CT Dose Index Volume (CTDIvol) The CTDIvol can be calculated as: CTDIvol = [ (N x T)/I] x CTDIw where CTDIw = weighted or average CTDI given across the field of view N = number of simultaneous axial scans er x-ray source rotation T = thickness of one axial scan (mm) I = table increment per axial scan (mm)

CTDIvol: 5.4 mGy: DLP: 74.9 mGy•cm: Effective Dose* 1.05 mSv *AAPM Report 96, k-factor 0.014. Cardiac TAVI planning Aquilion ONE / GENESIS SP. 83-year-old female

två CT-skanningar i hjärnan som ger en total röntgendos (CTDIvol) 10 på cirka 80 mGy. Deltagarna transporteras sedan tillbaka till Baycrest Health Sciences. mGy x cm². Gesamt CTDIvol.

35 : 25 . 4 . Default Siemens Protocol . Standard CTDIvol / [mGy]* Put your current values 2. Weighted CTDI (CTDI w).

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The technical parameters obtained were kVp, mA, scan range (cm), computed tomography dose index (CTDIvol), display field of view (DFOV) and dose length product (DLP). Effective dose (ED), defined as the product of DLP by an ED normalized weighting factor k (mSv.mGy-1.cm −1) ( 8 ) was also obtained.

Distribution of CT dose index (CTDIvol), dose-length product (DLP) and effective dose (ED) were extracted from the data for single-phasic and multiphasic examinations. Results: The institutional DRL for our CT units were established as mean (50th percentile) of CTDIvol (mGy), DLP (mGy.cm) and ED (mSv) for single and multiphasic studies using the dose-tracking software. 2020-09-01 The weighted CTDI was 50.0 ± 14.6 mGy (dose range, 21.0–130 mGy) in the United Kingdom as reported by Shrimpton et al, 25 while the average CTDIvols were 72.2 mGy for adults and 42.0 mGy for 5- to 7-year-old children in Australia, according to Moss and McLean. 26 Therefore, the results of the current study can be adapted to many conditions.

2017-09-19

Adult Head Scan. Pediatric Body. CTDI Dose Distributions by Year.

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23.0.

(mSv).
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Comparison DRLs [CTDIvol (mGy) and DLP (mGy cm)] for other large European surveys UK 2003 [14] Norway 2009 [26] Switzerland 2010 [21] Germany 2010 [27] Exam CTDIvol DLP CTDIvol DLP CTDIvol DLP CTDIvol DLP Head 100/65 930 75 1000 65 1000 65 950 Sinuses — — — — 25 350 9 100 Cervical spine — — — — 30 600 — — Chest (and liver) 13(14) 580 15 400 10 400 12 400 HRCT 7 170 35 280

◇ Indice de Dose de Scanographie Pondéré (IDPS) ou. Computed Tomographic Dose Index (CTDI); unité: mGy. Avec : IDSV = CTDIvol = indice de dose scanographique volumique en mGy. L = longueur du volume irradié (≠ volume exploré) en cm.

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For most standard scanning protocols, CTDIw is in the range 10–40 mGy (Table 7.3). Dividing CTDIw by pitch (beam pitch in the case of multislice scanners)

AAPM 2011 Summit on CT Dose CTDI vol and DLP CTDIvol Notification Value (mGy) Adult Head 80 Adult Torso 50 Pediatric Head <2 years old 2 – 5 years old 50 60 Pediatric Torso <10 years old (16-cm phantom; GE, Hitachi, Toshiba) <10 years old (32-cm phantom; Siemens, Philips) 25 10 Brain Perfusion (exam … The total CTDIvol values reported by Leng et al. were a mean of 515 mGy in a smaller sample size which were higher than both our full and reduced dose groups (349 and 202 mGy, respectively) .