Please see the ACR Manual on Contrast Media for additional information [19]. FDG-PET/CT The sensitivity and specificity of PET using the tracer fluorine-18-2-fluoro-2-deoxy-D-glucose (FDG)/CT in evaluating suspected adnexal masses in asymptomatic females are only 58% and 76%, respectively....
Channelized hotelling observer‐based low‐contrast detectability on the ACR CT accreditation phantom: Part II. Repeatability studydoi:10.1002/mp.16961Fan, MingdongZhou, ZhongxingMcCollough, CynthiaYu, LifengMedical Physics
In contrast, subunit B does not interact with the sgRNA but engages ∼5% of its surface area to cover ∼530 Å2 of St1Cas9 only. Altogether, binding of the AcrIIA6 dimer buries an area of ∼2,270 Å2 on St1Cas9 RNP upon complex formation, which contributes to the strong ...
The purpose of this work was to develop an imaging QA program for CT and CBCT units in our department based on the ACR CT accreditation phantom (model 464, Gammex鈥怰MI). It has four testing modules permitting one to test CT number accuracy, slice width, low contrast resolution, image ...
The center coordinate of the low-contrast object was determined from the maximum value of the profile. The CNR was calculated based on the average CT number and noise within the ROI in the low-contrast object and the ROI in the background, i.e., at the center of the phantom. The ...
The purpose of this work is to evaluate the low-contrast detectability on a clinical whole-body photon-counting-detector (PCD)-CT scanner and compare it with an energy-integrating-detector (EID) CT scanner, using an efficient Channelized Hotelling observer (CHO)-based method previously developed ...
coronary CT protocol to image more of the chest (either from the aortic arch to the base or the entire chest) and using additional contrast to maintain pulmonary artery enhancement, resulting in reported increases in radiation dose from 25% to 150% and in contrast volume from 20% to 50%. ...
Prospective evaluation of carotid artery stenosis: elliptic centric contrast-enhanced MR angiography and spiral CT angiography compared with digital subtraction angiography AJNR Am J Neuroradiol, 24 (2003), pp. 1012-1019 View in ScopusGoogle Scholar 185 L. Remonda, P. Senn, A. Barth, et al. C...
CT venography (CTV) represents an alternative diagnostic study for many peripheral vascular interventions. However, it carries practical and logistical limitations in dialysis access imaging. There is no relevant literature to support the use of CTV with intravenous (IV) contrast in the evaluation of ...
MRA chest without and with IV contrast May Be Appropriate (Disagreement) O CT chest with IV contrast May Be Appropriate ☢☢☢ CT chest without and with IV contrast May Be Appropriate (Disagreement) ☢☢☢ CTA chest with IV contrast May Be Appropriate (Disagreement) ☢☢☢ US ...