MRI of pneumonia in immunocompromised patients: comparison with CT

Ekinci, Afra; Uçarkuş, Tuba Yücel; Okur, Aylin; Öztürk, Mehmet Akif; Doğan, Serap

doi:10.5152/dir.2016.16055

Cited by 32 publications

(44 citation statements)

References 17 publications

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“…This difference can also be attributed to the different thickness of the section used for CT (0.1 cm) and MR imaging (0.5-0.6 cm). This result is in concordance to the previous studies published by Eibel et al and Ekinci et al [15,22]. Most of the previous studies acquired CT images at a 10 mm increment.…”

Section: Discussionsupporting

confidence: 93%

“…The result for the detection of consolidation and consolidation with a breakdown on MRI was similar to the other previous studies with a sensitivity of 100% [20][21][22].…”

Section: Discussionsupporting

confidence: 88%

“…Recent developments in MRI techniques have allowed imaging of lung tissue with better image quality [14][15][16]. There are studies on lung MRI that have used HASTE and volumetric interpolated breath-hold examination (VIBE) MR sequences [15,[17][18][19][20][21][22]. Other studies have used other MRI sequences like SPAIR, short tau inversion recovery (STIR), and T1-weighted fast field echo (T1-FFE) [23].…”

Section: Introductionmentioning

confidence: 99%

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Diagnostic accuracy of magnetic resonance imaging in the evaluation of pulmonary infections in immunocompromised patients

Singh¹,

Garg²,

Sodhi³

et al. 2020

Pol J Radiol

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Purpose: To evaluate the accuracy of magnetic resonance imaging (MRI) for diagnosing pulmonary infections in immunocompromised adults. Material and methods: Computed tomography (CT) and MRI chest were performed in 35 immuno-compromised patients suspected of pulmonary infection. The MRI sequences that were performed included axial and coronal T2 half-Fourier acquisition single-shot turbo spin-echo (HASTE), spectrally attenuated inversion recovery (SPAIR), true fast imaging with steady-state free precession (TRUFI), and three-dimensional fast low angle shot (3D FLASH) using breath-hold and respiratory triggered BLADE (proprietary name for periodically rotated overlapping parallel lines with enhanced reconstruction). The presence of nodules, consolidations, and ground-glass opacities was evaluated. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated for MRI using CT scan as a reference standard. Results: The sensitivity of MRI in nodule detection was 50% overall and 75% for nodules measuring more than 5 mm. Consolidation was detected with 100% sensitivity. Sensitivity and PPV for the detection of ground-glass opacities (GGOs) were 77.7% and 53.8%, respectively. T2 HASTE axial had the fewest image artefacts. Respiratory triggered MR pulse sequence did not add any significant diagnostic information as compared to the non-respiratory triggered MR pulse sequences. Conclusions: Sensitivity for detecting small nodules and GGOs on MR is poor; CT scan remains the imaging modality of choice for the evaluation of pulmonary infections in immunocompromised patients. However, MRI can be used in the follow-up imaging of these patients.

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Section: Discussionsupporting

confidence: 93%

“…The result for the detection of consolidation and consolidation with a breakdown on MRI was similar to the other previous studies with a sensitivity of 100% [20][21][22].…”

Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Diagnostic accuracy of magnetic resonance imaging in the evaluation of pulmonary infections in immunocompromised patients

Singh¹,

Garg²,

Sodhi³

et al. 2020

Pol J Radiol

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“…A. Ekinci et al came to similar conclusions: all MRI sequences had almost perfect agreement with CT for the detection of consolidation and patchy increased density. They believe that MRI can be used, particularly in cases where dynamic monitoring of patients is required to decrease to avoid ionizing radiation exposure [15].…”

Section: Discussionmentioning

confidence: 99%

Chest MRI of patients with COVID-19: a retrospective case study

Сергунова

Bazhin

Masri³

et al. 2020

Preprint

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During the pandemic of COVID-19, computed tomography showed its effectiveness in diagnosis of coronavirus infection. However, ionizing radiation during CT studies causes concern for patients who require dynamic observation, as well as for examination of children and young people. For this retrospective study, we included 15 suspected for COVID-19 patients who were hospitalized in April 2020, Russia. There were 4 adults with positive polymerase chain reaction (PCR) test for COVID-19. All patients underwent MRI examinations using MR-LUND PROTOCOL: Single-shot Fast Spin Echo (SSFSE), LAVA 3D and IDEAL 3D, EPI diffusion-weighted imaging (DWI) and Fast Spin Echo (FSE) T2WI without using respiratory or any other trigger. 3 patients also had CT scan performed. In 5 (33,3%) patients, detected lesioins were visualized on T2WI and DWI simultaneously. At the same time, 4 (26.7%) patients revealed lung tissue changes only on T2WI (P(McNemar)= 0,125, OR= 0,00 (95%), kappa=0,500). Pulmonary changes on MRI were also analyzed depending on their localization. In those patients who had CT scan, the changes were comparable to MRI. MRI of the lungs can detect features of viral pneumonia and assess severity of lung damage. The method can be used to diagnose COVID-19. These data may be applicable for interpreting other studies, such as thoracic spine MRI, detecting signs of viral pneumonia of asymptomatic patients. The current study was limited by a small sample size and absence of chest CT scans of all patients.

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“…Thus, the quality of lung imaging and the sensitivity of lesion detection are increased even without the patient holding their breath. Although this technique has been demonstrated in the evaluation of several lung diseases (Attenberger et al, 2014;Chung et al, 2013Chung et al, , 2016Dewes et al, 2016;Ekinci et al, 2017;Liszewski et al, 2017;Nagel et al, 2016;Ozcan et al, 2017;Puderbach et al, 2007), its application in the evaluation of pulmonary TB by MRI has not been explored.…”

Section: Introductionmentioning

confidence: 99%

MRI evaluation of pulmonary lesions and lung tissue changes induced by tuberculosis

Jianbing

Liu

Shen

et al. 2019

International Journal of Infectious Diseases

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Objective: To evaluate the utility of magnetic resonance imaging (MRI) with an advanced motion correction technique in characterizing lung tissue changes and lesions induced by pulmonary tuberculosis (TB). Methods: Sixty-three subjects with computed tomography (CT) features of pulmonary TB underwent lung MRI. All subjects with pulmonary TB were confirmed by acid-fast bacillus (AFB) testing or the detection of Mycobacterium tuberculosis. T2-weighted turbo spin echo (TSE) sequence MRI with the MultiVane motion correction technique was used to image the lungs. Routine lung CT images were obtained as reference. MRI and CT images were reviewed by multiple readers independently. The performance of MRI in depicting abnormalities induced by pulmonary TB and their morphological changes were evaluated and compared with the performance of CT. Results: Lung MRI found pulmonary abnormalities in all 63 TB subjects, with satisfactory quality. With the implementation of MultiVane for T2-weighted TSE sequences to reduce the motion correction effect, MRI showed excellent agreement with CT in detecting abnormal imaging features of pulmonary TB (k = 0.88, p < 0.001), such as tree-in-bud sign, ground-glass opacity, consolidation, mass, and cavitation. MRI was advantageous in identifying caseation and liquefactive necrosis based on inhomogeneous signal distribution within consolidations and also in identifying mild pleural effusion. The optimized lung MRI was comparable to CT in detecting non-calcified nodules (k = 0.90), with overall sensitivity of 50.0%, 91.1%, and 100% for nodules of size <5 mm, 5-10 mm, and >10 mm, respectively. However, MRI was less effective in identifying lesions with calcification. Conclusions: The clinical implementation of an optimized MRI protocol with the MultiVane motion correction technique for imaging pulmonary TB is feasible. Lung MRI without ionizing radiation is a promising alternative to the clinical standard CT, especially for pregnant women, children, adolescents, and patients requiring short-term and repeated follow-up observations.

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MRI of pneumonia in immunocompromised patients: comparison with CT

Cited by 32 publications

References 17 publications

Diagnostic accuracy of magnetic resonance imaging in the evaluation of pulmonary infections in immunocompromised patients

Diagnostic accuracy of magnetic resonance imaging in the evaluation of pulmonary infections in immunocompromised patients

Chest MRI of patients with COVID-19: a retrospective case study

MRI evaluation of pulmonary lesions and lung tissue changes induced by tuberculosis

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