308 Risk factors associated with detection of osteomyelitis on magnetic resonance imaging in patients with cellulitis

Background: We decided to investigate whether aneurysm wall enhancement (AWE) on high-resolution vessel wall magnetic resonance imaging (HR VW-MRI) coexists with the conventional risk factors for aneurysm rupture. Methods: We performed HR VW-MRI in 46 patients with 64 unruptured small intracranial aneurysms. Patient demographics and clinical characteristics were recorded. The PHASES score was calculated for each aneurysm. Results: Of the 64 aneurysms, 15 (23.4%) showed wall enhancement on post-contrast HR VW-MRI. Aneurysms with wall enhancement had significantly larger size (p = 0.001), higher dome-to-neck ratio (p = 0.024), and a more irregular shape (p = 0.003) than aneurysms without wall enhancement. The proportion of aneurysms with wall enhancement was significantly higher in older patients (p = 0.011), and those with a history of prior aneurysmal SAH. The mean PHASES score was significantly higher in aneurysms with wall enhancement (p < 0.000). The multivariate logistic regression analysis revealed that aneurysm irregularity and the PHASES score are independently associated with the presence of AWE. Conclusions: Aneurysm wall enhancement on HR VW-MRI coexists with the conventional risk factors for aneurysm rupture.

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Accuracy of Computed Tomography and Magnetic Resonance Imaging for Detection of Pathologic Risk Factors in Patients Diagnosed with Retinoblastoma

Current Eye Research ◽

10.1080/02713683.2021.1901938 ◽

2021 ◽

pp. 1-7

Author(s):

Damrong Wiwatwongwana ◽

Pichaya Kulniwatcharoen ◽

Pongsak Mahanupab ◽

Pannee Visrutaratna ◽

Atchareeya Wiwatwongwana

Keyword(s):

Magnetic Resonance Imaging ◽

Risk Factors ◽

Computed Tomography ◽

Magnetic Resonance ◽

Resonance Imaging

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Magnetic Resonance Imaging and Clinical Factors Associated With Ischemic Stroke in Patients Suspected of Cervical Artery Dissection

Stroke ◽

10.1161/strokeaha.118.021868 ◽

2018 ◽

Vol 49 (10) ◽

pp. 2337-2344 ◽

Cited By ~ 5

Author(s):

J. Scott McNally ◽

Peter J. Hinckley ◽

Akihiko Sakata ◽

Laura B. Eisenmenger ◽

Seong-Eun Kim ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Ischemic Stroke ◽

Magnetic Resonance ◽

Artery Dissection ◽

Cervical Artery Dissection ◽

Resonance Imaging ◽

Clinical Factors ◽

Factors Associated ◽

Cervical Artery

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Magnetic Resonance Imaging Analysis of Rotational Alignment in Patients With Patellar Dislocations

The American Journal of Sports Medicine ◽

10.1177/0363546512464691 ◽

2012 ◽

Vol 41 (1) ◽

pp. 51-57 ◽

Cited By ~ 65

Author(s):

Gerd Diederichs ◽

Torsten Köhlitz ◽

Evgenios Kornaropoulos ◽

Markus O. Heller ◽

Bernd Vollnberg ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Risk Factors ◽

Magnetic Resonance ◽

Patellar Dislocation ◽

Patellofemoral Instability ◽

Resonance Imaging ◽

Tibial Torsion ◽

Limb Alignment ◽

Femoral Antetorsion ◽

Rotational Limb Alignment

Background: The role of anatomic risk factors in patellofemoral instability is not yet fully understood, as they have been observed in patients either alone or in combination and in different degrees of severity. Purpose: To prospectively analyze rotational limb alignment in patients with patellofemoral instability and in controls using magnetic resonance imaging (MRI). Study Design: Cross-sectional study; Level of evidence, 3. Methods: Thirty patients (mean age, 22.9 y; range, 12-41 y) with a history of patellar dislocation and 30 age- and sex-matched controls (mean age, 25.2 y; range, 16-37 y) were investigated. The patients underwent MRI of the leg at 1.5 T using a peripheral angiography coil and a T2-weighted half-Fourier acquisition single-shot turbo spin echo (HASTE) sequence for measuring femoral antetorsion, tibial torsion, knee rotation, and mechanical axis deviation (MAD). The mean values of these parameters were compared between patients and controls. In addition, the patients underwent an assessment to determine the influence of rotational limb alignment on lateral trochlear inclination, trochlear facet asymmetry, trochlear depth, Insall-Salvati index, and tibial tuberosity–trochlear groove distance. Results: Patients had 1.56-fold higher mean femoral antetorsion (20.3° ± 10.4° vs 13.0° ± 8.4°; P < .01) and 1.6-fold higher knee rotation (9.4° ± 5.0° vs 5.7° ± 4.3°; P < .01) compared with controls. Moreover, patients had 2.9 times higher MAD (0.81 ± 0.75 mm vs −0.28 ± 0.87 mm; P < .01). Differences in tibial torsion were not significant. Also, there were no significant correlations between parameters of rotational alignment and standard anatomic risk factors. Conclusion: Our results suggest that some patients with nontraumatic patellar instability have greater internal femoral rotation, greater knee rotation, and a tendency for genu valgum compared with healthy controls. Rotational malalignment may be a primary risk factor in patellar dislocation that has so far been underestimated.

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