scholarly journals Imaging Diagnosis in Colorectal Endometriosis

2021 ◽  
Vol 28 (2) ◽  
pp. 215-222
Author(s):  
Marina Rodica ANTONOVICI ◽  
◽  
Oana Maria IONESCU ◽  
Horace ROMAN ◽  
Claudia MEHEDINTU ◽  
...  
Keyword(s):  
Virtual Colonoscopy ◽  
Resonance Imaging ◽  
Imaging Diagnosis ◽  
Non Invasive ◽  
Combined Use ◽  
Preoperative Mapping ◽  
Multiple Imaging ◽  
Imaging Results ◽  
Magnetic Resonance Imaging Mri

Colorectal deep infiltrative endometriosis (DIE) can have a major impact on patient’s health and quality of life. Surgical treatment of colorectal DIE varies depending on the location and characteristics of the lesions, which is why the preoperative non-invasive diagnosis needs to be correct and complete. Multiple imaging methods are currently available, but their usefulness is still being studied, as none of them has proven itself perfect. In the present study we wanted to find out to what extent the combined use of magnetic resonance imaging (MRI), endorectal ultrasound (ERUS) and computed tomography-based virtual colonoscopy (CTC) helps perform the preoperative mapping of lesions. We conducted a retrospective study of prospectively collected data that included 49 patients operated for colorectal DIE. In identifying rectal nodules, MRI as a single diagnostic method was the most useful. When ERUS or CTC was added, the concordance between intraoperative and imaging results was very strong. CTC was the most useful in identifying sigmoid nodules. ERUS evaluates the depth of rectal nodules best. CTC assesses best the stenosis for both rectal and sigmoid nodules. Each method contributed to the completion of the diagnosis, so performing ERUS and CTC in addition to MRI seems to be preferable in patients with colorectal DIE.

scholarly journals Cartilage Micrografts as a Novel Non-Invasive and Non-Arthroscopic Autograft Procedure for Knee Chondropathy: Three-Year Follow-Up Study

2021 ◽  
Vol 10 (2) ◽  
pp. 322
Author(s):  
Marco Marcarelli ◽  
Marcello Zappia ◽  
Lorenzo Rissolio ◽  
Chiara Baroni ◽  
Carlo Astarita ◽  
...  
Keyword(s):  
Oxford Knee Score ◽  
Resonance Imaging ◽  
Non Invasive ◽  
Follow Up Study ◽  
Chondral Defects ◽  
Before And After ◽  
Magnetic Resonance Imaging Mri

(1) Background: Focal chondral defects of the knee can significantly impair patient quality of life. Although different options are available, they are still not conclusive and have several limitations. The aim of this study was to evaluate the role of autologous cartilage micrografts in the treatment of knee chondropathy. (2) Methods: Eight patients affected by knee chondropathy were evaluated before and after 6 months and 3 years following autologous cartilage micrografts by magnetic resonance imaging (MRI) for cartilage measurement and clinical assessment. (3) Results: All patients recovered daily activities, reporting pain reduction without the need for analgesic therapy; Oxford Knee Score (OKS) was 28.4 ± 6 and 40.8 ± 6.2 and visual analogue scale (VAS) was 5.5 ± 1.6 and 1.8 ± 0.7 before and after 6 months following treatment, respectively. Both scores remained stable after 3 years. Lastly, a significant improvement of the cartilage thickness was observed using MRI after 3 years. (4) Conclusions: Autologous cartilage micrografts can promote the formation of new cartilage, and could be a valid approach for the treatment of knee chondropathy.

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.

scholarly journals A study of the sensitivity and specificity of the Magnetic Resonance Imaging (MRI) technique used in the diagnosis of endometriosis versus the intraoperative appearance considered the reference standard in the diagnosis of endometriosis

2021 ◽  
Vol 28 (1) ◽  
pp. 55-61
Author(s):  
Alexandra RADU ◽  
◽  
Elvira BRATILA ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Sensitivity And Specificity ◽  
Reference Standard ◽  
Resonance Imaging ◽  
First Line ◽  
Magnetic Resonance Imaging Mri ◽  
Asymptomatic Women ◽  
Bladder Invasion

Endometriosis is a gynecological pathology with chronic symptoms, which negatively affects the patient’s quality of life. The prevalence of endometriosis in asymptomatic women is between 2% and 50%, depending on the populations studied and the method of diagnosis. The severity of the symptoms as well as the probability of diagnosing endometriosis increases with age9. Because endometriosis is a gynecological condition with a nonspecific clinical picture, sometimes even asymptomatic, imaging technology can be considered the first line of diagnosis for this pathology. The main objective of this study is to evaluate the sensitivity and specificity of nuclear magnetic resonance imaging (MRI) used in the diagnosis of endometriotic lesions depending on their location, and compare the results obtained with the intraoperative appearance considered a reference standard in the diagnosis of endometriosis. Our study revealed the highest specificity for MRI in the case of endometriotic bladder invasion, respectively the highest sensitivity for endometriotic rectal nodules.

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 Pathobiological and Radiological Approach For Hepatocellular Carcinoma Subclassification

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Francesco Vasuri ◽  
Matteo Renzulli ◽  
Silvia Fittipaldi ◽  
Stefano Brocchi ◽  
Alfredo Clemente ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hepatocellular Carcinoma ◽  
Magnetic Resonance ◽  
Histopathological Analysis ◽  
Resonance Imaging ◽  
Imaging Diagnosis ◽  
Mri Features ◽  
Histopathological Evaluation ◽  
Magnetic Resonance Imaging Mri ◽  
Made In

Abstract Many advances have been made in the imaging diagnosis and in the histopathological evaluation of HCC. However, the classic imaging and histopathological features of HCC are still inadequate to define patient’s prognosis. We aimed to find the link between new proposed morphovascular patterns of hepatocellular carcinoma (HCC) and magnetic resonance imaging (MRI) features to identify pre-operatory markers of biologically aggressive HCC. Thirty-nine liver nodules in 22 patients were consecutively identified. Histopathological analysis and immunohistochemistry for CD34 and Nestin were performed to identify the four different HCC morphovascular patterns. MRI was performed using gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid. Three out of four morphovascular HCC patterns showed peculiar MRI features: in particular Pattern D (solid aggressive HCCs with CD34+/Nestin+ new-formed arteries) were isointense on T1-WI in 83% of cases and hyperintense on T2-WI in 50%. Five histologically-diagnosed HCC were diagnosed as non-malignant nodules on MRI due to their early vascularization and low aggressiveness (Pattern A). The comparison between histology and MRI confirms that a subclassification of HCC is possible in a pre-operatory setting. MRI seems to reinforce once more the identity of the different morphovascular HCC patterns and the possibility to pre-operatively identify HCCs with features of biological aggressiveness.

Strength, Size, and Muscle Quality in the Upper Arm following Unilateral Training in Younger and Older Males and Females

2009 ◽  
Vol 2 ◽  
pp. CMAMD.S1180 ◽  
Author(s):  
Leah C. Tanton ◽  
Thomas A. Cappaert ◽  
Paul M. Gordon ◽  
Robert F. Zoeller ◽  
Theodore J. Angelopoulos ◽  
...  
Keyword(s):  
Muscle Quality ◽  
Resonance Imaging ◽  
Age And Gender ◽  
Males And Females ◽  
Older Subjects ◽  
Magnetic Resonance Imaging Mri ◽  
And Gender ◽  
Unilateral Training ◽  
Older Males

Purpose To assess strength, size, and muscle quality differences between younger and older males and females in response to training. Methods The bicep and tricep of the non-dominant arm were trained for twelve weeks in younger and older males and females (n = 41). The bicep of both arms were assessed pre and post for muscle strength using one-repetition maximum (1 RM) testing, and size using magnetic resonance imaging (MRI). Results Strength (p < 0.05), mCSA (p < 0.05), and 1 RM MQ (p < 0.00) increased in response to training in all subjects regardless of age or gender. Younger and older subjects had similar increases in strength (45.49 ± 15.30% vs. 42.67 ± 26.67% respectively), mCSA (16.22 ± 7.98% vs. 19.17 ± 6.19% respectively), and 1RM MQ (25.73 ± 15.76 vs. 19.67 ± 20.66 respectively). Women increased their strength (55.59 ± 19.45% vs. 32.87 ± 15.66% p < 0.00 respectively), size (20.36 ± 6.29% vs. 14.72 ± 7.28% p < 0.02 respectively), and 1 RM MQ (29.74 ± 18.33% vs. 16.30 ± 15.59% p <.02) more than men. In comparing age and gender, younger females increased their strength more than older males (56.42 ± 12.92% vs. 29.17 ± 21.8% p <.02 respectively). Older females also increased their strength more than older males (54.68 ± 25.73 vs. 29.17 ± 21.80% respectively). Younger females increased their 1 RM MQ more than older males (.18 ± .08 kg/cm vs. .06 ± .08 kg/cm p <.02 respectively). Conclusion Strength and mCSA increases similarly in older and younger subjects. However, the overall strength and quality of the muscle seems to improve more in women than in men.

Inter-Observer Variability of Vaginal Wall Segmentation From MRI: A Statistical Shape Analysis Approach

2015 ◽  
Author(s):  
Deanna C. Easley ◽  
Prahlad G. Menon ◽  
Pamela A. Moalli ◽  
Steven D. Abramowitch
Keyword(s):  
Shape Matching ◽  
Pelvic Floor Disorders ◽  
Pelvic Organ ◽  
Vaginal Wall ◽  
Resonance Imaging ◽  
Inter Observer Variability ◽  
Statistical Shape ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri

Pelvic floor disorders such as Pelvic Organ Prolapse (POP) negatively impact the health and quality of life of millions of women worldwide. POP is characterized by the descent of the pelvic organs into the vagina due to compromised connective tissue support, resulting in discomfort and urinary/fecal incontinence. Magnetic Resonance Imaging (MRI) has been used to aid in the quantification of these anatomical changes, however the inter- and intra-observer repeatability necessary to make reliable conclusions about changes in anatomical positioning is questioned using current methods. The aim of this study was to quantify the degree of variability produced from inter-observer manual tracings of the vagina from MRI scans using a statistical shape matching approach.

scholarly journals Incidence of intraspinal abnormalities in congenital scoliosis: a systematic review and meta-analysis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Xudong Wang ◽  
Yangke Yu ◽  
Ningning Yang ◽  
Lei Xia
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Tethered Cord ◽  
Congenital Scoliosis ◽  
Cochrane Library ◽  
Resonance Imaging ◽  
R Software ◽  
Dural Ectasia ◽  
Magnetic Resonance Imaging Mri

Abstract Objective This is the first systematic review and meta-analysis on the overall incidence of intraspinal abnormalities in patients with congenital scoliosis (CS) and potential influencing factors. Methods We searched three large electronic databases (PubMed, EMBASE, and Cochrane Library) for potentially relevant studies. The quality of the included studies was assessed independently by two authors using the Methodological Index for Non-Randomized Studies (MINORS) criteria. Data on the number of CS patients, number of CS patients with intraspinal abnormalities, sex of the patients, and CS types were extracted from the included studies. R software was used to pool and analyze all the extracted data. Results This meta-analysis included 10 articles, and 671 of 1863 CS patients undergoing magnetic resonance imaging (MRI) examinations were identified to have intraspinal abnormalities. The overall incidence of intraspinal abnormalities in the patients with CS was 37% (95% CI, 29–45%). Diastematomyelia was the most common intraspinal abnormality and was detected in 45.60% of the patients with intraspinal abnormalities (306/671). The remaining intraspinal abnormalities included syringomyelia (273/671, 40.69%), tethered cord (190/671, 28.32%), low conus (58/671, 8.64%), intraspinal mass (39/671, 5.81%), Chiari malformation (32/671, 4.77%), fatty filum (27/671, 4.02%), spina bifida (occulta excluded) (17/671, 2.53%), tumor (17/671, 2.53%), cyst (12/671, 1.79%), syringomyelus (4/671, 0.60%), dural ectasia (1/671, 0.15%), and undiagnosed cord MRI hyperintensity (1/671, 0.15%). The patient’s sex and CS type were not factors that affected the incidence of intraspinal abnormalities in CS patients (all P > 0.05). Conclusions This meta-analysis revealed that the overall incidence of intraspinal abnormalities detected by MRI in CS patients was 37%. Diastematomyelia was the most common intraspinal abnormality. The patient’s sex and CS type were not factors that affected the incidence of intraspinal abnormalities in CS patients.

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