EFOMP’s protocol quality controls in PET/CT and PET/MR

Matheoud, Roberta; Boellaard, Ronald; Pike, Lucy; Ptáček, Jaroslav; Reynés-Llompart, Gabriel; Soret, Marine; Vandenberghe, Stefaan; Zorz, Alessandra; Julyan, P. J.; Rausch, Ivo; Sattler, Bernhard; Manuel, Sanchez-Garcia; Tosi, Giovanni; Dalianis, Kostantinos; Almeida, Pedro; Fabbri, C; Gawel, Joanna; Hadjitheodorou, Panayiotis; Kotzasarlidou, Maria; Lima, Thiago Viana Miranda; O’Doherty, Jim; Skovorodko, Kirill; Sutov, Dmitri; Taher, Ahmed; Valenti, Marco; Vanzi, E.

doi:10.1016/j.ejmp.2022.11.010

Cited by 5 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These procedures also place an economic burden on the facility and delays in utilizing the PET-CT clinical scan equipment. 1 16 22 23 24 27 28 Dealing and handling of radioactivity, either for QC or for clinical scans in nuclear medicine, lead to radiation exposure of the operating radiographer or technologist. Performing daily and weekly QC is one of the unavoidable situations where the operator needs to hold the phantom source filled with radioactivity by hand and position it on the PET scanner.…”

Section: Discussionmentioning

confidence: 99%

“…Several international bodies and manufacturers have published QC guidelines and recommendations for a PET imaging modality to ensure adequate performance of the systems to achieve accurate qualitative and quantitative outcomes in clinical practice, as well as the frequency of these tests. 1 16 22 23 24 27 28 QC as a segment of a QA program aims to monitor that a system is performing as expected. In order for the PET part to function properly, the detectors and measuring electronics must function properly.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Operational and Performance Experience with uMI550 Digital PET-CT during Routine Quality Control Procedures

Singh,

Mohan,

Kaushik

2023

World J Nucl Med

View full text Add to dashboard Cite

Introduction The quality control (QC) procedures for positron emission tomography (PET) scanners are covered by National Electrical Manufacturers Association and International Electrotechnical Commission. QC must be carried out at regular intervals according to the specifications of the scanner manufacturer. Daily and weekly QC plays a valuable role in monitoring positron emission tomography (PET) scanner performance changes. This study shares operational and performance experience of QC procedures that do not require a radioactive Ge-68 source to perform daily QC and experience with fluorodeoxyglucose F18 (18F-FDG) as a substitute for germanium-68/sodium-22 (Ge-68/Na-22) source for weekly QC. Method This study was performed on an uMI550 digital positron emission tomography-computed tomography (PET-CT) scanner. In this scanner daily QC checks system temperature and humidity, system count rate, data link status, and voltage. QC was performed at the console control, the position of the scanner table was in the home position pulled out from the gantry, and the room was closed during the quick QC. Weekly full QC check items include look-up table drift, energy drift, time-of-flight status, C-map status, temperature and humidity, and voltage. Weekly full QC was performed with a 18F-FDG source in a rod phantom source. Results Over 200 daily QC tests without a radioactive source Ge-68 phantom and 50 full weekly QC tests using a 18F-FDG rod phantom were performed with this scanner according to the manufacturer's instructions and a test report was generated. No daily QC errors or warnings were observed during this period. Conclusion The new approach for the daily PET QC does not expose operators to radiation. This translates into commercial and operational merits with consistent performance and results. Implications for Practice Reduction in radiation exposure to operating staff during QC procedure in PET-CT scanner.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Operational and Performance Experience with uMI550 Digital PET-CT during Routine Quality Control Procedures

Singh,

Mohan,

Kaushik

2023

World J Nucl Med

View full text Add to dashboard Cite

show abstract

“…The C i was determined from spherical volumes of interest (VOIs) with diameters matching the respective sphere size (10, 13, 17, 22, 28 and 37 mm) of the IEC phantom spheres, and the C BG was determined from a box-shaped VOI of 150 mm × 15 mm × 170 mm. The image noise was assessed using the coefficient of variation (CV), a widely used parameter for comparison of the noise performance of PET scanners [20,21]. The CV was calculated according to the following equation:…”

Section: Iec Phantom Measurements and Analysis Of Iq Contrast Recover...mentioning

confidence: 99%

Optimization of Y-90 Radioembolization Imaging for Post-Treatment Dosimetry on a Long Axial Field-of-View PET/CT Scanner

Linder,

Lan,

Trautwein

et al. 2023

Diagnostics

View full text Add to dashboard Cite

Background: PET imaging after yttrium-90 (Y-90) radioembolization is challenging because of the low positron fraction of Y-90 (32 × 10−6). The resulting low number of events can be compensated by the high sensitivity of long axial field-of-view (LAFOV) PET/CT scanners. Nevertheless, the reduced event statistics require optimization of the imaging protocol to achieve high image quality (IQ) and quantification accuracy sufficient for post-treatment dosimetry. Methods: Two phantoms (NEMA IEC and AbdoMan phantoms, mimicking human liver) filled with Y-90 and a 4:1 sphere (tumor)-to-background ratio were scanned for 24 h with the Biograph Vision Quadra (Siemens Healthineers). Eight patients were scanned after Y-90 radioembolization (1.3–4.7 GBq) using the optimized protocol (obtained by phantom studies). The IQ, contrast recovery coefficients (CRCs) and noise were evaluated for their limited and full acceptance angles, different rebinned scan durations, numbers of iterations and post-reconstruction filters. The s-value-based absorbed doses were calculated to assess their suitability for dosimetry. Results: The phantom studies demonstrate that two iterations, five subsets and a 4 mm Gaussian filter provide a reasonable compromise between a high CRC and low noise. For a 20 min scan duration, an adequate CRC of 56% (vs. 24 h: 62%, 20 mm sphere) was obtained, and the noise was reduced by a factor of 1.4, from 40% to 29%, using the full acceptance angle. The patient scan results were consistent with those from the phantom studies, and the impacts on the absorbed doses were negligible for all of the studied parameter sets, as the maximum percentage difference was −3.89%. Conclusions: With 2i5s, a 4 mm filter and a scan duration of 20 min, IQ and quantification accuracy that are suitable for post-treatment dosimetry of Y-90 radioembolization can be achieved.

show abstract

Quality requirements for MRI simulation in cranial stereotactic radiotherapy: a guideline from the German Taskforce “Imaging in Stereotactic Radiotherapy”

Putz,

Bock,

Schmitt

et al. 2024

Strahlenther Onkol

View full text Add to dashboard Cite

Accurate Magnetic Resonance Imaging (MRI) simulation is fundamental for high-precision stereotactic radiosurgery and fractionated stereotactic radiotherapy, collectively referred to as stereotactic radiotherapy (SRT), to deliver doses of high biological effectiveness to well-defined cranial targets. Multiple MRI hardware related factors as well as scanner configuration and sequence protocol parameters can affect the imaging accuracy and need to be optimized for the special purpose of radiotherapy treatment planning. MRI simulation for SRT is possible for different organizational environments including patient referral for imaging as well as dedicated MRI simulation in the radiotherapy department but require radiotherapy-optimized MRI protocols and defined quality standards to ensure geometrically accurate images that form an impeccable foundation for treatment planning. For this guideline, an interdisciplinary panel including experts from the working group for radiosurgery and stereotactic radiotherapy of the German Society for Radiation Oncology (DEGRO), the working group for physics and technology in stereotactic radiotherapy of the German Society for Medical Physics (DGMP), the German Society of Neurosurgery (DGNC), the German Society of Neuroradiology (DGNR) and the German Chapter of the International Society for Magnetic Resonance in Medicine (DS-ISMRM) have defined minimum MRI quality requirements as well as advanced MRI simulation options for cranial SRT.

show abstract

EFOMP’s protocol quality controls in PET/CT and PET/MR

Cited by 5 publications

References 15 publications

Operational and Performance Experience with uMI550 Digital PET-CT during Routine Quality Control Procedures

Operational and Performance Experience with uMI550 Digital PET-CT during Routine Quality Control Procedures

Optimization of Y-90 Radioembolization Imaging for Post-Treatment Dosimetry on a Long Axial Field-of-View PET/CT Scanner

Quality requirements for MRI simulation in cranial stereotactic radiotherapy: a guideline from the German Taskforce “Imaging in Stereotactic Radiotherapy”

Contact Info

Product

Resources

About