PURPOSE: To refine, adapt, and evaluate the technical aspects of fluoroscopic tracking for generating dual-station high-spatial-resolution MR angiograms of the calves and feet using a single injection of contrast material. MATERIALS AND METHODS: Nine subjects (seven healthy volunteers followed by two patients) were imaged using a two-station calf-foot three-dimensional time-resolved bolus chase MR angiography protocol which provided <1.0 mm(3) spatial resolution throughout and 2.5- and 6.6-s frame times at the calf and foot stations, respectively. Real-time reconstruction of calf station time frames allowed visually guided triggering of table advance to the foot station. The studies were independently read and scored by two radiologists in six image quality categories. RESULTS: On average, overall diagnostic quality at the calf and foot stations was good-to-excellent, the calf arteries and all but the smallest foot arteries had good-to-excellent signal and sharpness, artifact and venous contamination were minor, and signal continuity across the inter-station interface was good. CONCLUSION: The feasibility of fluoroscopic tracking has been demonstrated as an efficient approach for high spatiotemporal imaging of the arteries of the calves and feet with good-to-excellent diagnostic quality and low degrading venous contamination.
PURPOSE: To refine, adapt, and evaluate the technical aspects of fluoroscopic tracking for generating dual-station high-spatial-resolution MR angiograms of the calves and feet using a single injection of contrast material. MATERIALS AND METHODS: Nine subjects (seven healthy volunteers followed by two patients) were imaged using a two-station calf-foot three-dimensional time-resolved bolus chase MR angiography protocol which provided <1.0 mm(3) spatial resolution throughout and 2.5- and 6.6-s frame times at the calf and foot stations, respectively. Real-time reconstruction of calf station time frames allowed visually guided triggering of table advance to the foot station. The studies were independently read and scored by two radiologists in six image quality categories. RESULTS: On average, overall diagnostic quality at the calf and foot stations was good-to-excellent, the calf arteries and all but the smallest foot arteries had good-to-excellent signal and sharpness, artifact and venous contamination were minor, and signal continuity across the inter-station interface was good. CONCLUSION: The feasibility of fluoroscopic tracking has been demonstrated as an efficient approach for high spatiotemporal imaging of the arteries of the calves and feet with good-to-excellent diagnostic quality and low degrading venous contamination.
Authors: S J Riederer; M A Bernstein; J F Breen; R F Busse; R L Ehman; S B Fain; T C Hulshizer; J Huston; B F King; D G Kruger; P J Rossman; S Shah Journal: Radiology Date: 2000-05 Impact factor: 11.105
Authors: Casey P Johnson; Clifton R Haider; Eric A Borisch; James F Glockner; Stephen J Riederer Journal: Magn Reson Med Date: 2010-09 Impact factor: 4.668
Authors: Clifton R Haider; Stephen J Riederer; Eric A Borisch; James F Glockner; Roger C Grimm; Thomas C Hulshizer; Thanila A Macedo; Petrice M Mostardi; Phillip J Rossman; Terri J Vrtiska; Phillip M Young Journal: J Magn Reson Imaging Date: 2011-07 Impact factor: 4.813
Authors: Ulrike I Attenberger; Stefan Haneder; John N Morelli; Steffen J Diehl; Stefan O Schoenberg; Henrik J Michaely Journal: Radiology Date: 2010-10-19 Impact factor: 11.105
Authors: Martin R Prince; Shalini G Chabra; Richard Watts; Catherine Z Chen; Priscilla A Winchester; Neil M Khilnani; David Trost; Harry A Bush; K Craig Kent; Yi Wang Journal: Radiology Date: 2002-07 Impact factor: 11.105
Authors: Casey P Johnson; Paul T Weavers; Eric A Borisch; Roger C Grimm; Thomas C Hulshizer; Christine C LaPlante; Phillip J Rossman; James F Glockner; Phillip M Young; Stephen J Riederer Journal: Radiology Date: 2014-03-14 Impact factor: 11.105
Authors: Eric G Stinson; Eric A Borisch; Casey P Johnson; Joshua D Trzasko; Phillip M Young; Stephen J Riederer Journal: J Magn Reson Imaging Date: 2013-07-29 Impact factor: 4.813
Authors: Paul T Weavers; Eric A Borisch; Tom C Hulshizer; Phillip J Rossman; Phillip M Young; Casey P Johnson; Jessica McKay; Christopher C Cline; Stephen J Riederer Journal: Magn Reson Imaging Date: 2015-10-31 Impact factor: 2.546