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Pamela Johnson Profile picture
Pamela Johnson
@PamelaJohnsonMD
Radiologist, mom & BFF. Vice President of Care Transformation @HopkinsMedicine & Prof of Radiology, Oncology & Urology. Tweets mine.
Oct 27, 2022 • 5 tweets • 3 min read
Chest CTA protocol selection #tweetorial for medical providers. Many clinicians don't know that pulmonary CTA is not adequate for aortic imaging & vice versa. Technologists time the studies very carefully to optimize enhancement of the appropriate vascular region. @CardiacRad 2/Ideally, an order requests evaluation for 1 pathology - either pulmonary embolism OR acute aortic syndrome. Because the alternative vascular bed has no contrast in it on a well-timed, high quality study.
Oct 27, 2022 • 7 tweets • 4 min read
#tweetorial on chest CT protocol selection.
Topic: when to order CT with & without IV contrast.
Read on to learn more. (Chest CTA is different - 2nd #tweetorial to follow). @Hopkins_Rad @RadiologyACR @CardiacRad @LindaChuMD @JavadAzadi @ctisus 1/How do we perform a CT with and without contrast?
Nov 1, 2019 • 17 tweets • 8 min read
📢🆕Call Prep Tweetorial for Radiology Residents📢
Add these ABCs to your search pattern for every emergency body CT you read on call:
☑️A: air (use lung window)
☑️B: bleeding
☑️C: clot (or other acute vascular pathology)
Read on!

PS. Welcome pearls from other radiologists. Image 2/ A is for Air.
☑️Look for pneumoperitoneum & pneumatosis in every abdomen with lung window
☑️Venous gas in ischemic bowel may only be in SMV, small SMV branches or small focus in periphery of liver
☑️Closed loop SBO may only dilate short segment of bowel Image
Oct 10, 2018 • 5 tweets • 2 min read
More high value radiology! Topic: PO contrast for abdominal & pelvic CT in adult patients. Invite comments on the debate about positive PO contrast, PO water and no PO at the end, but arm tweets with evidence! #tweetorial #highvaluehealthcare 1/
 Quick poll to gauge your understanding. Which of the following is used for oral contrast with adult CT abdomen & pelvis (CT AP)?
Oct 7, 2018 • 8 tweets • 4 min read
Doctors, APPs, residents & fellows: Do you know which abdomen CT protocol to choose when ordering? If not, read this quick #tweetorial to ensure that your orders optimize patient care quality, safety & value. @mmahesh1 @RadiologyACR @guptaarjun90 @m_e_nielsen @aapmHQ @ImageWisely 1/
 Quick question to gauge your understanding.
What is abdominal CT with & without IV contrast?