Magnetic Resonance Imaging. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:1586-1593. [PMID: 31085029 DOI: 10.1016/j.ultrasmedbio.2019.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 03/01/2019] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
The goal of the study described here was to investigate the value of shear wave elastography (SWE) in pre-operative staging of rectal cancer. Fifty-five patients with rectal cancer underwent pre-operative conventional endorectal ultrasonography (ERUS), SWE and enhanced magnetic resonance imaging (MRI) examinations. Pathologic results were used as the gold standard for cancer staging. The concordance rate with pathologic stage by ERUS and MRI and the stiffness values measured by SWE for tumors in different stages were compared. The concordance rates for cancer staging were 72.7% and 70.9% for conventional ERUS and enhanced MRI, respectively; the difference was not significant (p > 0.05). SWE indicated that the mean and maximum stiffness values of the tumors increased with advance in stage. The differences in stiffness values between T1 and T2, T1 and T3-4, as well as T2 and T3-4, were all statistically significant (p < 0.001). When the maximum stiffness values of 65.0 and 90.7 kPa are used for the diagnosis of T1, T2 and local advanced rectal cancer, the concordance rate of cancer staging was 85.5%, which was slightly higher than those of ERUS and MRI, although the difference was not statistically significant (p > 0.05). SWE is useful in judging the depth of invasion of rectal tumors. The value of tumor stiffness can provide a quantifiable indicator for pre-operative diagnosis of cancer staging and can be used as a supplement to conventional ERUS. Further studies with larger sample sizes are needed.
Collapse
Affiliation(s)
- Zhihui Fan
- Department of Ultrasound, Key Laboratory of the Ministry of Education for Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yue Cong
- Department of Ultrasound, Key Laboratory of the Ministry of Education for Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Zhongyi Zhang
- Department of Ultrasound, Key Laboratory of the Ministry of Education for Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Rongjie Li
- Department of Ultrasound, Key Laboratory of the Ministry of Education for Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Song Wang
- Department of Ultrasound, Key Laboratory of the Ministry of Education for Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Kun Yan
- Department of Ultrasound, Key Laboratory of the Ministry of Education for Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China.
| |
Collapse
|