Pitfalls in ultrasound: the mistakes you don't see coming
Podcast · Diagnostic Imaging · Maternal-Fetal Ultrasound
Ultrasound Pitfalls: The Errors You Don't See Coming | Medicina Sin Filtro
Episode 1 · Medicina Sin Filtro · Dr. Andrés Camacho with Renato Cuellar
How many times have you trusted what you see in an image without questioning it? In the first episode of Medicina Sin Filtro, Dr. Andrés Camacho — a maternal-fetal medicine specialist with over 20 years of experience — shows us that in ultrasound, what you see is not always what it is.
The conversation shows how technological democratization — going from scarce Doppler equipment two decades ago to its widespread availability today — has opened access to prenatal diagnosis, but has also multiplied the risk of errors due to overconfidence. Dr. Camacho argues that ultrasound is not a technique: it is the management of probabilities, human stories, and medical humility.
Key topics of the episode:
1. Technological evolution and its two sides
The availability of Doppler equipment has transformed maternal-fetal medicine. But Dr. Camacho warns: having the instrument does not mean knowing how to use it. Widespread access to technology can create a false sense of diagnostic competence when not accompanied by solid clinical training.
2. Technical pitfalls vs. cognitive pitfalls
Not all errors are the same. The episode distinguishes two fundamental categories:
- Technical errors: poor cutting planes, incorrect measurements, poor image optimization.
- Cognitive errors: confirmation bias (seeing what we expect to see), obedience bias (validating what another doctor already said), and overconfidence accumulated with experience.
3. Metacognition: thinking about what we think
4. The humanization of diagnosis
Where to find Dr. Andrés Camacho:
• Instagram: /dr.andrescamacho
Episode structure
Introduction. Introduction of Dr. Andrés Camacho and the concept of ultrasound pitfalls.
Maternal-fetal medicine today. Evolution of the specialty and access to technology in Colombia.
The first reality check. Difficult diagnoses (Trisomy 18) and human support.
Epidemiology and probability. The statistics behind every clinical finding.
Cognitive biases in ultrasound. Confirmation, obedience, and overconfidence.
Detection rates. Why specialized centers achieve better diagnoses with the same equipment.
Artificial Intelligence. The future of technology in diagnostic imaging.
Image Optimization (OMG). Technique to improve visualization before measuring.
Doppler and its pitfalls. How to avoid false diagnoses in fetoplacental flows.
Conclusions and checklist. Final recommendations for specialists and residents.
The 4 most valuable takeaways from the episode
① The OMG Rule
Before diagnosing any finding, check the Orientation, Magnification, and Gain. If the image is not optimized, the diagnosis won't be either. This simple step eliminates a significant proportion of technical errors in ultrasound.
② Documenting is diagnosing
It is not enough to observe that an organ looks healthy: you must take the image that confirms it. This act forces the brain to move from automatic thinking (Type 1) to analytical thinking (Type 2), reducing error by omission. If it is not in the photo, it does not exist in the report.
③ Context is the diagnosis
An image without a medical history can lie. The case of a false positive for vanishing fetus in fetal DNA tests illustrates how knowing the patient's background completely changes the interpretation of a result. Never diagnose an image: diagnose a person.
④ The humility of the specialist
Experience should not bring arrogance, but greater caution. Asking for a second opinion is not a lack of knowledge: it is clinical responsibility. The doctors who know the most are, paradoxically, the ones who consult with colleagues the most.
#ultrasoundpitfalls · #maternal-fetalultrasound · #diagnosticimaging · #cognitivebiases · #medicinawithoutfilter · #medicalpodcast · #Dr.AndrésCamacho
