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  1. Article ; Online: Intraosseous monitoring of drilling in lumbar vertebrae by ultrasound: An experimental feasibility study.

    Rosenberg, Nahum / Halevy-Politch, Jacob

    PloS one

    2017  Volume 12, Issue 5, Page(s) e0174545

    Abstract: The rationale for this project is to evaluate the efficiency of a novel sonographic method for measurements of interosseous distances. The method utilizes a propagating ultrasonic beam through aqueous milieu which is directed as a jet into a drilled ... ...

    Abstract The rationale for this project is to evaluate the efficiency of a novel sonographic method for measurements of interosseous distances. The method utilizes a propagating ultrasonic beam through aqueous milieu which is directed as a jet into a drilled tract. We used a plastic model of human L5 vertebra and ex vivo specimen of L5 porcine vertebra and generated 2 mm in diameter tracts in vertebral pedicles. The tracts were created in the "desired" central direction and in the "wrong" medial and lateral directions. The drilled tracts and the residual, up to opposite cortex, distances were measured sonographically and mechanically and compared statistically. We show that "true" mechanical measurements can be predicted from sonographic measurements with correction of 1-3 mm. The correct central route can be distinguished from the wrong misplaced routes. By using the sonographic measurements, a correct direction of drilling in the pedicle of lumbar L5 vertebra can be efficiently monitored.
    MeSH term(s) Animals ; Feasibility Studies ; Humans ; Linear Models ; Lumbar Vertebrae/diagnostic imaging ; Lumbar Vertebrae/surgery ; Models, Anatomic ; Orthopedic Procedures ; Plastics ; Swine ; Tomography, X-Ray Computed ; Ultrasonography, Interventional/methods
    Chemical Substances Plastics
    Language English
    Publishing date 2017
    Publishing country United States
    Document type Evaluation Studies ; Journal Article
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0174545
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: New US device versus imaging US to assess tumor-in-brain.

    Halevy-Politch, Jacob / Zaaroor, Menashe / Sinai, Alon / Constantinescu, Marius

    Chinese neurosurgical journal

    2020  Volume 6, Page(s) 28

    Abstract: Background: Applying ultrasonic imaging system during surgery requires the poring of saline, performing the measurement, and acquiring data from its display-which requires time and is highly "performer dependent," i.e., the measure is of a subjective ... ...

    Abstract Background: Applying ultrasonic imaging system during surgery requires the poring of saline, performing the measurement, and acquiring data from its display-which requires time and is highly "performer dependent," i.e., the measure is of a subjective nature. A new ultrasonic device was recently developed that overcomes most of these drawbacks and was successfully applied during tumor-in-brain neurosurgeries. The purpose of this study was to compare the two types of US devices and demonstrate their properties.
    Methods: The study was performed in the following stages: (i) an ex vivo experiment, where slices of the muscle and brain of a young porcine were laid one on top the other. Thicknesses and border depths were measured and compared, using the two types of US instruments. (ii) During human clinical neurosurgeries, tumor depth was compared by measuring it with both devices. (iii) Following the success of stages (i) and (ii), using solely the new US device, the tumor thickness was monitored while its resection.Correlation, Pearson's coefficient, average, mean, and standard deviation were applied for statistical tests.
    Results: A high correlation was obtained for the distances of tissue borders and for their respective thicknesses. Applying these ultrasonic devices during neurosurgeries, tumor depths were monitored with high similarity (87%), which was also obtained by Pearson's correlation coefficient (0.44). The new US device, thanks to its small footprint, its remote measurement, and the capability of monitoring intraoperatively and in real-time, provides the approach to tumor's border before its complete resection.
    Conclusions: The new US device provides better accuracy than an ultrasonic imaging system; its data is objective; it enables to
    Language English
    Publishing date 2020-08-05
    Publishing country England
    Document type Journal Article
    ISSN 2095-9370
    ISSN 2095-9370
    DOI 10.1186/s41016-020-00205-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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