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Aris T. Papageorghiou - One of the best experts on this subject based on the ideXlab platform.

  • sphenoidal Fontanelle area measurement on rendered three dimensional ultrasound
    Prenatal Diagnosis, 2012
    Co-Authors: C. Ioannou, Ippokratis Sarris, Aris T. Papageorghiou, M K Javaid
    Abstract:

    Objective Rendered three-dimensional images of the fetal cranial vault permit the identification of sutures and measurement of the Fontanelle surface area. The objective of this study was to establish the feasibility and repeatability of sphenoidal Fontanelle area measurement. Method Head volumes were obtained using the biparietal diameter as the reference plane. These were displayed with maximum rendering and the surface area of the sphenoidal Fontanelle was measured by one operator. Feasibility was expressed as the percentage of scans with a successful measurement at different gestational ages. Repeatability was expressed as coefficient of variation (CV), intraclass correlation coefficient (ICC) and Bland–Altman plots. Results Thirty women underwent 141 scans. Feasibility of sphenoidal Fontanelle measurement is over 90% before 26 weeks, but drops gradually thereafter and becomes 0% at 34 weeks. Intraobserver repeatability of measurement on the same scan image demonstrated CV = 17.5% and ICC = 0.883; however, when measuring a newly acquired volume, the repeatability is poor, CV = 30.7% and ICC = 0.649. Conclusion Although it is feasible to visualize the sphenoidal Fontanelle on rendered three dimensions, its surface area measurement is not reliable for clinical use. There is potential to overestimate repeatability when remeasuring the same volume. © 2012 John Wiley & Sons, Ltd.

  • Sphenoidal Fontanelle area measurement on rendered three‐dimensional ultrasound
    Prenatal diagnosis, 2012
    Co-Authors: C. Ioannou, Ippokratis Sarris, Muhammad Javaid, Aris T. Papageorghiou
    Abstract:

    Objective Rendered three-dimensional images of the fetal cranial vault permit the identification of sutures and measurement of the Fontanelle surface area. The objective of this study was to establish the feasibility and repeatability of sphenoidal Fontanelle area measurement. Method Head volumes were obtained using the biparietal diameter as the reference plane. These were displayed with maximum rendering and the surface area of the sphenoidal Fontanelle was measured by one operator. Feasibility was expressed as the percentage of scans with a successful measurement at different gestational ages. Repeatability was expressed as coefficient of variation (CV), intraclass correlation coefficient (ICC) and Bland–Altman plots. Results Thirty women underwent 141 scans. Feasibility of sphenoidal Fontanelle measurement is over 90% before 26 weeks, but drops gradually thereafter and becomes 0% at 34 weeks. Intraobserver repeatability of measurement on the same scan image demonstrated CV = 17.5% and ICC = 0.883; however, when measuring a newly acquired volume, the repeatability is poor, CV = 30.7% and ICC = 0.649. Conclusion Although it is feasible to visualize the sphenoidal Fontanelle on rendered three dimensions, its surface area measurement is not reliable for clinical use. There is potential to overestimate repeatability when remeasuring the same volume. © 2012 John Wiley & Sons, Ltd.

In Hyuk Chung - One of the best experts on this subject based on the ideXlab platform.

  • Fontanelle and Uncinate Process in the Lateral Wall of the Human Nasal Cavity
    The Laryngoscope, 2000
    Co-Authors: Joo-heon Yoon, Kyung-su Kim, Dong Hak Jung, Sung-shik Kim, Ki-seok Koh, Hee Jin Kim, Jeung-gweon Lee, In Hyuk Chung
    Abstract:

    Objectives: Although a complete anatomic knowledge of the Fontanelle is a prerequisite to perform a surgical antrostomy opening, little is known about the boundary, shape, and size of the Fontanelle. The purpose of this paper is to determine the best site for maintaining the patency of a surgical antrostomy opening by defining the anatomic boundaries, shape, and size of the Fontanelle as well as its histological structure. Materials and Methods: One hundred sagittally divided heads were utilized. Mucosa overlying the lateral nasal wall was carefully removed with an operating microscope under 6× magnification. In some cases, a double mucous membrane, including the posteroinferior portion of the uncinate process, was cut as a whole and embedded in paraffin. The sections were stained with H&E. Results: The boundary of the Fontanelle and the location of the natural ostium were described in detail. Eight patterns of the posteroinferior portion of the uncinate process were observed. There were three major Fontanelle shapes when observed from the medial aspect to the lateral: triangular, pencil-like, and oval. The triangular type was the most common. The anterior portion of the Fontanelle was shorter than the posterior when observed medially and was wider than the posterior portion when observed inferiorly. Conclusions: The anterior portion of the Fontanelle is more prone to stenosis than the posterior portion. An antrostomy in the posterior Fontanelle may be more ideal for a middle meatal antrostomy of the maxillary sinus.

  • Fontanelle and uncinate process in the lateral wall of the human nasal cavity.
    The Laryngoscope, 2000
    Co-Authors: Joo-heon Yoon, Kyung-su Kim, Dong Hak Jung, Sung-shik Kim, Ki-seok Koh, Hee Jin Kim, Jeung-gweon Lee, In Hyuk Chung
    Abstract:

    Although a complete anatomic knowledge of the Fontanelle is a prerequisite to perform a surgical antrostomy opening, little is known about the boundary, shape, and size of the Fontanelle. The purpose of this paper is to determine the best site for maintaining the patency of a surgical antrostomy opening by defining the anatomic boundaries, shape, and size of the Fontanelle as well as its histological structure. One hundred sagittally divided heads were utilized. Mucosa overlying the lateral nasal wall was carefully removed with an operating microscope under 6x magnification. In some cases, a double mucous membrane, including the posteroinferior portion of the uncinate process, was cut as a whole and embedded in paraffin. The sections were stained with H&E. The boundary of the Fontanelle and the location of the natural ostium were described in detail. Eight patterns of the posteroinferior portion of the uncinate process were observed. There were three major Fontanelle shapes when observed from the medial aspect to the lateral: triangular, pencil-like, and oval. The triangular type was the most common. The anterior portion of the Fontanelle was shorter than the posterior when observed medially and was wider than the posterior portion when observed inferiorly. The anterior portion of the Fontanelle is more prone to stenosis than the posterior portion. An antrostomy in the posterior Fontanelle may be more ideal for a middle meatal antrostomy of the maxillary sinus.

C. Ioannou - One of the best experts on this subject based on the ideXlab platform.

  • sphenoidal Fontanelle area measurement on rendered three dimensional ultrasound
    Prenatal Diagnosis, 2012
    Co-Authors: C. Ioannou, Ippokratis Sarris, Aris T. Papageorghiou, M K Javaid
    Abstract:

    Objective Rendered three-dimensional images of the fetal cranial vault permit the identification of sutures and measurement of the Fontanelle surface area. The objective of this study was to establish the feasibility and repeatability of sphenoidal Fontanelle area measurement. Method Head volumes were obtained using the biparietal diameter as the reference plane. These were displayed with maximum rendering and the surface area of the sphenoidal Fontanelle was measured by one operator. Feasibility was expressed as the percentage of scans with a successful measurement at different gestational ages. Repeatability was expressed as coefficient of variation (CV), intraclass correlation coefficient (ICC) and Bland–Altman plots. Results Thirty women underwent 141 scans. Feasibility of sphenoidal Fontanelle measurement is over 90% before 26 weeks, but drops gradually thereafter and becomes 0% at 34 weeks. Intraobserver repeatability of measurement on the same scan image demonstrated CV = 17.5% and ICC = 0.883; however, when measuring a newly acquired volume, the repeatability is poor, CV = 30.7% and ICC = 0.649. Conclusion Although it is feasible to visualize the sphenoidal Fontanelle on rendered three dimensions, its surface area measurement is not reliable for clinical use. There is potential to overestimate repeatability when remeasuring the same volume. © 2012 John Wiley & Sons, Ltd.

  • Sphenoidal Fontanelle area measurement on rendered three‐dimensional ultrasound
    Prenatal diagnosis, 2012
    Co-Authors: C. Ioannou, Ippokratis Sarris, Muhammad Javaid, Aris T. Papageorghiou
    Abstract:

    Objective Rendered three-dimensional images of the fetal cranial vault permit the identification of sutures and measurement of the Fontanelle surface area. The objective of this study was to establish the feasibility and repeatability of sphenoidal Fontanelle area measurement. Method Head volumes were obtained using the biparietal diameter as the reference plane. These were displayed with maximum rendering and the surface area of the sphenoidal Fontanelle was measured by one operator. Feasibility was expressed as the percentage of scans with a successful measurement at different gestational ages. Repeatability was expressed as coefficient of variation (CV), intraclass correlation coefficient (ICC) and Bland–Altman plots. Results Thirty women underwent 141 scans. Feasibility of sphenoidal Fontanelle measurement is over 90% before 26 weeks, but drops gradually thereafter and becomes 0% at 34 weeks. Intraobserver repeatability of measurement on the same scan image demonstrated CV = 17.5% and ICC = 0.883; however, when measuring a newly acquired volume, the repeatability is poor, CV = 30.7% and ICC = 0.649. Conclusion Although it is feasible to visualize the sphenoidal Fontanelle on rendered three dimensions, its surface area measurement is not reliable for clinical use. There is potential to overestimate repeatability when remeasuring the same volume. © 2012 John Wiley & Sons, Ltd.

Joo-heon Yoon - One of the best experts on this subject based on the ideXlab platform.

  • Fontanelle and Uncinate Process in the Lateral Wall of the Human Nasal Cavity
    The Laryngoscope, 2000
    Co-Authors: Joo-heon Yoon, Kyung-su Kim, Dong Hak Jung, Sung-shik Kim, Ki-seok Koh, Hee Jin Kim, Jeung-gweon Lee, In Hyuk Chung
    Abstract:

    Objectives: Although a complete anatomic knowledge of the Fontanelle is a prerequisite to perform a surgical antrostomy opening, little is known about the boundary, shape, and size of the Fontanelle. The purpose of this paper is to determine the best site for maintaining the patency of a surgical antrostomy opening by defining the anatomic boundaries, shape, and size of the Fontanelle as well as its histological structure. Materials and Methods: One hundred sagittally divided heads were utilized. Mucosa overlying the lateral nasal wall was carefully removed with an operating microscope under 6× magnification. In some cases, a double mucous membrane, including the posteroinferior portion of the uncinate process, was cut as a whole and embedded in paraffin. The sections were stained with H&E. Results: The boundary of the Fontanelle and the location of the natural ostium were described in detail. Eight patterns of the posteroinferior portion of the uncinate process were observed. There were three major Fontanelle shapes when observed from the medial aspect to the lateral: triangular, pencil-like, and oval. The triangular type was the most common. The anterior portion of the Fontanelle was shorter than the posterior when observed medially and was wider than the posterior portion when observed inferiorly. Conclusions: The anterior portion of the Fontanelle is more prone to stenosis than the posterior portion. An antrostomy in the posterior Fontanelle may be more ideal for a middle meatal antrostomy of the maxillary sinus.

  • Fontanelle and uncinate process in the lateral wall of the human nasal cavity.
    The Laryngoscope, 2000
    Co-Authors: Joo-heon Yoon, Kyung-su Kim, Dong Hak Jung, Sung-shik Kim, Ki-seok Koh, Hee Jin Kim, Jeung-gweon Lee, In Hyuk Chung
    Abstract:

    Although a complete anatomic knowledge of the Fontanelle is a prerequisite to perform a surgical antrostomy opening, little is known about the boundary, shape, and size of the Fontanelle. The purpose of this paper is to determine the best site for maintaining the patency of a surgical antrostomy opening by defining the anatomic boundaries, shape, and size of the Fontanelle as well as its histological structure. One hundred sagittally divided heads were utilized. Mucosa overlying the lateral nasal wall was carefully removed with an operating microscope under 6x magnification. In some cases, a double mucous membrane, including the posteroinferior portion of the uncinate process, was cut as a whole and embedded in paraffin. The sections were stained with H&E. The boundary of the Fontanelle and the location of the natural ostium were described in detail. Eight patterns of the posteroinferior portion of the uncinate process were observed. There were three major Fontanelle shapes when observed from the medial aspect to the lateral: triangular, pencil-like, and oval. The triangular type was the most common. The anterior portion of the Fontanelle was shorter than the posterior when observed medially and was wider than the posterior portion when observed inferiorly. The anterior portion of the Fontanelle is more prone to stenosis than the posterior portion. An antrostomy in the posterior Fontanelle may be more ideal for a middle meatal antrostomy of the maxillary sinus.

Alfredo Gallart - One of the best experts on this subject based on the ideXlab platform.

  • Posterior Fontanelle sonography: an acoustic window into the neonatal brain.
    AJNR. American journal of neuroradiology, 2004
    Co-Authors: Flavia Correa, Goya Enríquez, José Rosselló, Javier Lucaya, Joaquim Piqueras, Celestino Aso, Elida Vazquez, A. Ortega, Alfredo Gallart
    Abstract:

    BACKGROUND AND PURPOSE: Sonographic brain studies are classically performed through the anterior Fontanelle, but visualization of posterior supratentorial and infratentorial structures is poor with this approach. Posterior Fontanelle sonography is recommended for better assessment of these structures. Our purpose was 1) to determine whether sonography of the brain through the posterior Fontanelle (PF) improves visualization of brain lesions when added to the routine anterior Fontanelle (AF) approach and 2) to describe standardized PF coronal and sagittal sections. METHODS: In this prospective study (conducted from February 1999 to January 2001), PF sonography was added to AF sonography in 165 consecutive premature neonates with a birth weight of