Abstract:
AIM:To develop and assess a semiautomated method for segmenting and counting individual renal cysts from mid-slice MR images in patients with autosomal dominant polycystic kidney disease (ADPKD). METHODS:A semiautomated method was developed to segment and count individual renal cysts from mid-slice MR images in 241 subjects with ADPKD from the Consortium for Radiologic Imaging Studies of Polycystic Kidney Disease. For each subject, a mid-slice MR image was selected from each set of coronal T2-weighted MR images covering the entire kidney. The selected mid-slice image was processed with the semiautomated method to segment and count individual renal cysts. The number of cysts from the mid-slice image of each kidney was also measured by manual counting. The level of agreement between the semiautomated and manual cyst counts was compared using intraclass correlation (ICC) and a Bland-Altman plot. RESULTS:Individual renal cysts were successfully segmented using the semiautomated method in all 241 cases. The number of cysts in each kidney measured with the semiautomated and manual counting methods correlated well (ICC = 0.96 for the right or left kidney), with a small average difference (-0.52, with higher semiautomated counts, for the right kidney, and 0.13, with higher manual counts, for the left kidney) in the semiautomated method. However, there was substantial variation in a small number of subjects; 6 of 241 participants (2.5%) had a difference in the total cyst count of more than 15. CONCLUSION:We have developed a semiautomated method to segment individual renal cysts from mid-slice MR images in ADPKD kidneys as a quantitative indicator of characterization and disease progression of ADPKD.
journal_name
Am J Nephroljournal_title
American journal of nephrologyauthors
Bae KT,Sun H,Lee JG,Bae K,Wang J,Tao C,Chapman AB,Torres VE,Grantham JJ,Mrug M,Bennett WM,Flessner MF,Landsittel DP,Consortium for Radiologic Imaging Studies of Polycystic Kidney Disease.doi
10.1159/000358604subject
Has Abstractpub_date
2014-01-01 00:00:00pages
210-7issue
3eissn
0250-8095issn
1421-9670pii
000358604journal_volume
39pub_type
临床试验,杂志文章abstract::The glomerular ultrastructure was retrospectively reviewed from 45 renal transplant biopsies with the clinical and light microscopic diagnosis of acute rejection (25 cases) and chronic rejection (20 cases). Three grades of morphologic alteration were ultrastructurally defined. In acute rejection, capillary lumenal obl...
journal_title:American journal of nephrology
pub_type: 杂志文章
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abstract:BACKGROUND:Although there is a very high mortality rate (>50%) with acute renal failure (ARF) in the intensive care unit (ICU), there is no general consensus on the best dialysis treatment for this condition. METHODS:We surveyed by mail questionnaire, all adult academic and community registered Canadian nephrology cen...
journal_title:American journal of nephrology
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journal_title:American journal of nephrology
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pub_type: 杂志文章,多中心研究,随机对照试验
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