scholarly journals Thickening of spine ligamentum flavum and facet tropism

2014 ◽  
Vol 13 (1) ◽  
pp. 39-42 ◽  
Author(s):  
Paulo Roberto Appolonio ◽  
Thiago Mattar ◽  
Alexandre Barros Costa ◽  
Edgar Santiago Valesin Filho ◽  
Luciano Miller Reis Rodrigues
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Surgery ◽  
Positive Relationship ◽  
Ligamentum Flavum ◽  
Chronic Back Pain ◽  
Resonance Imaging ◽  
Significant Difference ◽  
Magnetic Resonance Imaging Mri ◽  
Facet Tropism ◽  
Different Levels

OBJECTIVE: This study investigated the thickening of the ligamentum flavum (LF) and its correlation with facet tropism and its severity at different levels of the spine. METHOD: This retrospective study was performed with patients with chronic back pain consecutively admitted to a specialized spinal surgery service between January 2012 and January 2013. All patients underwent magnetic resonance imaging (MRI) to measure the thickness of the LF and facet tropism severity (severe, moderate or absent) according to the spine levels (L3 -L4, L4-L5, L5-S1). The association between the thickness of LF and facet tropism was analyzed. RESULTS: During the study period, 98 consecutive patients were enrolled with a mean age of 53.6 years, most women (59.2%). There was no significant difference between the thicknesses of the ligament and the presence of tropism in different spinal levels (p > 0.05). The thickness of LF was significantly associated with the severity of tropism only in L5-S1 level (p < 0.03). CONCLUSIONS: Our results show that there is a positive relationship between severe facet tropism and increased thickness of the LF in the L5-S1 level.

scholarly journals Dorsal Spinal Ligamentum Flavum Thickening: A Magnetic Resonance Imaging Study

2018 ◽  
Vol 12 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Amarnath Chelladurai ◽  
Suhasini Balasubramaniam ◽  
Sarenya Preyah Anbazhagan ◽  
Sathyan Gnanasihamani ◽  
Sukumar Ramaswami
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Ligamentum Flavum ◽  
Imaging Study ◽  
Mean Value ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Compressive Myelopathy ◽  
Relationship Of ◽  
Dorsal Spinal

<sec><title>Study Design</title><p>A retrospective radiological study of the ligamentum flavum (LF).</p></sec><sec><title>Purpose</title><p>We determined the relationship of dorsal spinal LF thickening with age and sex using magnetic resonance imaging (MRI). We also determined whether LF thickening has a predominant tendency to occur at a specific dorsal level and on a specific side.</p></sec><sec><title>Overview of Literature</title><p>Many researchers have studied LF thickness at dorsal levels in patients with compressive myelopathy. However, there is a dearth of literature pertaining to the study of dorsal LF thickness in patients without myelopathy.</p></sec><sec><title>Methods</title><p>LF thickness was measured at dorsal levels from T1 to T12 on both sides using MRI in 100 individuals. The patients were divided into three groups based on age: 20 to 40, 41 to 60, and &gt;60 years. On axial T2-weighted imaging at the mid-disc level, LF thickness was measured perpendicular to the lamina border, either at half the length of LF or at maximum thickness, whichever was greater.</p></sec><sec><title>Results</title><p>We found that LF thickness does not increase significantly with increasing age and there was no significant disparity in LF thickness between the sides and sexes. We also found that there was a significant increase in LF thickness at the T10–T11 level (mean value, 3.27±0.94 mm).</p></sec><sec><title>Conclusions</title><p>LF thickness does not appear to have any side/sex dominance. LF thickening has a predominant tendency to occur specifically at the T10–T11 level. This may be due to maximum tensile strength and mobility at this level. Because there is an increased tendency for LF thickening at the T10–T11 level, this may be used as a reference point for counting the vertebral levels.</p></sec>

Brain magnetic resonance imaging does not contribute to the diagnosis of chronic neuroborreliosis

2007 ◽  
Vol 48 (7) ◽  
pp. 755-762 ◽  
Author(s):  
A. Aalto ◽  
J. Sjöwall ◽  
L. Davidsson ◽  
P. Forsberg ◽  
Ö. Smedby
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Disease Duration ◽  
Brain Magnetic Resonance Imaging ◽  
White Matter Lesions ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Significant Difference ◽  
Fluid Attenuated Inversion Recovery ◽  
Magnetic Resonance Imaging Mri

Background: Borrelia infections, especially chronic neuroborreliosis (NB), may cause considerable diagnostic problems. This diagnosis is based on symptoms and findings in the cerebrospinal fluid but is not always conclusive. Purpose: To evaluate brain magnetic resonance imaging (MRI) in chronic NB, to compare the findings with healthy controls, and to correlate MRI findings with disease duration. Material and Methods: Sixteen well-characterized patients with chronic NB and 16 matched controls were examined in a 1.5T scanner with a standard head coil. T1- (with and without gadolinium), T2-, and diffusion-weighted imaging plus fluid-attenuated inversion recovery (FLAIR) imaging were used. Results: White matter lesions and lesions in the basal ganglia were seen in 12 patients and 10 controls (no significant difference). Subependymal lesions were detected in patients down to the age of 25 and in the controls down to the age of 43. The number of lesions was correlated to age both in patients (ρ = 0.83, P<0.01) and in controls (ρ = 0.61, P<0.05), but not to the duration of disease. Most lesions were detected with FLAIR, but many also with T2-weighted imaging. Conclusion: A number of MRI findings were detected in patients with chronic NB, although the findings were unspecific when compared with matched controls and did not correlate with disease duration. However, subependymal lesions may constitute a potential finding in chronic NB.

scholarly journals The contribution of susceptibility-weighted imaging (SWI) in the central nervous system superficial siderosis’ evaluation in 3 Tesla magnetic resonance imaging (MRI)

2021 ◽  
Vol 20 (3) ◽  
pp. 324-329
Author(s):  
Bünyamin Güney ◽  
◽  
İbrahim Önder Yeniçeri ◽  
Emrah Doğan ◽  
Neşat Çullu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Vascular Malformation ◽  
3 Tesla ◽  
Superficial Siderosis ◽  
Susceptibility Weighted Imaging ◽  
Amyloid Angiopathy ◽  
Resonance Imaging ◽  
Significant Difference ◽  
Magnetic Resonance Imaging Mri

Objective. The aim of this study is to evaluate the magnetic resonance imaging (MRI) findings of central neural system (CNS) superficial siderosis cases and the diagnostic contribution of the susceptibility-weighted imaging (SWI) sequence to conventional imaging. Method. TSE T2-weighted and SWI-MRI of 26 patients diagnosed as CNS-superficial siderosis (CNS-SS) were retrospectively evaluated with 3-Tesla MRI. The localization and type of involvement of SS were reviewed. Results. The CNS-SS were divided into two categories as central amyloid angiopathy-SS (CAA-SS) and non central amyloid angiopathy-SS (non-CAA-SS). In non-CAA cases, the involvement was typical (classic) in 5 cases and atypical in 9 cases. In 12 of these cases (85.7%), SS findings were observed on both turbo spine echo (TSE) T2 images and SWI imaging, while in 2 cases (14.3%) SS was detected only on SWI images. In 7 of the CAA-SS cases, involvement was focal type SS (58.33%), while 5 cases had diffuse type SS (41.67%) involvement. In the vast majority of cases (n = 10) of this type of SS, involvement was detected only in SWI images, while siderosis was not detected in TSE T2 images. In addition, occult cerebral vascular malformation accompanying SS, which can be observed only in the SWI sequence, was found in a total of 4 cases. In the cross-matching statistical analysis performed between CAA-SS and non-CAA-SS groups and subgroups, SWI was found to be significantly superior to T2 in detecting SS in the CAA-SS group (p:0,007). Conclusions. SWI imaging was superior in detecting SS and detecting cerebral occult vascular malformation in CAA-SS cases. Although the detectability of SS by SWI was high in other groups, no statistically significant difference was found. Under these circumstances, we think that it will be beneficial to add SWI imaging to the routine imaging protocol in cases with suspected CNS-SS.

scholarly journals Diagnostic performance of mammography and magnetic resonance imaging for evaluating mammographically visible breast masses

2021 ◽  
Vol 49 (9) ◽  
pp. 030006052097309
Author(s):  
Xueli Zhu ◽  
Yi Cao ◽  
Ruidie Li ◽  
Mingxia Zhu ◽  
Xin Chen
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Breast Mri ◽  
Resonance Imaging ◽  
Predictive Values ◽  
Breast Masses ◽  
Significant Difference ◽  
Diagnostic Values ◽  
Magnetic Resonance Imaging Mri

Objective We compared the diagnostic values of mammography and magnetic resonance imaging (MRI) for evaluating breast masses. Methods We retrospectively analyzed mammography, MRI, and histopathological data for 377 patients with breast masses on mammography, including 73 benign and 304 malignant masses. Results The sensitivities and negative predictive values (NPVs) were significantly higher for MRI compared with mammography for detecting breast cancer (98.4% vs. 89.8% and 87.8% vs. 46.6%, respectively). The specificity and positive predictive values (PPV) were similar for both techniques. Compared with mammography alone, mammography plus MRI improved the specificity (67.1% vs. 37.0%) and PPV (91.8% vs. 85.6%), but there was no significant difference in sensitivity or NPV. Compared with MRI alone, the combination significantly improved the specificity (67.1% vs. 49.3%), but the sensitivity (88.5% vs. 98.4%) and NPV (58.3% vs. 87.8%) were reduced, and the PPV was similar in both groups. There was no significant difference between mammography and MRI in terms of sensitivity or specificity among 81 patients with breast masses with calcification. Conclusion Breast MRI improved the sensitivity and NPV for breast cancer detection. Combining MRI and mammography improved the specificity and PPV, but MRI offered no advantage in patients with breast masses with calcification.

scholarly journals Profil Magnetic Resonance Imaging Lumbosakral pada Penderita dengan Nyeri Punggung Bawah di Bagian/Instalasi Radiologi FK Unsrat/RSUP Prof. Dr. R. D Kandou Manado Periode April - Oktober 2019

e-CliniC ◽  
2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Ryan D. Wilyo ◽  
Alfa G. E. Y. Rondo ◽  
Vonny N. Tubagus
Keyword(s):  
Magnetic Resonance Imaging ◽  
Low Back Pain ◽  
Magnetic Resonance ◽  
Ligamentum Flavum ◽  
Spinal Canal Stenosis ◽  
Low Back ◽  
Resonance Imaging ◽  
Canal Stenosis ◽  
Mri Diagnosis ◽  
Magnetic Resonance Imaging Mri

Abstract: Low back pain (LBP) is still a common health problem. Magnetic resonance imaging (MRI) examination is the best radiological modality if pain originated from soft tissue is suspected. This study was aimed to determine the profile of MRI in patients with LBP. Tjis was a retrospective and descriptive study. Data were obtained from the PACS computer in the Radiology Department. The results obtained 112 patients with MRI examination. Most patients were female as many as 59 patients (51.75%), and the most frequent age group was > 50 years as many as 69 patients (60.53%). The most common MRI diagnosis was disc herniation of bulging type in 86 patients (76.78%) especially in L4-L5 and L5-S1, followed by spinal canal stenosis in 49 patients (43.75%), ligamentum flavum hypertrophy in 44 patients (39.28%), and nerve root compression in 40 patients (35.71%). In conclusion, the most common profile of MRI diagnosis among patients with LBP was disc herniation of bulging type located in L4-L5 and L5-S1, followed by spinal canal stenosis, ligamentum flavum hypertrophy, dan nerve root compression.Keywords: low back pain, magnetic resonance imaging Abstrak: Nyeri punggung bawah (NPB) masih merupakan masalah kesehatan yang sering terjadi. Pemeriksaan magnetic resonance imaging (MRI) merupakan modalitas radiologis terbaik bila dicurigai nyeri berasal dari jaringan lunak. Penelitian ini bertujuan untuk mengetahui profil MRI pada penderita dengan NPB. Jenis penelitian ialah deskriptif retrospektif. Data diperoleh melalui komputer PACS di Bagian Radiologi Fakultas Kedokteran Universitas Sam Ratulangi Manado. Hasil penelitian mendapatkan 112 pasien dengan diagnosis MRI, yang terbanyak ialah perempuan berjumlah 59 orang (51,75%). Kelompok usia yang paling sering ialah >50 tahun sebanyak 69 pasien (60,53%). Profil MRI yang paling banyak ditemukan berupa herniasi diskus pada 86 pasien (76,78%) dengan tipe terbanyak ialah bulging, dan lokasi tersering pada L4-L5 dan L5-S1, diikuti oleh stenosis kanalis spinalis 49 pasien (43,75%), hipertrofi ligamentum flavum 44 pasien (39,28%), dan kompresi akar saraf 40 pasien (35,71%). Simpulan penelitian ini ialah profil MRI pada pasien dengan NPB yang terbanyak ialah herniasi diskus dengan tipe bulging pada L4-L5 dan L5-S1, diikuti oleh stenosis kanalis spinalis, hipertrofi ligamentum flavum, dan kompresi akar saraf.Kata kunci: nyeri punggung bawah, magnetic resonance imaging

scholarly journals Evaluating the Endometrial Hyperechoic Zone in Early Postpartum Women May Be Deceptive When Utilizing Transcutaneous Sonography

2018 ◽  
Vol 34 (3) ◽  
pp. 182-188
Author(s):  
Size Wu ◽  
Xian Liang ◽  
Xiaojing Cui ◽  
Dongsheng Zuo ◽  
Lian Hong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Endometrial Thickness ◽  
Uterine Cavity ◽  
Control Group ◽  
Postpartum Women ◽  
Resonance Imaging ◽  
Early Postpartum ◽  
Significant Difference ◽  
Normal Menstrual Cycle ◽  
Magnetic Resonance Imaging Mri

The objective of this study was to investigate the concordance of measurements for early postpartum endometrial thickness between magnetic resonance imaging (MRI) and transcutaneous diagnostic medical sonography (DMS) as well as its implications. The measurements of early postpartum endometrial thickness were reviewed across 51 postpartum women who underwent MRI and transcutaneous DMS. Additionally, 30 women with a normal menstrual cycle formed a control group, and their data were compared. The results indicated that the endometrial thickness at early postpartum was 4.63 ± 0.62 mm on MRI and 8.18 ± 4.70 mm on DMS, with a comparative significant difference ( P < .001). The endometrial thickness of the control group was 10.02 ± 1.71 mm on MRI and 10.17 ± 1.81 mm on DMS with no comparative significant difference ( P = .124). This cohort study questions whether the hyperechoic zone in the early postpartum uterine cavity represents the actual endometrial thickness. Care should be taken by sonographers in labeling the hyperechoic zone in the early postpartum stage as endometrium.

scholarly journals Profil Magnetic Resonance Imaging Lumbosakral pada Penderita dengan Nyeri Punggung Bawah di Bagian/Instalasi Radiologi FK Unsrat/RSUP Prof. Dr. R. D Kandou Manado Periode April - Oktober 2019

e-CliniC ◽  
2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Ryan D. Wilyo ◽  
Alfa G. E. Y. Rondo ◽  
Vonny N. Tubagus
Keyword(s):  
Magnetic Resonance Imaging ◽  
Low Back Pain ◽  
Magnetic Resonance ◽  
Ligamentum Flavum ◽  
Spinal Canal Stenosis ◽  
Low Back ◽  
Resonance Imaging ◽  
Canal Stenosis ◽  
Mri Diagnosis ◽  
Magnetic Resonance Imaging Mri

Abstract: Low back pain (LBP) is still a common health problem. Magnetic resonance imaging (MRI) examination is the best radiological modality if pain originated from soft tissue is suspected. This study was aimed to determine the profile of MRI in patients with LBP. Tjis was a retrospective and descriptive study. Data were obtained from the PACS computer in the Radiology Department. The results obtained 112 patients with MRI examination. Most patients were female as many as 59 patients (51.75%), and the most frequent age group was > 50 years as many as 69 patients (60.53%). The most common MRI diagnosis was disc herniation of bulging type in 86 patients (76.78%) especially in L4-L5 and L5-S1, followed by spinal canal stenosis in 49 patients (43.75%), ligamentum flavum hypertrophy in 44 patients (39.28%), and nerve root compression in 40 patients (35.71%). In conclusion, the most common profile of MRI diagnosis among patients with LBP was disc herniation of bulging type located in L4-L5 and L5-S1, followed by spinal canal stenosis, ligamentum flavum hypertrophy, dan nerve root compression.Keywords: low back pain, magnetic resonance imaging Abstrak: Nyeri punggung bawah (NPB) masih merupakan masalah kesehatan yang sering terjadi. Pemeriksaan magnetic resonance imaging (MRI) merupakan modalitas radiologis terbaik bila dicurigai nyeri berasal dari jaringan lunak. Penelitian ini bertujuan untuk mengetahui profil MRI pada penderita dengan NPB. Jenis penelitian ialah deskriptif retrospektif. Data diperoleh melalui komputer PACS di Bagian Radiologi Fakultas Kedokteran Universitas Sam Ratulangi Manado. Hasil penelitian mendapatkan 112 pasien dengan diagnosis MRI, yang terbanyak ialah perempuan berjumlah 59 orang (51,75%). Kelompok usia yang paling sering ialah >50 tahun sebanyak 69 pasien (60,53%). Profil MRI yang paling banyak ditemukan berupa herniasi diskus pada 86 pasien (76,78%) dengan tipe terbanyak ialah bulging, dan lokasi tersering pada L4-L5 dan L5-S1, diikuti oleh stenosis kanalis spinalis 49 pasien (43,75%), hipertrofi ligamentum flavum 44 pasien (39,28%), dan kompresi akar saraf 40 pasien (35,71%). Simpulan penelitian ini ialah profil MRI pada pasien dengan NPB yang terbanyak ialah herniasi diskus dengan tipe bulging pada L4-L5 dan L5-S1, diikuti oleh stenosis kanalis spinalis, hipertrofi ligamentum flavum, dan kompresi akar saraf.Kata kunci: nyeri punggung bawah, magnetic resonance imaging

scholarly journals AB0007 VALUE OF ULTRASOUND IN ASSESSMENT OF ACTIVE SACROILIITIS IN PATIENTS WITH AXIAL SPONDYLOARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1307.3-1307
Author(s):  
M. Chen ◽  
S. M. Dai
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Axial Spondyloarthritis ◽  
Resonance Imaging ◽  
Predictive Values ◽  
Significant Difference ◽  
The Us ◽  
Active Sacroiliitis ◽  
Magnetic Resonance Imaging Mri ◽  
Research Consortium

Background:The inflammatory of the sacroiliac joints (SIJs) called sacroiliitis, is a characteristic of axial Spondyloarthritis (axSpA). The detection of sacroiliitis is meaningful to prevent irreversible changes. The tool of assessment of sacroiliitis including radiographs, computed tomography (CT) and magnetic resonance imaging (MRI). Ultrasound (US) has also been used in the evaluation of sacroiliitis in recent years.Objectives:We aimed to evaluate the value of US in the assessment of active sacroiliitis in axSpA patients.Methods:Fifty-one patients fulfilling Assessment of SpondyloArthritis International Society (ASAS) 2009 criteria for the classification of axSpA were recruited1. All the patients underwent MRI and US evaluation of bilateral SIJs. MRI was performed using the sequences of T1WI, T2WI and fat suppression T2WI (FS-T2WI). MRI sacroiliitis was defined according to ASAS criteria of active sacroiliitis2. The Spondyloarthritis research Consortium of Canada (SPARCC) scoring was used to evaluate the inflammatory lesions in SIJs3. US were performed by an ultrasonographer with 10 years of experience in musculoskeletal ultrasound, and resistive index (RI) value was recorded. The US sacroiliitis was defined as the presence of more flow signals at SIJ with an RI ≤ 0.75. The HLA-B27, erythrocyte sedimentation rate (ESR) and hypersensitive C-reactive protein (hsCRP) were also evaluated. Consistency rate, sensitivity, specificity, positive predictive values (PPV) and negative predictive values (NPV)for the diagnosis of sacroiliitis by US were calculated, using MRI as the gold standard.Results:Of the 51 patients, 24 were female and 27 were male. The HLA-B27 positive rate was 90.2% (46/51). The consistency rate of US and MRI sacroiliitis was 55.88 (57/102). The sensitivity and specificity of US for the diagnosis of sacroiliitis were 55.93 (33/59) and 55.81 (24/43) respectively. The PPV and NPV were 63.46 (33/52) and 48 (24/50) respectively. There was no significant difference in ESR and hsCRP between the US positive sacroiliitis and the others (P= 0.7477 and 0.2268, respectively). The SPARCC scores have no significant difference between the US positive sacroiliitis and the others (P= 0.2206). The RI was not significantly associated with the MRI SPARCC score (P=0.4236).Conclusion:US may be an optional method for preliminary screening sacroiliitis. But its reliability as a diagnostic method needs further verification.References:[1]Rudwaleit M, et al. The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection. Ann Rheum Dis. 2009; 68(6):777-83[2]Rudwaleit M, et al. Defining active sacroiliitis on magnetic resonance imaging (MRI) for classification of axial spondyloarthritis: a consensual approach by the ASAS/OMERACT MRI group. Ann Rheum Dis 2009;68(10):1520–7[3]Maksymowych WP, et al. Spondyloarthritis research Consortium of Canada magnetic resonance imaging index for assessment of sacroiliac joint inflammation in ankylosing spondylitis. Arthritis Rheum.2005;53(5):703-9.Acknowledgments:This project was supported by grants from National Natural Science Foundation of China (81900795)Disclosure of Interests:None declared

scholarly journals Remote Cerebellar Haemorrhage after Spinal Surgery

2007 ◽  
Vol 34 (4) ◽  
pp. 483-484 ◽  
Author(s):  
Tarkan Calisaneller ◽  
Cem Yilmaz ◽  
Ozkan Ozger ◽  
Hakan Caner ◽  
Nur Altinors
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Surgery ◽  
Resonance Imaging ◽  
Cerebellar Haemorrhage ◽  
Magnetic Resonance Imaging Mri ◽  
Zebra Sign

Remote cerebellar haemorrhage (RCH) is a rare but potentially lethal complication of spinal surgery resulting from inadvertent opening of the dura. The precise mechanism of this type of haemorrhage remains undetermined. Magnetic resonance imaging (MRI) may show a ‘Zebra sign’ representing the horizontal curvilinear configuration of haemorrhage between the cerebellar folia.

Sign in / Sign up

Export Citation Format

Share Document