EP26.01: Value of “elasto strain ratio” ultrasound elastography in the diagnosis of adenomyosis: preliminary study

BACKGROUND: The patellar and quadriceps tendons are responsible for the extension mechanism of the knee joint and frequently become inflamed during sports. Diagnosis and determination of when an athlete can return to sports following these injuries are usually performed by assessing morphological features and functional outcomes. Nevertheless, mechanical properties are not being assessed. OBJECTIVE: To describe the stiffness characteristics of these two tendons over the range of knee flexion and to test the feasibility of using strain ultrasound elastography (SE). METHODS: SE with an acoustic coupler as the reference was performed for nine healthy males. Relative stiffness measurements were obtained using the strain ratio (SR = target tissue strain/reference strain) by placing the knee in five different flexion angles. Lower SR indicates higher relative stiffness. RESULTS: This study showed reliable measurement with good intra- and inter-rater agreement for SR at 30°. SR of the quadriceps tendon decreases as knee flexion increases, indicating increased relative stiffness. In the patellar tendon, no significant difference was observed between 30° and 60°. Beyond 60°, relative stiffness increased constantly. CONCLUSIONS: SE is a reproducible and feasible tool to monitor relative stiffness of the patellar and quadriceps tendons in routine clinical settings.

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Prospective Evaluation of Semiquantitative Strain Ratio and Quantitative 2D Ultrasound Shear Wave Elastography (SWE) in Association with TIRADS Classification for Thyroid Nodule Characterization

Ultraschall in der Medizin - European Journal of Ultrasound ◽

10.1055/a-0853-1821 ◽

2019 ◽

Vol 40 (04) ◽

pp. 495-503 ◽

Cited By ~ 13

Author(s):

Vito Cantisani ◽

Emanuele David ◽

Hektor Grazhdani ◽

Antonello Rubini ◽

Maija Radzina ◽

...

Keyword(s):

Thyroid Nodule ◽

Shear Wave ◽

Diagnostic Performance ◽

Thyroid Nodules ◽

Shear Wave Elastography ◽

Strain Ratio ◽

Ultrasound Elastography ◽

Prospective Evaluation ◽

2D Ultrasound

Abstract Purpose To evaluate the diagnostic performance of strain ratio elastography (SRE) and shear wave elastography (SWE) alone and in combination with Thyroid Imaging Reporting and Data System (TIRADS) classification parameters to improve differentiation between benign and malignant thyroid nodules. Materials and Methods In this prospective study benign (n = 191) and malignant (n = 52) thyroid nodules were examined with high-resolution ultrasound (US) features using the TIRADS lexicon and SRE semiquantitative and SWE quantitative findings using histology or cytology as the gold standard with a 12-month follow-up. Sensitivity (Se), specificity (Sp) and the area under the ROC curve (AUROC) were used to evaluate the diagnostic performance of each feature and combinations of the methods. Results TIRADS score showed a sensitivity of 59.6 %, a specificity of 83.8 % with an AUROC of 0.717, a PPV of 50.0 % and an NPV of 88.4 %. SRE yielded the highest performance with a sensitivity of 82.7 %, a specificity of 92.7 % with AUROC of 0.877, a PPV 75.4 % and an NPV of 95.2 %. SWE (kPa) had a sensitivity and specificity of 67.3 % and 82.7 %, respectively, with an AUROC of 0.750, a PPV of 51.5 % and an NPV of 90.3 %. Differences were significant for SRE only but not for SWE. Conclusion Ultrasound elastography may improve thyroid nodule discrimination. In particular, SRE has a better performance than TIRADS classification, while their combination improves sensitivity.

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EP22.11: Use of “elasto strain ratio” in the assessment of the cervical internal os stiffness in asymptomatic, low-risk pregnant women: preliminary study

Ultrasound in Obstetrics and Gynecology ◽

10.1002/uog.18677 ◽

2017 ◽

Vol 50 ◽

pp. 361-361

Author(s):

P.R. Szkodziak ◽

S. Wozniak ◽

P. Czuczwar ◽

M. Paszkowski ◽

K. Trzeciak ◽

...

Keyword(s):

Pregnant Women ◽

Strain Ratio ◽

Low Risk ◽

Preliminary Study

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Sa1447 ESTIMATING THE STIFFNESS OF THE PANCREATIC PARENCHYMA WITH A STRAIN RATIO USING ENDOSCOPIC ULTRASOUND ELASTOGRAPHY

Gastrointestinal Endoscopy ◽

10.1016/j.gie.2020.03.1243 ◽

2020 ◽

Vol 91 (6) ◽

pp. AB195

Author(s):

Takamitsu Sato ◽

Kunihiro Hosono ◽

Sho Hasegawa ◽

Yuusuke Kurita ◽

Shingo Kato ◽

...

Keyword(s):

Endoscopic Ultrasound ◽

Strain Ratio ◽

Ultrasound Elastography ◽

Pancreatic Parenchyma

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Can shear wave ultrasound elastography be a useful tool for determining the tumor extent of basal cell carcinomas pre‐operatively? A preliminary study

Skin Research and Technology ◽

10.1111/srt.12769 ◽

2019 ◽

Vol 26 (1) ◽

pp. 148-149

Author(s):

Mehmet Unal ◽

Zeynep Gizem Kaya İslamoğlu ◽

Mehmet Öztürk ◽

Emine Uysal ◽

Necat İslamoğlu

Keyword(s):

Shear Wave ◽

Basal Cell ◽

Ultrasound Elastography ◽

Basal Cell Carcinomas ◽

Preliminary Study ◽

Tumor Extent

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Strain Ratio Ultrasound Elastography Improves the Accuracy of Breast Imaging Reporting and Data System Classification in the Assessment of Breast Masses

Journal of Medical Imaging and Health Informatics ◽

10.1166/jmihi.2017.2018 ◽

2017 ◽

Vol 7 (1) ◽

pp. 273-277 ◽

Cited By ~ 1

Author(s):

YiYun Wu ◽

HongBo Li ◽

LiPing Yin ◽

XuGuang Song ◽

YanYan Ju ◽

...

Keyword(s):

Breast Imaging ◽

Strain Ratio ◽

Data System ◽

Ultrasound Elastography ◽

Breast Masses

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Additional value of qualitative strain ultrasound elastography and strain ratio in predicting thyroid malignancy

The Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1016/j.ejrnm.2017.04.006 ◽

2017 ◽

Vol 48 (4) ◽

pp. 913-920

Author(s):

Mai E.M. Khamis ◽

Ahmad Abdel Azim Ismail ◽

Ahmed M. Alaa El-deen ◽

Mohamed Farouk Amin

Keyword(s):

Strain Ratio ◽

Ultrasound Elastography ◽

Thyroid Malignancy ◽

Additional Value

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The Evaluation of Benign Acute Childhood Myositis by Ultrasound Elastography

Medical Science and Discovery ◽

10.36472/msd.v6i9.299 ◽

2019 ◽

Vol 6 (9) ◽

pp. 205-209

Author(s):

Gülay Güngör ◽

Olcay Güngör

Keyword(s):

Muscle Thickness ◽

Strain Ratio ◽

Muscle Stiffness ◽

Ultrasound Elastography ◽

Radiology Department ◽

Control Group ◽

Healthy Children ◽

The Mean ◽

Group 2 ◽

Group 1

Objective: Herein, we aimed to determine the diagnostic contribution of ultrasound elastography (UE) technique to the assessment of muscle stiffness in pediatric patients with myositis. Material and Methods: This study enrolled 16 patients who presented to our hospital’s Pediatric Neurology Outpatient Clinic with the complaint of inability to walk and who had a clinical presentation of benign acute childhood myositis (BACM). The patients were referred to the Radiology Department to undergo muscle ultrasonography (USG), where they underwent UE of the gastrocnemius muscle (GCM). Results: Children with myositis and healthy children are similar age (7.06 ± 1.52 year (5–11) vs. 7.00 ± 1.59 year (5–11) year) (P: 0.908) and body mass index (BMI) (20.04 ± 1.58 (18.6–24.2) vs. 22.08 ± 1.43 (19.9–24.4) (P: 0.946). The mean serum creatine kinase (CK) was measured as 1520.3 ± 1163.6 U/L (min: 456, max:4100) in children with myositis. In the children with myositis, the thickness of the medial and lateral GCM increased compared with that in control group (medial; 18.15 ± 3.02 mm vs 13.10 ± 2.26 mm, p<0.001, lateral; 13.51 ± 3.07 mm vs 9.34 ± 1.86 mm, p<0.001). The medial and lateral GCM ratio in group 1 was slight bigger than that in group 2 (medial; 1.10 ± 0.37 vs 1.00 ± 0.34, p: 0.274, lateral; 1.22 ± 0.44 vs 1.10 ± 0.29, p: 0.243). GCM strain values were mildly elevated in patients with myositis compared to controls. Conclusion: In the children with myositis, the thickness of the medial and lateral GCM increased compared with that in control group. GCM strain ratio values were slightly higher in myositis patients compared to the control group. We think that the increase in muscle thickness values is mainly secondary to the edema seen in myositis. In addition, UE is a clinically applicable quantitative analysis for changes in myositis.

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