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2.
Nucl Med Commun ; 42(11): 1277-1284, 2021 Nov 01.
Article in English | MEDLINE | ID: covidwho-1377993

ABSTRACT

OBJECTIVE: To determine temporal changes in PET/CT utilization during the COVID-19 pandemic and examine the impact of epidemiologic, demographic and oncologic factors on PET/CT utilization. METHODS: Clinical PET-CT utilization between 1 January 2020 and 15 June 2020 at a tertiary academic center was assessed using change-point-detection (CPD) analysis. COVID-19 epidemiologic trend was obtained from Connecticut Department of Public Health records. Demographic and oncologic data were gathered from electronic medical records and PET-CT scans by four reviewers in consensus. RESULTS: A total of 1685 cases were reviewed. CPD analysis identified five distinct phases of PET-CT utilization during COVID-19, with a sharp decline and a gradual recovery. There was a 62.5% decline in case volumes at the nadir. These changes correlated with COVID-19 epidemiologic changes in the state of Connecticut, with a negative correlation between COVID-19 cases and PET-CT utilization (τ = -0.54; P value < 0.001). Statistically significant differences in age, race, cancer type and current and prior scan positivity were observed in these five phases. A greater percentage of young patients and minorities were scanned during the pandemic relative to baseline. PET/CT scanning was less impacted for hematologic malignancies than for solid cancers, with less profound decline and better recovery. DISCUSSION: PET-CT cancer imaging was vulnerable to the COVID-19 pandemic at our institution. Epidemiologic, demographic and oncologic factors affected PET-CT utilization.


Subject(s)
COVID-19/epidemiology , Pandemics , Positron Emission Tomography Computed Tomography/statistics & numerical data , Universities , Humans
3.
Eur J Nucl Med Mol Imaging ; 48(1): 269-281, 2021 01.
Article in English | MEDLINE | ID: covidwho-695780

ABSTRACT

PURPOSE: The emergence of the novel SARS-CoV-2 pathogen and lethal COVID-19 disease pandemic poses major diagnostic challenges. The study aims to describe the spectrum and prevalence of thoracic and extrathoracic incidental findings in patients who have undergone 18F-FDG PET/CT during the first 3 weeks of the COVID-19 UK lockdown. METHODS: This is a single-centre retrospective controlled observational study. 18F-FDG PET/CT scans (n = 160) acquired from 23/3/2020 to 9/4/2020 were retrospectively reviewed for incidental findings in the lungs and extrapulmonary sites (heart, nasal sinuses, parotid and salivary glands, colon, large vessels, renal cortex, brain, spleen and testes). A date-matched control group (n = 205) of patients from 2019 was used for comparison. RESULTS: The total prevalence of suspicious findings was 26/160 (16.25%). Fifteen patients presented with incidental findings in the lungs, while eleven patients had only non-pulmonary incidental findings. There was a significant increase in the appearance of incidental 18F-FDG PET/CT findings during the 2nd week (OR = 3.8) and 3rd week (OR = 7.6) in relation to the 1st week. There was a significant increase in the average maximum standardised uptake values (SUVmax) in the parotid/salivary glands of patients scanned during week 2 in relation to week 1 (p = 0.036). There was no significant difference in the prevalence of incidental findings compared to the control group, but the number of pulmonary vs. extrathoracic findings was different between the two populations. CONCLUSION: The study provides a novel base of evidence to identify asymptomatic patients and those without symptoms strongly associated with COVID-19 with incidental 18F-FDG PET/CT findings suspicious of SARS-CoV-2 infection during the initial stages of the pandemic.


Subject(s)
Asymptomatic Infections/epidemiology , COVID-19/epidemiology , Incidental Findings , Positron Emission Tomography Computed Tomography/statistics & numerical data , Quarantine/statistics & numerical data , COVID-19/diagnostic imaging , Female , Fluorodeoxyglucose F18 , Humans , Male , Middle Aged , Radiopharmaceuticals , United Kingdom
4.
J Am Coll Radiol ; 17(9): 1086-1095, 2020 09.
Article in English | MEDLINE | ID: covidwho-680404

ABSTRACT

OBJECTIVE: The coronavirus disease 2019 (COVID-19) pandemic resulted in significant loss of radiologic volume as a result of shelter-at-home mandates and delay of non-time-sensitive imaging studies to preserve capacity for the pandemic. We analyze the volume-related impact of the COVID-19 pandemic on six academic medical systems (AMSs), three in high COVID-19 surge (high-surge) and three in low COVID-19 surge (low-surge) regions, and a large national private practice coalition. We sought to assess adaptations, risks of actions, and lessons learned. METHODS: Percent change of 2020 volume per week was compared with the corresponding 2019 volume calculated for each of the 14 imaging modalities and overall total, outpatient, emergency, and inpatient studies in high-surge AMSs and low-surge AMSs and the practice coalition. RESULTS: Steep examination volume drops occurred during week 11, with slow recovery starting week 17. The lowest total AMS volume drop was 40% compared with the same period the previous year, and the largest was 70%. The greatest decreases were seen with screening mammography and dual-energy x-ray absorptiometry scans, and the smallest decreases were seen with PET/CT, x-ray, and interventional radiology. Inpatient volume was least impacted compared with outpatient or emergency imaging. CONCLUSION: Large percentage drops in volume were seen from weeks 11 through 17, were seen with screening studies, and were larger for the high-surge AMSs than for the low-surge AMSs. The lowest drops in volume were seen with modalities in which delays in imaging had greater perceived adverse consequences.


Subject(s)
Coronavirus Infections/prevention & control , Diagnostic Imaging/statistics & numerical data , Infection Control/organization & administration , Pandemics/prevention & control , Pneumonia, Viral/prevention & control , Positron Emission Tomography Computed Tomography/statistics & numerical data , Radiology/statistics & numerical data , COVID-19 , Coronavirus Infections/epidemiology , Diagnostic Imaging/methods , Female , Forecasting , Humans , Incidence , Learning , Male , Pandemics/statistics & numerical data , Pneumonia, Viral/epidemiology , Radiology/trends , Risk Assessment , United States
5.
Eur J Nucl Med Mol Imaging ; 47(11): 2691-2697, 2020 10.
Article in English | MEDLINE | ID: covidwho-610752

ABSTRACT

PURPOSE: To assess the impact of the Covid-19 pandemic on FDG-PET/CT work volume and to evaluate the occurrence of abnormal imaging findings suspicious or potentially diagnostic for interstitial pneumonia by Covid-19 infection in south Italy. METHODS: We retrospectively reviewed the number and the findings of FDG-PET/CT studies acquired between February and April 2020 during the Covid-19 pandemic at the University of Napoli Federico II. The number and the findings of FDG-PET/CT studies acquired in the corresponding period of 2019 were also assessed for direct comparison. RESULTS: The number of FDG-PET/CT studies performed during the pandemic (n = 299) and in the corresponding period of 2019 (n = 335) were comparable. The percentage of abnormal FDG-PET/CT findings, suspicious for interstitial pneumonia by Covid-19 infection, was significantly higher during the pandemic (9%) compared with that found in the corresponding period of 2019 (4%) (χ2 5.45, P = 0.02). No significant differences were observed in the distribution of Covid-19 reporting and data system (CO-RADS) classification and in the maximum standardized uptake value between the pandemic (2.6 ± 2.2) and the corresponding period of 2019 (3.2 ± 1.4). Of note, patients with abnormal imaging findings during the pandemic time had clinical data and/or laboratory tests negative for Covid-19 infection. CONCLUSION: Despite the restrictive medical measures for the emergency, the number of FDG-PET/CT studies was unchanged during the pandemic compared with the previous year. Our findings also indicate that Covid-19 infection was contained in our series of patients from southern Italy.


Subject(s)
Betacoronavirus , Coronavirus Infections/diagnostic imaging , Pandemics , Pneumonia, Viral/diagnostic imaging , Positron Emission Tomography Computed Tomography , COVID-19 , Carcinoma/complications , Carcinoma/diagnostic imaging , Coronavirus Infections/complications , Fluorine Radioisotopes , Fluorodeoxyglucose F18 , Humans , Italy/epidemiology , Laryngeal Neoplasms/complications , Laryngeal Neoplasms/diagnostic imaging , Pneumonia, Viral/complications , Positron Emission Tomography Computed Tomography/statistics & numerical data , Procedures and Techniques Utilization , Radiopharmaceuticals , Retrospective Studies , SARS-CoV-2 , Thymoma/complications , Thymoma/diagnostic imaging
6.
Rev Esp Med Nucl Imagen Mol (Engl Ed) ; 39(5): 299-302, 2020.
Article in Spanish | MEDLINE | ID: covidwho-599073

ABSTRACT

INTRODUCTION: On January 30, 2020, the World Health Organization (WHO) declared an international emergency due to the pandemic caused by a new coronavirus. There are some oncological indications that have special priority and studies are still being carried out despite the current situation. In these studies we have found suspicious findings of COVID-19 pneumonia in asymptomatic patients. The objective of this work is to assess the incidence of these findings, describe their characteristics and the evolution of suspected patients. MATERIAL AND METHODS: Oncological PET studies carried out in asymptomatic patients between March 18 and April 8, 2020 have been reviewed. Patients who presented findings suggestive of corresponding to an pulmonary infectious process were selected. Clinical findings have been reviewed to confirm or rule out SARS-CoV-2 infection. RESULTS: During the specified period, a total of 129 PET/CT studies were performed. Of these, 11 (8.5%) found suspicious findings of a pulmonary infectious process. These were 8 men and 3 women aged between 30 and 79 years (mean 62.2). CONCLUSIONS: Patients with COVID-19 can present few symptoms of the disease, and in PET/CT studies both presymptomatic and almost asymptomatic patients can be detected, so nuclear medicine physicians should take special attention to the pulmonary evaluation of PET/CT studies.


Subject(s)
Asymptomatic Infections , Betacoronavirus , Coronavirus Infections/diagnostic imaging , Pneumonia, Viral/diagnostic imaging , Positron Emission Tomography Computed Tomography/statistics & numerical data , Adult , Aged , Asymptomatic Infections/epidemiology , COVID-19 , Coronavirus Infections/epidemiology , Female , Humans , Incidence , Incidental Findings , Infectious Disease Incubation Period , Lung/diagnostic imaging , Male , Middle Aged , Neoplasms/diagnostic imaging , Pandemics , Pneumonia, Viral/epidemiology , SARS-CoV-2
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