title: [Delineation of calf deep veins using 2D-TOF MR venography without contrast media: efficacy of tourniquet and leg-warming].
abstract: We evaluated the imaging quality of 2D-TOF MR venography of the lower part of the leg and the efficacy of a tourniquet around the knee and leg-warming. In 8 healthy volunteers, MR venography was carried out under the following four conditions: (a) usual MR venography, (b) MR venography with tourniquet around the knee, (c) MR venography after leg-warming and (d) MR venography with tourniquet after leg-warming. Our results suggested that MR venography with tourniquet after leg-warming is best suited for imaging the veins of the leg. We also compared the diagnostic image quality of MR venography and conventional contrast venography in 7 patients with varices. The results showed no significant differences between the two methods. We conclude that MR venography with tourniquet after leg-warming is a technique that provides reliable information about the veins of the leg.
authors.affiliation: Department of Radiology, Hiroshima Prefectural Hiroshima Hospital.
authors.forename: K
authors.initials: K
authors.lastname: Nagayoshi
authors.forename: M
authors.initials: M
authors.lastname: Okada
authors.forename: Y
authors.initials: Y
authors.lastname: Monzen
authors.forename: S
authors.initials: S
authors.lastname: Kimura
authors.forename: Y
authors.initials: Y
authors.lastname: Hamanaka
authors.forename: M
authors.initials: M
authors.lastname: Ochi
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
mesh_terms: D000328:Adult; D005260:Female; D006358:Hot Temperature; D006801:Humans; D007866:Leg / Q000098:blood supply*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010690:Phlebography; D014111:Tourniquets; D014680:Veins / Q000033:anatomy & histology