Diagnostic Efficacy of T2 Dark Spot, T2 Dark Rim Signs, and T2 Shading on Magnetic Resonance Imaging in Differentiating Endometriomas From Hemorrhagic Cysts

All patients operated upon for Morton's neuroma during 1991 who were examined with both magnetic resonance imaging and ultrasonography were included in this prospective study. The object of the study was to evaluate the diagnostic value of these two modalities. The preoperative diagnosis was purely clinical. Histology confirmed surgical findings. A 0.3 T scanner was used for the magnetic resonnance imaging, and a 7.5 MHz linear transducer was used for the ultrasonography. The study includes ninepatients. Eight neuromas were found at surgery. This indicicates that false negative diagnoses are common. At present we find these modalities of little or no value, but, with improved these modalities of little or no value, but, with improved equipment and experience, they may become valuable.

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Do computed tomography and magnetic resonance imaging add to temporomandibular joint disorder treatment? A systematic review of diagnostic efficacy

Journal of Oral Rehabilitation ◽

10.1111/j.1365-2842.2010.02133.x ◽

2010 ◽

Vol 38 (2) ◽

pp. 120-135 ◽

Cited By ~ 26

Author(s):

R. F. RIBEIRO-ROTTA ◽

K. D. S MARQUES ◽

M. J. PACHECO ◽

C. R. LELES

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Systematic Review ◽

Magnetic Resonance ◽

Temporomandibular Joint ◽

Temporomandibular Joint Disorder ◽

Resonance Imaging ◽

Diagnostic Efficacy ◽

Joint Disorder ◽

Disorder Treatment

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Utility of Magnetic Resonance Imaging Brain Epilepsy Protocol in New-Onset Seizures: How is it Different in Developing Countries?

Journal of Clinical Imaging Science ◽

10.4103/jcis.jcis_38_18 ◽

2018 ◽

Vol 8 ◽

pp. 43 ◽

Cited By ~ 3

Author(s):

Janardhana Ponnatapura ◽

Suresh Vemanna ◽

Sandeep Ballal ◽

Avisha Singla

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Diagnostic Yield ◽

Mesial Temporal Sclerosis ◽

Resonance Imaging ◽

Chi Square ◽

Diagnostic Efficacy ◽

Imaging Tool ◽

Mri Scans ◽

New Onset

Introduction: Magnetic resonance imaging (MRI) is the current imaging tool of choice in the investigation of patients with seizures. The advent of high-resolution MRI with a dedicated seizure protocol has significantly increased the chances of identifying a cause, resulting in a positive clinical impact on the management of these patients. Aims: The aims of this study were to evaluate the diagnostic efficacy of standard MRI, identify whether there is an increase in the diagnostic yield with the addition of dedicated seizure protocol, and compare the diagnostic yields of MRI and electroencephalogram (EEG) individually and in combination. Subjects and Methods: This is a prospective study of 129 consecutive patients who presented with new-onset seizures over an 18-month period. The MRI scans performed on 1.5T were reviewed for their diagnostic yield and their association with abnormal electrical activity on EEG. Chi-square test of significance (P < 0.05) was used to test for the difference in proportion. The correlation between MRI brain and EEG was studied using McNemer test. Results: MRI detected potentially epileptogenic lesions in 59 patients (47%). The frequency of epileptogenic lesions was highest in patients who had focal-onset seizures (81%). The most common lesion type was infection and inflammation (28%), with neurocysticercosis being the most common, followed by mesial temporal sclerosis, ischemia, and tumor. About 37% of epileptogenic lesions were missed by standard protocol, which were detected on a dedicated seizure protocol MRI. The diagnostic yield of EEG was 31%. Abnormal MRI and EEG were concordant in 18% of patients, with EEG being normal in 37% of patients with epileptogenic lesions. Conclusions: MRI detects epileptogenic lesions in almost one half who presented with new-onset seizures and of these, more than third of them were detected using a “dedicated seizure protocol.” While almost 50% with seizures will have a cause identified on MRI, the sensitivity can be substantially improved by utilizing a dedicated seizure protocol.

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