scholarly journals Diagnostic Modalities in Colorectal Cancer –Endoscopy, Ct and Pet Scanning, Magnetic Resonance Imaging (Mri), Endoluminal Ultrasound and Intraoperative Ultrasound

10.5772/57508 ◽  
2014 ◽  
Author(s):  
Valentin Ignatov ◽  
Nikola Kolev ◽  
Anton Tonev ◽  
Shteryu Shterev ◽  
Elitsa Encheva ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Colorectal Cancer ◽  
Magnetic Resonance ◽  
Intraoperative Ultrasound ◽  
Resonance Imaging ◽  
Endoluminal Ultrasound ◽  
Pet Scanning ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic Modalities

Radiologically and pathologically detected vascular invasion in colorectal cancer – a call for magnetic resonance imaging (MRI) liver

2018 ◽  
Vol 73 ◽  
pp. e2-e3
Author(s):  
Nabil Sherif Mahmood ◽  
Vincent Leung ◽  
Ravivarma Balasubramaniam ◽  
Biju Thomas ◽  
Ingrid Britton ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Colorectal Cancer ◽  
Magnetic Resonance ◽  
Vascular Invasion ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Technology Assessment in Different Nations and Lessons from a Cross-Sectional Survey of Magnetic Resonance Imaging (MRI) Diffusion

1985 ◽  
Vol 1 (3) ◽  
pp. 515-536 ◽  
Author(s):  
Paul F. Gross
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cost Effectiveness ◽  
Magnetic Resonance ◽  
Medical Technology ◽  
Resonance Imaging ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic Modalities ◽  
Made In

Magnetic resonance imaging (MRI) is a rapidly evolving medical technology which has become widely diffused before comprehensive assessment of its safety, efficacy, cost-effectiveness, and relative cost-effectiveness compared with diagnostic modalities that it seems most likely to replace could be made. In early 1982 there were fewer than ten units worldwide. In August 1984, there were about 150 units and the figure will be closer to 300 by the end of 1985.

Magnetic Resonance Imaging and Intraoperative Neurosonography in Syringomyelia

Neurosurgery ◽  
1987 ◽  
Vol 20 (4) ◽  
pp. 599-605 ◽  
Author(s):  
Jack E. Wilberger ◽  
Joseph C. Maroon ◽  
Richard E. Prostko ◽  
Parviz Baghai ◽  
Irwin Beckman ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Diagnostic Imaging ◽  
Intraoperative Ultrasound ◽  
Sitting Position ◽  
Resonance Imaging ◽  
Computed Tomographic ◽  
Controversial Problem ◽  
Magnetic Resonance Imaging Mri

Abstract Treatment of syringomyelia remains a difficult and controversial problem. However, the recent advent of magnetic resonance imaging (MRI) and intraoperative ultrasound allows a more precise approach to the diagnosis and management of this disorder. Experience with 27 cases of syringomyelia has shown that MRI is superior to all other forms of diagnostic imaging for the exact anatomical delineation of syrinxes and other spinal cord cavities. One-third of the syrinxes demonstrated by MRI were either not adequately visualized or missed by myelography and/or computed tomographic scanning. Intraoperative ultrasound has been used to allow more precise operative approaches to the syrinx as well as to guide the exact placement of shunt tubes into syrinx cavities. A method has also been developed to allow intraoperative ultrasound of the spinal cord with patients in the sitting position.

Magnetic resonance imaging and brainstem auditory evoked responses in the diagnosis of cerebellar cortical degeneration in american staffordshire terriers

2013 ◽  
Vol 61 (1) ◽  
pp. 9-18 ◽  
Author(s):  
Miłosława Kwiatkowska ◽  
Andrzej Pomianowski ◽  
Zbigniew Adamiak ◽  
Aneta Bocheńska
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Evoked Responses ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Auditory Evoked Responses ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic Modalities ◽  
The Right ◽  
Cerebellar Cortical Degeneration

The aim of the study was to determine the diagnostic usefulness of magnetic resonance imaging (MRI) and brainstem auditory evoked responses (BAER) in dogs suspected of having cerebellar cortical degeneration (CCD). In the years 2009–2011, six dogs with suspected CCD were examined. Both MRI and BAER examinations revealed abnormalities in all dogs (100%). By MRI, T2-weighted midsagittal images revealed an increased amount of cerebrospinal fluid (CSF) surrounding the cerebellum within the sulci of the folia in all dogs (100%). In 4 out of the 6 dogs (66.66%), cerebellar hypoplasia was more visible in the region of the dorsal cerebellar lobules. In 5 out of the 6 dogs (83.33%), the fourth ventricle was enlarged. In our studies, the brain to cerebellum ratio evaluated on the midsagittal image was 11.93%, in comparison to 14.9% in normal dogs. By BAER examination, the amplitude of the first and second waves was diminished and III–V interlatency was prolonged in 5 out of the 6 dogs (83.33%). In one out of the 6 dogs (16.67%), only the III–V interlatency was prolonged. In one dog (16.67%), somato-nervous deafness in the left ear was detected, whereas in the right ear the III–V interlatency was prolonged. MRI of the cerebellum is a reliable method for the antemortem diagnosis of CCD in American Staffordshire terriers, as is BAER examination. BAER is an objective diagnostic tool, which — along with other diagnostic modalities — can be helpful in the assessment, management and follow-up of dogs with cerebellar abiotrophy. It proved to be useful in determining the severity of neurological lesions in comparison to MRI findings, as well as in assessing the prognosis.

scholarly journals Towards automated correction of brain shift using deep deformable magnetic resonance imaging-intraoperative ultrasound (MRI-iUS) registration

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Ramy A. Zeineldin ◽  
Mohamed E. Karar ◽  
Jan Coburger ◽  
Christian R. Wirtz ◽  
Franziska Mathis-Ullrich ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mean Squared Error ◽  
Intraoperative Ultrasound ◽  
Brain Shift ◽  
Resonance Imaging ◽  
Registration Method ◽  
Brain Deformation ◽  
Preoperative Magnetic Resonance ◽  
Magnetic Resonance Imaging Mri

AbstractIntraoperative brain deformation, so-called brain shift, affects the applicability of preoperative magnetic resonance imaging (MRI) data to assist the procedures of intraoperative ultrasound (iUS) guidance during neurosurgery. This paper proposes a deep learning-based approach for fast and accurate deformable registration of preoperative MRI to iUS images to correct brain shift. Based on the architecture of 3D convolutional neural networks, the proposed deep MRI-iUS registration method has been successfully tested and evaluated on the retrospective evaluation of cerebral tumors (RESECT) dataset. This study showed that our proposed method outperforms other registration methods in previous studies with an average mean squared error (MSE) of 85. Moreover, this method can register three 3D MRI-US pair in less than a second, improving the expected outcomes of brain surgery.

scholarly journals Combining Magnetic Resonance Imaging with Systemic Monocyte Evaluation for the Implementation of GBM Management

2021 ◽  
Vol 22 (7) ◽  
pp. 3797
Author(s):  
Carolina Giordano ◽  
Giovanni Sabatino ◽  
Simona Romano ◽  
Giuseppe Maria Della Pepa ◽  
Martina Tufano ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Flow Cytometry ◽  
Magnetic Resonance ◽  
Macrophage Polarization ◽  
Residual Tumor ◽  
Surgical Removal ◽  
Resonance Imaging ◽  
Flow Cytometry Data ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic Modalities

Magnetic resonance imaging (MRI) is the gold standard for glioblastoma (GBM) patient evaluation. Additional non-invasive diagnostic modalities are needed. GBM is heavily infiltrated with tumor-associated macrophages (TAMs) that can be found in peripheral blood. FKBP51s supports alternative-macrophage polarization. Herein, we assessed FKBP51s expression in circulating monocytes from 14 GBM patients. The M2 monocyte phenotype was investigated by qPCR and flow cytometry using antibodies against PD-L1, CD163, FKBP51s, and CD14. MRI assessed morphologic features of the tumors that were aligned to flow cytometry data. PD-L1 expression on circulating monocytes correlated with MRI tumor necrosis score. A wider expansion in circulating CD163/monocytes was measured. These monocytes resulted in a dramatic decrease in patients with an MRI diagnosis of complete but not partial surgical removal of the tumor. Importantly, in patients with residual tumor, most of the peripheral monocytes that in the preoperative stage were CD163/FKBP51s− had turned into CD163/FKBP51s+. After Stupp therapy, CD163/FKBP51s+ monocytes were almost absent in a case of pseudoprogression, while two patients with stable or true disease progression showed sustained levels in such circulating monocytes. Our work provides preliminary but meaningful and novel results that deserve to be confirmed in a larger patient cohort, in support of potential usefulness in GBM monitoring of CD163/FKBP51s/CD14 immunophenotype in adjunct to MRI.

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