Ultrasonographic quantification of spinal cord and dural pulsations during cervical laminoplasty in patients with compressive myelopathy

Kimura, Atsushi; Seichi, Atsushi; Inoue, Hirokazu; Endo, Teruaki; Sato, Makihiko; Higashi, Takahiro; Hoshino, Yuichi

doi:10.1007/s00586-012-2430-9

Cited by 31 publications

(29 citation statements)

References 17 publications

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“…Another study of patients with OPLL described the utility of US in evaluating posterior spinal cord shift following cervical cord surgical decompression [21]. Notably, one group reported that dural pulsation on intraoperative US is not a good indicator of sufficient decompression and should be used in conjunction with other markers of cord compression [22].…”

Section: Intra-operative Usmentioning

confidence: 99%

The utility of ultrasound for surgical spinal decompression

et al. 2015

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Surgery is routinely performed to decompress the spinal cord. While a number of imaging modalities are currently used in the perioperative setting of surgical spinal cord decompression including computed tomography scan and magnetic resonance imaging, ultrasound (US) usage is relatively new. Therefore, only a few studies in the literature describe its value in the perioperative setting. US is a simple, safe, rapid, non-invasive, and inexpensive modality that constitutes a potential alternative when other modalities are not suitable or unavailable. It enables surgeons to generate high-resolution real-time images that can aid in diagnosing pathologies, guiding surgeries, and evaluating surgical outcomes. This review discusses the present literature and utility of pre-, intra-, and post-operative US in patients undergoing surgical spinal decompression. We also delineate three cases in which US was utilized at King Saud University hospital, which is considered one of the first centers in our region to report the use of US to guide treatment in spine surgery.

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Section: Intra-operative Usmentioning

confidence: 99%

The utility of ultrasound for surgical spinal decompression

et al. 2015

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“…While anesthetists have become accustomed to using Doppler US to detect important vessels in other nerve block procedures, identifying dural pulsation through Doppler US is challenging because of the low velocity of the motion, which is often orthogonal to the beam direction. Speckle tracking techniques are another alternative that have been used to assess dural pulsation in cervical laminoplasty, but required imaging perpendicular to the spinal cord using a view preselected with MRI [13]. The out-ofplane motion, particularly significant with the paramedian approach, severely degrades methods that rely on explicit motion or velocity estimation.…”

Section: Introductionmentioning

confidence: 99%

Detection and visualization of dural pulsation for spine needle interventions

et al. 2015

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“…Ultrasound imaging can demonstrate the spinal cord and the surrounding structures. This helps greatly to confirm the adequacy of the spinal cord decompression [8]. The ultrasound is also able to detect spinal cord pulsation and record it in a video format [8].…”

Section: Introductionmentioning

confidence: 99%

“…Figure 3 shows the laminectomy surgery and the spinal cord. In normal situations, the spinal cord could not be imaged using ultrasound imaging because ultrasonic waves do not pass well through bones [8]. In fact, the spinal cord is completely enclosed inside the bones of the spinal column.…”

Section: Introductionmentioning

confidence: 99%

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Spinal Cord Segmentation in Ultrasound Medical Imagery

et al. 2020

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In this paper, we study and evaluate the task of semantic segmentation of the spinal cord in ultrasound medical imagery. This task is useful for neurosurgeons to analyze the spinal cord movement during and after the laminectomy surgical operation. Laminectomy is performed on patients that suffer from an abnormal pressure made on the spinal cord. The surgeon operates by cutting the bones of the laminae and the intervening ligaments to relieve this pressure. During the surgery, ultrasound waves can pass through the laminectomy area to give real-time exploitable images of the spinal cord. The surgeon uses them to confirm spinal cord decompression or, occasionally, to assess a tumor adjacent to the spinal cord. The Freely pulsating spinal cord is a sign of adequate decompression. To evaluate the semantic segmentation approaches chosen in this study, we constructed two datasets using images collected from 10 different patients performing the laminectomy surgery. We found that the best solution for this task is Fully Convolutional DenseNets if the spinal cord is already in the train set. If the spinal cord does not exist in the train set, U-Net is the best. We also studied the effect of integrating inside both models some deep learning components like Atrous Spatial Pyramid Pooling (ASPP) and Depthwise Separable Convolution (DSC). We added a post-processing step and detailed the configurations to set for both models.

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Ultrasonographic quantification of spinal cord and dural pulsations during cervical laminoplasty in patients with compressive myelopathy

Cited by 31 publications

References 17 publications

The utility of ultrasound for surgical spinal decompression

The utility of ultrasound for surgical spinal decompression

Detection and visualization of dural pulsation for spine needle interventions

Spinal Cord Segmentation in Ultrasound Medical Imagery

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