Results 81 to 90 of about 5,341 (200)

Appraisal of radiation dose with 64-slice computed tomography perfusion in lung cancer patients with special reference to SSDE: An initial experience in a tertiary care hospital

Indian Journal of Radiology and Imaging, 2017
Context: Computed tomography perfusion (CTP) is an important functional tool for lung cancer. It is expected to deliver high radiation dose, making its accurate estimation important. Size-specific dose estimate (SSDE) is a new dose metric, which includes
Shuchi Bhatt, Ajai K Srivastava, Neha Meena, Shweta Thakur   +3 more
doaj   +1 more source

Establishment of baseline size-specific dose estimate (SSDE) for paediatric head computed tomography (CT) examinations

The Egyptian Journal of Radiology and Nuclear Medicine
Background In recent times, size-specific dose estimate (SSDE) has been the ideal metric for accurate estimation of individual patient doses in computed tomography (CT) examinations.
Hamza Sulemana, Abdul Nashirudeen Mumuni, Izre-deen Osman Mohammed Abubakari   +2 more
doaj   +1 more source

Patient Dose Estimation Using CT-Expo Software at Two Hospitals in North-Central Nigeria

Southern Clinics of Istanbul Eurasia, 2018
INTRODUCTION[|]Simulation software has aided the estimation of organ dose from computed tomography (CT) examinations. The aim of this study was to use the CT-Expo (SASCRAD, Fritz-Reuter-Weg, Buchholz, Germany) software to determine volume CT dose index ...
Mary-ann Etim Ekpo, Rachel Ibhade Obed, Akintayo Daniel Omojola   +2 more
doaj   +1 more source

EVALUASI DOSIS COMPUTED TOMOGRAPHY DOSE INDEX VOLUME (CTDIVOL) DAN DOSE LENGTH PRODUCT (DLP) PADA PEMERIKSAAN MULTISLICE COMPUTERIZED TOMOGRAPHY (MSCT) THORAX DEWASA DI RSU X DENPASAR

, 2023
Dosis radiasi CT Scan menyumbang 70% Total dosis yang diterima dari pencitraan medis, tinggi atau rendahnya dosis radiasi yang diterima dapat meningkatkan risiko kanker. Untuk memastikan dosis yang diterima sebanding dengan tujuan medisnya, dosis radiasi
Lobang, Valey Jeanet, Anak Agung Aris Diartama, Valey Jeanet Lobang, Diartama, Anak Agung Aris, Pratista, I Made Sayang, I Wayan Angga Wirajaya, Wirajaya, I Wayan Angga, I Made Sayang Pratista   +7 more
core   +2 more sources

Dose Assessment in Multidetector Computed Tomography (CT) of Polymethylmethacrylate (PMMA) Phantom Using American Association of Physicists in Medicine-Task Group Report No. 111 (AAPM-TG111)

مجله دانشکده پزشکی اصفهان, 2017
Background: Computed tomography (CT) is one of the most used imaging modalities and is one of the main sources of population exposure. Recently, patient doses are estimated through CT dose index (CTDI) phantoms as a reference to calculate CTDI volume ...
Soheila Sharifian, Daryoush Shahbazi-Gahrouei   +1 more
doaj  

Analisa Perubahan kV terhadap CTDIvol Dan DLP Pada CT-Scan Kepala dengan Water Phantom

Bali Health Journal
Latar belakang : Sumber radiasi pada CT scan adalah sinar-X. Kilovoltage (kV) berperan dalam menentukan tegangan tabung antara katoda dan anoda yang menentukan daya tembus sinar-X yang dihasilkan. Semakin besar kV, semakin besar nilai CTDIVol, DLP dan dosis efektif.
Anak Agung Aris Diartama, I Putu Pande Wahyu Gitawiarsa, Anak Agung Bagus Widyadana Putra, I Made Wijaya   +3 more
openaire   +1 more source

The Effect of X-ray Energy on Dosimeter Measurements of CT Radiation Dose

CT Lilun yu yingyong yanjiu
Objective: The point dose and volume CT dosimetry index (CTDIvol) at different X-ray energies were measured using the Raysafe-X2 air ionization chamber (referred to as “RX2”), the Piranha CT dose profiler semiconductor ionization chamber (referred to as “
Lexin PENG, Zixuan MA, Yantao NIU, Yongxian ZHANG, Lingjing HU, Ning¹ WU, Xing GAO, Dandan LIU   +7 more
doaj   +1 more source

TU‐A‐201B‐04: Estimating Dose to Eye Lens and Skin from Radiation Dose from CT Brain Perfusion Examinations: Comparison to CTDIvol Values.

, 2010
Purpose: In brain perfusion studies, the patient's head is scanned repeatedly at one location over a short period of time to monitor contrast wash in and wash out.
Zhang, D., Demarco, J., Zankl, M., Khatonabadi, M., Mcnitt‐gray, M., Cagnon, C., Turner, A.   +6 more
core   +1 more source

Radiation exposure of ovarian cancer patients : contribution of CT examinations performed on different MDCT (16 and 64 slices) scanners and image quality evaluation an observational study [PDF]

, 2015
The objective of this study is to compare radiation doses given to ovarian cancer patients by different computed tomographies (CTs) and to evaluate association between doses and subjective and objective image quality.CT examinations included were ...
BRAMBILLA, SARAH, S. Rizzo, D. Origgi, N. Colombo, F. De Maria, M. Bellomi, R. Foà, S. Raimondi   +7 more
core   +1 more source

Scatterplot of objective image evaluation.

, 2023
Shown are mean cortical values (A), CNR (B), standard deviation of background noise (C) and CNRD (D). Symbols represent the mean and error bars the standard deviation of triplicate ROI measurements. The symbol of each protocol is color coded according to
Carsten Hackenbroch (9452471), Meinrad Beer (387056), Simone Schüle (10018355), Kai Johannes Lorenz (14341213), Joachim Rudolf Balthasar Strobel (14341210)   +4 more
core   +1 more source