Advanced Diagnostic & Interventional Radiology Research Center | Target sign linked to COVID-19 outcomes

Advanced Diagnostic & Interventional Radiology Research Center | Target sign linked to COVID-19 outcomes
| Dec 11 2025
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Advanced Diagnostic & Interventional Radiology Research Center

COVID-19 pandemic 

During the COVID-19 pandemic, the Radiology Research Center at Tehran University of Medical Sciences continued its research activities despite the challenges posed by the increased demand for CT scans of COVID-19 patients and the necessity of adhering to strict health protocols. This center played a crucial role in improving medical imaging techniques, optimizing diagnostic protocols, and advancing technologies related to CT scan image analysis.

Faculty members, researchers, and staff remained committed to ensuring the safety and well-being of healthcare professionals and patients while actively engaging in imaging data analysis, developing artificial intelligence algorithms for faster disease detection, publishing scientific articles, and presenting their findings at international conferences. These efforts aimed to enhance diagnostic accuracy, improve treatment processes, and alleviate pressure on healthcare systems.

 

Key achievements of the Radiology Research Center during the COVID-19 pandemic include:


✔️ Development and optimization of lung imaging protocols for faster and more accurate COVID-19 diagnosis
✔️ Implementation of artificial intelligence technologies for automated CT scan analysis and reduced diagnosis time
✔️ Publication of high-impact research articles on innovative imaging methods for COVID-19 patients
✔️ Participation in national and international projects focused on COVID-19 diagnosis and patient management

The center remains dedicated to advancing research in medical imaging and continues to contribute as a leading scientific institution in improving the quality of diagnostic and therapeutic services.

 

Some of the center's significant achievements during the pandemic include:

 

  • Release Date : Feb 16 2025 - 10:48
  • : 33
  • Study time : 1 minute(s)

Is target sign (bull’s eye appearance) associated with adverse outcomes in COVID 19 patients? A case series and literature review

Is target sign (bull's eye appearance) associated with adverse outcomes in COVID-19 {faces}

Background: In COVID-19 pneumonia, chest CT scan plays a crucial role in diagnosing and closely monitoring lung parenchyma. The main reportedly chest CT features of novel coronavirus pneumonia (NCP) have been fully discussed in the literature, but there is still a paucity of reports on uncommon CT manifestations.

Case presentation: Herewith, we have reported ten rRT-PCR confirmed COVID-19 patients with CT target signs (bull's eye appearance); additionally, we have reviewed previously reported cases. Reviewing the literature, we found eight COVID-19 patients with target sign in the literature. 18 patients were included with a median age of 43. 11 (61%) patients were males. In 87% of patients, the lesions developed within the second-week post symptom onset. These patients mostly experienced an extended hospital stay (median = 10 days), with 53.8% of cases being admitted in ICU. The in-hospital mortality rate was 23%.

Conclusion: Our findings indicate that lesions with a bull's eye appearance are not significantly associated with higher mortality in hospitalized COVID-19 patients.

Keywords: COVID-19; Pneumonia.; Severe acute respiratory syndrome coronavirus 2; Spiral computed; Tomography.

  • Article_DOI : 10.22088/cjim.13.0.270
  • Author(s) : mohammad-mehdi mehrabi nejad,sedighi salahshour
  • News Group : research,research article,covid 19
  • News Code : 293451
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Is target sign (bull's eye appearance) associated with adverse outcomes in COVID-19 patients? A case series and literature revie Is target sign (bull's eye appearance) associated with adverse outcomes in COVID-19

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