Pulmonary veno-occlusive disease (PVOD), a rare form of pulmonary arterial hypertension (PAH), requires histological proof for definitive diagnosis; however, lung biopsy is not recommended in PAH. Recent conjoint European Respiratory Society/European Society of Cardiology guidelines suggest that nonmatched perfusion defects on ventilation/perfusion (V'/Q') lung scanning in PAH patients may sugg...

bilateral diffuse intense breast uptake was noted in a 40 year old female who was evaluated with tc-99m sestamibi (mibi) myocardial perfusion scan for possible ischemia. she was breast feeding her 1.5 year old child. the intense uptake in the breasts was superimposed on the apical and anteroapical regions of the myocardium and caused interpretation problem. we recommend considering tc-99m mibi ...

introduction:the external beam radiation therapy for patients with left breast cancer at the mastectomy site may cause myocardial perfusion abnormalities. we intended to study the change of these abnormalities at short and long term post radiotherapy follow up. methods: twenty patients with left and 20 patients with right breast cancer comprised the exposed and control groups, respectively. the...

Received 10/14/2004; revised 3/14/2005; accepted 3/17/2005. For correspondence or reprints contact: Zen-Kong Dai, M.D., Department of Pediatrics, Kaohsiung Municipal Hsiao-Kang Hospital. 483 Shan-Ming Road, Hsiao-Kang District, Kaohsiung 812, Taiwan. Tel: (886)7-3121101 ext. 7153, Fax: (886)7-3117521, E-mail: [email protected] Background: In this study, we enrolled pediatric cases with history of...

To determine the sensitivities and specificities of ventilation/perfusion lung scans for acute pulmonary embolism, a random sample of 933 of 1493 patients was studied prospectively. Nine hundred thirty-one underwent scintigraphy and 755 underwent pulmonary angiography; 251 (33%) of 755 demonstrated pulmonary embolism. Almost all patients with pulmonary embolism had abnormal scans of high, inter...

OBJECTIVE This study evaluated and optimized the performance of an automated artificial neural network image interpreter in the diagnosis of pulmonary embolism on ventilation-perfusion lung scans. The computer interpretations were compared with the interpretations of three experienced observers. MATERIALS AND METHODS Digital data were obtained from 100 patients with normal findings on chest r...

OBJECTIVE Mainstem bronchus obstruction results in lung function exclusion. The aim of this study was to revisit lung function restoration obtained by different types of bronchial sleeve resections in selected patients with endobronchial tumors. METHODS Eleven patients (9 women and 2 men, mean age 47 years) presented with endobronchial tumors and ipsilateral lung function exclusion. Mainstem ...

The value of perfusion scintigraphy in the detection of pulmonary embolism (PE) was demonstrated as early as 1964 by Wagner et al. PE causes perfusion defects that conform to the anatomical distribution of the pulmonary vascular bed. Perfusion defects in acute PE are therefore of sub-segmental, segmental or lobar character. Ventilation is normally preserved in these areas and the observed wedge...