In vivo quantitative ultrasonic evaluation of neonatal brain with a real time integrated backscatter imaging system

Fujimoto, Chizu; Yamashita, Yushiro; Kanda, Hiroshi; Harada, Eimei; Maeno, Yasuki; Matsuishi, Toyojiro

doi:10.1016/s0387-7604(03)00032-9

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…We carefully selected ROIs in predefined locations in the periventricular WM, and then quantified echogenicity by measuring PBI, as described elsewhere 17 18 26. Other methods of echo-quantification have been reported, including integrated backscatter19 20 and texture analysis with or without software-based compensation algorithms,21–25 but current data do not support one method over the other.…”

Section: Discussionmentioning

confidence: 99%

Quantitative analysis of cranial ultrasonographic periventricular echogenicity in relation to early neuromotor development in preterm infants

Beller

Peylan

Ben-Sira

et al. 2015

Arch Dis Child Fetal Neonatal Ed

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Section: Discussionmentioning

confidence: 99%

Quantitative analysis of cranial ultrasonographic periventricular echogenicity in relation to early neuromotor development in preterm infants

Beller

Peylan

Ben-Sira

et al. 2015

Arch Dis Child Fetal Neonatal Ed

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“…Both repeatability and reproducibility were excellent when judged by the results of the intra-and the interobserver correlations. Fujimoto et al [9] reported a quantitative ultrasonographic evaluation of PVE using an IB imaging system. In their study, the calibrated IB of the PVE decreased with time in VLBW infants similar to the current results.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have advocated that calibration with the neighboring structures is necessary to reduce the interference from the measurement conditions [6,7] . However, Fujimoto et al [9] directly measured the IB of the periventricular white matter in the subrolandic area, and no calibration between neighboring tissues was conducted. The IB of the PVE, which was calibrated by comparing it to the choroid plexus, was measured.…”

Section: Discussionmentioning

confidence: 99%

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Periventricular Echodensity Measured with the Integrated Backscatter System: From a Qualitative Assessment to a Quantitative Approach

et al. 2009

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Background: The degree of periventricular white matter echodensity in preterm infants has been utilized as a sign of the early ultrasonographic appearance of periventricular leukomalacia, and this has been called periventricular echodensity (PVE). Objectives: The aim of this study was to quantitatively measure PVE utilizing a new method which is called calibrated integrated backscatter (calibrated IB). Methods: Eighty-eight preterm infants (extremely low birth weight infants, n = 17; very low birth weight infants, n = 26; low birth weight infants, n = 45) without any CNS abnormality were enrolled. IB is the returned sound pressure against supersonic waves sent from an ultrasonographic machine. The IB of the choroid plexus and periventricular white matter in the subrolandic area were measured on a parasagittal cerebral image. The degree of PVE was defined by subtracting the IB of the choroid plexus from that of the periventricular white matter in the subrolandic area (calibrated IB of PVE). Results: The intraobserver and interobserver correlations were both excellent (between 0.87 and 0.98 as correlation coefficients). There was a trend for the calibrated IB of PVE to decrease in accordance with time after birth, with a significant difference in very low birth weight and low birth weight infants. Conclusions: The objectively measured brightness of PVE was comparable to that of the choroid plexus irrespective of the size of the infants. Measurement of the calibrated IB of PVE might be a reliable method to assess PVE.

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“…1,2 However, there have been few reports regarding IBS or analysis of RF signals in other fi elds. 3,4 The purpose of this study was to evaluate the usefulness of the analysis of the intensity of RF signals in the intracranial ultrasonography of preterm infants.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the intensity of radio-frequency signals in intracranial ultrasonography of preterm infants

Ichihashi¹,

Yada²,

Takahashi³

et al. 2008

J Med Ultrasonics

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In vivo quantitative ultrasonic evaluation of neonatal brain with a real time integrated backscatter imaging system

Cited by 8 publications

References 7 publications

Quantitative analysis of cranial ultrasonographic periventricular echogenicity in relation to early neuromotor development in preterm infants

Quantitative analysis of cranial ultrasonographic periventricular echogenicity in relation to early neuromotor development in preterm infants

Periventricular Echodensity Measured with the Integrated Backscatter System: From a Qualitative Assessment to a Quantitative Approach

Analysis of the intensity of radio-frequency signals in intracranial ultrasonography of preterm infants

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