Increasing organ dose accuracy through voxel phantom organ matching with individual patient anatomy

2019 ◽  
Vol 159 ◽  
pp. 35-46
Author(s):  
Jorge Borbinha ◽  
Salvatore Di Maria ◽  
Paula Madeira ◽  
Ana Belchior ◽  
Mariana Baptista ◽  
...  
Keyword(s):  
Organ Dose ◽  
Voxel Phantom ◽  
Dose Accuracy

Organ dose conversion coefficients for external photon irradiation using the Chinese voxel phantom (CVP)

2009 ◽  
Vol 135 (1) ◽  
pp. 33-42 ◽  
Author(s):  
J. Li ◽  
R. Qiu ◽  
Z. Zhang ◽  
L. Liu ◽  
Z. Zeng ◽  
...  
Keyword(s):  
Organ Dose ◽  
Voxel Phantom ◽  
Photon Irradiation ◽  
Conversion Coefficients

Dosimetric Impact of a New Computational Voxel Phantom Series for the Japanese Atomic Bomb Survivors: Methodological Improvements and Organ Dose Response Functions

2020 ◽  
Vol 194 (4) ◽  
Author(s):  
Tatsuhiko Sato ◽  
Sachiyo Funamoto ◽  
Colin Paulbeck ◽  
Keith Griffin ◽  
Choonsik Lee ◽  
...  
Keyword(s):  
Dose Response ◽  
Atomic Bomb ◽  
Organ Dose ◽  
Response Functions ◽  
Voxel Phantom ◽  
Atomic Bomb Survivors

EVALUASI RASIONALITAS PENGGUNAAN DAN PEMBERIAN OBAT PADA PASIEN HIPERTENSI GERIATRI DI PUSKESMAS TAJINAN PERIODE JANUARI – DESEMBER 2019

2020 ◽  
Vol 5 (2) ◽  
pp. 268-277
Author(s):  
Luluk Anisyah ◽  
◽  
Wibowo Wibowo
Keyword(s):  
Correlation Analysis ◽  
Medical Record ◽  
Significant Relationship ◽  
Antihypertensive Drugs ◽  
Hypertension Management ◽  
Hypertensive Patients ◽  
Primary Health ◽  
Data Collection Sheet ◽  
Dose Accuracy ◽  
Accuracy Data

Increasing the number of elderly causes an increase in health problems one of which is associated with hypertension which can cause complications and death. The purpose of this study was to determine the description and accuracy of the use of antihypertensive drugs in geriatric patients who were diagnosed with hypertension at the Tajinan Primary Health in Malang in the period January-December 2019. This study was an observational or non-experimental study conducted using retrospective medical record data. The measuring instrument used was the data collection sheet from the medical record, the Consensus for Hypertension Management 2019 to see the accuracy of indications, patient accuracy, drug accuracy, and dose accuracy. Data analysis using Correlation Test. The results of the correlation analysis showed that the resulting Standardize estimates were 0.002 (p <0.05) which showed that there was a significant relationship between sexes with the occurrence of hypertension. The results of the correlation analysis showed that the resulting Standardize estimates were 0.001 (p <0.05) which means that there was a significant relationship between the accuracy of the types of antihypertensive drugs used in hypertensive patients. The conclusion is that the rationality evaluation of the use and administration of drugs in hypertensive patients at the Tajinan Primary Health in Malang based on the 2019 Hypertension Management Consensus guidelines shows the accuracy both in terms of indication, drug, patient and dose.

scholarly journals Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study

2021 ◽  
Vol 11 (5) ◽  
pp. 2047
Author(s):  
Nor Azura Muhammad ◽  
Zunaide Kayun ◽  
Hasyma Abu Hassan ◽  
Jeannie Hsiu Ding Wong ◽  
Kwan Hoong Ng ◽  
...  
Keyword(s):  
Image Quality ◽  
Multidetector Ct ◽  
Organ Dose ◽  
Quality Metrics ◽  
Ct Scanner ◽  
Image Quality Metrics ◽  
Tube Current ◽  
Significant Difference ◽  
Noise Ratio ◽  
The Impact

The aim of this study is to investigate the impact of CT acquisition parameter setting on organ dose and its influence on image quality metrics in pediatric phantom during CT examination. The study was performed on 64-slice multidetector CT scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CT CAP protocols (P1–P9). Tube potential for P1, P2, and P3 protocols were fixed at 100 kVp while P4, P5, and P6 were fixed at 80 kVp with used of various reference noise values. P7, P8, and P9 were the modification of P1 with changes on slice collimation, pitch factor, and tube current modulation (TCM), respectively. TLD-100 chips were inserted into the phantom slab number 7, 9, 10, 12, 13, and 14 to represent thyroid, lung, liver, stomach, gonads, and skin, respectively. The image quality metrics, signal to noise ratio (SNR) and contrast to noise ratio (CNR) values were obtained from the CT console. As a result, this study indicates a potential reduction in the absorbed dose up to 20% to 50% along with reducing tube voltage, tube current, and increasing the slice collimation. There is no significant difference (p > 0.05) observed between the protocols and image metrics.

Organ Dose Estimates for Hyperthyroid Patients Treated with 131I: An Update of the Thyrotoxicosis Follow-Up Study

2015 ◽  
Vol 184 (6) ◽  
pp. 595 ◽  
Author(s):  
Dunstana R. Melo ◽  
Aaron B. Brill ◽  
Pat Zanzonico ◽  
Paolo Vicini ◽  
Brian Moroz ◽  
...  
Keyword(s):  
Organ Dose ◽  
Follow Up Study ◽  
Hyperthyroid Patients
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