Diagnosis of foreign body aspiration with ultralow-dose CT using a tin filter: a comparison study

Gordon, Lena; Nowik, Patrik; Kesheh, Shahla Mobini; Lidegran, Marika; Diaz, Sandra

doi:10.1007/s10140-020-01764-7

Cited by 21 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the resolution of the image, together with the difficulty in identifying certain lesions, makes it an exam with an unreliable radiological diagnosis. Computed tomography is an exam with high image quality and provides an easy diagnosis, although it presents limited specificity and a high dose of radiation in comparison with thorax X-ray (Gordon et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Laboratory findings in imaging diagnostic tests in patients infected with COVID-19 – A study review

Souza

Santos

Melo³

et al. 2021

RSD

View full text Add to dashboard Cite

Purpose: This study disseminates the diagnosis of COVID-19 emphasizing the importance of imaging tests in medical interpretation and identification of its complications, besides demonstrating the contribution to patient care. Methodology: The study was conducted based on a literature review, in addition to the acquired results of imaging tests from clinical patients at a Public Hospital of the State of Sergipe, Brazil, to point the scoring system in thorax radiography and compare to computed tomography (CT). Results: The imaging tests are not indicated for patients with mild symptoms and suspected COVID-19 infection, except for risk of disease progression, being indicated in the complementary diagnosis of COVID-19 positive patients. Studies show that thorax radiography is more used because it has low cost and easy access. However, its use has limitations due to the low sharpness of the images and impossibility of visualization of some lesions. Computed tomography, on the other hand, can be used as a pulmonary monitoring and evolution test in patients with COVID-19 worsening and/or persistent homeostatic changes. Nevertheless, this test is not indicated for acute cases without aggravating symptoms. Conclusion: The high degree of dissemination of SARS-CoV-2 and the collapse of health systems demonstrated the importance of the science in health. In addition, the importance of laboratory tests in the diagnosis of virus infection and imaging tests in the early diagnosis of SARS-CoV-2 pneumonia has been shown as efficient complementarity in the evolution and clinical interpretation of patients, highlighting the importance of radiography and CT exams.

show abstract

Section: Resultsmentioning

confidence: 99%

Laboratory findings in imaging diagnostic tests in patients infected with COVID-19 – A study review

Souza

Santos

Melo³

et al. 2021

RSD

View full text Add to dashboard Cite

show abstract

“…According to various studies, the sensitivity of multidetector CT for the detection of a bronchial foreign body is close to 100%, with a specificity ranging between 66.7% and 100%. False positives are generally related to the presence of a mucus plug or artifact [ 8 ].…”

Section: Discussionmentioning

confidence: 99%

A direct adverse effect of smoking

Kyriakopoulos

Gogali

Chronis

et al. 2021

Respiratory Medicine Case Reports

View full text Add to dashboard Cite

Smoking has been accounted for numerous adverse effects. We report a direct effect of smoking in a 73-year-old patient, a heavy smoker who presented to the emergency department with a 48-h history of productive cough and fever. Chest x-ray and chest CT revealed right lung infiltrates; however, they were not suggestive of the diagnosis, which was established through flexible bronchoscopy. The specific procedure concurrently contributed to the treatment of the patient.

show abstract

“… 26 The third‐generation DSCT turbo FLASH mode temporal resolution can be up to 66 ms with the highest pitch of 3.2 and SFOV of Ø 35.4 cm, and it is suitable for conditions requiring high temporal resolution and no large SFOV, like cardiovascular CT imaging, 8 , 27 , 28 , 29 and nonobese patient or pediatrics imaging. 1 , 30 , 31 Because the scanning speed of the third‐generation turbo FLASH mode is more ultrafast than the second‐generation FLASH mode, using the turbo FLASH mode with a lower pitch can still achieve a similar time resolution when using the FLASH mode with a higher pitch. In addition, the SFOV of the turbo FLASH mode can be increased from Ø 35.4 to Ø 50 cm with the decrease of the pitch from 3.2 to 1.55.…”

Section: Discussionmentioning

confidence: 99%

The ultrafast, high‐pitch turbo FLASH mode of third‐generation dual‐source CT: Effect of different pitch and corresponding SFOV on image quality in a phantom study

Zhou

et al. 2021

J Applied Clin Med Phys

View full text Add to dashboard Cite

Purpose To investigate the effect of different pitches and corresponding scan fields of view (SFOVs) on the image quality in the ultrafast, high‐pitch turbo FLASH mode of the third‐generation dual‐source CT using an anthropomorphic phantom. Methods The phantom was scanned using the ultrafast, high‐pitch turbo FLASH protocols of the third‐generation dual‐source CT with the different pitches and corresponding SFOVs (pitches: 1.55 to 3.2 with increments of 0.1, SFOVs: 50 cm to 35.4 cm). The objective parameters such as the CT number, image noises, signal‐to‐noise ratio (SNR), contrast‐to‐noise ratio (CNR), and artifacts index (AI), and image features from the head, chest, and abdomen were compared between the CT images with a pitch of 1.55 and SFOV of Ø 50 cm and a pitch of 3.2 and SFOV of Ø 35.4 cm. Then, the 18 series of CT images of the head, chest, and abdomen were evaluated by three radiologists independently. Results The differences in the CT numbers were not statically significant between the CT images with a pitch of 1.55 and SFOV of Ø 50 cm and a pitch of 3.2 and SFOV of Ø 35.4 cm from most body parts and potential combinations (p > 0.05), Most of the image noises and the AI from the images with the pitch of 1.55 were significantly lower than those with the pitch of 3.2 (p < 0.05), and the SNR and CNR from the images with the pitch of 1.55 were higher than those with the pitch of 3.2. There were significant differences in the first‐order features and texture features of the head (59.3%, 28.3%), chest (66%, 35.7%), and abdomen (71.6%, 64.7%) (p < 0.05). The subjective image quality was excellent when the pitch was less than 2.0 and gradually decreased with the increasing pitch. In addition, the image quality decreased significantly when the pitch was higher than 3.0 (all k≥0.69), especially in the head and chest. Conclusions In the ultrafast, high‐pitch turbo FLASH mode of the third‐generation DSCT, increasing the pitch and lowering the corresponding SFOV will change the image features and cause more artifacts degrading the image quality. Specific to the clinical needs, decreasing the pitch not only can expand the SFOV but also can improve the image quality.

show abstract

Diagnosis of foreign body aspiration with ultralow-dose CT using a tin filter: a comparison study

Cited by 21 publications

References 19 publications

Laboratory findings in imaging diagnostic tests in patients infected with COVID-19 – A study review

Laboratory findings in imaging diagnostic tests in patients infected with COVID-19 – A study review

A direct adverse effect of smoking

The ultrafast, high‐pitch turbo FLASH mode of third‐generation dual‐source CT: Effect of different pitch and corresponding SFOV on image quality in a phantom study

Contact Info

Product

Resources

About