Two Cases of Hepatic Encephalopathy Associated with a High-intensity Area in the Basal Ganglia on T1-weighted MR Images.

1993 ◽  
Vol 30 (8) ◽  
pp. 709-713 ◽  
Author(s):  
Masanaka Takeda ◽  
Hisao Tachibana ◽  
Bungo Okuda ◽  
Minoru Sugita
Keyword(s):  
Hepatic Encephalopathy ◽  
Basal Ganglia ◽  
High Intensity ◽  
Mr Images

scholarly journals Reduction of Increased Signal Intensity in the Basal Ganglia on T1-Weighted MR Images during Treatment of Hepatic Encephalopathy.

1993 ◽  
Vol 32 (1) ◽  
pp. 10-14 ◽  
Author(s):  
Akiharu WATANABE ◽  
Jyun MURAKAMI ◽  
Takao ANDO ◽  
Osamu HIOKI ◽  
Hiroyuki WAKABAYASHI ◽  
...  
Keyword(s):  
Hepatic Encephalopathy ◽  
Basal Ganglia ◽  
Signal Intensity ◽  
Mr Images

scholarly journals High-intensity basal ganglia lesions on T1-weighted MR images in neurofibromatosis.

1990 ◽  
Vol 154 (2) ◽  
pp. 369-373 ◽  
Author(s):  
S A Mirowitz ◽  
K Sartor ◽  
M Gado
Keyword(s):  
Basal Ganglia ◽  
High Intensity ◽  
Mr Images

scholarly journals A Case of Ovarian Pregnancy Diagnosed by MRI

2015 ◽  
Vol 2015 ◽  
pp. 1-3 ◽  
Author(s):  
Shingo Io ◽  
Masaaki Hasegawa ◽  
Takashi Koyama
Keyword(s):  
Ectopic Pregnancy ◽  
High Intensity ◽  
Transvaginal Ultrasonography ◽  
Mr Images ◽  
Diagnostic Challenge ◽  
Rare Form ◽  
Low Intensity ◽  
Ovarian Pregnancy ◽  
Gestational Sac ◽  
The Right

Ovarian pregnancy is a rare form of ectopic pregnancy, causing a great diagnostic challenge. We report a case of ovarian pregnancy in a 42-year-old woman, in whom MRI successfully demonstrated the implantation in the ovary. Transvaginal ultrasonography showed an echogenic mass in the right ovary but failed to demonstrate tubal pregnancy. T2-weighted MR images disclosed a gestational sac structure in the right ovary, which exhibited heterogeneous high intensity intermingled with punctate foci of distinct low intensity. MRI may be a useful tool for diagnosing ovarian pregnancy, by demonstrating a gestational sac in the ovary.

scholarly journals Segmentation Method for Magnetic Resonance-Guided High-Intensity Focused Ultrasound Therapy Planning

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
A. Vargas-Olivares ◽  
O. Navarro-Hinojosa ◽  
M. Maqueo-Vicencio ◽  
L. Curiel ◽  
M. Alencastre-Miranda ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
High Intensity ◽  
Focused Ultrasound ◽  
High Intensity Focused Ultrasound ◽  
Segmentation Algorithm ◽  
Focal Region ◽  
Therapy Planning ◽  
Mr Images ◽  
Monitoring Method ◽  
Data Set

High-intensity focused ultrasound (HIFU) is a minimally invasive therapy modality in which ultrasound beams are concentrated at a focal region, producing a rise of temperature and selective ablation within the focal volume and leaving surrounding tissues intact. HIFU has been proposed for the safe ablation of both malignant and benign tissues and as an agent for drug delivery. Magnetic resonance imaging (MRI) has been proposed as guidance and monitoring method for the therapy. The identification of regions of interest is a crucial procedure in HIFU therapy planning. This procedure is performed in the MR images. The purpose of the present research work is to implement a time-efficient and functional segmentation scheme, based on the watershed segmentation algorithm, for the MR images used for the HIFU therapy planning. The achievement of a segmentation process with functional results is feasible, but preliminary image processing steps are required in order to define the markers for the segmentation algorithm. Moreover, the segmentation scheme is applied in parallel to an MR image data set through the use of a thread pool, achieving a near real-time execution and making a contribution to solve the time-consuming problem of the HIFU therapy planning.

Cerebral blood flow in basal ganglia is correlated with clinical signs of hepatic encephalopathy in patients with liver cirrhosis

2002 ◽  
Vol 97 (3) ◽  
pp. 763-764 ◽  
Author(s):  
Motoh Iwasa ◽  
Masahiko Kaito ◽  
Yukihiko Adachi ◽  
Yuri Watanabe ◽  
Kaname Matsumura ◽  
...  
Keyword(s):  
Blood Flow ◽  
Liver Cirrhosis ◽  
Cerebral Blood Flow ◽  
Hepatic Encephalopathy ◽  
Basal Ganglia ◽  
Clinical Signs

High-intensity lesion on T1-weighted MR images in neurofibromatosis type 1: a case of premalignant lesion

1997 ◽  
Vol 139 (11) ◽  
pp. 1085-1087 ◽  
Author(s):  
Y. Miaux ◽  
A. Guermazi ◽  
P. Cornu ◽  
K. Mokhtari ◽  
B. Singer ◽  
...  
Keyword(s):  
Neurofibromatosis Type 1 ◽  
High Intensity ◽  
Neurofibromatosis Type ◽  
Premalignant Lesion ◽  
Mr Images ◽  
Intensity Lesion

Hyperintense basal ganglia on T1-weighted MR images in patients receiving parenteral nutrition.

Radiology ◽  
1991 ◽  
Vol 181 (1) ◽  
pp. 117-120 ◽  
Author(s):  
S A Mirowitz ◽  
T J Westrich ◽  
J D Hirsch
Keyword(s):  
Basal Ganglia ◽  
Parenteral Nutrition ◽  
Mr Images

Segmental high intensity on T1-weighted hepatic MR images

2004 ◽  
Vol 30 (1) ◽  
pp. 60-64 ◽  
Author(s):  
M. Hashimoto ◽  
Y. Akabane ◽  
J. Heianna ◽  
T. Iwama ◽  
E. Tate ◽  
...  
Keyword(s):  
High Intensity ◽  
Mr Images
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