Correction to: Extending the straight leg raise test for improved clinical evaluation of sciatica: validity and diagnostic performance with reference to the magnetic resonance imaging

Background and Purpose: Pediatric nontraumatic intracerebral hemorrhage accounts for half of stroke in children. Early diagnostic of the causative underlying lesion is the first step toward prevention of hemorrhagic recurrence. We aimed to investigate the performance of arterial spin labeling sequence (ASL) in the acute phase etiological workup for the detection of an arteriovenous shunt (AVS: including malformation and fistula), the most frequent cause of pediatric nontraumatic intracerebral hemorrhage. Methods: Children with a pediatric nontraumatic intracerebral hemorrhage between 2011 and 2019 enrolled in a prospective registry were retrospectively included if they had undergone ASL-magnetic resonance imaging before any etiological treatment. ASL sequences were reviewed using cerebral blood flow maps by 2 raters for the presence of an AVS. The diagnostic performance of ASL was compared with admission computed tomography angiography, other magnetic resonance imaging sequences including contrast-enhanced sequences and subsequent digital subtraction angiography. Results: A total of 121 patients with pediatric nontraumatic intracerebral hemorrhage were included (median age, 9.9 [interquartile range, 5.8–13]; male sex 48.8%) of whom 76 (63%) had a final diagnosis of AVS. Using digital subtraction angiography as an intermediate reference, visual ASL inspection had a sensitivity and a specificity of, respectively, 95.9% (95% CI, 88.5%–99.1%) and 79.0% (95% CI, 54.4%–94.0%). ASL had a sensitivity, specificity, and accuracy of 90.2%, 97.2%, and 92.5%, respectively for the detection of the presence of an AVS, with near perfect inter-rater agreement (κ=0.963 [95% CI, 0.912–1.0]). The performance of ASL alone was higher than that of other magnetic resonance imaging sequences, individually or combined, and higher than that of computed tomography angiography. Conclusions: ASL has strong diagnostic performance for the detection of AVS in the initial workup of intracerebral hemorrhage in children. If our findings are confirmed in other settings, ASL may be a helpful diagnostic imaging modality for patients with pediatric nontraumatic intracerebral hemorrhage. REGISTRATION: URL: https://www.clinicaltrials.gov ; Unique identifiers: 3618210420, 2217698.

Download Full-text

Role of magnetic resonance imaging in ankle sprains

Zanco Journal of Medical Sciences ◽

10.15218/zjms.2021.005 ◽

2021 ◽

Vol 25 (1) ◽

pp. 438-445

Author(s):

Nawroz Othman ◽

Salwa AL-Najjar

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Clinical Evaluation ◽

Ankle Sprain ◽

Soft Tissues ◽

Ankle Injuries ◽

Bone Lesions ◽

Ankle Sprains ◽

Resonance Imaging ◽

Imaging Results

Background and objective: Musculoskeletal injuries frequently occur in the ankle in both the athletic and general population. Ankle sprains are among the most frequent types of ankle injuries, which are conventionally diagnosed through clinical examinations. However, magnetic resonance imaging can provide a more precise diagnosis, leading to better injury management and prevention of consequent chronic complications. The present study aimed to examine the significance of magnetic resonance imaging in detecting and assessing changes that occur in ligaments and soft tissues in patients with ankle sprains. Methods: In a prospective study, 50 patients with ankle sprain referred to Rizgary and Erbil Teaching hospitals in Erbil city, Iraqi Kurdistan Region, from March 2018 to April 2019, were included in the study. They underwent clinical evaluation and MRI (GE general electric 1.5 Tesla). Two expert radiologists analyzed the magnetic resonance imaging images, and the results were compared. The collected data were analyzed using SPSS version 23 through descriptive statistics. Results: Most patients (64%) belonged to the age groups of 30-49 years old. Most of them (64%) were males. Most events of ankle sprain (66%) were because of sports and accidents. The clinical evaluation proved 82% of the ankle sprains. Regarding the laterality of the lesions, 60% were spotted in the right ankles and 40% in the left. According to magnetic resonance imaging results, both radiologists diagnosed that the ankle sprains included bone lesions, ligament injury, tendon injury, and effusion. There was an agreement of ≥ 96% between the two radiologists in this regard. The two radiologists were not significantly different in terms of diagnosing the ligament side. As reported by the radiologists based on the magnetic resonance imaging images, the anterior, lateral, and medial tendons were normal in most cases. Conclusion: Magnetic resonance imaging is a vitally important tool that can be utilized reliably and accurately to diagnose and evaluate changes in ligaments and soft tissues in patients with ankle sprains. Keywords: Magnetic resonance imaging (MRI); Ankle sprain; Ligaments; Injuries.

Download Full-text

Diagnostic Performance of Magnetic Resonance Imaging in the Pretreatment Evaluation of Invasive Cervical Carcinoma

Journal of Gynecology and Womens Health ◽

10.19080/jgwh.2016.01.555551 ◽

2016 ◽

Vol 1 (1) ◽

Author(s):

Nazmun Nahar

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Cervical Carcinoma ◽

Diagnostic Performance ◽

Resonance Imaging ◽

Invasive Cervical Carcinoma

Download Full-text

SAT0086 Evaluation of diagnostic performance of magnetic resonance imaging (MRI) and ultrasound (US) toward early rheumatoid arthritis from nagasaki early arthritis cohort

10.1136/annrheumdis-2018-eular.6534 ◽

2018 ◽

Author(s):

A. Takatani ◽

M. Tamai ◽

N. Ohki ◽

Y. Nakashima ◽

Y. Endo ◽

...

Keyword(s):

Rheumatoid Arthritis ◽

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Early Rheumatoid Arthritis ◽

Diagnostic Performance ◽

Early Arthritis ◽

Resonance Imaging ◽

Magnetic Resonance Imaging Mri

Download Full-text

Magnetic Resonance Imaging for Surveillance of Hepatocellular Carcinoma: A Systematic Review and Meta-Analysis

Diagnostics ◽

10.3390/diagnostics11091665 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1665

Author(s):

Dong Hwan Kim ◽

Sang Hyun Choi ◽

Ju Hyun Shim ◽

So Yeon Kim ◽

Seung Soo Lee ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Hepatocellular Carcinoma ◽

Magnetic Resonance ◽

Sensitivity And Specificity ◽

Diagnostic Performance ◽

Early Stage ◽

Meta Analysis ◽

Random Effects Model ◽

Resonance Imaging ◽

Meta Regression

Our meta-analysis aimed to evaluate the diagnostic performance of surveillance magnetic resonance imaging (sMRI) for detecting hepatocellular carcinoma (HCC), and to compare the diagnostic performance of sMRI between different protocols. Original articles about the diagnostic accuracy of sMRI for detecting HCC were found in major databases. The meta-analytic pooled sensitivity and specificity of sMRI for detecting HCC were determined using a bivariate random effects model. The pooled sensitivity and specificity of full MRI and abbreviated MRI protocols were compared using bivariate meta-regression. In the total seven included studies (1830 patients), the pooled sensitivity of sMRI for any-stage HCC and very early-stage HCC were 85% (95% confidence interval, 79–90%; I2 = 0%) and 77% (66–85%; I2 = 32%), respectively. The pooled specificity for any-stage HCC and very early-stage HCC were 94% (90–97%; I2 = 94%) and 94% (88–97%; I2 = 96%), respectively. The pooled sensitivity and specificity of abbreviated MRI protocols were 87% (80–94%) and 94% (90–98%), values that were comparable with those of full MRI protocols (84% [76–91%] and 94% [89–99%]; p = 0.83). In conclusion, sMRI had good sensitivity for detecting HCC, particularly very early-stage HCC. Abbreviated MRI protocols for HCC surveillance had comparable diagnostic performance to full MRI protocols.

Download Full-text

Comparative Study of Digital Breast Tomosynthesis (DBT) with and without Ultrasound versus Breast Magnetic Resonance Imaging (MRI) in Detecting Breast Lesion

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph19020759 ◽

2022 ◽

Vol 19 (2) ◽

pp. 759

Author(s):

Janice Hui Ling Goh ◽

Toh Leong Tan ◽

Suraya Aziz ◽

Iqbal Hussain Rizuana

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Diagnostic Performance ◽

Breast Lesion ◽

Breast Magnetic Resonance Imaging ◽

Digital Breast Tomosynthesis ◽

Resonance Imaging ◽

Breast Tomosynthesis ◽

Breast Magnetic Resonance ◽

Magnetic Resonance Imaging Mri

Digital breast tomosynthesis (DBT) is a fairly recent breast imaging technique invented to overcome the challenges of overlapping breast tissue. Ultrasonography (USG) was used as a complementary tool to DBT for the purpose of this study. Nonetheless, breast magnetic resonance imaging (MRI) remains the most sensitive tool to detect breast lesion. The purpose of this study was to evaluate diagnostic performance of DBT, with and without USG, versus breast MRI in correlation to histopathological examination (HPE). This was a retrospective study in a university hospital over a duration of 24 months. Findings were acquired from a formal report and were correlated with HPE. The sensitivity of DBT with or without USG was lower than MRI. However, the accuracy, specificity and PPV were raised with the aid of USG to equivalent or better than MRI. These three modalities showed statistically significant in correlation with HPE (p < 0.005, chi-squared). Generally, DBT alone has lower sensitivity as compared to MRI. However, it is reassuring that DBT + USG could significantly improve diagnostic performance to that comparable to MRI. In conclusion, results of this study are vital to centers which do not have MRI, as complementary ultrasound can accentuate diagnostic performance of DBT.

Download Full-text