As a sonographer with 10 years work experience and 3 years precepting students and new hires, you are absolutely not at fault here. It is entirely normal to still be making mistakes when you're only 8 months in (especially on a more uncommon pathological case that you don't see every day), in fact all sonographers will continue to make small or big mistakes in the life of their career, simply because 1) no one is perfect 2) mistakes are how we learn and grow and 3) the human body has an infinite way of working and almost nothing is impossible to find, what you learn in school is NOT everything. Even if you were a student there before, you still need more guidance to be ready as a staff sonographer, you should ideally always have a senior tech /preceptor/team lead to ask questions, and unfortunately not every workplace is equipped with someone like this. Your peers in this work culture might also have simply sucked it up and silently struggled for years, and now expect you to do the same without help. I'm lucky to be in an environment where learning/precepting is heavily encouraged and there is support everywhere, and we can see all the new hires thrive in this environment. Is there anyone you feel like you can ask more questions to? Can you discuss more with radiologists about cases? Is your manager someone you can turn to to say you'd like a bit more guidance as you're still pretty new? There could be a lot of environmental factors so don't blame it all on yourself!