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Whole-Body Three-dimensional MR Angiography with a Rolling Table Platform: Initial Clinical Experience¹

¹ From the Department of Diagnostic and Interventional Radiology, University Hospital Essen, Hufelandstrasse 55, 45122 Essen, Germany (M.G., H.H.Q., J.F.D., M.E.L., J.B., C.U.H., S.B., H.K., S.G.R.); and Siemens Medical Systems, Erlangen, Germany (M.S.). Received August 8, 2001; revision requested September 28; revision received November 5; accepted January 7, 2002. Address correspondence to M.G. (e-mail: mathias.goyen@uni-essen.de).

View larger version (110K): [in a new window]   Figure 1a. Volunteer lies on the rolling table platform. (a) First of five stations for the table and coil is shown outside the magnet tunnel, for demonstration purposes. The coil holder, including the circularly polarized body array, rests over the face of the patient. (b) Third of five stations, after the table was manually moved two stations. Volunteer glides between the permanently installed spine array and the body array mounted on the coil holder. (c) Fifth of five stations. After an imaging time of 72 seconds (five images, each with 12-second imaging time and four 3-second pauses for manual table movement), 3D whole-body MR angiography has been performed.

View larger version (109K): [in a new window]   Figure 1b. Volunteer lies on the rolling table platform. (a) First of five stations for the table and coil is shown outside the magnet tunnel, for demonstration purposes. The coil holder, including the circularly polarized body array, rests over the face of the patient. (b) Third of five stations, after the table was manually moved two stations. Volunteer glides between the permanently installed spine array and the body array mounted on the coil holder. (c) Fifth of five stations. After an imaging time of 72 seconds (five images, each with 12-second imaging time and four 3-second pauses for manual table movement), 3D whole-body MR angiography has been performed.

View larger version (106K): [in a new window]   Figure 1c. Volunteer lies on the rolling table platform. (a) First of five stations for the table and coil is shown outside the magnet tunnel, for demonstration purposes. The coil holder, including the circularly polarized body array, rests over the face of the patient. (b) Third of five stations, after the table was manually moved two stations. Volunteer glides between the permanently installed spine array and the body array mounted on the coil holder. (c) Fifth of five stations. After an imaging time of 72 seconds (five images, each with 12-second imaging time and four 3-second pauses for manual table movement), 3D whole-body MR angiography has been performed.

View larger version (41K): [in a new window]   Figure 2a. Whole-body 3D MR angiograms in a 29-year-old male volunteer were obtained with (a) the body coil and (b) the rolling table platform with the integrated phased-array torso surface coil. Five slightly overlapping coronal 3D data sets were collected during 72 seconds with a fast low-angle shot 3D MR angiographic sequence. Gadobenate dimeglumine was administered at a dose of 0.2 mmol/kg at a rate of 1.3 mL/sec for the first half of the contrast agent volume and at a rate of 0.7 mL/sec for the second half, followed by a 30-mL saline flush that was automatically injected. b depicts the arterial morphology more clearly, especially in the infrapopliteal vessel segments.

View larger version (35K): [in a new window]   Figure 2b. Whole-body 3D MR angiograms in a 29-year-old male volunteer were obtained with (a) the body coil and (b) the rolling table platform with the integrated phased-array torso surface coil. Five slightly overlapping coronal 3D data sets were collected during 72 seconds with a fast low-angle shot 3D MR angiographic sequence. Gadobenate dimeglumine was administered at a dose of 0.2 mmol/kg at a rate of 1.3 mL/sec for the first half of the contrast agent volume and at a rate of 0.7 mL/sec for the second half, followed by a 30-mL saline flush that was automatically injected. b depicts the arterial morphology more clearly, especially in the infrapopliteal vessel segments.

View larger version (39K): [in a new window]   Figure 3a. Anteroposterior (a) intraarterial DSA image and (b) whole-body fast low-angle shot 3D MR angiogram obtained with the rolling table platform in a 63-year-old male patient with history of peripheral vascular disease and a pain-free walking distance of less than 200 m. In a, occlusion of the left common and external iliac arteries and a high-grade stenosis of the left superficial femoral artery are depicted. In b, the findings in a are depicted as clearly. (c) MR angiogram depicts a high-grade stenosis (arrow) of the left external carotid artery that was initially unsuspected.

View larger version (32K): [in a new window]   Figure 3b. Anteroposterior (a) intraarterial DSA image and (b) whole-body fast low-angle shot 3D MR angiogram obtained with the rolling table platform in a 63-year-old male patient with history of peripheral vascular disease and a pain-free walking distance of less than 200 m. In a, occlusion of the left common and external iliac arteries and a high-grade stenosis of the left superficial femoral artery are depicted. In b, the findings in a are depicted as clearly. (c) MR angiogram depicts a high-grade stenosis (arrow) of the left external carotid artery that was initially unsuspected.

View larger version (138K): [in a new window]   Figure 3c. Anteroposterior (a) intraarterial DSA image and (b) whole-body fast low-angle shot 3D MR angiogram obtained with the rolling table platform in a 63-year-old male patient with history of peripheral vascular disease and a pain-free walking distance of less than 200 m. In a, occlusion of the left common and external iliac arteries and a high-grade stenosis of the left superficial femoral artery are depicted. In b, the findings in a are depicted as clearly. (c) MR angiogram depicts a high-grade stenosis (arrow) of the left external carotid artery that was initially unsuspected.