Benefits of tissue harmonic imaging in the evaluation of abdominal and pelvic lesions

Yücel, Cem; Özdemi̇r, Hakan; Asik, Elif; Oner, Yusuf; Işık, Sedat

doi:10.1007/s00261-001-0157-x

Cited by 19 publications

(20 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although a comparison of conventional sonography with THI and SCI was beyond the scope of this study, better diagnostic performance has been shown in a variety of abdominal and pelvic organs with the use of THI or SCI in comparison with standard B-mode sonography because of improved lateral resolution and elimination of unwanted artifacts. [9][10][11] In addition, the combination of SCI and THI helps reduce specific limitations of each algorithm (eg, blurring and decreased posterior echo characteristics on SCI sonography and decreased penetration in THI). 12 However, a perfect overlap between the two diagnostic methods did not occur for the size and number of lesions in that sonography tended to miss the smallest lesions (<5 mm), to overestimate the lesion size, and to underestimate number of lesions when compared with cystoscopy.…”

Section: Discussionmentioning

confidence: 99%

“…No examination was conducted in the conventional B-mode, so no attempt was made to compare results with and without THI and SCI on the assumption that the superiority of these algorithms in terms of improvements in image quality versus conventional sonography has been widely validated in the radiology literature. [9][10][11][12] By generating an image from multiple scanning lines, SCI improves depiction of lesion margins, reduces image artifacts (such as speckling, clutter, acoustic shadowing, and acoustic enhancement), and enhances image contrast; similarly, THI tends to abolish most artifacts that degrade conventional sonograms. In addition, our choice reflected the availability of sonographic machines equipped with THI and SCI at our institution.…”

Section: Sonographymentioning

confidence: 99%

“…Nowadays, new modes for acquiring sonographic images such as tissue harmonic imaging (THI) and spatial compound imaging (SCI) are widely available and have improved diagnostic performance for sonographic examinations in a variety of abdominopelvic pathologic conditions. [9][10][11][12] The aim of this study was to assess the diagnostic capabilities of sonography carried out with newer machines for showing FBWA detected on cystoscopy by means of a prospective comparison of sonographic and cystoscopic results in a population of patients referred for cystoscopic examinations.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Correlation of Transabdominal Sonographic and Cystoscopic Findings in the Diagnosis of Focal Abnormalities of the Urinary Bladder Wall

Francica¹,

Bellini²,

Scarano³

et al. 2008

Journal of Ultrasound in Medicine

View full text Add to dashboard Cite

Objective. The aim of this study was to prospectively assess the diagnostic capabilities of transabdominal sonography performed with newer sonography machines for showing focal bladder wall abnormalities (FBWAs) detected on cystoscopy. Methods. One hundred twelve consecutive patients (97 male and 15 female; mean age, 68 years) underwent cystoscopy. Reasons for referral were macroscopic hematuria (44 cases [39%]), surveillance after transurethral resection (56 cases [49.5%]), and incidental sonographic findings (12 cases [11.5%]). One to 2 days before cystoscopy, sonography was carried out by a single operator who was blinded to clinical and recent sonographic findings. The presence, size, number, and location of FBWAs (eg, polypoid vegetations and asymmetric bladder wall thickening) were recorded and compared with cystoscopic and histologic findings. Results. One hundred ten patients with a histologic diagnosis were available for the study. Benign conditions, nontransitional tumors, and transitional tumors were found in 26.3%, 3.7% and 70% of the patients, respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and overall accuracy of sonography of cystoscopic lesions were 91.4%, 79.3%, 91.4%, 79.3%, and 88.2%. Cancers of 15 mm or smaller and flat tumors were often missed by sonography, whereas chronic cystitis accounted for most of the false‐positive sonographic findings; however, sonography had poor capability of characterizing FBWAs, with specificity of 62%. In this respect, color Doppler findings proved of little aid as well. Conclusions. In patients selected for cystoscopy, transabdominal sonography with newer sonography machines showed good diagnostic accuracy for focal alterations of the bladder wall found on cystoscopy.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Sonographymentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Correlation of Transabdominal Sonographic and Cystoscopic Findings in the Diagnosis of Focal Abnormalities of the Urinary Bladder Wall

Francica¹,

Bellini²,

Scarano³

et al. 2008

Journal of Ultrasound in Medicine

View full text Add to dashboard Cite

show abstract

“…THI and SCI) which substantially improve image quality and diagnostic yield in comparison to conventional US [23,24]; a consensus obtained between the two operators as to technical modalities of carrying out US examination of the urinary bladder; preliminary discussion of most frequently encountered pitfalls in bladder US diagnostics. On clinical grounds, this implies that well-trained and motivated operators independently of their experience may achieve high diagnostic capabilities in identifying FBWA.…”

Section: Discussionmentioning

confidence: 99%

Prospective evaluation of interobserver diagnostic agreement for focal urinary bladder wall abnormalities detected by ultrasound

Francica¹,

Scarano²,

Bellini³

et al. 2011

Journal of Ultrasound

View full text Add to dashboard Cite

KEYWORDSUrinary bladder; Ultrasound; Bladder cancer; Interobserver variability.Abstract Introduction: The interobserver variability of the sonographic assessment of Focal Bladder Wall Abnormalities (FBWA) between two physicians with different levels of experience was evaluated prospectively. Materials and methods: In the same session the two operators examined independently the urinary bladder of 87 consecutive patients (Mean Age 68 yrs; range 33e80; 75 Males; 15 Females) who underwent cystoscopy within 1e2 days. Before beginning the study, the two observers standardized the process for US exam. Weighted kappa statistics were used to determine the degree of agreement as to the presence, size, location and number of FBWA detected at cystoscopy. Results: the highest level of agreement (k Z 1) was reached on the presence of FBWA, whereas a substantial agreement was reached on size (k Z 0.78), number (k Z 0.72) and location (k Z 0.62) of FBWA. Conclusions: In this study the gap in US experience between two operators did not emerge in assessing FBWA, provided a standardized technical approach is pursued.Sommario Introduzione: È stata valutata prospetticamente la variabilità interosservatore relativamente alla diagnosi di alterazioni focali della parete vescicale tra due operatori con diverso livello di esperienza. Materiali e metodi: Due operatori con diverso livello di esperienza in ecografia hanno esaminato indipendentemente nella stessa sessione 87 pazienti consecutivi (età media 68 anni; range 33e80; 75 maschi; 15 donne) sottoposti successivamente a cistoscopia entro 1e2 giorni. Prima dell'inizio dello studio la metodologia di studio è stata standardizzata. Il grado di accordo sulla presenza, sede, dimensioni e numero delle alterazioni parietali della vescica è stato calcolato con il metodo della Kw. Risultati: Il grado più elevato di accordo (k Z 1) è stato raggiunto relativamente alla presenza delle alterazioni parietali, mentre un accordo sostanziale è stato ottenuto per le dimensioni (k Z 0.78), numero (k Z 0.72) e sede (k Z 0.62). Conclusioni: In questo studio la differenza di esperienza tra due operatori non è emersa nella diagnostica delle alterazioni parietali della vescica anche in ragione di una metodologia standardizzata di studio. ª

show abstract

“…The improved image quality of THS has led to its widespread use in evaluation of the abdomen (liver, kidney, gall bladder, bile ducts), vessels and breasts [7][8][9][17][18][19][20][21][22][23][24][25][26][27]. Limitations of THS include overall coarse echo texture and decreased penetration [17,18].…”

Section: Introductionmentioning

confidence: 99%

Focal hepatic lesions characterisation by different sonographic techniques: a prospective analysis

et al. 2015

View full text Add to dashboard Cite

Introduction Ultrasound is usually the first diagnostic investigation for the assessment of liver lesions. Apart from conventional sonography (CS), new grey-scale sonographic techniques have been developed which have increased the application of ultrasound in liver imaging. The present study was undertaken to compare image quality of CS, real-time compound sonography (RTCS), tissue harmonic sonography (THS) and tissue harmonic compound sonography (THCS) in focal liver lesions. Materials and methods 100 patients with focal hepatic lesions were enroled. Lesions were divided into solid and cystic group. Solid lesions were evaluated for lesion conspicuity and elimination of artefacts. For cystic lesions, lesion conspicuity, posterior acoustic enhancement and internal echoes within the lesion were evaluated. Grading was done using 3-5-point scales. Overall image quality was assessed depending on the total points. Results 78 solid and 22 cystic liver lesions were included. THCS showed superior results for lesion conspicuity, elimination of artefacts and overall image quality in solid lesions. RTCS showed similar results as THCS for lesion conspicuity and overall image quality in solid lesions. THS gave better results in cystic lesions for all imaging parameters. Results of THCS though slightly inferior, showed no significant difference from THS, in cystic lesions. CS was found to have least diagnostic value in characterisation. Conclusions For evaluation of focal hepatic lesions, a combination of compound and harmonic sonography, i.e. THCS, is the preferred sonographic technique.Keywords Ultrasonography Á Liver Á Liver lesions Á Tissue harmonic imaging Á Compound US Riassunto Introduzione l'ecografia è di solito l'indagine radiologica iniziale, non invasiva e semplice, per la valutazione delle lesioni epatiche. Oltre alla tradizionale ecografia in scala di grigi (CS), sono state sviluppate delle nuove tecniche, che hanno aumentato le applicazioni dell'ecografia nell'imaging del fegato. Il presente studio è stato intrapreso per confrontare la qualità delle immagini in: CS, ecografia in tempo reale con compound (RTCS), armonica tissutale (THS) e armonica tissutale con compound (THC) nello studio delle lesioni focali epatiche. Materiali e Metodi sono stati arruolati 100 pazienti con lesioni focali epatiche. Le lesioni sono state divise in solide e cistiche. Per le lesioni solide sono stati valutati la visibilità e l'eliminazione di artefatti. Per le lesioni cistica sono stati valutati la visibilità, il rinforzo acustico posteriore e gli echi all'interno delle lesioni. La classificazione è stata effettuata utilizzando una scala da 3 a 5. La qualità generale dell'immagine è stata valutata in base al totale dei punti. Risultati sono state incluse 78 lesioni epatiche solide e 22 cistiche. La THC ha mostrato risultati superiori per la visibilità delle lesioni, l'eliminazione di artefatti e la qualità complessiva dell'immagine delle lesioni solide. La RTCS ha mostrato risultati simili a quelli di THC per la visibilità ...

show abstract

Benefits of tissue harmonic imaging in the evaluation of abdominal and pelvic lesions

Abstract: THI improved overall image quality and lesion characterization.

Cited by 19 publications

References 9 publications

Correlation of Transabdominal Sonographic and Cystoscopic Findings in the Diagnosis of Focal Abnormalities of the Urinary Bladder Wall

Correlation of Transabdominal Sonographic and Cystoscopic Findings in the Diagnosis of Focal Abnormalities of the Urinary Bladder Wall

Prospective evaluation of interobserver diagnostic agreement for focal urinary bladder wall abnormalities detected by ultrasound

Focal hepatic lesions characterisation by different sonographic techniques: a prospective analysis

Contact Info

Product

Resources

About