Hepatic sonography: comparison of tissue harmonic and standard sonography techniques.

Hann, L E; Bach, Ariadne M.; Cramer, Laura D.; Siegel, David; Yoo, HS; García, R.

doi:10.2214/ajr.173.1.10397127

Cited by 94 publications

(66 citation statements)

References 9 publications

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“…M any innovative technologies, such as harmonic imaging [1][2][3][4] and real-time compound imaging (SonoCT imaging), [5][6][7][8] have been introduced over the past several years to improve ultrasound (US) image quality. Real-time processing involving adaptive image analysis and enhancement (XRES imaging) is one of the latest commercially available US techniques.…”

mentioning

confidence: 99%

Application of Adaptive Image Processing Technique to Real-Time Spatial Compound Ultrasound Imaging Improves Image Quality

Meuwly¹,

Thiran²,

Gudinchet³

2003

Investigative Radiology

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Rationale and Objectives. To assess the impact of adaptive filter postprocessing on quality of ultrasound images. Methods. Ultrasound images acquired with real-time spatial compound imaging (SonoCT imaging) were subsequently processed with an adaptive real time algorithm (XRES imaging). Conventional and XRES-processed images from abdominal, pediatric or small parts ultrasound explorations were compared. The delineation of borders, tissue contrast, amount of noise, and overall image quality were evaluated. Results. Delineation of borders and tissue contrast were improved on all images (P Ͻ 0.05). The amount of noise was reduced (P Ͻ 0.05). The overall image quality was improved for abdominal, pediatric and small parts ultrasound explorations (P Ͻ 0.05). No image degradation was found. Conclusions. Adaptive processing provided better image quality without loss of clinically useful information.Key Words: diagnostic imaging, medical electronics, image enhancement, ultrasonography (Invest Radiol 2003;38: 257-262) M any innovative technologies, such as harmonic imaging 1-4 and real-time compound imaging (SonoCT imaging), [5][6][7][8] have been introduced over the past several years to improve ultrasound (US) image quality. Real-time processing involving adaptive image analysis and enhancement (XRES imaging) is one of the latest commercially available US techniques. It derives from processing of digital signals and is based on research originally performed for use in enhancing MRI images. With this technology, the US image, initially constructed by the scan converter of the device, is further refined in real time by an adaptive algorithm prior to display on the screen.XRES imaging is considered adaptive because it adapts its processing automatically to the nature of the target, both locally (ie, within an individual image) and temporally (over time from image to image). This adaptability is achieved in XRES by having both an analysis phase, in which both real tissue structures and ultrasound artifacts are identified, and an enhancement phase, in which structures identified in the analysis phase are enhanced and artifacts are suppressed. The analysis phase of XRES takes into account many characteristics of the image, such as textural and structural properties including gradients and local statistics. The results of this analysis directly control the enhancement phase; for example, smoothing is applied along an interface to improve continuity, whereas edge enhancement is applied in the perpendicular direction to improve spatial resolution. In regions identified by the analysis phase as being relatively homogeneous (containing minimal structure or texture), smoothing is applied equally in all directions to suppress speckle and noise. Thus XRES is designed both to suppress artifacts and to enhance interfaces and margins. In addition, XRES is a multiresolution algorithm. This means that all processinganalysis and enhancement-occurs at multiple scales within the image. Multiresolution processing improves robustness by all...

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mentioning

confidence: 99%

Application of Adaptive Image Processing Technique to Real-Time Spatial Compound Ultrasound Imaging Improves Image Quality

Meuwly¹,

Thiran²,

Gudinchet³

2003

Investigative Radiology

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“…Now, THI is widely used and the studies conducted on various organs such as breast [16,17], thyroid gland [7], liver [8], gallbladder [6], carotid arteries [7], bile duct [18]. Additionally, there is no difficulty of use as it can be easily activated by pushing single button and it can be easily used in obstetric examination.…”

Section: Discussionmentioning

confidence: 99%

“…There are many studies on its contribution to NT measurement and detection of various abnormalities [3][4][5]. Moreover, there are many studies demonstrating superior image quality of Tissue harmonic imaging (THI) in comparison with conventional grey-scale ultrasonography (CUS) and also demonstrating image quality in examining various tissues [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Tissue harmonic imaging in comparison with conventional sonography: effect on image quality of the nuchal translucency measurement

Ceylan¹,

Er²

2014

Cumhuriyet Med J

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Aim. In this study, tissue harmonic imaging (THI) was compared with conventional gray scale ultrasonography (CUS) by scoring system in measurement of nuchal translucency (NT) and in examination of fetal posterior neck region. Additionally, it was also investigated that whether body habitus of patient provide effect on this condition or not. Methods. Fetal neck region and nuchal translucency were evaluated by using scoring system (1: not seen, 2: seen uncertainly, 3: seen acceptably, 4: well seen, and 5: very well seen). The tissue harmonic imaging was compared with B-mode. Results. In normal patients, overall average score (11+0 to 13+6 weeks) for CUS was 3.27 and it was 3.69 for THI. However, in obese patients, overall average score for CUS was 2.96 and it was 3.48 for THI. For the group with normal BMI; examination with tissue harmonic imaging was on average more clearly visible in 44.6% of the cases, the same as in the conventional B-mode in 53%, and worse in only 2.4%. However, in obese group; examination with tissue harmonic imaging was on average more clearly visible in 51.2% of the cases, the same as in the conventional B-mode in 46.4%, and worse in only 2.4%. Conclusion. When normal group and obese groups are completely considered, it was found that THI provides similar or better image quality almost in all of the patients than that of CUS. Keywords:Harmonic imaging, scoring system, ultrasonography, body mass index Özet Amaç. Bu çalışmada, fetus boyun posterior bölgesinin değerlendirilmesinde ense kalınlığı ölçümü doku harmonik görüntüleme (DHG) ve konvansiyonel gri skala ultrasonografide (KUS) skorlama sistemi ile karşılaştırılmıştır. Ayrıca hastaların vücut habitusunun ölçümlere etkisinin olup olmadığı araştırılmıştır. Yöntem. Fetal boyun bölgesi ve ense kalınlığı skorlama sistemi kullanılarak değerlendirildi (1: görülemeyen, 2: belirsiz görülen, 3: kabul edilebilir ölçüde görülen, 4: iyi görülen, 5: çok iyi görülen). Doku harmonik görüntüleme B mod ultrasonografi ile karşılaştırıldı. Bulgular. Normal hastalarda, genel ortalama puan (11+0 ile 13+6 hafta) KUS'de 3,27 ve DHG ile 3,69 idi. Ancak, obez hastalarda genel ortalama puan KUS' de 2,96 ve DHG ile 3,48 idi. Normal vücut kitle indeksi olan grupta; DHG ile değerlendirmede ortalama olarak çok net görülebilen grup hastaların %44,6'sı, KUS ile hastaların %53'üdür. Sadece %2,4 görüntü kötü sınıfında idi. Ancak obez grupta; DHG ile ortalama olarak çok net görülebilen grup hastaların % 51,2' si, KUS ile hastaların %46,4' ü dür. Sadece %2,4 görüntü kötü sınıfında idi. Sonuç. Normal grup ve obez grup tümüyle ele alındığında; tüm hastalarda DHG, KUS ile benzer yada daha iyi görüntü kalitesi sağlamaktadır.Anahtar sözcükler: Harmonik görüntüleme, skorlama sistemi, ultrasonografi, vücut kitle indeksi Geliş tarihi

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“…Tissue harmonic imaging (THI) is an ultrasound technique that improves image resolution and contrast and provides gray-scale imaging with fewer artifacts (Averkiou et al 1997;Tranquart et al 1999;Ward et al 1997). Combining conventional ultrasound algorithms with THI is therefore a standard method to improve the image quality of gray-scale imaging (Desser and Jeffrey 2001;Hann et al 1999;Shapiro et al 1998;Tranquart et al 1999). However, conventional B-mode imaging techniques have several technical constraints, as images are acquired sequentially one image line at a time.…”

Section: Introductionmentioning

confidence: 99%

Clinical Evaluation of Synthetic Aperture Harmonic Imaging for Scanning Focal Malignant Liver Lesions

Brandt

Hemmsen

Hansen

et al. 2015

Ultrasound in Medicine & Biology

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Abstract-The purpose of the study was to perform a clinical comparison of synthetic aperture sequential beamforming tissue harmonic imaging (SASB-THI) sequences with a conventional imaging technique, dynamic receive focusing with THI (DRF-THI). Both techniques used pulse inversion and were recorded interleaved using a commercial ultrasound system (UltraView 800, BK Medical, Herlev, Denmark). Thirty-one patients with malignant focal liver lesions (confirmed by biopsy or computed tomography/magnetic resonance) were scanned. Detection of malignant focal liver lesions and preference of image quality were evaluated blinded off-line by eight radiologists. In total, 2,032 evaluations of 127 image sequences were completed. The sensitivity (77% SASB-THI, 76% DRF-THI, p 5 0.54) and specificity (71% SASB-THI, 72% DRF-THI, p 5 0.67) of detection of liver lesions and the evaluation of image quality (p 5 0.63) did not differ between SASB-THI and DRF-THI. This study indicates the ability of SASB-THI in a true clinical setting.

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Hepatic sonography: comparison of tissue harmonic and standard sonography techniques.

Cited by 94 publications

References 9 publications

Application of Adaptive Image Processing Technique to Real-Time Spatial Compound Ultrasound Imaging Improves Image Quality

Application of Adaptive Image Processing Technique to Real-Time Spatial Compound Ultrasound Imaging Improves Image Quality

Tissue harmonic imaging in comparison with conventional sonography: effect on image quality of the nuchal translucency measurement

Clinical Evaluation of Synthetic Aperture Harmonic Imaging for Scanning Focal Malignant Liver Lesions

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