EP-1840: Motion artifacts in 4DCT: frequency and correlation with breathing pattern
نویسندگان
چکیده
منابع مشابه
Motion artifacts in optical coherence tomography with frequency-domain ranging.
We describe results of theoretical and experimental investigations of artifacts that can arise in spectral-domain optical coherence tomography (SD-OCT) and optical frequency domain imaging (OFDI) as a result of sample or probe beam motion. While SD-OCT and OFDI are based on similar spectral interferometric principles, the specifics of motion effects are quite different because of distinct signa...
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Background and Objectives: Nocturnal snoring and open mouth breathing in children is one of the common causes of referrals to pediatricians. The two most common reasons of this problem are adenotonsillar hypertrophy and allergic rhinitis. Based on the findings, there is still no significant relationship between these two diseases. Therefore, the aim of this study was to determine the frequency ...
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The major problem with ventilation distribution calculations using DIR and 4DCT is the motion artifacts in 4DCT. Quite often not all phases would exhibit mushroom motion artifacts. If the ventilation series similarity is sufficiently robust, the ventilation distribution can be calculated using only the artifact-free phases. This study investigated the ventilation similarity among the data deriv...
متن کاملthe past hospitalization and its association with suicide attempts and ideation in patients with mdd and comparison with bmd (depressed type) group
چکیده ندارد.
Breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises.
The objective of the present study was to evaluate breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises: diaphragmatic breathing (DB), flow-oriented (Triflo II) incentive spirometry and volume-oriented (Voldyne) incentive spirometry. Seventeen healthy subjects (12 females, 5 males) aged 23 +/- 5 years (mean +/- SD) were studied. Calibrated respirator...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2016
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(16)33091-2