P1016 COMPARATIVE STUDY BETWEEN TWO POINT SHEAR WAVE ELASTOGRAPHIC TECHNIQUES: ACOUSTIC RADIATION FORCE IMPULSE (ARFI) ELASTOGRAPHY AND ElastPQ TECHNIQUE

Sporea, Ioan; Bota, Simona; Gradinaru-Tascau, O.; Şirli, Roxana; Popescu, Alina

doi:10.1016/s0168-8278(14)61176-4

Cited by 47 publications

(71 citation statements)

References 19 publications

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“…In ElastPQ, SWV is shown in kPa. There are a report evaluating the correlation between VTQ and ElastPQ for the liver [51] , however, there are none for the pancreas.…”

Section: Us-elastography -Shear Wave Elastograhymentioning

confidence: 99%

Elastography for the pancreas: Current status and future perspective

Kawada¹,

Tanaka²

2016

WJG

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Elastography for the pancreas can be performed by either ultrasound or endoscopic ultrasound (EUS). There are two types of pancreatic elastographies based on different principles, which are strain elastography and shear wave elastography. The stiffness of tissue is estimated by measuring the grade of strain generated by external pressure in the former, whereas it is estimated by measuring propagation speed of shear wave, the transverse wave, generated by acoustic radiation impulse (ARFI) in the latter. Strain elastography is difficult to perform when the probe, the pancreas and the aorta are not located in line. Accordingly, a fine elastogram can be easily obtained in the pancreatic body but not in the pancreatic head and tail. In contrast, shear wave elastography can be easily performed in the entire pancreas because ARFI can be emitted to wherever desired. However, shear wave elastography cannot be performed by EUS to date. Recently, clinical guidelines for elastography specialized in the pancreas were published from Japanese Society of Medical Ultrasonics. The guidelines show us technical knacks of performing elastography for the pancreas. Core tip: Elastography for the pancreas had been considered to be difficult to perform with adequate accuracy and reproducibility because the pancreas is a small organ located deep in center of the human body. This review introduces the recent innovation of elastography for the pancreas, and makes recommendations on how to use various elastographic modalities for the pancreas. The review also shows us what we can know by performing elastography for the pancreas. Elastography may be a promising imaging modality for differential diagnosis between malignant and benign pancreatic tumors, for early diagnosis of chronic pancreatitis, and for identifying high-risk patients for pancreatic cancer. TOPIC HIGHLIGHTKawada N, Tanaka S. Elastography for the pancreas: Current status and future perspective.

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“…In ElastPQ, SWV is shown in kPa. There are a report evaluating the correlation between VTQ and ElastPQ for the liver [51] , however, there are none for the pancreas.…”

Section: Us-elastography -Shear Wave Elastograhymentioning

confidence: 99%

Elastography for the pancreas: Current status and future perspective

Kawada¹,

Tanaka²

2016

WJG

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“…According to available data, LS values by ElastPQ in Romanian healthy volunteers are 1.08 ± 0.12 m/s, value equivalent with 3.5 ± 0.04 kPa [103]. An Asian study showed that LS values by ElastPQ technique are significantly higher in men as compared with women and that they are not influenced by age [102].…”

Section: Liver Stiffness Values In Healthy Volunteersmentioning

confidence: 99%

“…Ten valid LS measurements can be obtained in more than 95% of patients [101][102][103]. There is no information about the learning curve of this method, but similar with ARFI elastography, considering the excellent feasibility in the few published studies, probably a special training is not needed for physicians with basic knowledge in liver ultrasonography.…”

Section: Feasibility and Reproducibilitymentioning

confidence: 99%

Romanian national guidelines and practical recommendations on liver elastography

et al. 2014

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The use of liver elastography has substantially developed in the past few years; the introduction of novel elastographic methods (Transient Elastography, point Shear Wave Elastography, Real Time Shear Wave Elastography, Strain Elastography) has changed the perspective in the evaluation of liver disease. The ongoing research in this area is mainly focused on diffuse liver diseases and for predicting liver cirrhosis complication. This guideline created under the auspice of Romanian Society of Ultrasound in Medicine and Biology is intended to accustomize the clinician with the current practical use of liver elastography and has been issued to help in maximizing the clinical benefit for the patients with chronic liver diseases.

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“…There are also different versions of ARFI (such as Siemens Virtual Touch Quantification™ and Phillips ElastPQ™), which may have different diagnostic accuracies and different diagnostic cutoffs. ElastPQ™ gives significantly lower ARFI readings than the Virtual Touch quantification™ [53]; so, these factors need to be considered when using these techniques.…”

Section: Acoustic Radiation Force Impulse (Arfi) Imagingmentioning

confidence: 99%

Imaging-Based Assessment of Steatosis, Inflammation and Fibrosis in NAFLD

Hardy

McPherson

2017

Curr Hepatology Rep

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Purpose of Review Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease in the Western world. Invasive liver biopsy remains the gold standard method for the diagnosis and staging of NAFLD. The aim of this review is to summarize recent research regarding imagingbased assessment of NAFLD. Recent Findings Novel methods such as controlled attenuation parameter (CAP) and magnetic resonance imaging proton-derived fat fraction (MRI-PDFF) appear promising for steatosis assessment and are currently undergoing validation in NAFLD. Fibrosis can be non-invasively assessed by transient elastography (TE), which is currently the best validated test in NAFLD. MR elastography (MRE) appears very sensitive for fibrosis detection. No imaging technique can accurately detect NASH. Summary TE is inexpensive and relatively widely available and can reliably exclude advanced fibrosis in NAFLD. MRI offers the most promise for steatosis and fibrosis quantification, but further validation of these techniques is needed.

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P1016 COMPARATIVE STUDY BETWEEN TWO POINT SHEAR WAVE ELASTOGRAPHIC TECHNIQUES: ACOUSTIC RADIATION FORCE IMPULSE (ARFI) ELASTOGRAPHY AND ElastPQ TECHNIQUE

Cited by 47 publications

References 19 publications

Elastography for the pancreas: Current status and future perspective

Elastography for the pancreas: Current status and future perspective

Romanian national guidelines and practical recommendations on liver elastography

Imaging-Based Assessment of Steatosis, Inflammation and Fibrosis in NAFLD

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