2025年2月12日 · Now that both medium and large phantoms are approved for accreditation of MR scanners in the modular Magnetic Resonance Accreditation Program (MRAP), in general sites must submit phantom images acquired using a head coil that is routinely used for clinical brain imaging on the scanner and must use the largest phantom that fits inside that head c...

acr体模是应用最广泛的一种第三方mri体模，由于其相对的权威性和通用性，大部分医院的mr-sim或者普通诊断mr都采购了acr的这套体模。 ACR也专门出了MR的验收及质控报告，操作手册，如何进行质控扫描和质控分析，比较详细。

4 天之前 · An ACR phantom (Gammex 464) must be used to accredit all units used to produce diagnostic clinical images for patients at the facility. A complete set of phantom images—along with dose measurements taken with the appropriate dose phantoms—from every CT unit must be submitted. Using the Gammex 464 phantom and Computed Tomography Dose Index ...

2025年2月11日 · For cameras that are used to perform planar and SPECT imaging studies, an ACR-approved phantom should be used for evaluating planar and tomographic image quality. The phantom is a cylinder with an internal height of 18.6 cm and internal diameter of 20.3 cm (flangeless phantom).

2024年11月15日 · The ACR requires semiannual testing and strongly recommends quarterly testing of each PET system with an appropriate ACR-approved PET phantom such as described here, in addition to other tests recommended by the vendor.

2024年11月22日 · Two types of phantoms are available: the small ACR Mammography Phantom and the ACR Digital Mammography Phantom. Both simulate a 4.2 cm compressed breast of average density and have a wax insert containing fibers, specks and masses. The facility must purchase the phantom directly from the manufacturer.

This document contains phantom specifications and materials and a brief description of image analysis. For a more complete description of the ACR MRI Accreditation Phantom, you may order the publication, Phantom Test Guidance for the ACR MRI Accreditation Program, from the American College of Radiology. PHANTOM SPECIFICATIONS

4 天之前 · The ACR strongly recommends using the services of a qualified medical physicist for the image quality control portion of your phantom submission. After your new or renewal application is processed, an online testing packet will be activated which will contain all clinical and phantom data forms required for accreditation review.

Effective Jan. 1, 2024, the mean background criteria for PET phantoms will change to 0.90-1.10 for SUV measurements. The aim for this update is to reduce the variability tolerance of the background SUV to +/- 10% from the previous +/- 15%. This change helps to improve the accuracy of scanner calibration and SUV measurements.

The ACR phantom is approved by the American College of Radiology for the ACR accreditation program. The large MRI phantom is used for comprehensive evaluation of critical imaging parameters of magnetic resonance imaging (MRI) in a time efficient manner.