492. The Abdominal 3D MR-Angiography with the Inverted Technique

Mizuuchi, Nobuo; Miyota, Shuhei; Ohta, Atsuko; Sirakawa, Toyomi; Takizawa, Osamu

doi:10.6009/jjrt.kj00003324231

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1994

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“…The black blood methods (I, 2,8,[9][10][11] can be classified largely into those utilizing the saturation effect, those utilizing dephasing, and those utilizing preinversion. Since by this method a large volume is excited in the coronal direction with a very short TR, blood flow signals within the slab are imaged black due to the saturation effect.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Black Blood Mr Angiography of the Liver during Breath Holding

Suto¹,

Ohuchi²,

Kimura³

et al. 1994

Acta Radiol

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In 2-D time-of-flight MR angiography (2-D TOF MRA) of the liver, artifacts caused by respiratory motion are unavoidable. Therefore, a 3-D black blood MRA of the liver was attempted in 7 healthy volunteers, using a 3-D gradient echo sequence which allows imaging during breath holding. 2-D TOF MRA was performed as well. In all subjects, 3-D MRA allowed visualization of the trunk, lst-, and 2nd-order branches of the portal vein without interruption. Right 3rd-order branches were visualized without interruption in 6 of 7 subjects (85%). However, with 2-D MRA, the transverse portion of the left main portal vein could not be visualized in any subject, and the periphery of the portal vein was less clear than with 3-D MRA.

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Section: Discussionmentioning

confidence: 99%