TY - JOUR
T1 - Optimization of Gd-DTPA-enhanced balanced turbo field echo sequence in abdominal imaging
T2 - Clinical application
AU - Nasu, Katsuhiro
AU - Kuroki, Yoshifumi
AU - Kuroki, Seiko
AU - Murakami, Koji
AU - Nawano, Shigeru
AU - Moriyama, Noriyuki
PY - 2004
Y1 - 2004
N2 - Purpose: We performed MRI examinations of patients in order to confirm the enhancement effect of the balanced turbo field echo (bTFE) sequence with centric view ordering and SPIR (SPIR-centric-bTFE) as mentioned in the prior paper, and to evaluate the actual image quality of this sequence. Materials and Methods: The upper abdomens of 30 patients with various abdominal disorders were examined with the SPIR-centric-bTFE sequence before and after Gd-DTPA administration. To assess the enhancement effect of Gd-DTPA, ROI measurements were taken in the aorta, superior mesenteric artery, portal vein, liver and bile juice in the common bile duct in each patient both in pre- and postcontrast images. Visual evaluations were also carried out in order to depict the peripheral vessels in the peritoneal fat and the apparent brightness of the soft-tissue organs. Results: In all patients, the signal of the arteries after Gd-DTPA administration increased by about 50% compared with precontrast images. On the other hand, the veins and the liver showed a signal gain of less than 20% in postcontrast images. Consequently, only the signal of the arteries appeared enhanced in the postcontrast images. The visual evaluation revealed that postcontrast SPIR-centric-bTFE acquisition can depict the thin vessels clearly and the abdominal soft-tissue organs brightly. Conclusion: The balanced turbo field echo sequence with centric view ordering and SPIR after Gd-DTPA injection was considered the most appropriate protocol when this sequence was employed for abdominal imaging.
AB - Purpose: We performed MRI examinations of patients in order to confirm the enhancement effect of the balanced turbo field echo (bTFE) sequence with centric view ordering and SPIR (SPIR-centric-bTFE) as mentioned in the prior paper, and to evaluate the actual image quality of this sequence. Materials and Methods: The upper abdomens of 30 patients with various abdominal disorders were examined with the SPIR-centric-bTFE sequence before and after Gd-DTPA administration. To assess the enhancement effect of Gd-DTPA, ROI measurements were taken in the aorta, superior mesenteric artery, portal vein, liver and bile juice in the common bile duct in each patient both in pre- and postcontrast images. Visual evaluations were also carried out in order to depict the peripheral vessels in the peritoneal fat and the apparent brightness of the soft-tissue organs. Results: In all patients, the signal of the arteries after Gd-DTPA administration increased by about 50% compared with precontrast images. On the other hand, the veins and the liver showed a signal gain of less than 20% in postcontrast images. Consequently, only the signal of the arteries appeared enhanced in the postcontrast images. The visual evaluation revealed that postcontrast SPIR-centric-bTFE acquisition can depict the thin vessels clearly and the abdominal soft-tissue organs brightly. Conclusion: The balanced turbo field echo sequence with centric view ordering and SPIR after Gd-DTPA injection was considered the most appropriate protocol when this sequence was employed for abdominal imaging.
KW - Balanced turbo field echo
KW - Flow velocity
KW - Gd-DTPA
KW - K-space ordering
KW - Steady state free precession
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U2 - 10.2463/mrms.3.73
DO - 10.2463/mrms.3.73
M3 - Article
C2 - 16093622
AN - SCOPUS:24344471073
VL - 3
SP - 73
EP - 77
JO - Magnetic Resonance in Medical Sciences
JF - Magnetic Resonance in Medical Sciences
SN - 1347-3182
IS - 2
ER -