Discrepancy in ultrasound biometric parameters of the head (HC - head circumference, BPD - biparietal diameter) in breech presented fetuses

Ľubušký, Marek; Procházka, Martin; Langova, Martina; Vomáčková, Katherine; Čížek, Luděk

doi:10.5507/bp.2007.055

Cited by 16 publications

(17 citation statements)

References 10 publications

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“…Other examples exist in the field of eye [5] and head [6] biometry for health applications. Worth mentioning in the case of eye biometry is the laser system, which provides higher accuracy and consistency than the ultrasound system.…”

Section: Sound Signalsmentioning

confidence: 99%

Beyond Cognitive Signals

Espinosa-Duro¹,

Faundez-Zanuy²,

Mekyska

2010

Cogn Comput

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Although audio-visual human systems have several well-known limitations, artificial sensors can measure information beyond our limits. What would happen if we were able to overcome our limitations? Would we be able to obtain a better knowledge of our environment? Or the information beyond our limits is redundant? In this paper, we compare infrared, thermal and visible images from an information theory point of view. We have acquired a small database and compared several measurements over these images. While infrasounds and ultrasounds are not directly applicable, for instance, to speaker recognition due to the impossibility of human beings generating sounds in these frequencies, this is not the case with image signals beyond the visible spectrum for face recognition. We have observed that visible, near-infrared and thermal images contain a small amount of redundancy (less than 1,55 bits).

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Section: Sound Signalsmentioning

confidence: 99%

Beyond Cognitive Signals

Espinosa-Duro¹,

Faundez-Zanuy²,

Mekyska

2010

Cogn Comput

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“…The range of confidence interval of the values of the proximal epiphysis transverse size in stage II of IHA is, however, less than that observed in the left-sided localization. [15][16][17][18][19]21,[35][36][37][38][39][40][41][42][43]. In spite of the fact that the statistically established distinctions from the screening group can be viewed only in the angle between the femoral neck osseous trabeculae, the range of borders of the confidence intervals increased two times in each of the examined angulated parameters.…”

Section: Resultsmentioning

confidence: 99%

“…We have previously reported specifically on the systematic organization of the femur [13], with subdivided groups into four levels of organization and anatomical values correlating with that of the human body joints. As the anatomy of the human body is characterized by the functional predominance of the right upper and left lower limbs [1][2][3][4][5][6][7][14][15][16][17][18][19][20], particular actuality was acquired in studying the value of parameters at different levels involved with forming the functional asymmetry of the femur bone [13,17,18,19,20]. Furthermore, we assessed authenticated observations of a systemic anatomical study encompassing the proximal femur meta-epiphysis behavior in normal condition, particularly on the asymmetry and structural system analysis of the proximal femur meta-epiphysis regarding Osteoarticular anatomical pathology [21].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the issue of the structural changes and specifically the dynamics associated with the proximal femoral bone meta-epiphysis in the idiopathic hip arthrosis with respect to body side is, to the best that we know of, not fully unraveled [12,13,14,15]. It's widely noted that the adaptive rearrangement of the osseous tissue in response to mechanical stress induction is caused by the physical effects that usually lead to changes in the spatial arrangement of the bone matrix elements towards each other [15,16,17,18,19,20]. Hence, bone mass tends to decrease in zones of minimal mechanical stress and maximal immobilization [13,21].…”

Section: Introductionmentioning

confidence: 99%

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Structural Peculiarities of the Proximal Femur Meta-Epiphysis in the Idiopathic Coxarthrosis According to Localization

Samaha¹,

Ivanov²,

Yashina³

et al. 2013

AJMBR

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Background: The hip essentially represents the major weight-bearing joint of the human organism. It is conspicuously characterized by its mobility and complex origination, specific organization and development. The anatomic structures referred to as acetabulum and femoral head arise from the same primitive mesenchymal cells and, by the end of the 11 th week of gestation, the hip joint becomes fully formed and continues to develop throughout intrauterine life. During embryonic life, the femoral head grows at a faster rate than the acetabulum, and at the end of gestation the femoral head is approximately less than 50% covered, and after birth, the growth rate of the acetabular cartilage surpasses that of femoral head thus resulting in progressively increased coverage. Methods: Cartilaginous at birth, the ossification of acetabulum is set at around a three-month age period, while ossification centers of the proximal femur start to appear at 4 to 7-months. Several developmental abnormalities regarding the relationship between femoral head and acetabulum are therein described; all of those anatomic aberrations may technically result in hip instability, manifested by dislocation, subluxation, dysplasia and arthrosis. Results: From a biomechanical standpoint, three pathological conditions are shown to have arisen mainly at the region of the femoral neck: i) congenital coxa vara, ii) pseudoarthrosis of the neck of the femur and iii) coxarthrosis. All of the aforementioned conditions are caused and maintained by different types of mechanical stress and, in advanced stages, they may necessitate surgical interventions to alter the angle of the femoral neck in order to relieve the pressure at the level of the affected joint mainly during movement. Furthermore, we indicate that there is no standard to adopt regarding the surgical change of the femoral neck angle, though biomechanical assessment has to be worked out and established in each of the affected individual. Conclusion: Plain film radiography plays an important role in the assessment of a dysplastic hip, especially in adults, where operative management is essentially based on various radiographic measurements. Several average values of stresses and strains of the proximal femur were identified on the basis of Wolff's trajectorial hypothesis, where they revealed a trabecular architectural changes and structural remodeling in response to mechanical stress. It is concluded that these pathological conditions (congenital coxa vara, pseudoarthrosis of the neck of the femur and coxarthrosis) that were shown to have arisen mainly at the region of the femoral neck may contribute to understanding pathophysiologic and patho-anatomic peculiarities of the femoral bone.

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“…[1] Ultrasonography has been the method of choice for monitoring foetal development and condition. [2][3][4] Its use goes beyond monitoring the progress of the foetus, as sex can also be determined and abnormalities diagnosed. [5,6] Studies have shown that ovarian and cervical dimensions can be used as adjuncts in accessing maternal factors which could play a role in foetal development.…”

Section: Introductionmentioning

confidence: 99%

Effect of Maternal Age and Birth Order on Foetal Biometric Parameters

Favour¹,

E.²,

Oyakhire³

et al. 2017

aanat

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Background: Foetal biometric parameters have been used to determine the growth pattern and viability of the foetus; however, some studies have suggested that the foetal development are also influenced by the age of the mother and parity (birth order). This research was therefore carried out to establish the effect of maternal age and birth order on foetal biometric parameters of Nigerians. Methods: The study was a prospective crosssectional study, involving a total of 167 (76 male and 91 female) foetal records obtained from a semi-automated ultra-sonographic image. Four (4) biometric parameters (femur length [FL], abdominal circumference [AC], biparietal diameter [BPD], and head circumference [HC], were obtained from the sonographic machine while maternal (age), and birth order were determined after clinical examination and interview by the physician. XLSTAT (Addinsoft, version 2015.4.0.1) ANOVA and correlation were used to evaluate the strength of the relationship between maternal age, birth order and the measured foetal biometric parameters. P<0.05 was taken to be statistically significant at 95% confidence level. Results: The mean±S.D values of the biometric parameters for both sexes were observed as follows; male (FL = 51.40±18.41mm, AC = 245.56±72.02mm, BPD = 67.74±21.07mm, and HC = 230.07±64.34mm) and female (FL = 50.6±18.31mm, AC = 245.51±67.64mm, BPD = 68.47±20.34mm, HC = 235.07±64.27mm and NBL = 8.04±2.29mm). The mean values of the foetuses of the different birth orders were not significantly different (P>0.05). There was also no significant relationship between parity and maternal age on the foetal parameters (P>0.05). Conclusion: It could be concluded that maternal age and parity are not significant influencers of the foetal growth pattern and development.

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Discrepancy in ultrasound biometric parameters of the head (HC - head circumference, BPD - biparietal diameter) in breech presented fetuses

Cited by 16 publications

References 10 publications

Beyond Cognitive Signals

Beyond Cognitive Signals

Structural Peculiarities of the Proximal Femur Meta-Epiphysis in the Idiopathic Coxarthrosis According to Localization

Effect of Maternal Age and Birth Order on Foetal Biometric Parameters

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