Perihilar branching patterns of renal artery and extrarenal length of arterial branches and tumour-feeding arteries on multidetector CT angiography
- Authors
- Kang, W. Y.; Sung, D. J.; Park, B. J.; Kim, M. J.; Han, N. Y.; Cho, S. B.; Kang, C. H.; Kang, S. H.
- Issue Date
- 3월-2013
- Publisher
- BRITISH INST RADIOLOGY
- Citation
- BRITISH JOURNAL OF RADIOLOGY, v.86, no.1023
- Indexed
- SCIE
SCOPUS
- Journal Title
- BRITISH JOURNAL OF RADIOLOGY
- Volume
- 86
- Number
- 1023
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/103901
- DOI
- 10.1259/bjr.20120387
- ISSN
- 0007-1285
- Abstract
- Objective: The purpose of our study was to assess the extrarenal length of renal arterial branches and tumour-feeding arteries on multidetector CT (MDCT) angiography, in addition to the perihilar branching patterns, with relevance to segmental artery clamping. Methods: MDCT angiograms of 64 patients with renal masses <4 cm were retrospectively reviewed by 2 radiologists. The perihilar branching patterns of the single main renal artery were assessed according to the number of pre-segmental and segmental arteries. The extrarenal lengths of segmental plus pre-segmental arteries and the tumour-feeding arteries, measured on volume-rendered images, were compared according to the vascular segmentation and the tumour location, respectively. Results: In the 116 kidneys, 1 pre-segmental plus 5 segmental arteries (n = 48) was the most common branching pattern. The mean extrarenal length of the inferior segmental plus pre-segmental arteries (33.05 mm) and the posterior segmental plus pre-segmental arteries (32.30 mm) was longer than any of the other segmental plus pre-segmental arteries (apical, 23.87 mm; superior, 26.80 mm; middle, 29.23 mm) (p<0.05). The mean extrarenal length of the lower pole tumour-feeding arteries (35.94 mm) was longer than those of the upper and mid-pole tumour-feeding arteries (24.95 mm, 29.62 mm), with significant difference between the lower and the upper pole tumour-feeding arteries (p<0.05). Conclusion: Tumours in the lower pole, supplied by the inferior or posterior segmental artery, may be more amenable to segmental artery clamping. Advances in knowledge: MDCT angiography with volume rendering can demonstrate the extrarenal length of tumour-feeding arteries and may help in determining the accessibility for segmental artery clamping.
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