La Radiologia medica · 2019
Volumetric analysis of Non-contrast Magnetic Resonance Lymphangiography in patients affected by lower extremities primary lymphedema.
СтатьяНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Cellina Michaela, Gibelli Daniele, Floridi Chiara, Oliva Giancarlo
Аннотация
AIM: Since the response to conservative and surgical treatments in lymphedema is based only on clinical evaluation, we want to propose a new technique for the volume calculation of lower extremities affected by lymphedema.
MATERIALS AND METHODS: Ten female patients affected by primary LE of the lower limbs (mean age 33 ± 5 years; age range 16-42) underwent NCMRL in September 2019. Acquisition protocol included a STIR sequence (FOV 460 × 504 mm; matrix 315 × 384 pixel; voxel size 1.1 × 1.1 × 1.0 mm; TR 3000 ms; TE 254 ms; TI 160 ms). Two readers independently performed a manual segmentation with ITK-SNAP open-source software to assess the volume of the lower limbs. The agreement for volumetric segmentation between the two operators was assessed through intraclass correlation coefficient (ICC).
RESULTS: Mean segmentation time was 5 ± 0.3 min. ICC demonstrated excellent intra-examiner agreements for both readers 1 (ICC = 0.9991, p < 0.0001) and 2 (ICC = 0.9989, p < 0.0001). Inter-reader agreement was excellent (ICC = 0.9991, p < 0.0001).
CONCLUSIONS: Manual segmentation with ITK-SNAP of NCMRL examinations in patients affected by primary lower limb LE represents a reproducible procedure for an objective evaluation of volumes, useful for follow-up.
MATERIALS AND METHODS: Ten female patients affected by primary LE of the lower limbs (mean age 33 ± 5 years; age range 16-42) underwent NCMRL in September 2019. Acquisition protocol included a STIR sequence (FOV 460 × 504 mm; matrix 315 × 384 pixel; voxel size 1.1 × 1.1 × 1.0 mm; TR 3000 ms; TE 254 ms; TI 160 ms). Two readers independently performed a manual segmentation with ITK-SNAP open-source software to assess the volume of the lower limbs. The agreement for volumetric segmentation between the two operators was assessed through intraclass correlation coefficient (ICC).
RESULTS: Mean segmentation time was 5 ± 0.3 min. ICC demonstrated excellent intra-examiner agreements for both readers 1 (ICC = 0.9991, p < 0.0001) and 2 (ICC = 0.9989, p < 0.0001). Inter-reader agreement was excellent (ICC = 0.9991, p < 0.0001).
CONCLUSIONS: Manual segmentation with ITK-SNAP of NCMRL examinations in patients affected by primary lower limb LE represents a reproducible procedure for an objective evaluation of volumes, useful for follow-up.