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1.
Acad Radiol ; 31(4): 1400-1409, 2024 Apr.
Article in English | MEDLINE | ID: mdl-37925344

ABSTRACT

RATIONALE AND OBJECTIVES: T2-weighted imaging in at least two orthogonal planes is recommended for assessment of the uterus. To determine whether a convolutional neural network-based algorithm could be used for the re-constructions of uterus axes derived from a 3D SPACE with iterative denoising. MATERIALS AND METHODS: 50 patients aged 18-81 (mean: 42) years who underwent an MRI examination of the uterus participated voluntarily in this prospective study after informed consent. In addition to a standard MRI pelvis protocol, a 3D SPACE research application sequence was acquired in sagittal orientation. Reconstructions for both the cervix and the cavum in the short and long axes were performed by a research trainee (T), an experienced radiologist (E), and the prototype software (P). In the next step, the reconstructions were evaluated anonymously by two experienced readers according to 5-point-Likert-Scales. In addition, the length of the cervical canal, the length of the cavum and the distance between the tube angles were measured on all reconstructions. Interobserver agreement was assessed for all ratings. RESULTS: For all axes, significant differences were found between the scores of the reconstructions by research T, E and P. P received higher scores and was preferred significantly more often with the exception of the comparison of the reconstruction Cervix short of E (Cervix short: P vs. T: p = 0.02; P vs. E: p = 0.26; Cervix long: P vs. T: p = 0.01; P vs. E: p < 0.01; Cavum short: P vs. T: p = 0.01; P vs. E: p = 0.02; Cavum long: P vs. T: p < 0.01; P vs. E: p < 0.01). Regarding the measured diameters, (length of cervical canal/cavum/distance between tube angles) significantly larger diameters were recorded for P compared to E and T (Cervix long (mm): T: 25.43; E: 25.65; P: 26.65; Cavum short (mm): T: 26.24; E: 25.04; P: 27.33; Cavum long (mm): T: 31.98; E: 32.91; P: 34.41; P vs. T: p < 0.01); P vs. E: p = 0.04). Moderate to substantial agreement was found between Reader 1 and Reader 2 (range: 0.39-0.67). CONCLUSION: P was able to reconstruct the axes at least as well as or better than E and T. P could thereby lead to workflow facilitation and enable more efficient reporting of uterine MRI.


Subject(s)
Imaging, Three-Dimensional , Uterus , Female , Humans , Imaging, Three-Dimensional/methods , Prospective Studies , Uterus/diagnostic imaging , Magnetic Resonance Imaging/methods , Neural Networks, Computer
2.
Orv Hetil ; 145(18): 957-61, 2004 May 02.
Article in Hungarian | MEDLINE | ID: mdl-15188642

ABSTRACT

The authors report their 1535 urgent bronchoscopic examinations performed between 1998-2002. The examinations/interventions were requested mostly by surgical and internal medicine intensive care units. The main indications were: postoperative excretion removal, stump control, suspicion of fistula, foreign body, injury of a large bronchus, tracheal stenosis, specimen taking and bronchoscopic local drug treatment. The authors mention the most important contraindications for urgent bronchofiberscopy too: missing written consent of the patient (except the cases of unconsciousness), size discrepancy between the tool and tracheal lumen, and asthmatic attack. The authors also underline the emerging importance of both diagnostic and therapeutic bronchoscopy performed on emergency wards and intensive care units. They conclude: it's necessary for the anesthetists to get a basic level ability to work with bronchofiberscope and for pulmonologist-bronchologists to be experienced to answer the questions of other specialists.


Subject(s)
Bronchoscopy , Intensive Care Units , Respiratory Tract Diseases/diagnosis , Respiratory Tract Diseases/therapy , Airway Obstruction/diagnosis , Airway Obstruction/therapy , Bronchoscopy/standards , Contraindications , Diagnosis, Differential , Emergency Treatment/standards , Humans , Hungary , Retrospective Studies
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