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Signal Intensity within Cerebral Venous Sinuses on Synthetic MRI

Chougar, Lydia (author)
Juntendo Univ, Japan; Hop Cochin, France
Hagiwara, Akifumi (author)
Juntendo Univ, Japan; Univ Tokyo, Japan
Takano, Nao (author)
Juntendo Univ, Japan
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Andica, Christina (author)
Juntendo Univ, Japan
Cohen-Adad, Julien (author)
Juntendo Univ, Japan; Polytech Montreal, Canada; Univ Montreal, Canada
Warntjes, Marcel, Jan Bertus, 1973- (author)
Linköpings universitet,Avdelningen för diagnostik och specialistmedicin,Medicinska fakulteten,Centrum för medicinsk bildvetenskap och visualisering, CMIV,SyntheticMR AB, Linkoping, Sweden
Maekawa, Tomoko (author)
Juntendo Univ, Japan; Univ Tokyo, Japan
Hori, Masaaki (author)
Juntendo Univ, Japan
Koshino, Saori (author)
Juntendo Univ, Japan; Univ Tokyo, Japan
Nakazawa, Misaki (author)
Juntendo Univ, Japan
Abe, Osamu (author)
Univ Tokyo, Japan
Aoki, Shigeki (author)
Juntendo Univ, Japan
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 (creator_code:org_t)
JPN SOC MAGNETIC RESONANCE MEDICINE, 2020
2020
English.
In: MAGNETIC RESONANCE IN MEDICAL SCIENCES. - : JPN SOC MAGNETIC RESONANCE MEDICINE. - 1347-3182 .- 1880-2206. ; 19:1, s. 56-63
Related links:
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Purpose: Flowing blood sometimes appears bright on synthetic T-1-weighted images, which could be misdiagnosed as a thrombus. This study aimed to investigate the frequency of hyperintensity within cerebral venous sinuses on synthetic MR images and to evaluate the influence of increasing flow rates on signal intensity using a flow phantom. Materials and Methods: Imaging data, including synthetic and conventional MRI scans, from 22 patients were retrospectively analyzed. Signal intensities at eight locations of cerebral venous sinuses on synthetic images were graded using the following three-point scale: 0, "dark vessel"; 1, "hyperintensity within the walls"; and 2, "hyperintensity within the lumen:" A phantom with gadolinium solution inside a U-shaped tube was acquired without flow and then with increasing flow rates (60, 100, 200, 300, 400 ml/min). Results: Considering all sinus locations, the venous signal intensity on synthetic T-1-weighted images was graded as 2 in 79.8% of the patients. On synthetic T-2-weighted images, all sinuses were graded as 0. On fluid-attenuated inversion recovery (FLAIR) images, sinuses were almost always graded as 0 (99.4%). In the phantom study, the signal initially became brighter on synthetic T-1-weighted images as the flow rate increased. Above a certain flow rate, the signal started to decrease. Conclusion: High signal intensity within the cerebral venous sinuses is a frequent finding on synthetic T-1-weighted images. This corresponds to the hyperintensity noted at certain flow rates in the phantom experiment.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Medicinteknik -- Medicinsk bildbehandling (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Medical Engineering -- Medical Image Processing (hsv//eng)

Keyword

cerebral venous sinus; flow-related artifacts; synthetic magnetic resonance imaging; thrombosis

Publication and Content Type

ref (subject category)
art (subject category)

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