"Myelography"

ACR'ASNR'SPR Practice parameter for the performance of myelography and cisternography Full Document Preview PPTS Portal Home Revised 2024 (Resolution 5) Document Navigator * All * PREAMBLE * I. INTRODUCTION * II. INDICATIONS * III. QUALIFICATIONS AND RESPONSIBILITIES OF PERSONNEL * A. Physician * B. Non-Physician Radiology Provider (NPRP) * C. Radiologic Technologist * IV. EQUIPMENT SPECIFICATIONS * V. SPECIFICATIONS OF THE EXAMINATION * A. Preprocedural Patient Care * B. Relative Contraindications to Myelography * C. Procedure [3] * D. Postprocedural Care [28-30, 39] * VI. MR MYELOGRAPHY AND MR CISTERNOGRAPHY * VII. DOCUMENTATION * VIII. RADIATION SAFETY IN IMAGING * IX. QUALITY CONTROL AND IMPROVEMENT, SAFETY, INFECTION CONTROL, AND PATIENT EDUCATION * ACKNOWLEDGEMENTS * REFERENCES

Digital Subtraction Myelography for Cerebrospinal Fluid Leak Identification Skip to main contentAboutCollaboration/OutreachPatient/CommunityCareersContactMy CADTHFRReportsResourcesProvide InputSubmit a RequestNews & EventsWhat Does The Evidence Say About...SearchBreadcrumbHome Digital Subtraction Myelography for Cerebrospinal Fluid Leak IdentificationCopied to clipboardDigital Subtraction Myelography for Cerebrospinal Fluid Leak Identification( Last Updated : November 23, 2022)Project Status:CompletedProject Line:Reference ListProject Sub Line:Summary of AbstractsProject Number:RB1643-000Effective finish date:November 22, 2022DetailsQuestionWhat is the diagnostic test accuracy of digital subtraction myelography for the identification of patients with cerebrospinal fluid leaks?Key MessageWe

Direct comparison of digital subtraction myelography versus CT myelography in lateral decubitus position: evaluation of diagnostic yield for cerebrospinal fluid-venous fistulas. Cerebrospinal fluid (CSF)-venous fistulas (CVFs) are increasingly identified as a cause of spontaneous intracranial hypotension (SIH). Lateral decubitus digital subtraction myelography (LD-DSM) and CT myelography (LD-CTM

ACR–ASNR–SPR Practice Parameter for the Performance of Myelography and Cisternography PRACTICE PARAMETER Myelography / 1 Revised 2013 (Resolution 9)* ACR–ASNR–SPR PRACTICE PARAMETER FOR THE PERFORMANCE OF MYELOGRAPHY AND CISTERNOGRAPHY PREAMBLE This document is an educational tool designed to assist practitioners in providing appropriate radiologic care for patients these services is not authorized. 2 / Myelography PRACTICE PARAMETER I. INTRODUCTION This practice parameter was revised collaboratively by the American College of Radiology (ACR), the American Society of Neuroradiology (ASNR), and the Society for Pediatric Radiology (SPR). Myelography has been an important diagnostic modality for a wide range of spinal disease processes for more than 80

When does CT myelography add value beyond MRI for lumbar degenerative disease? In patients with lumbar spinal stenosis, it is crucial for clinicians to identify all symptomatic levels. Prior studies have demonstrated that CT myelography has a greater sensitivity in revealing stenosis (94.4%) compared to MRI (75.9%). However, this is an invasive test that should be used judiciously. No study has identified a greater proportion of additional stenotic levels in patients with multilevel stenosis (80/139, 58%) compared to patients with single-level stenosis (27/68, 40%, p=.018). In 62 patients with a clinical diagnosis of lumbar stenosis but no moderate to severe stenosis on MRI, CT myelogram identified three additional stenotic levels (3/65, 5%, p=.836). CT myelography is not as useful in providing

Cryptogenic Cerebrospinal Fluid Leaks in Spontaneous Intracranial Hypotension: Role of Dynamic CT Myelography. Purpose To propose a modified dynamic CT myelographic technique to locate cerebrospinal fluid (CSF) leaks, also known as cryptogenic leaks, in patients with spontaneous intracranial hypotension (SIH) in whom previous imaging did not show the dural breach. Materials and Methods This retrospective analysis included 74 consecutive patients with SIH and a myelographically proven CSF leak who were evaluated between February 2013 and October 2017. In 14 patients, dynamic CT myelography in the prone or lateral position showed the exact leakage point after unsuccessful previous imaging. During image analysis, the first time point showing extrathecal contrast material was defined as the site

Dynamic spinal compression revealed by computed tomography myelography in overshunting-associated myelopathy: A case report. OSAM is a rare ventriculoperitoneal (VP) shunt complication where cervical spinal cord compression by epidural venous plexus engorgement is caused by cerebrospinal fluid (CSF) overdrainage. Symmetrically indented deformity of the upper cervical spinal cord and surrounding the cervical spinal cord was deformed and compressed by engorged epidural vein, CT myelography was performed. CT myelography proved that the epidural vein dynamically engorged and compressed the cervical spinal cord immediately after rotation and extension of the neck. CT myelography combined with neck rotation and extension revealed the dynamic change of the epidural venous engorgement, and is useful

Usefulness of spinal unenhanced computed tomography and CT-myelography in the age of multidetector CT technology and magnetic resonance imaging - Preliminary considerations Over the last decade, magnetic resonance imaging (MRI) and multidetector computed tomography (MDCT) have revolutionized diagnostic potential in small animal practice, providing adequate assessment of spinal diseases at levels , and non-invasive diagnostic tools for imaging the spine. In this scenario, this clinical communication provides a series of preliminary observations that may help to reconsider the usefulness of CT-myelography in the light of its invasiveness and actual diagnostic advantages compared to MRI and unenhanced MDCT for the assessment of compressive and non-compressive spinal diseases in small animals.

The Usefulness of Dual-Layer Spectral Computed Tomography for Myelography: A Case Report and Review of the Literature We describe a case of lumbar stenosis in which retrospective spectral analysis using dual-layer spectral detector computed tomography (CT) had the ability to expand the evaluable region in the spinal canal. Spinal canal stenosis is a common condition whose symptoms (such as lower back and leg pain with walking) deteriorate the quality of life. Generally, magnetic resonance imaging (MRI) and CT myelography are performed to diagnose canal stenosis. Dual-layer spectral detector CT can yield virtual monochromatic imaging and retrospective on-demand spectral analysis without a prescan setting. Spectral analysis could expand the evaluable region in the spinal canal for increasing

Extraordinary positional cervical spinal cord compression in extension position as a rare cause of postoperative progressive myelopathy after cervical posterior laminoplasty detected using the extension/flexion positional CT myelography: one case after la Posterior cervical laminectomies and laminoplasties are common treatments for cervical spondylotic myelopathy. However, recent studies after a laminectomy following failure of a single-door laminoplasty and one case after a double-door laminoplasty without interlaminar spacers. The MRIs showed mild cord compression in the neutral position in both cases. However, the patients could not extend their necks, because it triggered severe neck pain and numbness. Therefore, the positional CT myelography (CTM) was taken in the flexion

Myelography in the Assessment of Degenerative Lumbar Scoliosis and Its Influence on Surgical Management Myelography has been shown to highlight foraminal and lateral recess stenosis more readily than computed tomography (CT) or magnetic resonance imaging (MRI). It also has the advantage of providing dynamic assessment of stenosis in the loaded spine. The advent of weight-bearing MRI may go some way towards improving assessment of the loaded spine and is less invasive, however availability remains limited. This study evaluates the potential role of myelography and its impact upon surgical decision making. Of 270 patients undergoing myelography during 2006-2009, a period representing peak utilisation of this imaging modality in our unit, we identified 21 patients with degenerative scoliosis

Prevalence of hyperdense paraspinal vein sign in patients with spontaneous intracranial hypotension without dural CSF leak on standard CT myelography A recently identified and treatable cause of spontaneous intracranial hypotension (SIH) is cerebrospinal fluid (CSF)-venous fistula, and a recently described computed tomography myelogram (CTM) finding highly compatible with but not diagnostic is highly compatible with the presence of CSF-venous fistula. Since the CTMs were not specifically dedicated to identifying hyperdense paraspinal veins (i.e., they were not dynamic and were not preceded by digital subtraction myelography), the true prevalence of the sign may be higher. Radiologists should scrutinize conventional CTMs for this sign, especially in patients in whom a traditional dural CSF

Intraoperative Myelography in Transpsoas Lateral Lumbar Interbody Fusion for Degenerative Lumbar Spinal Stenosis: A Preliminary Prospective Study To investigate the feasibility and effectiveness of intraoperative myelography in determining adequacy of indirect spinal canal decompression during transpsoas lateral lumbar interbody fusion (LLIF). Seven patients diagnosed with degenerative lumbar spinal stenosis (DLSS) were prospectively included to this study. All patients underwent LLIF and subsequently received intraoperative myelography to determine the effect of indirect spinal canal decompression, which was visualized in both anterior-posterior and lateral images. Those patients with insufficient indirect canal decompression were further resolved by microendoscopic canal decompression

The role of CT myelography in sparing the spinal cord during definitive radiotherapy in vertebral hemangioma The spinal cord is poorly visualized on CT images but is well visualized in MRI images. However, implants used for spinal stabilization can produce artifacts on the MRI images which can interfere with identification of the cord. CT myelography in conjunction with CT simulation helps to clearly delineate the cord. CT simulation was done in a patient with vertebral hemangioma. Pre- and post myelography images were obtained. Two plans were generated on pre and post myelography CT images using Eclipse™ treatment planning system (TPS) version 10.0, Varian Medical Systems, USA. The prescribed total dose to PTV was 40 Gy in 20 fractions. The cord was poorly visualized in the premyelogram CT

Postlaminectomy membrane with dynamic spinal cord compression disclosed with computed tomographic myelography: a case report and literature review It has been hypothesized that postoperative epidural scar, postlaminectomy membrane, may be responsible for late neurological deterioration after cervical laminectomy in some cases, but there is a lack of radiological studies in the literature showing cord compression by the postlaminectomy membrane was identified on computed tomographic myelography. The patient underwent atlantoaxial fixation and C3-C7 posterior decompression and fixation combined with removal of the thick and firm postlaminectomy membrane adhering to the dura mater. Histopathological findings of the postlaminectomy membrane revealed chronic inflammation around exogenous

Using Magnetic Resonance Myelography to Improve Interobserver Agreement in the Evaluation of Lumbar Spinal Canal Stenosis and Root Compression Cross-sectional retrospective study designed to assess interobserver agreement. To investigate if interobserver agreement using magnetic resonance imaging (MRI) in the evaluation of lumbar spinal canal stenosis and root compression can be improved upon combination with magnetic resonance myelography (MRM). The interpretation of lumbar spinal MRI, which is the imaging modality of choice, often has a significant influence on the diagnosis and treatment of low back pain. However, using MRI alone, substantial interobserver variability has been reported in the evaluation of lumbar spinal canal stenosis and nerve root compression. Hardcopies of 30 lumbar spinal

Intracranial migration of iophendylate four decades after conventional myelography. Iophendylate is an oil-based contrast agent used in conventional myelography before the 1980s. We report an unusual case of an 82-year-old woman with iophendylate migration into the intracranial cerebrospinal fluid space after myelography 40 years ago. The patient was treated conservatively and followed up

The utility of radioisotope cisternography in low CSF/volume syndromes compared to myelography. Objective The objective of this report is to compare computed tomography (CT) and magnetic resonance (MR) myelography with radioisotope cisternography (RC) for detection of spinal cerebrospinal (CSF) leaks. Methods We retrospectively reviewed 12 spontaneous intracranial hypotension (SIH) patients; CT and RC were performed simultaneously. Three patients had MR myelography. Results CT and/or MR myelography identified CSF leaks in four of 12 patients. RC detected spinal leaks in all three patients confirmed by CT myelography; RC identified the CSF leak location in two of three cases, and these were due to osteophytic spicules and/or discs. RC showed only enlarged perineural activity. Only intrathecal

Quantitative evaluation of cervical cord compression by computed tomographic myelography in Thoroughbred foals Five Thoroughbred foals (age, 8-33 weeks; median age, 31 weeks; weight, 122-270 kg; median weight, 249 kg) exhibiting ataxia with suspected cervical myelopathy (n=4) and limb malformation (n=1) were subjected to computed tomographic (CT) myelography. The areas of the subarachnoid space lesion site. Therefore, in this study, a ratio between 52.8-54.1% was suggested to be borderline for physical compression that damages the cervical cord. All the cervical vertebrae could not be scanned in three of the five cases. Therefore, CT myelography is not a suitable method for locating the site of compression, but it should be used for quantitative evaluation of cervical stenosis diagnosed

Relief of Lower Back and Leg Pain after Myelography It is well-known that many patients will have adverse reactions such as headache and nausea after undergoing myelography, but we have often seen cases where symptoms such as lower back pain and leg pain were alleviated following myelography. To the best of our knowledge, such clinical cases of post-myelographic alleviation have not been reported. A total of 325 patients with a degenerative lumbar spinal disorder who underwent myelography were prospectively investigated at four hospitals from April 2012 to March 2014 to survey the post-myelographic alleviation of lower back and leg pain prospectively. The severities of lower back pain, leg pain and numbness of the lower extremities were evaluated and intermittent claudication distance