Maurizio Bartolucci

Background: Pulmonary embolism (PE) is a life-threatening condition in which early diagnosis and prompt treatment are essential to reduce morbidity and mortality. Recent advances in radiomics have introduced software tools for PE detection on CT pulmonary angiography (CTPA), but their application to non-contrast chest CT remains unexplored. Methods: We retrospectively identified 57 CTPA examinations performed between January 2020 and March 2023. Patients were randomly assigned to training and validation cohorts; an additional 14 PE-negative patients were included in the validation cohort. Spherical regions of interest (ROIs) were manually placed within emboli and within normal-flow pulmonary arteries. From each ROI, 836 radiomic features were extracted. Statistically significant features were identified using the Wilcoxon test. A logistic regression classifier was then developed to discriminate between embolus and control ROIs based on their radiomic signatures. Results: Of the 836 features, 242 (all derived from wavelet-filtered images) showed significant differences between embolus and normal-flow ROIs on unenhanced CT. The classifier demonstrated high diagnostic performance in the validation cohort, with an AUC of 0.87 (95% CI: 0.86–0.88) and an accuracy of 0.77 (95% CI: 0.76–0.79), with only a limited number of misclassified ROIs. Conclusions: This preliminary study demonstrates the potential of radiomics to identify thrombi on unenhanced chest CT scans, offering a promising avenue for the early detection of acute PE. The proposed model showed satisfactory diagnostic accuracy with low few misclassifications, supporting further validation in larger cohorts.

Introduction: Non-compressible torso hemorrhage (NCTH) is a major cause of preventable mortality in trauma, particularly when immediate surgical intervention is not available. Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) has emerged as a promising technique to control severe hemorrhaging and stabilize patients until definitive surgical care can be performed. Case Presentation: We report the case of a 45-year-old woman who sustained multiple traumatic injuries—including thoracic, pelvic, and aortic damage—after a fall from approximately 5 m in an apparent suicide attempt. She arrived at a secondary-level trauma center in profound hemorrhagic shock, unresponsive to standard resuscitation. Interventions: As the patient’s condition deteriorated to cardiac arrest, an emergent REBOA procedure was performed by emergency physicians. This intervention rapidly restored hemodynamic stability, enabling damage control resuscitation and safe transfer to a Level 1 Trauma Center for definitive surgical management, including thoracic endovascular aortic repair and splenectomy. Outcomes: After prolonged intensive care, the patient recovered sufficiently to be discharged for rehabilitation. This case illustrates the life-saving potential of early REBOA deployment in a non-surgical, resource-limited setting to bridge patients to definitive care. Conclusions: This case supports integrating REBOA into emergency trauma protocols, particularly in centers without immediate surgical capabilities. Further research is warranted to refine REBOA deployment strategies, balloon positioning, patient selection, and the role of imaging guidance.

Background: Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) is an emerging technique in trauma care for managing severe hemorrhage when conventional resuscitation is inadequate. Methods: We report a case involving a 45 yo female patient who sustained multiple traumatic injuries—including thoracic, pelvic, and aortic damage—after a fall from approximately 5 meters. The timely insertion of a REBOA device provided critical hemodynamic support, allowing for temporary stabilization in the emergency department according to the principles of Damage Control Resuscitation. Results: This intervention facilitated her subsequent transfer to a Level 1 Trauma Center for definitive surgical intervention.Although the patient's prognosis remained poor due to the severity of her injuries, the use of REBOA illustrated its potential utility in improving hemodynamic stability in critically injured patients. Conclusions: Our findings suggest that REBOA can be a valuable adjunct in trauma management, offering a life-saving option in critical hemorrhagic cases where traditional methods are insufficient. Further research is warranted to refine REBOA application, particularly concerning optimal balloon positioning and integration with imaging techniques.

This article aims to detect lung cavitations using lung ultrasound (LUS) in a cohort of patients with pulmonary tuberculosis (TB) and correlate the findings with chest computed tomography (CT) and chest X-ray (CXR) to obtain LUS diagnostic sensitivity. Patients with suspected TB were enrolled after being evaluated with CXR and chest CT. A blinded radiologist performed LUS within 3 days after admission at the Infectious Diseases Department. Finally, 82 patients were enrolled in this study. Bronchoalveolar lavage (BAL) confirmed TB in 58/82 (71%). Chest CT showed pulmonary cavitations in 38/82 (43.6%; 32 TB patients and 6 non-TB ones), LUS in 15/82 (18.3%; 11 TB patients and 4 non-TB ones) and CXR in 27/82 (33%; 23 TB patients and 4 non-TB ones). Twelve patients with multiple cavitations were detected with CT and only one with LUS. LUS sensitivity was 39.5%, specificity 100%, PPV 100% and NPV 65.7%. CXR sensitivity was 68.4% and specificity 97.8%. No false positive cases were found. LUS sensitivity was rather low, as many cavitated consolidations did not reach the pleural surface. Aerated cavitations could be detected with LUS with relative confidence, highlighting a thin air crescent sign towards the pleural surface within a hypoechoic area of consolidation, easily distinguishable from a dynamic or static air bronchogram.

This article aims to detect lung cavitations using lung ultrasound (LUS) in a cohort of patients with pulmonary tuberculosis (TB) and correlate the findings with chest computed tomography (CT) and chest x-ray (CXR) to obtain LUS diagnostic sensitivity. Patients with suspected TB were enrolled after being evaluated with CXR and chest CT. A blinded radiologist performed LUS within 3 days after the admission at the Infectious Diseases Department. Finally, 82 patients were enrolled in the study. BAL confirmed TB in 58/82 (71%). Chest CT showed pulmonary cavitations in 38/82 (43.6%; 32 TB patients and 6 non-TB ones), LUS in 15/82 (18.3%; 11 TB patients and 4 non-TB ones) and CXR in 27/82 (33%; 23 TB patients and 4 non-TB ones). Patients with multiple cavitations were 12 detected at CT and only 1 at LUS. LUS sensitivity was 39.5%, specificity 100%, PPV 100%, NPV 65.7%. CXR sensitivity was 68.4% and specificity 97.8%. No false positive cases were found. LUS sensitivity is rather low as many cavitated consolidations do not reach the pleural surface. Aerated cavitations could be detected with LUS with relative confidence, highlighting a thin air-crescent sign towards the pleural surface within a hypoechoic area of consolidation, easily distinguishable from dynamic or static air-bronchogram.

Background: Immune checkpoint inhibitors (ICIs) have revolutionized the therapeutic horizons of various cancers. However, immune-related adverse events have been reported, including interstitial lung diseases. Our aim was to describe the clinical and radiological features and survival of a multicentre cohort of patients who developed ICI-related lung toxicity. Methods: Six Italian centres were involved in the study. Patients who were treated with anti-PD-1/PD-L1 and CTLA-4 mAbs and developed ICI-related lung toxicity were recruited retrospectively to study clinical, radiological, immunological and survival data. Results: A total of 41 patients (25 males, 66.8 ± 9.9 years) were enrolled. Lung toxicity occurred after 204.3 ± 208.3 days of therapy, with ground glass opacities being the most common HRCT pattern (23 cases). Male sex, lung cancer and acute respiratory failure were associated with a shorter latency of toxicity (p = 0.0030, p = 0.0245 and p = 0.0390, respectively). Patients who required high-flow oxygen therapy showed significantly worse survival (p = 0.0028). Conclusions: Our cohort showed heterogeneous clinical and radiological aspects of ICI-related lung toxicity, with a latency not limited to the first year of treatment. Severity was mainly mild to moderate, although life-threatening events did occur. Our data indicate that strict long-term follow-up is needed to enable early diagnosis and appropriate management.

The sphenoid bone is an unpaired bone that contributes to the formation of the skull base. Despite the enormous progress in transnasal endoscopic visualisation, imaging techniques remain the cornerstones to characterise any pathological condition arising in this area. In the present review, we offer a bird’s-eye view of the developmental, inflammatory, and neoplastic alterations affecting the sphenoid body and clivus, with the aim to propose a practical diagnostic aid for radiologists based on clinico-epidemiological, computed tomography, and magnetic resonance imaging features.

Purpose We have focused on the two-dimensional (B-mode) and the time-motion (M-mode) analysis of the zone of apposition to determine the reliability of diaphragm ultrasonography in the clinical environment. Methods Ten healthy volunteers were enrolled and studied by three operators with different skills in ultrasonography. For every volunteer, each operator acquired three images of the diaphragm for each side, both in B-mode and in M-mode. Then a fourth operator calculated the thickening fraction (TF), by means of the formula TF = (TEI − TEE)/TEE (TEI is the thickness at end inspiration and TEE the thickness at end expiration). Afterwards, intraclass correlation coefficients (ICCs) were computed on TF to establish reproducibility and repeatability both in the B- and M-modes. An ICC ≤ 0.3 was considered acceptable. Results Both B-mode (ICCs 0.16–0.26) and M-mode (ICCs 0.10–0.15) were sufficiently repeatable to assess TF, except in the case of B-mode for the less experienced operator (ICCs B-mode 0.20–0.32). Reproducibility was moderate to good among the operators with ICCs much narrower for the M-mode (0.13–0.14). Conclusions The results of our study have shown that diaphragm ultrasound is repeatable and reproducible when carried out by a radiologist or an intensivist with a basic curriculum in ultrasonography. The method is more accurate when using the M-mode for less experienced operators, and in this case, repeatability and reproducibility are not sufficient to make clinical decisions. No TF value lower than 36% was obtained using both techniques. This suggests the existence of a cut-off value that could be used as an initial tool to discriminate healthy subjects from those affected by diaphragmatic dysfunction. Clinical trial registration EUDRACT 2015-004635-12.