2024 Organ-based tube current modulation

Organ-based tube current modulation

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August undefined, 2024

WitrynaDose Reduction With Organ-Based Tube-Current Modulation 2). To evaluate the organ-based tube-current mod - ulation for head scanning protocols, the head of the anthropomorphic phantom was scanned. A 0.6-mL point ion chamber (model 10 × 5–0.6, without build-up cap, Radcal) was used to mea- Witryna21 sty 2024 · Organ-based tube current modulation (OBTCM) is an effective method for reducing lens exposure because it reduces the dose to the anterior aspect of the …

Radiation Dose Modulation Techniques in the ... - RadioGraphics

Witryna10 kwi 2024 · Background Multi slice computed tomography (MSCT) is the most common used method in middle ear imaging. However, MSCT lacks the ability to distinguish the ossicular chain microstructures in detail resulting in poorer diagnostic outcomes. Novel cone beam computed tomography (CBCT) devices’ image resolution is, on the other … ezlink office

Radiation dose reduction to the eye lens in head CT using …

Witryna1 gru 2013 · a. OB-TCM = organ-based tube-current modulation. b. ATCM = automatic tube-current modulation. The ATCM technique adapts and modulates the X-ray tube current in the x-y-z axis according to the patient's individual anatomy. The brand name of the ATCM technique which adjusts tube current based on patient … WitrynaOrgan-based tube current modulation (OBTCM) is an effective method for reducing lens exposure because it reduces the dose to the anterior aspect of the patient. However, it is challenging to visualize the complex dose distribution when factoring in double irradiation. Purpose: To visualize twice-irradiated areas in helical head CT in three ... Witryna1 mar 2024 · In addition, an organ-based tube current modulation (TCM) technique has been implemented in CT scanners to reduce the dose to radiosensitive organs such as the breast, thyroid, and eye lens [11,24,25]. Dixon MT et al. [26] reported that TCM could reduce the CTDI vol value by approximately 20 % in a phantom study. does citibank report authorized users

Assessment of subjective image quality, contrast to noise ratio and ...

Organ-based tube current modulation and bismuth eye shielding …

Witryna3 wrz 2024 · The CT gantry tilt method, bismuth shielding, and organ-based tube current modulation (OB-TCM) (11, 17–19) are the conventional methods of reducing the lens dose in head CT imaging. OB-TCM is a mechanism that uses CT automatic exposure control (CT-AEC) to reduce the exposure dose to the front side of the … Witryna15 lip 2024 · A newer technique is organ-based tube current modulation (OBTCM), which minimizes radiation exposure to superficial radiosensitive organs such as the … ez-link officeWitryna8 maj 2016 · Many studies have considered organ-based tube current modulation, both in comparison to breast shielding and general scanning. Matsubara et al. 13 observe that breast dose can be … ezlinks point of sale manual

"Witryna7 cze 2016 · Wang et al. showed that organ-based tube current modulation can achieve the same dose reduction as bismuth shielding without introducing artefacts, affecting the CT number accuracy and increasing image noise. A useful application connected with CARE Dose 4D is the Siemens CARE Profile, which visualises the … " - Organ-based tube current modulation

Organ-based tube current modulation

Witryna3 lis 2024 · In case your scanner doesn’t provide the possibility of gantry tilting (e.g., Dual Source Scanner) it is recommendable to use organ-based tube current modulation (X-Care) or bismuth shields. Further it is desirable to have a low-dose protocol for patients undergoing examination for evaluation and follow-up of the size of cerebrospinal fluid ... Witryna381 Dixon et al.: Organ dose modulation in CT 381 Journal of Applied Clinical Medical Physics, Vol. 17, No. 3, 2016. A contemporary solution offered by some CT manufacturers is to reduce the dose to radio - sensitive anterior organs by reducing the tube current when the X-ray tube is in the anterior position.

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Witryna14 wrz 2024 · Using ImPACT MC software, Monte Carlo simulations of OEMON and OEMOFF were run on 8 cases involving fetal CT scans. We confirmed that the organ-effective modulation X-ray output modulation angle was 160°; the X-ray output modulation rate increased with increasing tube current; and no modulation … Witryna12 lis 2015 · Objectives Organ-based tube current modulation aims to reduce exposure to radiosensitive organs like the breasts by considering their anatomical …

Witryna15 lip 2024 · The use of organ-based tube current modulation resulted in an approximately 30% decrease in lens dose. However, image noise increased as much as 30% in the posterior and central parts of the brain ... Witryna24 mar 2024 · A new organ-based tube current modulation (NOB-TCM) method was designed with the intent to decrease tube current by 30% over a prescribed 90° …

WitrynaPurpose: The purpose of this work was to evaluate dose performance and image quality in thoracic CT using three techniques to reduce dose to the breast: bismuth shielding, … Witryna1 gru 2024 · Request PDF On Dec 1, 2024, T. Kaasalainen and others published The impact of patient off-centring on organ-based tube current modulation in chest CT: a phantom study with MOSFET dosimeters ...

WitrynaObjectives: To investigate the effect of an organ-based tube current modulation (OTCM) technique on organ absorbed dose and assess image quality in pediatric CT …

WitrynaObjectives: Organ-based tube current modulation aims to reduce exposure to radiosensitive organs like the breasts by considering their anatomical location and altering tube current during rotation. Former phantom studies demonstrated a dose … ez link or singapore tourist passWitryna11 kwi 2024 · The mean effective doses were 13.44 ± 4.05 mSv and 6.07 ± 3.40 mSv, respectively, and the mean SSDEs were 13.84 ± 2.94 mGy and 5.69 ± 2.27 mGy, respectively. The high-spike CT protocol without ECG monitoring reduced the radiation exposure by 55% compared to the protocol with ECG monitoring (from 13.44 mSv to … does citi charge foreign transaction feesWitrynaObjective: The purpose of this study was to assess the difference in absorbed organ dose and image quality for MDCT neck protocols using automatic tube current … does citibank offer personal loansWitryna2 lis 2024 · This study aimed to determine organ doses based on Monte Carlo (MC) simulations for individual paediatric patients undergoing chest–abdomen–pelvis computed tomography (CT) examinations and to evaluate correlations of organ doses with dose metrics. ... in tube current modulation (TCM) for CT examinations, the … does citibank offer prepaid cardsWitrynaPurpose: Organ-based tube current modulation (OB-TCM) techniques, which are provided by three vendors, reduces the radiation dose to the lens of the eyes by … does citi bank sell foreign currencyWitryna15 lis 2011 · @article{osti_22098670, title = {Radiation dose reduction to the breast in thoracic CT: Comparison of bismuth shielding, organ-based tube current modulation, and use of a globally decreased tube current}, author = {Jia, Wang and Xinhui, Duan and Christner, Jodie A. and Shuai, Leng and Lifeng, Yu and McCollough, Cynthia H.}, … ez link thermoWitryna5 lip 2024 · Objectives To assess the impact of patient off-centering on organ dose and image noise for head and thoracoabdominal CT in a pediatric phantom. Methods An anthropomorphic phantom simulating a 5-year-old child was used. Semiconductor dosimeters were placed in various cranial and thoracoabdominal organs. Head and … does citi card offer extended warranty