scholarly journals Update Your Knowledge of Abdominal MRI: Recent Results, Which May Change Your Practice

2017 ◽  
Vol 16 (2) ◽  
pp. 87-88
Author(s):  
Utaroh Motosugi
Keyword(s):  
Abdominal Mri

scholarly journals Effective bowel motion reduction in mouse abdominal MRI using hyoscine butylbromide

2021 ◽  
Author(s):  
Carlos Bilreiro ◽  
Francisca F. Fernandes ◽  
Luísa Andrade ◽  
Cristina Chavarrías ◽  
Rui V. Simões ◽  
...  
Keyword(s):  
Hyoscine Butylbromide ◽  
Abdominal Mri ◽  
Bowel Motion

scholarly journals Role of Radiotherapy in Recurrent Intra-Abdominal Yolk Sac Tumor

2021 ◽  
pp. 1010-1018
Author(s):  
Marhendra Satria Utama ◽  
Andi Kurniadi ◽  
A.A. Citra Yunda Prahastiwi ◽  
Antony A. Adibrata
Keyword(s):  
Case Reports ◽  
Yolk Sac ◽  
Yolk Sac Tumor ◽  
Appropriate Treatment ◽  
Curative Radiotherapy ◽  
Chief Complaints ◽  
Abdominal Mri ◽  
Malignant Germ Cell Tumor

Yolk sac tumor (YST) is a rare malignant germ cell tumor with no appropriate treatment strategy to date. However, patients are treated on a case-to-case basis as per various case reports that have been published. Here, we present a case of 27-year-old female patient who presented to us with chief complaints of severe abdominal pain associated with leucorrhea. She previously had a similar pain episode, which was then evaluated by a multidisciplinary team. She was diagnosed with YST. After that, she underwent 6 cycles of chemotherapy, but there was no improvement. Then the medical oncologist referred her to performed radiotherapy. Then, the radiation oncologist decided to give her curative radiotherapy of 3D-CRT. After completing her sessions, she felt better and clinically improving. After that, she was discharged and scheduled a follow-up visit for first evaluation. At her follow-up visit, she was feeling well, and we decided to have an abdominal MRI.

scholarly journals Applying MRI Intensity Normalization on Non-Bone Tissues to Facilitate Pseudo-CT Synthesis from MRI

Diagnostics ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 816
Author(s):  
Kuei-Yuan Hou ◽  
Hao-Yuan Lu ◽  
Ching-Ching Yang
Keyword(s):  
Mean Value ◽  
Tissue Type ◽  
Routine Practice ◽  
Intensity Level ◽  
Mean Values ◽  
Conversion Model ◽  
Ratio Image ◽  
Abdominal Mri ◽  
High Level ◽  
Intensity Normalization

This study aimed to facilitate pseudo-CT synthesis from MRI by normalizing MRI intensity of the same tissue type to a similar intensity level. MRI intensity normalization was conducted through dividing MRI by a shading map, which is a smoothed ratio image between MRI and a three-intensity mask. Regarding pseudo-CT synthesis from MRI, a conversion model based on a three-layer convolutional neural network was trained and validated. Before MRI intensity normalization, the mean value ± standard deviation of fat tissue in 0.35 T chest MRI was 297 ± 73 (coefficient of variation (CV) = 24.58%), which was 533 ± 91 (CV = 17.07%) in 1.5 T abdominal MRI. The corresponding results were 149 ± 32 (CV = 21.48%) and 148 ± 28 (CV = 18.92%) after intensity normalization. With regards to pseudo-CT synthesis from MRI, the differences in mean values between pseudo-CT and real CT were 3, 15, and 12 HU for soft tissue, fat, and lung/air in 0.35 T chest imaging, respectively, while the corresponding results were 3, 14, and 15 HU in 1.5 T abdominal imaging. Overall, the proposed workflow is reliable in pseudo-CT synthesis from MRI and is more practicable in clinical routine practice compared with deep learning methods, which demand a high level of resources for building a conversion model.

Limited abdominal MRI in the evaluation of acute right upper quadrant pain

2003 ◽  
Vol 28 (5) ◽  
pp. 643-651 ◽  
Author(s):  
K. Y. Oh ◽  
M. Gilfeather ◽  
A. Kennedy ◽  
C. Glastonbury ◽  
D. Green ◽  
...  
Keyword(s):  
Quadrant Pain ◽  
Abdominal Mri

IRMA study: Prevalence of subdiaphragmatic visceral infarction in ischemic stroke and atrial fibrillation

2016 ◽  
Vol 12 (4) ◽  
pp. 421-424 ◽  
Author(s):  
David Weisenburger-Lile ◽  
Delphine Lopez ◽  
Stephanie Russel ◽  
Jean-Emmanuel Kahn ◽  
Ana Veiga Hellmann ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Ischemic Stroke ◽  
High Risk ◽  
Median Time ◽  
Cryptogenic Stroke ◽  
Abdominal Mri ◽  
Frequent Localization

Background Occult atrial fibrillation (AF) may, in part, explain cryptogenic stroke. A 22% prevalence of subdiaphragmatic visceral infarction (SDVI) among patients with ischemic stroke (IS) due to AF has been reported, using abdominal MRI. We sought to assess the reproducibility of this method and to confirm that SDVI is more prevalent in cases of AF-caused IS than in IS of other etiologies. Methods In consecutive patients admitted to our hospital, we compared SDVI prevalence in three groups: patients with IS due to AF (IS+/AF+ group), patients with stroke of another determined cause (IS+/AF− group) and patients with AF without stroke (IS−/AF+ group). Results A total of 111 patients were included. The median time between inclusion and abdominal MRI was six days. SDVI was more frequent in the IS+/AF+ group ( n = 10; 21.3%), than in IS+/AF− ( n = 1; 3.3%) and IS−/AF+ ( n = 0) groups, p = 0.002. The most frequent localization was the kidney. Conclusions The prevalence of SDVI was higher among patients with AF-caused IS. In cases of cryptogenic stroke, a positive abdominal MRI may suggest occult AF as the cause and identify a high risk of AF in this subgroup of patients.

scholarly journals Texture feature based automated seeded region growing in abdominal MRI segmentation

2009 ◽  
Vol 02 (01) ◽  
pp. 1-8 ◽  
Author(s):  
Jie Wu ◽  
Skip Poehlman ◽  
Michael D. Noseworthy ◽  
Markad V. Kamath
Keyword(s):  
Texture Feature ◽  
Region Growing ◽  
Mri Segmentation ◽  
Seeded Region Growing ◽  
Abdominal Mri ◽  
Feature Based

scholarly journals The Role of Endoscopic Ultrasound in Acute Cholecystitis

2021 ◽  
Author(s):  
Cosmas Rinaldi A. Lesmana ◽  
Laurentius A. Lesmana
Keyword(s):  
Clinical Practice ◽  
Acute Cholecystitis ◽  
Endoscopic Ultrasound ◽  
Simple Procedure ◽  
Gallstone Disease ◽  
Percutaneous Approach ◽  
Abdominal Mri ◽  
Patient’S Outcome ◽  
Therapeutic Tools

Acute cholecystitis (AC) is one of challenging clinical conditions in biliary disorders as it can carry high morbidity and mortality. Gallstone disease is still the main cause of AC in clinical practice. Transabdominal ultrasound, abdominal CT scan and abdominal MRI are the standard diagnostic tools in AC, however, some obstacles can be found which are associated to the patient’s factor, anatomy or anomaly of biliary system, the disease severity, and the operator. Cholecystectomy is still the primary choice management in AC condition, however, several issues need to be encountered, such as critically ill condition, sepsis, and patient’s comorbidity. Percutaneous approach has become an alternative as it is considered as a simple procedure to be performed in clinical practice. Catheter dislodgement, the risk of bile leakage, and uncooperative patients have raised major concerns for this procedure. Another method, such as endoscopic approach has been studied as well and it seemed to have more advantage when compared to the percutaneous approach. Recently, endoscopic ultrasound (EUS) has been used as a combined diagnostic as well as therapeutic tools in managing biliary disorders. Recent evidences about the role of EUS approach for gallbladder drainage (EUS GBD) in patients who unsuitable for surgery have emerged in the past one decade. However, comprehensive evaluation before which approach is the best option is needed as expertise, cost, and patient’s outcome prediction are the most important factors to be considered in the real clinical practice.

Weakly supervised semantic segmentation of Crohn's disease tissues from abdominal MRI

2013 ◽  
Author(s):  
Dwarikanath Mahapatra ◽  
Alexander Vezhnevets ◽  
Peter J. Schuffler ◽  
Jeroen A.W. Tielbeek ◽  
Franciscus M. Vos ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Semantic Segmentation ◽  
Abdominal Mri ◽  
Weakly Supervised
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