scholarly journals Clinical Value of Cardiovascular Calcifications on Non-Enhanced, Non-ECG-Gated Chest CT

2020 ◽  
Vol 81 (2) ◽  
pp. 324
Author(s):  
Tae Seop Choi ◽  
Hwan Seok Yong ◽  
Cherry Kim ◽  
Young Joo Suh
Keyword(s):  
Chest Ct ◽  
Clinical Value ◽  
Cardiovascular Calcifications

Lung Ultrasound Findings Compared to Chest CT Scan in Patients with COVID-19 Associated Pneumonia: A Pilot Study

2021 ◽  
Author(s):  
Hamidreza Hatamabadi ◽  
Majid Shojaee ◽  
Mohammad Bagheri ◽  
Masoomeh Raoufi
Keyword(s):  
Pilot Study ◽  
Ct Scan ◽  
Sensitivity And Specificity ◽  
Lung Ultrasound ◽  
Demographic Data ◽  
Ground Glass Opacity ◽  
Chest Ct ◽  
Clinical Value ◽  
Ultrasound Evaluation ◽  
Chest Ct Scan

Introduction: Lung US has been reported to be as useful as a chest CT scan and much better than a chest x-ray for the evaluation of pneumonia. Objective: This study aimed to compare the findings of lung ultrasound (US) and chest CT scan of patients with COVID-19-associated pneumonia in the Emergency Department (ED). Methods: This retrospective observational pilot study was carried out on confirmed COVID-19 patients in the isolation corona ward of the Imam Hussein Hospital ED from March 15 to March 22, 2020. After obtaining demographic data, the patients underwent a pulmonary bedside US examination, with the patients in the sitting position, turning their back to the examiner. A 10-point lung US was performed. Each lung was divided into two areas: posterior (three zones) and lateral (two zones). The patients’ lung ultrasound and chest CT scan as the standard imaging were blindly reviewed and recorded. The clinical value of ultrasound was evaluated with different severity of lung involvement according to CT severity score. Results: Nineteen patients (38 zones), including 13 males, were evaluated with a mean age of 62.5±16.8 years. B2 lines and consolidation observed in the US examinations were significantly correlated with ground-glass opacity and consolidation observed in CT scan examinations, respectively (p <0.0001). US sensitivity and specificity of finding B2 lines were 90% and 100%, respectively. Also, the sensitivity and specificity of US in identifying consolidation were 82% and 100%, respectively. In the lungs with moderate and severe lobar involvement, US findings were significantly correlated (p <0.05) with CT scan findings. Conclusions: Ultrasound evaluation is a safe, fast, and rapid technique for the evaluation of patients with moderate to severe COVID-19-associated pneumonia. It is a reproducible procedure and can be implemented by the operator after a short course of training.

scholarly journals The characteristics and clinical value of chest CT images of novel coronavirus pneumonia

2020 ◽  
Vol 75 (5) ◽  
pp. 335-340 ◽  
Author(s):  
X. Zhao ◽  
B. Liu ◽  
Y. Yu ◽  
X. Wang ◽  
Y. Du ◽  
...  
Keyword(s):  
Ct Images ◽  
Chest Ct ◽  
Clinical Value ◽  
Novel Coronavirus

Clinical Value of COVID-19 Chest Radiography and High-Resolution CT Examination

2021 ◽  
Vol 18 ◽  
Author(s):  
Dan Wang ◽  
Yalei Shang ◽  
Yuehua Chen ◽  
Jianguo Xia ◽  
Weizhong Tian ◽  
...  
Keyword(s):  
Intraclass Correlation ◽  
Stage Iv ◽  
Ground Glass Opacity ◽  
Chest Ct ◽  
Disease Stage ◽  
Ground Glass ◽  
Clinical Value ◽  
Ct Findings ◽  
Pulmonary Manifestations ◽  
The Common

Background: Novel coronavirus disease 2019 (COVID-19) pneumonia remains a matter of concern. Chest CT findings of COVID-19 pneumonia have been reported widely, while there is relatively rare research on chest X-ray (CXR). Objective: The study was aimed to compare the CXR and chest CT findings of patients with confirmed COVID-19 infection and to explore their respective clinical values. Methods: 28 inpatients with COVID-19 pneumonia who underwent both CXR and CT were included. The pulmonary manifestations of the lesions were recorded. Ground-glass opacity (GGO), consolidation, and fibrosis were quantified in CXR and chest CT separately. Consistency was analyzed using Fleiss' kappa and intraclass correlation coefficient. The stages of the disease in CXR and chest CT were evaluated. Results: Approximately 67.9% (19/28) of subjects had abnormal findings on CXR. The common manifestations in CXR were ground-glass opacities (GGO) (100%, 19/19) and consolidation (68.4%, 13/19). 92.9% (26/28) of patients had abnormal manifestations on CT. The common manifestations in CT were GGO (88.5%, 23/26), consolidation (69.2%, 18/26), reticular opacity (69.2%, 18/26) and nodule (46.2%, 12/26). Among the abnormalities between CXR and CT, only consolidation was consistent (κ=0.510). GGO (ICC=0.501) and consolidation (ICC=0.431) scores were consistent in CXR and chest CT. The results of staging were the same in 14 cases, most of them were in stage I and stage II. While in other cases with inconsistent results, CT was more advanced in the disease stage than CXR, mainly stage III and stage IV. Conclusion: CXR is helpful to observe the change of the pulmonary lesions in patients with confirmed COVID-19 pneumonia. CT can be used for early diagnosis and staging of lesions.

CT Imaging Features of Patients Infected with 2019 Novel Coronavirus

2021 ◽  
Author(s):  
Tianhong Yao ◽  
Huirong Lin ◽  
Jingsong Mao ◽  
Shuaidong Huo ◽  
Gang Liu
Keyword(s):  
Ct Imaging ◽  
Chest Ct ◽  
Imaging Features ◽  
Ct Diagnosis ◽  
Clinical Value ◽  
Computed Tomographic ◽  
Coronavirus Infection ◽  
Novel Coronavirus ◽  
Reference Document ◽  
Pulmonary Ct

Novel coronavirus pneumonia is an acute, infectious pneumonia caused by a novel coronavirus infection. Computed tomographic (CT) imaging is one of the main methods to screen and diagnose patients with this disease. Here, the importance and clinical value of chest CT examination in the diagnosis of COVID-19 is expounded, and the pulmonary CT findings of COVID-19 patients in different stages are briefly summarized, thus providing a reference document for the CT diagnosis of COVID-19 patients.

scholarly journals Clinical value of a new generation adaptive statistical iterative reconstruction (ASIR-V) in the diagnosis of pulmonary nodule in low-dose chest CT

2019 ◽  
Vol 92 (1103) ◽  
pp. 20180909 ◽  
Author(s):  
Hui Tang ◽  
Zhentang Liu ◽  
Zhijun Hu ◽  
Taiping He ◽  
Dou Li ◽  
...  
Keyword(s):  
Detection Rate ◽  
Low Dose ◽  
Signal To Noise Ratio ◽  
Standard Dose ◽  
Pulmonary Nodules ◽  
Chest Ct ◽  
Clinical Value ◽  
Ct Dose ◽  
Noise Ratio ◽  
New Generation

Objective: To evaluate the clinical value of low-dose chest CT combined with the new generation adaptive statistical iterative reconstruction (ASIR-V) algorithm in the diagnosis of pulmonary nodule. Methods: 30 patients with pulmonary nodules underwent chest CT using Revolution CT. The patients were first scanned with standard-dose at a noise index (NI) of 14, and the images were reconstructed with filtered back projection (FBP) algorithm. If pulmonary nodules were found, a low-dose targeted scan, with NI of 24, was performed localized on the nodules, and the images were reconstructed with 60% ASIR-V. The detection rate of pulmonary nodules in the two scanning modes was recorded. The size of nodules, CT value and standard deviation of nodules were measured. The signal-to-noise ratio and contrast-to-noise ratio were also calculated. Two experienced radiologists used a 5-point method to score the image quality. The volumetric CT dose index, and dose–length product were recorded and the effective dose (ED) was calculated of the two scanning modes. Results: Volumetric CT dose index (ED) of the standard-dose scan covering the entire lungs was 7.29 ± 2.38 mGy (3.52 ± 1.09 mSv), and that of low-dose targeted scan was 2.56 ± 1.87 mGy (0.51 ± 0.32 mSv). However, the ED of the virtual low-dose scan for the entire lungs was 1.44 ± 0.15 mSv, which would mean a dose reduction of 59.1% compared with the standard-dose scan. 85 of the 87 pulmonary nodules were detected in the low-dose targeted scan, with 2 of the ground-glass density nodules with size less than 1 cm missed, resulting in 97.7% overall detection rate. There was no difference between the low-dose ASIR-V images and standard-dose FBP images for the size (1.49 ± 0.74 cm vs 1.48 ± 0.75 cm), CT value [33.02 ± 1.95 Hounsfield unit (HU) vs 34.6 ± 3.07 HU], standard deviation (27.64 ± 14.42 HU vs 30.38 ± 20.04 HU), signal-to-noise ratio (1.44 ± 0.88 vs 1.43 ± 1.31) and contrast-to-noise ratio (38.95 ± 18.43 vs 38.23 ± 14.99) of nodules (all p > 0.05). There was no difference in the subjective scores between the two scanning modes. Conclusion: The low-dose CT scan combined with ASIR-V algorithm is of comparable value in the detection and the display of pulmonary nodules when compared with the FBP images obtained by standard-dose scan. Advances in knowledge: This is a clinical study to evaluate the clinical value of pulmonary nodules using ASIR-V algorithm in the same patients in the low-dose chest CT scans. It suggests that ASIR-V provides similar image quality and detection rate for pulmonary nodules at much reduced radiation dose.

1019: Clinical Value of [11C] Choline Petict in Patients with Rising PSA After Primary Treatment of Prostate Cancer

2007 ◽  
Vol 177 (4S) ◽  
pp. 336-336
Author(s):  
Ludwig Rinnab ◽  
Norbert M. Blumstein ◽  
Felix M. Mottaghy ◽  
Sven N. Reske ◽  
Richard E. Hautmann ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Primary Treatment ◽  
Clinical Value

“Aspirin - resistance”? A few critical considerations on definition, terminology, diagnosis, clinical value, natural course of atherosclerotic disease, and therapeutic consequences

VASA ◽  
2011 ◽  
Vol 40 (6) ◽  
pp. 429-438 ◽  
Author(s):  
Berent ◽  
Sinzinger
Keyword(s):  
Platelet Function ◽  
Point Of Care ◽  
Aspirin Resistance ◽  
Point Of View ◽  
Evidence Based ◽  
Platelet Function Tests ◽  
Clinical Value ◽  
Vascular Events ◽  
Therapeutic Consequences ◽  
Function Tests

Based upon various platelet function tests and the fact that patients experience vascular events despite taking acetylsalicylic acid (ASA or aspirin), it has been suggested that patients may become resistant to the action of this pharmacological compound. However, the term “aspirin resistance” was created almost two decades ago but is still not defined. Platelet function tests are not standardized, providing conflicting information and cut-off values are arbitrarily set. Intertest comparison reveals low agreement. Even point of care tests have been introduced before appropriate validation. Inflammation may activate platelets, co-medication(s) may interfere significantly with aspirin action on platelets. Platelet function and Cox-inhibition are only some of the effects of aspirin on haemostatic regulation. One single test is not reliable to identify an altered response. Therefore, it may be more appropriate to speak about “treatment failure” to aspirin therapy than using the term “aspirin resistance”. There is no evidence based justification from either the laboratory or the clinical point of view for platelet function testing in patients taking aspirin as well as from an economic standpoint. Until evidence based data from controlled studies will be available the term “aspirin resistance” should not be further used. A more robust monitoring of factors resulting in cardiovascular events such as inflammation is recommended.

Lung Ultrasound Findings in a Covid-19 Patient with Negative Chest CT

2020 ◽  
Author(s):  
Yale Tung Chen ◽  
Milagros Martí de Gracia ◽  
Maria Luz Parra Gordo ◽  
Silvia Ossaba Velez ◽  
Sergio Agudo-Fernández
Keyword(s):  
Lung Ultrasound ◽  
Chest Ct ◽  
Ultrasound Findings
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