Hemodynamic characterization of focal hepatic lesions: Role of ferucarbotran-enhanced dynamic MR imaging using T2-weighted multishot spin-echo echo-planar sequence

Conventional spin-echo (SE) and contrast-enhanced dynamic MR imaging were performed on a 1.5 T superconductive unit for evaluation of myometrial lesions in postmolar gestational trophoblastic disease (GTD) in 10 women. MR imaging was done at the time of the initial examination (n=10), during (n=6), and after repeated courses of chemotherapy (n=10). The T2-weighted SE image revealed an enlarged uterus (n=7), disappearance of zonal anatomy (n=6), and heterogeneous signal intensities (n=8) with prominent flow voids (n=7). However, these abnormalities remained after repeated courses of chemotherapy, when the S-β-HCG level returned to the normal range. Myometrial lesions characteristically had marked enhancement with areas of unenhancement on dynamic MR images in patients with highly elevated S-β-HCG. Areas of contrast enhancement correlated with changes in S-β-HCG level. The enhancement was reduced with decrease in S-β-HCG level after repeated courses of chemotherapy. Six of 8 masses seen on T2-weighted images proved to be active trophoblastic lesions and 2 masses proved to be hematoma or necrosis. In 2 patients, abnormal myometrial lesions were detected only on contrast-enhanced dynamic MR imaging. These preliminary data indicate that contrast-enhanced dynamic MR imaging more clearly demonstrates myometrial involvement of postmolar GTD than conventional SE imaging.

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Characterization of time-enhancement curves of benign and malignant prostate tissue at dynamic MR imaging

European Radiology ◽

10.1007/s00330-002-1617-6 ◽

2003 ◽

Vol 13 (5) ◽

pp. 931-942 ◽

Cited By ~ 83

Author(s):

Olivier Rouvière ◽

Anne Raudrant ◽

René Ecochard ◽

Catherine Colin-Pangaud ◽

Carole Pasquiou ◽

...

Keyword(s):

Mr Imaging ◽

Prostate Tissue ◽

Dynamic Mr Imaging ◽

Dynamic Mr ◽

Malignant Prostate

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Role of dynamic MR imaging in obstructive sleep apnoea

Indian Journal of Otolaryngology and Head & Neck Surgery ◽

10.1007/s12070-008-0009-x ◽

2008 ◽

Vol 60 (1) ◽

pp. 25-29 ◽

Cited By ~ 6

Author(s):

Bhawna ◽

Roy Santosham ◽

Sujai Anand ◽

Santhosh Joseph

Keyword(s):

Mr Imaging ◽

Obstructive Sleep Apnoea ◽

Sleep Apnoea ◽

Dynamic Mr Imaging ◽

Obstructive Sleep ◽

Dynamic Mr

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A prospective assessment of breath-hold fast spin echo and inversion recovery fast spin echo techniques for detection and characterization of focal hepatic lesions

Magnetic Resonance Imaging ◽

10.1016/s0730-725x(00)00150-8 ◽

2000 ◽

Vol 18 (5) ◽

pp. 543-551 ◽

Cited By ~ 8

Author(s):

Randolph S Pawluk ◽

Joseph A Borrello ◽

Jeffrey J Brown ◽

Elizabeth G McFarland ◽

Scott A Mirowitz ◽

...

Keyword(s):

Spin Echo ◽

Inversion Recovery ◽

Fast Spin Echo ◽

Breath Hold ◽

Prospective Assessment ◽

Focal Hepatic Lesions ◽

Hepatic Lesions ◽

And Inversion ◽

Fast Spin

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Cirrhosis or Chronic Hepatitis: Evaluation of Small (≤2-cm) Early-Enhancing Hepatic Lesions with Serial Contrast-enhanced Dynamic MR Imaging

Radiology ◽

10.1148/radiol.2262011967 ◽

2003 ◽

Vol 226 (2) ◽

pp. 550-555 ◽

Cited By ~ 109

Author(s):

Ayame Shimizu ◽

Katsuyoshi Ito ◽

Shinji Koike ◽

Takeshi Fujita ◽

Kensaku Shimizu ◽

...

Keyword(s):

Chronic Hepatitis ◽

Mr Imaging ◽

Dynamic Mr Imaging ◽

Contrast Enhanced ◽

Hepatic Lesions ◽

Dynamic Mr

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Detection of focal hepatic lesions with MR imaging: prospective comparison of T2-weighted fast spin-echo with and without fat suppression, T2-weighted breath-hold fast spin-echo, and gadolinium chelate-enhanced 3D gradient-recalled imaging.

American Journal of Roentgenology ◽

10.2214/ajr.166.5.8615254 ◽

1996 ◽

Vol 166 (5) ◽

pp. 1115-1121 ◽

Cited By ~ 45

Author(s):

P Soyer ◽

S C de Givry ◽

C Gueye ◽

S Lenormand ◽

E Somveille ◽

...

Keyword(s):

Mr Imaging ◽

Spin Echo ◽

Fat Suppression ◽

Fast Spin Echo ◽

Breath Hold ◽

Gadolinium Chelate ◽

Prospective Comparison ◽

Focal Hepatic Lesions ◽

Hepatic Lesions ◽

Fast Spin

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Dynamic MR Imaging of Hepatoma Treated by Transcatheter Arterial Embolization Therapy

Acta Radiologica ◽

10.1177/028418519303400319 ◽

1993 ◽

Vol 34 (3) ◽

pp. 303-308 ◽

Cited By ~ 14

Author(s):

Y. Yamashita ◽

S. Yoshimatsu ◽

M. Sumi ◽

M. Harada ◽

M. Takahashi

Keyword(s):

Mr Imaging ◽

Spin Echo ◽

Arterial Embolization ◽

Gelatin Sponge ◽

Dynamic Ct ◽

Tumor Vascularity ◽

Embolization Therapy ◽

Dynamic Mr Imaging ◽

Before And After ◽

Dynamic Mr

The effect of transcatheter arterial chemo-embolization therapy (TACE) for hepatoma was evaluated with dynamic MR imaging with Gd-DTPA in 37 patients (44 tumors). TACE was performed using Lipiodol/cis-platinum and gelatin sponge (or microspheres) as an embolic material. All patients were examined with dynamic CT and MR imaging before and after treatment. On conventional spin echo images, changes of signal intensity after treatment varied regardless of presence of Lipiodol. Dynamic MR imaging revealed changes of tumor vascularity before and after treatment. On histologic correlation, areas of persistent tumor enhancement on dynamic MR imaging corresponded to areas of viable tumor cells while areas of nonenhancement corresponded to areas of necrosis. Dynamic MR imaging was superior in contrast resolution and was not influenced by the presence of Lipiodol compared with dynamic CT, and therefore residual viable tumors were better defined by dynamic MR imaging.

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