Mono-static CW Doppler Radar for Quantifying Respiratory Motion during PET/CT scans

In einer multizentrischen Studie wurde untersucht, ob mithilfe eines FDG-PET-CT-Scans die Entscheidung zum Beenden der Therapie mit Checkpoint-Inhibitoren möglicherweise verbessert werden kann.

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Correction: Rijnsdorp et al. Impact of the Noise Penalty Factor on Quantification in Bayesian Penalized Likelihood (Q.Clear) Reconstructions of 68Ga-PSMA PET/CT Scans. Diagnostics 2021, 11, 847

Diagnostics ◽

10.3390/diagnostics11081371 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1371

Author(s):

Sjoerd Rijnsdorp ◽

Mark J. Roef ◽

Albert J. Arends

Keyword(s):

Penalized Likelihood ◽

Ct Scans ◽

Penalty Factor ◽

Psma Pet ◽

Pet Ct

In the original article [...]

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Benefit of Static FET PET in Pretreated Pediatric Brain Tumor Patients with Equivocal Conventional MRI Results

Klinische Pädiatrie ◽

10.1055/a-1335-4844 ◽

2021 ◽

Author(s):

Frederik Grosse ◽

Florian Wedel ◽

Ulrich-Wilhelm Thomale ◽

Ingo Steffen ◽

Arend Koch ◽

...

Keyword(s):

Brain Tumor ◽

Tumor Tissue ◽

Pediatric Brain Tumor ◽

Ct Scans ◽

Tumor Patients ◽

Fet Pet ◽

Conventional Mri ◽

Pet Ct ◽

Pediatric Brain

Abstract Background MRI has shortcomings in differentiation between tumor tissue and post-therapeutic changes in pretreated brain tumor patients. Patients We assessed 22 static FET-PET/CT-scans of 17 pediatric patients (median age 12 years, range 2–16 years, ependymoma n=4, medulloblastoma n=4, low-grade glioma n=6, high-grade glioma n=3, germ cell tumor n=1, choroid plexus tumor n=1, median follow-up: 112 months) with multimodal treatment. Method FET-PET/CT-scans were analyzed visually by 3 independent nuclear medicine physicians. Additionally quantitative FET-Uptake for each lesion was determined by calculating standardized uptake values (SUVmaxT/SUVmeanB, SUVmeanT/SUVmeanB). Histology or clinical follow-up served as reference. Results Static FET-PET/CT reliably distinguished between tumor tissue and post-therapeutic changes in 16 out of 17 patients. It identified correctly vital tumor tissue in 13 patients and post-therapeutic changes in 3 patients. SUV-based analyses were less sensitive than visual analyses. Except from a choroid plexus carcinoma, all tumor entities showed increased FET-uptake. Discussion Our study comprises a limited number of patients but results corroborate the ability of FET to detect different brain tumor entities in pediatric patients and discriminate between residual/recurrent tumor and post-therapeutic changes. Conclusions We observed a clear benefit from additional static FET-PET/CT-scans when conventional MRI identified equivocal lesions in pretreated pediatric brain tumor patients. These results warrant prospective studies that should include dynamic scans.

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Not All That Shines on a PET Scan Is Cancer: A Silicone-Induced Granuloma Masquerading as Malignancy

Clinics and Practice ◽

10.3390/clinpract11010003 ◽

2020 ◽

Vol 11 (1) ◽

pp. 8-12

Author(s):

Krishna Vedala ◽

Philip Sobash ◽

Deborah Johnson ◽

Krishna Kakkera

Keyword(s):

Pet Scan ◽

Imaging Modalities ◽

Ct Scans ◽

Pet Ct ◽

Suspicious Lesions

PET/CT scans are frequently used in the initial workup of suspicious lesions but not all that lights up on a PET is cancerous. We wish to discuss a case of silicone-induced granuloma mimicking malignancy and the role of other imaging modalities for further workup.

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Non-Hodgkin lymphoma of multiple extranodal involvement seen on MRI, FDG PET–CT scans

Medicine ◽

10.1097/md.0000000000008456 ◽

2017 ◽

Vol 96 (45) ◽

pp. e8456 ◽

Cited By ~ 1

Author(s):

Shan Wang ◽

Meng Meng ◽

Qiuhu Wang ◽

Kai Xu

Keyword(s):

Hodgkin Lymphoma ◽

Fdg Pet ◽

Ct Scans ◽

Extranodal Involvement ◽

Non Hodgkin Lymphoma ◽

Pet Ct ◽

Fdg Pet Ct

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Comparison of standardized uptake values measured on 18F-NaF PET/CT scans using three different tube current intensities

Radiologia Brasileira ◽

10.1590/0100-3984.2014.0034 ◽

2015 ◽

Vol 48 (1) ◽

pp. 17-20 ◽

Cited By ~ 1

Author(s):

Agnes Araujo Valadares ◽

Paulo Schiavom Duarte ◽

Eduardo Bechtloff Woellner ◽

George Barberio Coura-Filho ◽

Marcelo Tatit Sapienza ◽

...

Keyword(s):

Attenuation Correction ◽

Lumbar Vertebra ◽

Ct Scans ◽

Femoral Diaphysis ◽

Standardized Uptake Values ◽

Pet Ct ◽

Tube Current ◽

The Mean ◽

Humeral Diaphysis ◽

Ct Studies

Objective: To analyze standardized uptake values (SUVs) using three different tube current intensities for attenuation correction on 18FNaF PET/CT scans. Materials and Methods: A total of 254 18F-NaF PET/CT studies were analyzed using 10, 20 and 30 mAs. The SUVs were calculated in volumes of interest (VOIs) drawn on three skeletal regions, namely, right proximal humeral diaphysis (RH), right proximal femoral diaphysis (RF), and first lumbar vertebra (LV1) in a total of 712 VOIs. The analyses covered 675 regions classified as normal (236 RH, 232 RF, and 207 LV1). Results: Mean SUV for each skeletal region was 3.8, 5.4 and 14.4 for RH, RF, and LV1, respectively. As the studies were grouped according to mAs value, the mean SUV values were 3.8, 3.9 and 3.7 for 10, 20 and 30 mAs, respectively, in the RH region; 5.4, 5.5 and 5.4 for 10, 20 and 30 mAs, respectively, in the RF region; 13.8, 14.9 and 14.5 for 10, 20 and 30 mAs, respectively, in the LV1 region. Conclusion: The three tube current values yielded similar results for SUV calculation.

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