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Research ArticleSPINE

Preangiographic Evaluation of Spinal Dural Arteriovenous Fistulas with Elliptic Centric Contrast-Enhanced MR Angiography and Effect on Radiation Dose and Volume of Iodinated Contrast Material

Patrick H. Luetmer, John I. Lane, Julie R. Gilbertson, Matt A. Bernstein, John Huston and John L. D. Atkinson
American Journal of Neuroradiology April 2005, 26 (4) 711-718;
Patrick H. Luetmer
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John I. Lane
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Julie R. Gilbertson
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Matt A. Bernstein
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John Huston III
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John L. D. Atkinson
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    Fig 1.

    Images in a 53-year-old woman with a 3-year history of progressive, burning pain; numbness; and subsequent weakness in her lower extremity. She had bladder incontinence in the last year. Left, Sagittal fast spin-echo image shows increased T2 signal intensity and mild swelling involving the lower cord and conus. Flow voids are present over the dorsal surface of the cord. Middle and right, Sagittal T1-weighted images without (middle) and with (right) gadolinium enhancement show patchy enhancement of the lower cord and conus. It is difficult to appreciate the prominent coronal venous plexus on the enhanced image.

  • Fig 2.
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    Fig 2.

    Sagittal MRA performed with a bolus of gadolinium-based contrast agent. Thin, 6-mm coronal (far left) and sagittal (middle left and middle) MIP images obtained at 2-mm increments through the spinal canal show a prominent, tortuous medullary vein extending from the level of the lower body of S1 (white arrow) to the conus and a dilated coronal venous plexus. Catheter, right internal iliac angiograms (middle right and right) show a spinal dural AVF at S4 on the right (black arrows). Draining medullary vein is relatively straight until it begins to meander in the subarachnoid space at the level of the lower body of S1 (white arrow).

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    Fig 3.

    Images in a 72-year-old man with a 2-year history of urinary incontinence with progressive perianal and lower-extremity numbness and loss of lower-extremity control over the last year leading to use of a wheelchair in the last 2 months. Far left, MIP image in the left anterior oblique projection shows prominent, tortuous vessels on the dorsal and ventral surfaces of the cord and a prominent vessel extending from the right T11 foramen (arrow). Middle left, Source image confirms a prominent vessel (arrows) extending from below the right T11 pedicle (X) to prominent vessels on the surface of the cord. Middle right and right, Catheter angiograms in anteroposterior and left anterior oblique views at T11 on the right confirms a spinal dural AVF inferior to the right T11 pedicle draining to a dilated coronal venous plexus.

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    Fig 4.

    Images in a 64-year-old man with a 13-month history of progressive lower trunk and lower-extremity numbness and mild bowel and bladder urgency. Far left, Sagittal T2-weighted fast spin-echo image shows increased T2 signal intensity and mild swelling involving the lower spinal cord and conus, with prominent flow voids over the dorsal surface of the cord (arrows). Middle left and middle right, MRA performed with a bolus of gadolinium-based contrast agent. Thin, 6-mm sagittal (middle left) and coronal (middle right) MIP images at 2 mm increments through the spinal canal confirm a dilated coronal venous plexus along the dorsal surface of the cord (arrow) and show a prominent medullary vein extending from the left L1 foramen (arrowhead). Far right, Catheter angiogram confirms a spinal dural AVF at L1 on the left side.

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    Fig 5.

    Images in a 62-year-old man with a 19-month history of progressive lower-extremity motor and sensory dysfunction and neurogenic bladder diagnosed elsewhere, with transverse myelitis. Far left and middle left, MRA performed with a bolus of gadolinium-based contrast agent and thin, 6-mm coronal MIP images obtained at 2-mm increments through the spinal canal. Far left, Image shows a prominent medullary vein at the level of the left T11 foramen (arrow). Middle left, Image shows that the medullary vein is continuous with a prominent medullary vein emanating from the left T12 foramen (arrow). Far right and middle right, Limited catheter, 4- and 10-second spinal angiograms confirm a spinal dural AVF located under the left T12 pedicle (curved arrow). Left T12 medullary vein loops back toward the left T11 foramen (straight arrow). The 10-second delayed image shows opacification of the dilated coronal venous plexus. MRA allowed us to limit angiography to the bilateral T11-L1 segmental arteries and thus limit the cost, radiation exposure, and dose of contrast agent (to 57 mL).

Tables

  • Figures
  • Dose correlation with localization of AVF before catheter angiography

    GroupFluoroscopy Time (min)Dose of Iodinated Contrast Agent (mL)
    A, MRA localized AVF before angiography (n = 13)26.3146
    B, MRA did not localize AVF before angiography (n = 9)55.1325
    C, No spinal dural AVF found despite angiography (n = 9)50.3288
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American Journal of Neuroradiology: 26 (4)
American Journal of Neuroradiology
Vol. 26, Issue 4
1 Apr 2005
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Preangiographic Evaluation of Spinal Dural Arteriovenous Fistulas with Elliptic Centric Contrast-Enhanced MR Angiography and Effect on Radiation Dose and Volume of Iodinated Contrast Material
Patrick H. Luetmer, John I. Lane, Julie R. Gilbertson, Matt A. Bernstein, John Huston, John L. D. Atkinson
American Journal of Neuroradiology Apr 2005, 26 (4) 711-718;

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Preangiographic Evaluation of Spinal Dural Arteriovenous Fistulas with Elliptic Centric Contrast-Enhanced MR Angiography and Effect on Radiation Dose and Volume of Iodinated Contrast Material
Patrick H. Luetmer, John I. Lane, Julie R. Gilbertson, Matt A. Bernstein, John Huston, John L. D. Atkinson
American Journal of Neuroradiology Apr 2005, 26 (4) 711-718;
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  • Comparison of Dynamic Contrast-Enhanced 3T MR and 64-Row Multidetector CT Angiography for the Localization of Spinal Dural Arteriovenous Fistulas
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  • Value and Limitations of Contrast-Enhanced MR Angiography in Spinal Arteriovenous Malformations and Dural Arteriovenous Fistulas
  • MR Angiography of the Great Anterior Radiculomedullary Artery (Adamkiewicz Artery) Validated by Digital Subtraction Angiography
  • Multidetector CT angiography in diagnosing type I and type IVA spinal vascular malformations.
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