Dataset Information

Branching patterns and variations of the bronchus and blood vessels in the superior segment of the right lower lobe: a three-dimensional computed tomographic bronchography and angiography study.

ABSTRACT:

Background

Superior segmentectomy is classified as simple due to the single intersegmental plane between the superior and basal segments. However, oncological outcomes in patients undergoing superior segmentectomy tend to be worse compared to those receiving other segmentectomy. The aim of this study is to determine the branching patterns and variations of the bronchus and blood vessels of the superior segment of the right lower lobe (RS⁶).

Methods

Three-dimensional computed tomographic bronchography and angiography (3D-CTBA) was reconstructed in 316 patients who underwent enhanced chest computed tomography (CT) and subsequent surgery in our center from November 2018 to March 2021.

Results

The bronchus in RS⁶ consisted of a single stem in 96.5% cases (305/316), and 2 separate stems in the remaining 3.5% cases (11/316). The artery in RS⁶ consisted of a single stem in 59.5% cases (188/316), 2 separate stems in 37.0% cases (117/316), and 3 separate stems in the remaining 3.5% cases (11/316). The vein in RS⁶ consisted of a single stem in 94.3% cases (298/316) and 2 separate stems in the remaining 5.7% cases (18/316). B⁶ variation was noted in 1.6% cases (5/316). A⁶ variation was noted in 18.0% cases (57/316), including the following: (I) coexistence of A⁶ and A² (n=25); (II) A⁶b originating from A⁹⁺¹⁰/A¹⁰ alone (n=20); (III) A⁶c originating from A⁹⁺¹⁰ (n=10); and (IV) co-draining of A⁶ and A⁷ (n=2). V⁶ variation was noted in 11.7% cases (37/316), including the following: (I) co-draining of V⁶ and V² (n=20); (II) co-draining of V⁶ and V⁴ (n=5); (III) V⁶ and V⁸⁺⁹ co-draining (n=3); (IV) V⁶ draining into the superior pulmonary vein (n=4); and (V) direct V⁶ draining into the left atrium (n=5).

Conclusions

Variation of A⁶ and V⁶ in RS⁶ is much more common than previously reported. 3D-CTBA reconstruction is useful for pre-surgery planning.

SUBMITTER: Zhu S

PROVIDER: S-EPMC10797402 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Branching patterns and variations of the bronchus and blood vessels in the superior segment of the right lower lobe: a three-dimensional computed tomographic bronchography and angiography study.

Zhu Shusheng S Xu Wenzheng W Li Zhihua Z Wu Weibing W Brunelli Alessandro A Matsuura Yosuke Y Maurizi Giulio G Tosi Davide D Bouabdallah Ilies I Gossot Dominique D Chen Liang L

Journal of thoracic disease 20231226 12

<h4>Background</h4>Superior segmentectomy is classified as simple due to the single intersegmental plane between the superior and basal segments. However, oncological outcomes in patients undergoing superior segmentectomy tend to be worse compared to those receiving other segmentectomy. The aim of this study is to determine the branching patterns and variations of the bronchus and blood vessels of the superior segment of the right lower lobe (RS<sup>6</sup>).<h4>Methods</h4>Three-dimensional com ...[more]

PMID: 38249928

Similar Datasets

Project description:AimTo evaluate the performance of three contrast media (CM) injection protocols for cardiac computed tomography angiography (CCTA) based on body weight (BW), lean BW (LBW), and cardiac output (CO). Materials and methods. A total of 327 consecutive patients referred for CCTA were randomized into one of the three CM injection protocols, where CM injection was based on either BW (112 patients), LBW (108 patients), or CO (107 patients). LBW and CO were calculated via formulas. All scans were ECG-gated and performed on a third-generation dual-source CT with 70-120 kV (automated tube voltage selection) and 100 kVqual.ref/330 mAsqual.ref. CM injection protocols were also adapted to scan time and tube voltage. The primary outcome was the proportion of patients with optimal intravascular attenuation (325-500 HU). Secondary outcomes were mean and standard deviation of intravascular attenuation values (HU), contrast-to-noise ratio (CNR), and subjective image quality with a 4-point Likert scale (1 = poor/2 = sufficient/3 = good/4 = excellent). The t-test for independent samples was used for pairwise comparisons between groups, and a chi-square test (χ2) was used to compare categorical variables between groups. All p values were 2-sided, and a p < 0.05 was considered statistically significant.ResultsMean overall HU and CNR were 423 ± 60HU/14 ± 3 (BW), 404 ± 62HU/14 ± 3 (LBW), and 413 ± 63HU/14 ± 3 (CO) with a significant difference between groups BW and LBW (p=0.024). The proportion of patients with optimal intravascular attenuation (325-500 HU) was 83.9%, 84.3%, and 86.9% for groups BW, LBW, and CO, respectively, and between-group differences were small and nonsignificant. Mean CNR was diagnostic (≥10) in all groups. The proportion of scans with good-excellent image quality was 94.6%, 86.1%, and 90.7% in the BW, LBW, and CO groups, respectively. The difference between proportions was significant between the BW and LBW groups.ConclusionPersonalization of CM injection protocols based on BW, LBW, and CO, and scan time and tube voltage in CCTA resulted in low variation between patients in terms of intravascular attenuation and a high proportion of scans with an optimal intravascular attenuation. The results suggest that personalized CM injection protocols based on LBW or CO have no additional benefit when compared with CM injection protocols based on BW.

Dataset Information

Branching patterns and variations of the bronchus and blood vessels in the superior segment of the right lower lobe: a three-dimensional computed tomographic bronchography and angiography study.

Background

Methods

Results

Conclusions

Publications

Branching patterns and variations of the bronchus and blood vessels in the superior segment of the right lower lobe: a three-dimensional computed tomographic bronchography and angiography study.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets