Human Birth Imaging Using MRI: Prospective cohort study (Preprint)

2021 ◽  
Author(s):  
Olivier Ami ◽  
Jean Christophe Maran ◽  
Dominique Musset ◽  
Claude Dubray ◽  
Gérard Mage ◽  
...  
Keyword(s):  
Soft Tissues ◽  
Neurological Impairment ◽  
Invasive Technique ◽  
Resonance Imaging ◽  
Effective Utilization ◽  
Medical Risk ◽  
Non Invasive ◽  
Bony Pelvis ◽  
Magnetic Resonance Imaging Mri ◽  
Human Birth

UNSTRUCTURED Childbirth is a physiologic process with significant medical risk, as neurological impairment due to the birthing process can occur at any time. Improvements in risk assessment and anticipatory interventions are constantly needed; however, the birthing process is difficult to assess using simple imaging technology since the maternal bony pelvis and fetal skeleton interfere with visualizing the soft tissues. Magnetic resonance imaging (MRI) is a non-invasive technique with no ionizing radiation that can monitor the biomechanics of the birthing process. Effective utilization of this modality, however, requires teamwork and implementation of the appropriate safeguards to achieve appropriate safety levels. This article describes a clinically effective and safe method to perform real-time MRI during the birthing process. We report the experience of our team as part of the IMAGINAITRE research protocol (France), which aimed better understand of the biomechanics of childbirth. 

scholarly journals Non-invasive diagnostics in fossils - Magnetic Resonance Imaging of pathological belemnites

2005 ◽  
Vol 2 (2) ◽  
pp. 133-140 ◽  
Author(s):  
D. Mietchen ◽  
H. Keupp ◽  
B. Manz ◽  
F. Volke
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Clinical Diagnostics ◽  
Resonance Imaging ◽  
Non Invasive ◽  
Physiological Processes ◽  
Magnetic Resonance Imaging Mri ◽  
Invasive Diagnostics

Abstract. For more than a decade, Magnetic Resonance Imaging (MRI) has been routinely employed in clinical diagnostics because it allows non-invasive studies of anatomical structures and physiological processes in vivo and to differentiate between healthy and pathological states, particularly of soft tissue. Here, we demonstrate that MRI can likewise be applied to fossilized biological samples and help in elucidating paleopathological and paleoecological questions: Five anomalous guards of Jurassic and Cretaceous belemnites are presented along with putative paleopathological diagnoses directly derived from 3D MR images with microscopic resolution. Syn vivo deformities of both the mineralized internal rostrum and the surrounding former soft tissue can be traced back in part to traumatic events of predator-prey-interactions, and partly to parasitism. Besides, evidence is presented that the frequently observed anomalous apical collar might be indicative of an inflammatory disease. These findings highlight the potential of Magnetic Resonance techniques for further paleontological applications.

Magnetic Resonance Imaging in the Diagnosis of Disruption of the Posterior Tibial Tendon

Foot & Ankle ◽  
1987 ◽  
Vol 8 (3) ◽  
pp. 144-147 ◽  
Author(s):  
Ian J. Alexander ◽  
Kenneth A. Johnson ◽  
Thomas H. Berquist
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissues ◽  
Diagnostic Technique ◽  
Clinical Findings ◽  
The Body ◽  
Posterior Tibial Tendon ◽  
Resonance Imaging ◽  
Posterior Tibial ◽  
Magnetic Resonance Imaging Mri

Magnetic resonance imaging (MRI), a useful technique of studying soft tissues of the body, can be very effective in assessing the integrity of tendons. Usually a patient with a complete tear of the posterior tibial tendon has characteristic physical findings. In the patient presented, MRI demonstrated a complete disruption of the posterior tibial tendon, despite the absence of the commonly associated clinical findings. In view of the difficulties encountered with attempted tenography of the completely torn posterior tibial tendon, MRI provides a sensitive alternative diagnostic technique.

scholarly journals VIRTOPSY IN THE CZECH REPUBLIC

2020 ◽  
Vol 6 (2) ◽  
pp. 44-48
Author(s):  
J. Frishons ◽  
V. Novotny ◽  
P. Rejtar ◽  
P. Hejna ◽  
M. A. Kislov ◽  
...  
Keyword(s):  
Czech Republic ◽  
Soft Tissues ◽  
Road Traffic ◽  
Image Data ◽  
Ct Scanning ◽  
Resonance Imaging ◽  
The Czech Republic ◽  
Aviation Accidents ◽  
Conventional Autopsy ◽  
Magnetic Resonance Imaging Mri

Postmortem computer tomography (CT) came into practice of forensic medicine in the 1990s and has later been complemented with magnetic resonance imaging (MRI). A pioneer virtual autopsy was conducted in Germany in 1983. In the Czech Republic, this examination was first performed in 1993.A typical examination requires about 30 min, with the most resource-demanding stage being the image data rendering. CT was shown to better capture skeletal structures, while MRI contrasting is superior in terms of visualising soft tissues. In the Czech Republic, CT-based virtopsy is legislated mandatory to document deaths inflicted by gunshots, road traffic and aviation accidents, high falls, occupational and explosive-related injuries, thermal and mechanical traumas, strangulation, drowning as well as to examine unidentified or decomposing bodies, deceased children and adolescents aged under 18.CT scanning prior to conventional autopsy provides a forensic expert with guidance to reveal pathologies non-invasively in particular regions that are difficult to dissect or access. The advantage of virtopsy is the objective acquisition of data that can be re-examined, reinterpreted or juxtaposed with the results of conventional autopsy and easily recovered for possible further expertise. 

scholarly journals Sensitivity of Magnetic Resonance Imaging in the Detection of Colorectal Liver Metastases

2008 ◽  
Vol 90 (1) ◽  
pp. 25-28 ◽  
Author(s):  
S Blyth ◽  
A Blakeborough ◽  
M Peterson ◽  
IC Cameron ◽  
AW Majeed
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Liver Metastases ◽  
Colorectal Liver Metastases ◽  
Imaging Modality ◽  
Invasive Technique ◽  
Resonance Imaging ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
High Degree

INTRODUCTION The aim of this study was to evaluate the sensitivity of magnetic resonance imaging (MRI) in the detection of colorectal liver metastases. PATIENTS AND METHODS Pre-operative MRI scanning of the liver was performed by a single radiologist and the size and number of definite liver metastases were recorded. Patients then underwent hepatectomy with routine intra-operative ultrasonography (IOUS) and resected specimens were sent for histopathology. Pathology findings were compared with those of MRI scans to determine the sensitivity of this imaging modality. Exclusions were patients undergoing hepatic resection more than 4 weeks after the MRI scan, those undergoing chemotherapy at the time of the scan, and those with conglomerate unilobar metastases. RESULTS Complete data were available for 84 patients. There was total agreement between MRI, IOUS and histology in 79 patients (101 metastases). MRI missed 5 metastases in 5 patients that were found on IOUS (or palpation of superficial lesions) and subsequently confirmed by histological examination. These measured 5 mm or less (4 patients) and 7 mm (one patient). The sensitivity of MRI in the detection of colorectal liver metastases was thus 94% for all lesions and 100% for lesions 1 cm or larger in diameter. CONCLUSIONS MRI of the liver is a non-invasive technique with an extremely high degree of sensitivity in the detection of colorectal liver metastases and should be considered as the ‘gold standard’ in the pre-operative imaging of these patients.

Endometriosis of the sciatic nerve with cyclic sciatica

2014 ◽  
Vol 21 (3) ◽  
pp. 99-102 ◽  
Author(s):  
Ozdil Baskan ◽  
Ferda Ozdemir
Keyword(s):  
Magnetic Resonance Imaging ◽  
Sciatic Nerve ◽  
Soft Tissues ◽  
Uterine Cavity ◽  
Common Disease ◽  
Resonance Imaging ◽  
Irreversible Damage ◽  
Rare Manifestation ◽  
Magnetic Resonance Imaging Mri ◽  
Gynecological Disorder

Endometriosis is an important gynecological disorder which is characterized by proliferation of the functional endometrial tissue outside the uterine cavity, affects most commonly the ovaries and less frequently the gastrointestinal tract, chest, urinary tract, and soft tissues. Endometriosis invading the sciatic nerve is a rare manifestation of a common disease. The cyclic rhythm of pain, associated with the magnetic resonance imaging (MRI) signal of the lesion should suggest a diagnosis of endometriosis. Early diagnosis and treatment are important to prevent irreversible damage to the sciatic nerve.

Neuroimaging Techniques and Their Application in the Spinal Cord

2016 ◽  
Vol 2 (4) ◽  
pp. 211-214
Author(s):  
Yong Hu
Keyword(s):  
Spinal Cord ◽  
Neural Function ◽  
Functional Information ◽  
Resonance Imaging ◽  
Spinal Disorders ◽  
Human Spinal Cord ◽  
Non Invasive ◽  
Conventional Mri ◽  
Magnetic Resonance Imaging Mri ◽  
Neuroimaging Techniques

Non-invasive neuroimaging plays a crucial role in the assessment of the human spinal cord, but it is quite challenging. Magnetic resonance imaging (MRI) is an important modality to obtain both high-resolution anatomical and functional information concerning the spinal cord. Besides conventional MRI, advanced MRI techniques could provide novel information about the microstructure and neural function of the spinal cord, thereby enhancing the understanding of spinal cord neurology and pathology of various spinal disorders.

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