A novel method was presented for the effective dose (ED) measurement with metal-oxide-semiconductor field-effect transistor (MOSFET) detectors in dual-energy (DE) dual-source (DS) computed tomography (CT) scanner. This study demonstrated that the mean energy of the combined spectrum in dual-source computed tomography can be used to measure the ED. For validation, the MOSFET dose at the centre c...

This study investigated the relationship between measured and console volume computed tomography dose index (CTDIvol) in multislice CT scanners. The CTDI values were determined from kerma length product using pencil ionization chamber inserted holes of standard phantoms with diameters 16 32 cm, which respectively mimic adult head body procedures recommended by International Electro-technical Co...

Latar Belakang: Pesawat CT Scan single slice Merk SIEMENS/Dura 302 MV di unit Radiologi Rumah Sakit Umum Semara Ratih Kabupaten Tabanan Bali terpasang pada bulan Nopember 2020 merupakan alat second hand dengan tahun produksi 2012. Pelaksanaan kendali dilakukan saat penerimaan (acceptance test) meliputi pengujian terhadap indeks dosis (CTDI) untuk kepala, (CTDI badan, CT-Number udara, kesesuaian...

background: with the introduction of computed tomography in diagnostic radiology a new and fundamentally different imaging modality has become available. meanwhile, it is clear that the absorbed doses by the patients during ct were relatively high in comparison with those of other diagnostic radiology techniques. the aim of this survey was to determine the average absorbed dose in yazd province...

The Tabbed Document Interface (“TDI”) of today’s web browsers is widely considered to be a usability improvement over the previously predominate Single Document Interface (“SDI”). TDI styled interfaces however, especially in mashups or other overlays of different information sets, suffer from a key usability limitation: they cannot show two or more tabbed documents simultaneously. Users are lef...

BACKGROUND Medical X-rays are the largest man-made source of public exposure to ionizing radiation. While the benefits of Computed Tomography (CT) are well known in accurate diagnosis, those benefits are not risk-free. CT is a device with higher patient dose in comparison with other conventional radiation procedures. OBJECTIVE This study is aimed at evaluating radiation dose to patients from ...

Radiation dose in x-ray computed tomography (CT) has become a topic of high interest due to the increasing numbers of CT examinations performed worldwide. This review aims to present an overview of current concepts for both scanner output metrics and for patient dosimetry and will comment on their strengths and weaknesses. Controversial issues such as the appropriateness of the CT dose index (C...

AIM The authors evaluated radiation and skin doses absorbed by the eye lens, as well as the parotid and thyroid glands, during a low dose maxillary spiral computed tomography (CT). METHODS Three spiral CTs were carried out, one after the other, changing from time to time MAS, pitch factor, Kv and consequently, CTDI/Vol, until the minimum values detectable by the equipment were reached (MAS 28...

Computed tomography (CT) images contribute to high-quality medical diagnosis, but radiation dose can be quite high, requiring accurate assessment. CT index (CTDI) was developed for dosimetric purposes, scanners operated exclusively in axial mode. Nowadays, CTDI underestimate patient helical exams. AAPM report TG111 (2010) suggested a new metric which the patient's is obtained from profiles cons...