Principles of Postoperative Spine MRI

Krishnan, Karthik R.; Queler, Sophie C.; Sneag, Darryl B.

doi:10.1007/978-3-030-43627-8_11

Cited by 2 publications

(2 citation statements)

References 35 publications

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“…Artifact reduction techniques that can be implemented include encoding phase direction parallel to the hardware long axis in both the axial and sagittal planes, using a fast spin echo sequence (for short echo spacing maintenance), increasing bandwidth, decreasing voxel size, decreasing field strength, using short tau inversion recovery (STIR) techniques for regional fat suppression, and using view angle tilting [ 22 , 23 ]. Specific sequences for metal artifact reduction are MAVRIC-SL (multiacquisition variable resonance image combination selective) and SEMAC (slice encoding metal artifact correction) [ 24 ]. Figure 8 shows some examples of artifacts produced by metal hardware in a lumbar spine MRI pseudomeningocele.…”

Section: Imaging Methodsmentioning

confidence: 99%

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Imaging Assessment of the Postoperative Spine: An Updated Pictorial Review of Selected Complications

Corona-Cedillo

Saavedra-Navarrete

Espinoza-Garcia

et al. 2021

BioMed Research International

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Imaging of the postoperative spine requires the identification of several critical points by the radiologist to be written in the medical report: condition of the underlying cortical and cancellous bone, intervertebral disc, and musculoskeletal tissues; location and integrity of surgical implants; evaluation of the success of decompression procedures; delineation of fusion status; and identification of complications. This article presents a pictorial narrative review of the most common findings observed in noninstrumented and instrumented postoperative spines. Complications in the noninstrumented spine were grouped in early (hematomas, pseudomeningocele, and postoperative spine infection) and late findings (arachnoiditis, radiculitis, recurrent disc herniation, spinal stenosis, and textiloma). Complications in the instrumented spine were also sorted in early (hardware fractures) and late findings (adjacent segment disease, hardware loosening, and implant migration). This review also includes a short description of the most used diagnostic techniques in postoperative spine imaging: plain radiography, ultrasound (US), computed tomography (CT), magnetic resonance (MR), and nuclear medicine. Imaging of the postoperative spine remained a challenging task in the early identification of complications and abnormal healing process. It is crucial to consider the advantages and disadvantages of the imaging modalities to choose those that provide more accurate spinal status information during the follow-up. Our review is directed to all health professionals dealing with the assessment and care of the postoperative spine.

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Section: Imaging Methodsmentioning

confidence: 99%

“…An additional coronal T2-weighted image could be obtained to depict lumbosacral anatomy and detect disc herniation in the cervical spine. An axial echo sequence is performed to differentiate material from osteophytes [ 24 ].…”

Section: Imaging Methodsmentioning

confidence: 99%

Imaging Assessment of the Postoperative Spine: An Updated Pictorial Review of Selected Complications

Corona-Cedillo

Saavedra-Navarrete

Espinoza-Garcia

et al. 2021

BioMed Research International

View full text Add to dashboard Cite

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Imaging features of the postoperative spine: a guide to basic understanding of spine surgical procedures

Girão,

Miyahara,

Dwan

et al. 2023

Insights Imaging

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Spinal surgical procedures are becoming more common over the years, and imaging studies can be requested in the postoperative setting, such as a baseline study when implants are used, or when there is a new postoperative issue reported by the patient or even as routine surveillance. Therefore, it helps the surgeon in the appropriate management of cases. In this context, there is increasing importance of the radiologist in the adequate interpretation of postoperative images, as well as in the choice of the most appropriate modality for each case, especially among radiographs, computed tomography, magnetic resonance imaging and nuclear medicine. It is essential to be familiar with the main types of surgical techniques and imaging characteristics of each one, including the type and correct positioning of hardware involved, to differentiate normal and abnormal postoperative appearances. The purpose of this pictorial essay is to illustrate and discuss the more frequently used spine surgical interventions and their imaging characteristics, with an emphasis on classical decompression and fusion/stabilization procedures. Graphical Abstract Key points Plain radiographs remain the main modality for baseline, dynamic evaluation, and follow-ups. CT is the method of choice for assessing bone fusion, hardware integrity and loosening. MRI should be used to evaluate bone marrow and soft tissue complications. Radiologists should be familiar with most performed spinal procedures in order to differentiate normal and abnormal. Critical relevance statement This article discusses the main surgical procedures involved in the spine, which can be didactically divided into decompression, stabilization-fusion, and miscellaneous, as well as the role of diagnostic imaging methods and their main findings in this context.

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Principles of Postoperative Spine MRI

Cited by 2 publications

References 35 publications

Imaging Assessment of the Postoperative Spine: An Updated Pictorial Review of Selected Complications

Imaging Assessment of the Postoperative Spine: An Updated Pictorial Review of Selected Complications

Imaging features of the postoperative spine: a guide to basic understanding of spine surgical procedures

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