Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 73-77 |
| Number of pages | 5 |
| Journal | Magnetic Resonance in Medical Sciences |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2004 |
| Externally published | Yes |
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Keywords
- Balanced turbo field echo
- Flow velocity
- Gd-DTPA
- K-space ordering
- Steady state free precession
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Optimization of Gd-DTPA-enhanced balanced turbo field echo sequence in abdominal imaging : Clinical application. / Nasu, Katsuhiro; Kuroki, Yoshifumi; Kuroki, Seiko; Murakami, Koji; Nawano, Shigeru; Moriyama, Noriyuki.
In: Magnetic Resonance in Medical Sciences, Vol. 3, No. 2, 2004, p. 73-77.Research output: Contribution to journal › Article
}
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
UR - http://www.scopus.com/inward/record.url?scp=24344471073&partnerID=8YFLogxK
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U2 - 10.2463/mrms.3.73
DO - 10.2463/mrms.3.73
M3 - Article
VL - 3
SP - 73
EP - 77
JO - Magnetic Resonance in Medical Sciences
JF - Magnetic Resonance in Medical Sciences
SN - 1347-3182
IS - 2
ER -