Radiology

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Radiology

Resources for imaging and radiology

16  articles in this collection
Written by Camille Blouin, Johann Graham, Anne-Marie Lavigne, Kiana Le Bel, 

Ultrasound Considerations in Early Pregnancy

 Scan should be offered without delay in cases of abdominal/pelvic pain with no previous scan showing live intrauterine pregnancy, heavy bleeding with systemic symptoms or high suspicion of ectopic pregnancy. In cases of moderate bleeding or resolved heavy bleeding, it is suggested to use teleconsultation and ask the patient to take a pregnancy test. If […]

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04/15/2020

Gynecological Ultrasound Management

Indications for immediate assessment : Acute persistent pelvic pain, to rule out ovarian torsion, ruptured ovarian cyst, PID and tubo-ovarian abscess; Suspicion for postoperative complications or hyperstimulation syndrome; Abdominopelvic mass provoking systemic symptoms; AUB causing hemodynamic instability or severe anemia.   Indications to delay scan for 2-4 weeks : Risk for malignancy : family history […]

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04/10/2020

Measures Taken by the Radiology Department

  1) Different types of patients in the radiology department Patients should be separated based on risk of transmission : Suspected COVID-19 patient Confirmed COVID-19 patient Asymptomatic community patient   2) Postponement of elective procedures  Non-urgent procedures such as systematic evaluation of chronic diseases and screening procedures (e.g. mammography) should be postponed.  Management of general […]

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04/20/2020

Role of CT in the Management of COVID-19 Patients

  1) Main radiologic findings Bilateral multilobar ground-glass opacification with a peripheral or posterior distribution is found in COVID-19.  Generally in lower lobes and less frequently the right middle lobe.  Greatest severity of CT scan found around day 10 of symptom onset.    This data was provided by a systematic review of the literature conducted […]

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04/20/2020

The Role of Radiologists in the COVID-19 Pandemic

The role of radiologists in the COVID-19 pandemic consists mainly of :  Early detection of any lung abnormalities signalling potential pneumonia in at risk patients. Evaluation of disease severity and potential complications such as acute respiratory distress syndrome. When radiological signs present, suspicion of bacterial secondary infection. Education of trainees and clinicians on imaging findings […]

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04/17/2020

Chest CT Sensitivity Compared to RT-PCR

Chest CT for patients infected with COVID-19 has a sensitivity of 98%, compared to RT-PCR at 71% ( p<.001). Non-contrast chest CT could be used for screening for COVID-19 for patients with compatible features of COVID-19 infection, especially when RT-PCR is negative.   This information was provided by a retrospective study of 51 patients published […]

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03/30/2020

Chest X-Ray (CXR) Findings in COVID-19 Patients

CXR of patients with COVID-19 pneumonia can present with bilateral lower zone consolidations. This presentation mirrors those described for CT (bilateral, peripheral, consolidations and/or ground glass opacities). Bilateral consolidations on CXR present a peak at 10-12 days from symptoms onsets. Despite radiological signs that, if presents, can suggest COVID-19 pneumonia, CXR has lower sensitivity compared […]

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04/12/2020

Should We Manage Obstetric Ultrasounds Differently?

General considerations : The number of visits needs to be minimal and the patient should come alone. Triage based on risk factors and temperature at arrival should be performed before the patient enters the ultrasound unit. Non-urgent appointments should be postponed for 14 days. Monochorionic twin pregnancy should be managed as usual. Some high-risk pregnancy […]

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04/09/2020

A First Presumptive Case Report of Acute Necrotizing Hemorrhagic Encephalopathy

Acute necrotizing encephalopathy (ANE) is a rare complication of influenza and other viral infections and has been related to intracranial cytokine storms. A female airline worker in her late fifties is the first reported case of acute necrotizing hemorrhagic encephalopathy associated with SARS-CoV-2. Hemorrhagic bithalamic lesions were demonstrated by CT and MRI imagery. However, detection […]

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04/17/2020

Precautions for the Radiology Staff

To decrease the risk of spread of the virus, the use of portable radiographic equipment should be prioritized. Surgical mask should be worn by all patients who need to be taken to the radiology department. Satellite radiography center as well as dedicated radiographic equipment could reduce the risk of transmission as seen with the SARS. […]

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04/20/2020

Radiology Guidelines For COVID-19 Patients

Chest CT and Chest X-Ray (CXR) are not routinely indicated in patients with or suspected with COVID-19 Imaging is indicated in patients with moderate or severe forms of COVID-19, deterioration of respiratory function, high risk of disease progression or complications. Hospitals or clinics should prioritize portable CXRs, when they are considered medically necessary, in order […]

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04/17/2020

Interventional Radiology And COVID-19

Interventional radiology presents a higher risk for infection transmission due to patient proximity. This requires adequate guidelines and protocols.  Interventional radiology departments should prioritize urgent and semi-urgent cases and report any elective procedures until the current pandemic is under control. For interventional radiology procedures, the CDC recommends the use of protective equipment such as protective […]

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04/17/2020

Artificial Intelligence And COVID-19

Despite limited data, deep learning in Chest X-Ray (CXR) of patients with COVID-19 could increase the diagnostic abilities of physicians at point of care.  It could also highlight subtle abnormalities missed by physicians and triage patients for CT. With limited test data, deep learning can accurately detect COVID-19 and differentiate it from community acquired pneumonia […]

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04/17/2020

Pulmonary ultrasound in COVID-19 positive patients

Characteristic findings of lung ultrasound in patients with COVID-19 are thickening and irregularities of the pleural line, “B” lines, small consolidations and “A” lines during recovery phase.  Several studies suggest that lung ultrasound is accurate and non-inferior to chest X-ray and clinical examination when detecting lung pathologies. At this time, there is still limited experience […]

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04/12/2020

Evolution of patients with COVID-19 on chest CT

On chest CT in patients with COVID-19, four stages of evolution can be observed ; early stage (0-4 days), progressive stage (5-8 days), peak stage (10-13 days) and absorption stage (+14 days). The most common chest CT feature is bilateral ground-glass opacity (GGO) alone. Consolidations are the second most predominant feature. Early stage: Presence of […]

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04/12/2020

Review of Imaging Findings

Bilateral multilobar ground-glass opacification with a peripheral or posterior distribution is found in COVID-19. Generally in lower lobes and less frequently the right middle lobe.  Atypical initial imaging can be found mainly in the elderly population Greatest severity of CT scan found around day 10 of symptom onset.  Less common findings that may be seen […]

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03/29/2020