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  • 1
    ISSN: 1436-2813
    Schlagwort(e): Key words Lung lobectomy ; Magnetic resonance imaging ; Left ventricular geometry ; Mediastinum ; Diaphragm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The thoracic cage after a lung resection is filled by the remaining lobes, the elevated diaphragm, the diminished thoracic cage, and by mediastinal shifting. The changes in the thorax after a lung resection were quantified using magnetic resonance imaging. The study group consisted of 39 patients who had undergone a lobectomy, four who had undergone a pneumonectomy, and 14 controls. The left ventricular angle, ascending aortic angle, mediastinal shift, longitudinal length of the thoracic cage, the distance between the thoracic apex and the level of the aortic valve, and diaphragmatic elevation were all measured. After a right lower lobectomy, the mediastinum shifted more rightward than after a right upper lobectomy. The diaphragm became more greatly elevated after a right upper lobectomy than after a right lower lobectomy. When a chest wall resection was added to a right upper lobectomy, the mediastinal anatomical changes decreased. After a left upper lobectomy, the degree of mediastinal shifting was greater than after a left lower lobectomy. A left upper lobectomy shifted the mediastinum at the level of the right atrium. This method is easily reproducible and was found to be effective for quantifying the changes in the thorax after a lung resection.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1436-2813
    Schlagwort(e): Key Words: bronchial tree ; rabbit casting model ; bronchial branching angle ; lobar volume ; lobectomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: n = 10) and A2 (n = 10) were control groups and groups B1 (n = 10) and B2 (n = 10) underwent RU lobectomy. Casting material was introduced into the airway and a heart-lung bloc was removed form the thoracic cavity in all groups. In groups A1 and B1, the volume of each lobe of the bilateral lungs was measured, while in groups A2 and B2, bronchial casts were made and the branching angles of the airway were measured. The volume ratio of the right upper lobe (RUL) to the total lung was 12.0 ± 0.4% in group A1; however, after RU lobectomy, the volume ratio of the right middle lobe (RML) to the total lung increased from 8.7 ± 0.6% in group A1 to 13.5 ± 0.8% in group B1. The volume of the left lung also increased from 43.0 ± 0.5% in group A1 to 48.8 ± 1.1% in group B1. The angle between the truncus intermedius and the RML bronchus was significantly smaller in group B2, at 109.0 ± 3.5°, than in group A2, in which it was 138.5 ± 1.7°. The angle between the RML bronchus and the coronal plane was 57.5 ± 2.5° in group A2 and 33.5 ± 3.3° in group B2. Our method of measuring the bronchial branching angle subsequent to RU lobectomy proved useful to illustrate postoperative positional changes and expansion of the remaining lobes.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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