1
|
Zhang X, Chen Z, You J, Lu Q, Liu L, Cai D. Clinical practice of the transrectal shear-wave elastography in benign prostatic hyperplasia. Aging Male 2024; 27:2363267. [PMID: 38867423 DOI: 10.1080/13685538.2024.2363267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 05/29/2024] [Indexed: 06/14/2024] Open
Abstract
OBJECTIVE To investigate the practical value of the transrectal two-dimensional shear-wave elastography (SWE) in benign prostatic hyperplasia (BPH). METHODS Consecutive male participants with and without BPH constituted the BPH and control group respectively were enrolled prospectively between March and December 2022. Transrectal conventional ultrasound and SWE examinations for the prostate were performed on these participants. Data of quantitative stiffness of the transitional zone (TZ) and peripheral zone (PZ) of prostate, volume of prostate (VP) and volume of TZ (VTZ) and prostate specific androgen (PSA), etc., were collected. Linear regression analyses were used to investigate the associations between quantitative stiffness data and other clinical parameters. RESULTS There were 200 participants evaluated, including 100 healthy participants and 100 BPH patients. For every one-year increment in age, it was correlated with 0.50 kPa increasement of TZ stiffness. VP and VTZ were correlated with TZ stiffness. Higher TZ stiffness was associated with higher free prostate specific antigen (PSA) and total PSA. CONCLUSIONS The prostate is stiffer and larger in BPH group compared to control group. Quantitative stiffness of the TZ was related with age, VP, VTZ and PSA.
Collapse
Affiliation(s)
- Xuhui Zhang
- Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, China
| | - Zeyu Chen
- Department of Urology Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Jia You
- Department of Urology Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Qiang Lu
- Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, China
| | - Liangren Liu
- Department of Urology Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Diming Cai
- Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, China
| |
Collapse
|
2
|
Almutairi FF. The feasibility of point shear wave elastography (pSWE) in the assessment of pancreas stiffness in diabetic patients and healthy volunteers. PLoS One 2024; 19:e0303098. [PMID: 38857243 PMCID: PMC11164356 DOI: 10.1371/journal.pone.0303098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 04/17/2024] [Indexed: 06/12/2024] Open
Abstract
Type 1 diabetes mellitus (T1DM) is an autoimmune disease characterized by the dysfunctional metabolism of carbohydrates, fats, and proteins caused by impaired insulin secretion and insulin resistance. This study investigated the feasibility of using point shear wave elastography (pSWE) of the pancreas by comparing the shear wave velocity (SWV) measurements of three anatomical areas in patients with T1DM and healthy volunteers. This study included 30 patients with T1DM (9 male, 21 female) and 23 healthy controls (11 men, 12 women). Two experienced certified operators performed the examinations and took the SWV measurements. The mean SWV of the entire pancreas parenchyma differed significantly between patients and controls (1.1 ± 0.29 and 0.74 ± 0.19 m/s, respectively; p ≤ 0.001). Moreover, the SWVs of the pancreatic segments were significantly different in patients and controls; the mean SWV values of the pancreas head, body, and tail (respectively) in patients vs. controls were 0.99 ± 0.36 vs. 0.76 ± 0.26 m/s (p = 0.012), 1.1 ± 0.52 vs. 0.74 ± 0.23 (p ≤ 0.001), and 1.0 ± 0.34 vs. 0.73 ± 0.28 (p ≤ 0.001). This study confirmed the feasibility of quantifying pancreas tissue stiffness with pSWE and revealed that patients with T1DM had higher pancreas tissue stiffness than controls. Further studies are required to determine the potential value of pSWE as a screening tool in patients with prediabetes.
Collapse
Affiliation(s)
- Fahad Farhan Almutairi
- Department of Radiologic Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Animal House Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Smart Medical Imaging Research Group, King Abdulaziz University, Jeddah, Saudi Arabia
- Medical Imaging and Artificial Intelligence Research Unit, Center of Modern Mathematical Sciences and its Applications, King Abdulaziz University, Jeddah, Saudi Arabia
| |
Collapse
|
3
|
Ponomarchuk EM, Rosnitskiy PB, Tsysar SA, Khokhlova TD, Karzova MM, Kvashennikova AV, Tumanova KD, Kadrev AV, Buravkov SV, Trakhtman PE, Starostin NN, Sapozhnikov OA, Khokhlova VA. Elastic Properties of Aging Human Hematoma Model In Vitro and Its Susceptibility to Histotripsy Liquefaction. ULTRASOUND IN MEDICINE & BIOLOGY 2024; 50:927-938. [PMID: 38514363 DOI: 10.1016/j.ultrasmedbio.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 02/10/2024] [Accepted: 02/26/2024] [Indexed: 03/23/2024]
Abstract
OBJECTIVE Tissue susceptibility to histotripsy disintegration has been reported to depend on its elastic properties. This work was aimed at investigation of histotripsy efficiency for liquefaction of human hematomas, depending on their stiffness and degree of retraction over time (0-10 d). METHODS As an in vitro hematoma model, anticoagulated human blood samples (200 mL) were recalcified at different temperatures. In one set of samples, the shear modulus was measured by shear wave elastography during blood clotting at 10℃, 22℃ and 37℃, and then daily during further aging. The ultrastructure of the samples was analyzed daily with scanning electron microscopy (SEM). Another set of blood samples (50-200 mL) were recalcified at 37℃ for density and retraction measurements over aging and exposed to histotripsy at varying time points. Boiling histotripsy (2.5 ms pulses) and hybrid histotripsy (0.2 ms pulses) exposures (2 MHz, 1% dc, P+/P-/As = 182/-27/207 MPa in situ) were used to produce either individual cigar-shaped or volumetric (0.8-3 mL) lesions in samples incubated for 3 h, 5 d and 10 d. The obtained lesions were sized, then the lysate aspirated under B-mode guidance was analyzed ultrastructurally and diluted in distilled water for sizing of residual fragments. RESULTS It was found that clotting time decreased from 113 to 25 min with the increase in blood temperature from 10℃ to 37℃. The shear modulus increased to 0.53 ± 0.17 kPa during clotting and remained constant within 8 d of incubation at 2℃. Sample volumes decreased by 57% because of retraction within 10 d. SEM revealed significant echinocytosis but unchanged ultrastructure of the fibrin meshwork. Liquefaction rate and lesion dimensions produced with the same histotripsy protocols correlated with the increase in the degree of retraction and were lower in retracted samples versus freshly clotted samples. More than 80% of residual fibrin fragments after histotripsy treatment were shorter than 150 µm; the maximum length was 208 µm, allowing for unobstructed aspiration of the lysate with most clinically used needles. CONCLUSION The results indicate that hematoma susceptibility to histotripsy liquefaction is not entirely determined by its stiffness, and correlates with the retraction degree.
Collapse
Affiliation(s)
| | - Pavel B Rosnitskiy
- Division of Gastroenterology, Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Sergey A Tsysar
- Physics Faculty, Lomonosov Moscow State University, Moscow, Russia
| | - Tatiana D Khokhlova
- Division of Gastroenterology, Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Maria M Karzova
- Physics Faculty, Lomonosov Moscow State University, Moscow, Russia
| | | | | | - Alexey V Kadrev
- Department of Urology and Andrology, Medical Research and Educational Center, Lomonosov Moscow State University, Moscow, Russia; Diagnostic Ultrasound Division, Russian Medical Academy of Continuous Professional Education, Moscow, Russia
| | - Sergey V Buravkov
- Faculty of Fundamental Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Pavel E Trakhtman
- National Medical Research Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Nicolay N Starostin
- National Medical Research Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Oleg A Sapozhnikov
- Physics Faculty, Lomonosov Moscow State University, Moscow, Russia; Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Vera A Khokhlova
- Physics Faculty, Lomonosov Moscow State University, Moscow, Russia; Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| |
Collapse
|
4
|
Dündar İ, Özkaçmaz S, Demir M, Özgökçe M, Durmaz F, Özkaçmaz A, Taken K, Göya C. Radiological Evidence of Testicular Damage in Severe Acute Respiratory Syndrome Coronavirus 2 Infection: A Sonoelastography's Potential Role. Ultrasound Q 2023; 39:145-151. [PMID: 36728735 DOI: 10.1097/ruq.0000000000000632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
ABSTRACT This preliminary study aimed to evaluate the possible damage to the male reproductive system that the severe acute respiratory syndrome coronavirus 2 virus causes by quantitatively measuring and comparing the tissue stiffness of the testis and epididymis with acoustic radiation force impulse sonoelastography in patients who have COVID-19 with a healthy control group. This prospective study was conducted between February and July 2021 with 65 cases. We used sonoelastography to evaluate male patients 18 years or older, who had applied to the urology clinic with nontesticular complaints, and were found to not have any underlying testicular pathology after a clinical-laboratory evaluation. The clinical-laboratory imaging findings and reverse transcription-polymerase chain reaction test results of all patients diagnosed with COVID-19 were reviewed from the hospital database. We measured the shear wave velocity values of the epididymis and the testes of 31 proven severe acute respiratory syndrome coronavirus 2 patients and 34 healthy subjects and compared them with an independent t test. For the patient and control group subjects, the mean age was 37.55 ± 13.08 (23-71) and 40.5 ± 16.25 (18-81) years, respectively. The mean shear wave velocity values of the left-right and bilateral testes and epididymis of the patient group were statistically substantially higher ( P ˂ 0.05) than in the control group. In the receiver operating characteristic analysis, when the cutoff values for the bilateral testes and epididymis were determined as 1.39 and 1.64 m/s, respectively, the AUC was 77% to 73.4%, the sensitivity was 87% to 74%, and the specificity was 65% to 62%. Our findings show that testicular and epididymal tissue stiffness increased in patients with COVID-19. We recommend adding sonoelastography to urogenital examinations of male reproductive system in patients who are recovering from COVID-19.
Collapse
Affiliation(s)
| | | | | | | | | | - Ayşe Özkaçmaz
- Microbiology, Medical Faculty, Van Yüzüncü Yıl University, Van, Turkey
| | | | | |
Collapse
|
5
|
Chan DY, Morris DC, Polascik TJ, Palmeri ML, Nightingale KR. Combined ARFI and Shear Wave Imaging of Prostate Cancer: Optimizing Beam Sequences and Parameter Reconstruction Approaches. ULTRASONIC IMAGING 2023; 45:175-186. [PMID: 37129257 PMCID: PMC10660585 DOI: 10.1177/01617346231171895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
This study demonstrates the implementation of a shear wave reconstruction algorithm that enables concurrent acoustic radiation force impulse (ARFI) imaging and shear wave elasticity imaging (SWEI) of prostate cancer and zonal anatomy. The combined ARFI/SWEI sequence uses closely spaced push beams across the lateral field of view and simultaneously tracks both on-axis (within the region of excitation) and off-axis (laterally offset from the excitation) after each push beam. Using a large number of push beams across the lateral field of view enables the collection of higher signal-to-noise ratio (SNR) shear wave data to reconstruct the SWEI volume than is typically acquired. The shear wave arrival times were determined with cross-correlation of shear wave velocity signals in two dimensions after 3-D directional filtering to remove reflection artifacts. To combine data from serially interrogated lateral push locations, arrival times from different pushes were aligned by estimating the shear wave propagation time between push locations. Shear wave data acquired in an elasticity lesion phantom and reconstructed using this algorithm demonstrate benefits to contrast-to-noise ratio (CNR) with increased push beam density and 3-D directional filtering. Increasing the push beam spacing from 0.3 to 11.6 mm (typical for commercial SWEI systems) resulted in a 53% decrease in CNR. In human in vivo data, this imaging approach enabled high CNR (1.61-1.86) imaging of histologically-confirmed prostate cancer. The in vivo images had improved spatial resolution and CNR and fewer reflection artifacts as a result of the high push beam density, the high shear wave SNR, the use of multidimensional directional filtering, and the combination of shear wave data from different push beams.
Collapse
Affiliation(s)
- Derek Y. Chan
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - D. Cody Morris
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | | | - Mark L. Palmeri
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | | |
Collapse
|
6
|
Voutouri C, Mpekris F, Panagi M, Krolak C, Michael C, Martin JD, Averkiou MA, Stylianopoulos T. Ultrasound stiffness and perfusion markers correlate with tumor volume responses to immunotherapy. Acta Biomater 2023:S1742-7061(23)00332-X. [PMID: 37321529 DOI: 10.1016/j.actbio.2023.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 05/18/2023] [Accepted: 06/08/2023] [Indexed: 06/17/2023]
Abstract
Immunotherapy has revolutionized the treatment of dozens of cancers and became a standard of care for some tumor types. However, the majority of patients do not benefit from current immunotherapeutics and many develop severe toxicities. Therefore, the identification of biomarkers to classify patients as likely responders or non-responders to immunotherapy is a timely task. Here, we test ultrasound imaging markers of tumor stiffness and perfusion. Ultrasound imaging is non-invasive and clinically available and can be used both for stiffness and perfusion evaluation. In this study, we employed syngeneic orthotopic models of two breast cancers, a fibrosarcoma and melanoma, to demonstrate that ultrasound-derived measures of tumor stiffness and perfusion (i.e., blood volume) correlate with the efficacy of immune checkpoint inhibition (ICI) in terms of changes in primary tumor volume. To modulate tumor stiffness and perfusion and thus, get a range of therapeutic outcomes, we employed the mechanotherapeutic tranilast. Mechanotherapeutics combined with ICI are advancing through clinical trials, but biomarkers of response have not been tested until now. We found the existence of linear correlations between tumor stiffness and perfusion imaging biomarkers as well as strong linear correlations between the stiffness and perfusion markers with ICI efficacy on primary tumor growth rates. Our findings set the basis for ultrasound imaging biomarkers predictive of ICI therapy in combination with mechanotherapeutics. STATEMENT OF SIGNIFICANCE: Hypothesis: Monitoring Tumor Microenvironment (TME) mechanical abnormalities can predict the efficacy of immune checkpoint inhibition (ICI) and provide biomarkers predictive of response. Tumor stiffening and solid stress elevation are hallmarks of tumor patho-physiology in desmoplastic tumors. They induce hypo-perfusion and hypoxia by compressing tumor vessels, posing major barriers to immunotherapy. Mechanotherapeutics is a new class of drugs that target the TME to reduce stiffness and improve perfusion and oxygenation. In this study, we show that measures of stiffness and perfusion derived from ultrasound shear wave elastography and contrast enhanced ultrasound can provide biomarkers of tumor response.
Collapse
Affiliation(s)
- Chrysovalantis Voutouri
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus
| | - Fotios Mpekris
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus
| | - Myrofora Panagi
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus
| | - Connor Krolak
- Department of Bioengineering, University of Washington, Seattle, WA, United States
| | - Christina Michael
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus
| | | | | | | |
Collapse
|
7
|
Song J, Li J, Luo Y, Lu Q. Can Location of Stiffness Measurement Impact Spleen 2-Dimensional Shear Wave Elastography Measurement? Ultrasound Q 2022; 38:155-159. [PMID: 35348535 PMCID: PMC9172890 DOI: 10.1097/ruq.0000000000000602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 01/13/2022] [Indexed: 02/05/2023]
Abstract
ABSTRACT Ultrasound-based spleen elastography is a promising surrogate to predict portal hypertension noninvasively. In contrast to defined standards for liver stiffness measurement, the standardized examination procedures for 2-dimensional (2D) shear wave elastography spleen elastography have not been established yet. The aim was to investigate the impact of location of stiffness measurement on 2D shear wave elastography spleen stiffness measurement (SSM). Patients with splenomegaly were enrolled. Both B-mode ultrasound and elastography of spleen were performed. For SSM, 3 regions were chosen for spleen measurement: lower pole region, central region, and the region between lower pole and center. Mean SSM value, success rate, and reliability predicators (standard deviation, standard deviation/mean, size of region of interest) were assessed. A total of 124 patients were included. For mean SSM value, there were no significant differences among 3 regions. Spleen stiffness measurement success rate in lower pole region, central region, and the region between them was 63.7% (79), 91.1% (113), and 78.2% (97), respectively. The success rate in the central region was significantly higher than that in the other 2 regions (P < 0.05). Reliability in the central region was also highest among the 3 regions. Location of stiffness measurement has a limited effect on SSM. Changing location of measurement will not influence mean stiffness value in spleen.
Collapse
Affiliation(s)
- Jinzhen Song
- Department of Abdominal Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Jiawu Li
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Yan Luo
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| | - Qiang Lu
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, China
| |
Collapse
|
8
|
Zhou Q, Xu P, Ding H, Wang Y, Fu L, Wang B, Liu D. Application value of gray-scale ultrasound and shear wave elastography in differential diagnosis of thyroid nodules. Technol Health Care 2022; 30:1043-1054. [PMID: 35342061 DOI: 10.3233/thc-213137] [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: 12/07/2022]
Abstract
BACKGROUND The global prevalence of thyroid cancer has increased significantly in recent years. Ultrasonography is the preferred method for differentiating benign and malignant thyroid nodules preoperatively and is recommended by guidelines. OBJECTIVE To assess the application value of gray-scale ultrasound and shear wave elastography in distinguishing small thyroid nodules. METHODS A retrospective analysis of 228 thyroid nodules, all of which were confirmed by pathology after surgery or FNA from January 2019 to January 2020, was carried out. All nodules were divided into a ⩽ 5 mm group and a > 5 mm group according to their maximum size. We compared the differences in the gray scale and elastography of the nodules between the two groups and the accuracy of different diagnostic methods. RESULTS The accuracies of gray-scale ultrasound and shear wave elastography in the ⩽ 5 mm group were found to be lower than those in the > 5 mm group, and the gray-scale accuracy was slightly higher than that of shear wave elastography in both groups (p< 0.05). The largest AUC (area under the curve) of elastic parameters in the ⩽ 5 mm and > 5 mm groups was found for Emax and Esd, respectively. Based on a combination of these two parameters, the accuracies of the two groups were significantly higher than those of the parameters or gray scale alone (p< 0.05) and were 84.62% and 85.48%, respectively. CONCLUSION Shear wave elastography is valuable in the diagnosis of benign and malignant thyroid nodules using ultrasonography. When combining gray-scale ultrasound and shear wave elastography, the diagnostic accuracy is obviously improved, especially for ⩽ 5 mm small thyroid nodules.
Collapse
|
9
|
Vora Z, Manchanda S, Sharma R, Das CJ, Hari S, Mathur S, Kumar S, Kachhawa G, Khan MA. Transvaginal Shear Wave Elastography for Assessment of Endometrial and Subendometrial Pathologies: A Prospective Pilot Study. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:61-70. [PMID: 33645765 DOI: 10.1002/jum.15679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/12/2021] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To assess the role of shear wave elastography (SWE) in characterizing different endometrial and subendometrial pathologies. METHODS Seventy-three women with pathologically proven endometrial and subendometrial pathologies were enrolled in this prospective study and assessed with transvaginal SWE. The elasticity values (in kiloPascals), and the ratio of mean elasticity of the endometrial lesion to myometrial elasticity (E/M ratio) were compared in different pathologies. RESULTS There was a statistically significant difference (P <.001) in the mean, minimum, and maximum elasticity of the pathologies as well as the E/M ratio (P <.00001). In the analysis of the subgroups, the mean elasticity of endometrial polyp was statistically significantly lower than other subgroups (P <.01), while submucosal leiomyoma and focal adenomyoma had significantly higher values than other subgroups (P <.01). No statistically significant difference was noted in the mean elasticity of carcinoma and hyperplasia (P-.19). CONCLUSION SWE is a potential adjunct to ultrasound that provides an additional paradigm to characterize endometrial and subendometrial masses.
Collapse
Affiliation(s)
- Zainab Vora
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | - Smita Manchanda
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | - Raju Sharma
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | - Chandan Jyoti Das
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | - Smriti Hari
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
| | - Sandeep Mathur
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Sunesh Kumar
- Department of Gynaecology-Obstetrics, All India Institute of Medical Sciences, New Delhi, India
| | - Garima Kachhawa
- Department of Gynaecology-Obstetrics, All India Institute of Medical Sciences, New Delhi, India
| | - Maroof Ahmad Khan
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
10
|
Min X, Zhu J, Shang M, Liu J, Zhang K, Guo L, Li L, Cheng L, Li J. Stiffness Could be a Predictor of AJCC Prognostic Stage Groups in Preoperative Invasive Ductal Carcinoma. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2021; 40:2665-2674. [PMID: 33629753 DOI: 10.1002/jum.15657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/23/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVES This study aimed to evaluate the stiffness of 2-dimensional (2D) shear wave elastography (SWE) in preoperatively predicting the prognostic stage groups of invasive ductal carcinoma (IDC). METHODS Eighty-six newly diagnosed lesions on 83 patients with IDCs were analyzed. All parameters from conventional ultrasound and stiffness to virtual touch tissue imaging and quantification were collected, and mean shear wave velocity (SWVmean) was calculated. Data on maximum diameter, estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), histologic grading system and Tumor Node Metastasis (TNM) stages were collected. The levels of maximum shear wave velocity (SWVmax), minimum shear wave velocity (SWVmin) and SWVmean were compared. In receiver operating characteristic (ROC) curves analysis, the diagnostic efficacy was found in area under the curve (AUC). Parallel mode was used to improve the predictive value of sensitivity. RESULTS The median stiffness of SWVmax and SWVmean for IDCs were 9.38 and 6.32 m/s for late stage (stages II, III, IV) and 6.39 m/s and 4.72 m/s for early stage (stage I) of the prognostic stage groups, respectively. The median stiffness values in the late stage were significantly higher than those in the early stage (P = .003, P = .005). The optimal cutoff stiffness of SWVmax and SWVmean were 8.62 and 6.13 m/s, respectively. In ROC curves analysis, the AUC for SWVmax was 0.742, and it showed a better diagnostic value than SWVmean (0.725). In predictive diagnosis, the sensitivity for SWVmax and SWVmean were both 62.50%. The parallel mode improved the prediction power of sensitivity to 68.75%. CONCLUSIONS Preoperative SWV level may serve as a promising prognostic imaging indicator for breast IDCs.
Collapse
Affiliation(s)
- Xiang Min
- Department of Ultrasound, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Health Management Center, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jiang Zhu
- Department of Breast Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Mengmeng Shang
- Department of Ultrasound, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jikai Liu
- Department of Urology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Kai Zhang
- Department of Breast Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Lu Guo
- Department of Ultrasound, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Liang Li
- Department of Ultrasound, Medical Section, Jinan Maternal and Child Health Hospital, Jinan, China
| | - Lin Cheng
- Department of Ultrasound, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jie Li
- Department of Ultrasound, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| |
Collapse
|
11
|
Luo C, Li T, Li Z, Zuo Y, He G, Lin J, Liu G, Dai L. Evaluation of Microwave Ablation Efficacy by Strain Elastography and Shear Wave Elastography in ex Vivo Porcine Liver. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:2636-2645. [PMID: 34140168 DOI: 10.1016/j.ultrasmedbio.2021.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 05/04/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
The aim of this study was to evaluate the efficacy of microwave ablation by ultrasound (US), strain elastography (SE) and shear-wave elastography (SWE). An ex vivo model of porcine liver was adopted. According to ablation power and duration, 30 samples were divided into three groups: group 1 (45 W, 30 s), group 2 (45 W, 15 s) and group 3 (30 W, 30 s). US was used to measure the largest transverse diameter (D1), vertical diameter (D2) and anteroposterior diameter (D3) of the ablated area. SE was used to measure the largest transverse diameter (SEL1), vertical diameter (SEL2) and anteroposterior diameter (SEL3). The actual size of the ablated area was measured as the largest transverse diameter (L1), vertical diameter (L2) and anteroposterior diameter (L3). SWE values and temperatures were measured in the central lesion (region a), marginal area (region b) and unablated area (region c). At 1 h post-ablation, the values measured by US (D1, D2, D3) were all significantly smaller than the ablated area (L1, L2, L3) in all three groups. Except for SEL2 in group 1, there was no significant difference in the results between SEL and L among the three groups. All SWE results were significantly higher post-ablation than pre-ablation in the central lesion (region a) and marginal area (region b, all p values <0.05). In regions a, b and c, the temperatures measured immediately and 5 min post-ablation were all higher than that measured pre-ablation. These results suggest that SE and SWE can be used to evaluate the ablation efficacy of liver tissue.
Collapse
Affiliation(s)
- Chunyue Luo
- Department of Ultrasound Imaging, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Tao Li
- Department of Ultrasound Imaging, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Zuojia Li
- Medical Apparatus and Equipment Department, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Yanling Zuo
- Department of Ultrasound Imaging, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Guangmin He
- Department of Ultrasound Imaging, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Jianying Lin
- Department of Ultrasound Imaging, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Guancheng Liu
- Department of Ultrasound Imaging, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Lu Dai
- Department of Thoracic Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong Province, China.
| |
Collapse
|
12
|
Lee HK, Kong D, Choi K, Mislati R, Doyley MM. A Robust and Fast Method for 2-D Shear Wave Speed Calculation. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2021; 68:2351-2360. [PMID: 33625981 DOI: 10.1109/tuffc.2021.3061916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We developed a new method, called the tangent plane method (TPM), for more efficiently and accurately estimating 2-D shear wave speed (SWS) from any direction of wave propagation. In this technique, we estimate SWS by solving the Eikonal equation because this approach is more robust to noise. To further enhance the performance, we computed the tangent plane of the arrival time surface. To evaluate the approach, we performed simulations and also conducted phantom studies. Simulation studies showed that TPM was more robust to noise than the conventional methods such as 2-D cross correlation (CC) and the distance method. The contrast/CNR for an inclusion (69 kPa; manufacturer provided stiffness) of a phantom is 0.54/4.17, 0.54/1.82, and 0.46/1.22. SWS results [mean and standard deviation (SD)] were 4.41 ± 0.49, 4.62 ± 0.85, and 3.66 ± 0.99 m/s, respectively, while the manufacturer's reported value (mean and range) is 4.81 ± 0.49 m/s. This shows that TPM has the higher CNR and lower SD than other methods. To increase the computation speed, an iterative version of TPM (ITPM) was also developed, which calculated the time-of-flight iteratively. ITPM reduced the computation time to 3.6%, i.e., from 748 to 27 s. In vivo case analysis demonstrated the feasibility of using the conventional ultrasound scanner for the proposed 2-D SWS algorithms.
Collapse
|
13
|
Sun YM, Dong H, Du ZY, Yang ZL, Zhao C, Chong J, Li P. The effect of regions-of-interest and elasticity modulus selection on differentiating benign and malignant cervical lymph nodes with shear wave elastography. Clinics (Sao Paulo) 2020; 75:e1691. [PMID: 33146349 PMCID: PMC7561066 DOI: 10.6061/clinics/2020/e1691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 07/22/2020] [Indexed: 12/05/2022] Open
Abstract
OBJECTIVE Imaging diagnosis of cervical lymphadenopathy has conventionally used ultrasonography. Shear wave elastography (SWE) is a recent ultrasound technological advancement that has shown promise in the important medical problem of differentiating between benign and malignant cervical lymph nodes based on quantitative measurements of elasticity modulus. However, widely varying elasticity modulus metrics and regions-of-interest (ROIs) were used in existing studies, leading to inconsistent findings and results that are hard to compare with each other. METHODS Using a large dataset of 264 cervical lymph nodes from 200 patients, we designed a study comparing three elasticity modulus metrics (Emax, Emean, and standard deviation-SD) with three different ROIs to evaluate the effect of such selections. The metric values were compared between the benign and malignant node groups. The different ROI and metric selections were also compared through receiver operating characteristics curve analysis. RESULTS For all ROIs, all metric values were significantly different between the two groups, indicting their diagnostic potential. This was confirmed by the ≥0.80 area under the curve (AUC) values achieved with these metrics. Different ROIs had no effect on Emax, whereas all ROIs achieved high performance at 0.88 AUC. For Emean, the smallest ROI focusing on the area of the highest elasticity achieved the best diagnostic performance. In contrast, the larger ROIs achieved higher performances for SD. CONCLUSIONS This study illustrated the effect of elasticity modulus and ROI selection on the diagnostic performance of SWE on cervical lymphadenopathy. These new findings help guide relevant future studies and clinical applications of this important quantitative imaging modality.
Collapse
Affiliation(s)
- Yong-Mei Sun
- Department of Abdominal Ultrasound, the Affiliated Hospital of Qingdao University, No.16 Jiang Su Rd, Qingdao 266000, Shandong, China
| | - Hai Dong
- Department of Intensive Care Unit, the Affiliated Hospital of Qingdao University, No.16 Jiang Su Rd, Qingdao 266000, Shandong, China
- *Corresponding author. E-mail:
| | - Zong-Yan Du
- Department of Ultrasound, Maternity and Child Health Care of Zaozhuang, Xuecheng, Zaozhuang 277100, Shandong, China
| | - Zong-Li Yang
- Department of Abdominal Ultrasound, the Affiliated Hospital of Qingdao University, No.16 Jiang Su Rd, Qingdao 266000, Shandong, China
| | - Cheng Zhao
- Department of Abdominal Ultrasound, the Affiliated Hospital of Qingdao University, No.16 Jiang Su Rd, Qingdao 266000, Shandong, China
| | - Jing Chong
- Department of Abdominal Ultrasound, the Affiliated Hospital of Qingdao University, No.16 Jiang Su Rd, Qingdao 266000, Shandong, China
| | - Ping Li
- Department of Abdominal Ultrasound, the Affiliated Hospital of Qingdao University, No.16 Jiang Su Rd, Qingdao 266000, Shandong, China
| |
Collapse
|
14
|
Grosu I, Bob F, Sporea I, Popescu A, Sirli R, Schiller A. Two-Dimensional Shear-Wave Elastography for Kidney Stiffness Assessment. Ultrasound Q 2019; 37:144-148. [PMID: 31166295 DOI: 10.1097/ruq.0000000000000461] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT This study aimed to analyze the utility of bidimensional shear-wave elastography for renal assessment and in the prediction of chronic kidney disease (CKD).The study included 92 subjects: 50 healthy volunteers and 42 patients with different degrees of CKD (mean age, 57.5 ± 13.4; 50% were female), excluding those undergoing renal replacement therapies, obstructive pathology, or renal lithiasis. We performed kidney shear-wave velocity (KSWV) determinations in the midportion of the parenchyma of each kidney. The median values were expressed in meters per second.We obtained successful assessments in 94% of the cases for the right kidney (RK) and 90.2% for the left kidney (LK), with an intraclass correlation coefficient of 0.96 (RK) and 0.91 (LK). We obtained significantly lower KSWV values in the CKD lot as opposed to the healthy volunteers: RK: 1.38 ± 0.1 versus 1.78 ± 0.1 m/s, P = 0.05; LK: 1.37 ± 0.1 m/s versus 1.72 ± 0.1 m/s. We could predict the presence of CKD with a sensitivity of 89.2% and a specificity of 76.9% for a KSWV of less than 1.47 m/s, with a tendency of KSWV to decrease with CKD progression.Our study shows that KSWV measured using bidimensional shear-wave elastography decreases in patients with CKD compared with normal subjects, and that for a cutoff value of below 1.47 m/s we could predict, with a good sensitivity and specificity, the presence of CKD.
Collapse
Affiliation(s)
| | | | - Ioan Sporea
- Gastroenterology and Hepatology, "Victor Babeș" University of Medicine and Pharmacy, Timișoara, Romania
| | - Alina Popescu
- Gastroenterology and Hepatology, "Victor Babeș" University of Medicine and Pharmacy, Timișoara, Romania
| | - Roxana Sirli
- Gastroenterology and Hepatology, "Victor Babeș" University of Medicine and Pharmacy, Timișoara, Romania
| | | |
Collapse
|