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P Y Brillet

Publications and source records attributed to P Y Brillet.

3 recordsLinked to original sources
PubMed2006

Quantification of bronchial dimensions at MDCT using dedicated software.

This study aimed to assess the feasibility of quantification of bronchial dimensions at MDCT using dedicated software (BronCare). We evaluated the reliability of the software to segment the airways and defined criteria ensuring accurate measurements. BronCare was applied on two successive examinations in 10 mild asthmatic patients. Acquisitions were performed at pneumotachographically controlled lung volume (65% TLC), with reconstructions focused on the right lung base. Five validation criteria were imposed: (1) bronchus type: segmental and subsegmental; (2) lumen area (LA)>4 mm2; (3) bronchus length (Lg) > 7 mm; (4) confidence index - giving the percentage of the bronchus not abutted by a vessel - (CI) >55% for validation of wall area (WA) and (5) a minimum of 10 contiguous cross-sectional images fulfilling the criteria. A complete segmentation procedure on both acquisitions made possible an evaluation of LA and WA in 174/223 (78%) and 171/174 (98%) of bronchi, respectively. The validation criteria were met for 56/69 (81%) and for 16/69 (23%) of segmental bronchi and for 73/102 (72%) and 58/102 (57%) of subsegmental bronchi, for LA and WA, respectively. In conclusion, BronCare is reliable to segment the airways in clinical practice. The proposed criteria seem appropriate to select bronchi candidates for measurement.

Asthma↗
PubMed2001

[Investigation of peripheral vascular bed in critical lower limb ischemia: comparative study between arteriography and magnetic resonance angiography].

OBJECTIVES: To determine the precise role of arteriography and contrast-enhanced magnetic resonance angiography (MRA) to evaluate the peripheral vascular bed in critical ischemia of the lower limbs in candidates for distal vascularization. MATERIAL AND METHODS: Fifteen patients (mean age 66 +/- 18 years) underwent MRA and arteriography. In all, 23 lower limbs were studied by non-selective arteriography with aortic injection (n=12) or selective arteriography with iliofemoral injection (n=11). RESULTS: The strength of agreement between MRA and selective arteriography was good (k=0.75) for analysis of leg arteries. MRA was better than non-selective arteriography (p<0.035) to evaluate artery patency. In our study, only MRA improved the treatment decision. CONCLUSION: In patients requiring an assessment of the peripheral vascular bed before distal revascularization, contrast-enhanced MRA can be the first exam. In case of an inadequate MRA, only selective arteriography needs to be performed.

Adult↗